LM555/NE555/SA555. Single Timer. Description. Features. Applications. Internal Block Diagram. Vcc GND. Trigger. Discharge. Output F/F.
|
|
- Florence Shavonne Flynn
- 7 years ago
- Views:
Transcription
1 Single Timer Features High Current Drive Capability (00mA) Adjustable Duty Cycle Temperature Stability of 0.005%/ C Timing From µsec to Hours Turn off Time Less Than µsec Applications Precision Timing Pulse Generation Time Delay Generation Sequential Timing Description The LM555/NE555/SA555 is a highly stable controller capable of producing accurate timing pulses. With a monostable operation, the time delay is controlled by one external resistor and one capacitor. With an astable operation, the frequency and duty cycle are accurately controlled by two external resistors and one capacitor. 8-DIP 8-SOP Internal Block Diagram GND R R R 8 Vcc Trigger Comp. Discharging Tr. 7 Discharge Output OutPut Stage F/F Comp. 6 Threshold Reset 4 Vref 5 Control Voltage Rev Fairchild Semiconductor Corporation
2 Absolute Maximum Ratings (TA = 5 C) Parameter Symbol Value Unit Supply Voltage VCC 6 V Lead Temperature (Soldering 0sec) TLEAD 00 C Power Dissipation PD 600 mw Operating Temperature Range LM555/NE555 SA555 TOPR 0 ~ ~ +85 Storage Temperature Range TSTG -65 ~ +50 C C
3 Electrical Characteristics (TA = 5 C, VCC = 5 ~ 5V, unless otherwise specified) Parameter Symbol Conditions Min. Typ. Max. Unit Supply Voltage VCC V Supply Current (Low Stable) (Note) ICC VCC = 5V, RL = - 6 ma VCC = 5V, RL = ma Timing Error (Monostable) Initial Accuracy (Note) Drift with Temperature (Note4) Drift with Supply Voltage (Note4) ACCUR t/ T t/ VCC RA = kω to00kω C = 0.µF % ppm/ C %/V Timing Error (Astable) Intial Accuracy (Note) Drift with Temperature (Note4) Drift with Supply Voltage (Note4) ACCUR t/ T t/ VCC RA = kω to 00kΩ C = 0.µF Notes:. When the output is high, the supply current is typically ma less than at VCC = 5V.. Tested at VCC = 5.0V and VCC = 5V.. This will determine the maximum value of RA + RB for 5V operation, the max. total R = 0MΩ, and for 5V operation, the max. total R = 6.7MΩ. 4. These parameters, although guaranteed, are not 00% tested in production % ppm/ C %/V Control Voltage VC VCC = 5V V VCC = 5V V Threshold Voltage VTH VCC = 5V V VCC = 5V -. - V Threshold Current (Note) ITH µa Trigger Voltage VTR VCC = 5V..67. V VCC = 5V V Trigger Current ITR VTR = 0V µa Reset Voltage VRST V Reset Current IRST ma Low Output Voltage High Output Voltage VOL VOH VCC = 5V ISINK = 0mA ISINK = 50mA VCC = 5V ISINK = 5mA VCC = 5V ISOURCE = 00mA ISOURCE = 00mA.75 VCC = 5V ISOURCE = 00mA V V V.5. - V V V Rise Time of Output (Note4) tr ns Fall Time of Output (Note4) tf ns Discharge Leakage Current ILKG na
4 Application Information Table below is the basic operating table of 555 timer: Threshold Voltage Trigger Voltage Discharging Tr. Reset(PIN 4) Output(PIN ) (Vth th)(pin 6) (Vtr tr)(pin ) (PIN 7) Don't care Don't care Low Low ON Vth > Vcc / Vth > Vcc / High Low ON Vcc / < Vth < Vcc / Vcc / < Vth < Vcc / High - - Vth < Vcc / Vth < Vcc / High High OFF When the low signal input is applied to the reset terminal, the timer output remains low regardless of the threshold voltage or the trigger voltage. Only when the high signal is applied to the reset terminal, the timer's output changes according to threshold voltage and trigger voltage. When the threshold voltage exceeds / of the supply voltage while the timer output is high, the timer's internal discharge Tr. turns on, lowering the threshold voltage to below / of the supply voltage. During this time, the timer output is maintained low. Later, if a low signal is applied to the trigger voltage so that it becomes / of the supply voltage, the timer's internal discharge Tr. turns off, increasing the threshold voltage and driving the timer output again at high.. Monostable Operation Table. Basic Operating Table +Vcc Trigger RL 4 RESET TRIG OUT GND 8 Vcc DISCH THRES CONT C RA C Capacitance(uF) R =kω=k=k=k A 0kΩ0k0k 00kΩ00k00k MΩMMM MΩ0M0M 0 Time Delay(s) Figure. Monoatable Circuit Figure. Resistance and Capacitance vs. Time delay(td) Figure. Waveforms of Monostable Operation 4
5 Figure illustrates a monostable circuit. In this mode, the timer generates a fixed pulse whenever the trigger voltage falls below Vcc/. When the trigger pulse voltage applied to the # pin falls below Vcc/ while the timer output is low, the timer's internal flip-flop turns the discharging Tr. off and causes the timer output to become high by charging the external capacitor C and setting the flip-flop output at the same time. The voltage across the external capacitor C, VC increases exponentially with the time constant t=ra*c and reaches Vcc/ at td=.ra*c. Hence, capacitor C is charged through resistor RA. The greater the time constant RAC, the longer it takes for the VC to reach Vcc/. In other words, the time constant RAC controls the output pulse width. When the applied voltage to the capacitor C reaches Vcc/, the comparator on the trigger terminal resets the flip-flop, turning the discharging Tr. on. At this time, C begins to discharge and the timer output converts to low. In this way, the timer operating in the monostable repeats the above process. Figure shows the time constant relationship based on RA and C. Figure shows the general waveforms during the monostable operation. It must be noted that, for a normal operation, the trigger pulse voltage needs to maintain a minimum of Vcc/ before the timer output turns low. That is, although the output remains unaffected even if a different trigger pulse is applied while the output is high, it may be affected and the waveform does not operate properly if the trigger pulse voltage at the end of the output pulse remains at below Vcc/. Figure 4 shows such a timer output abnormality. Figure 4. Waveforms of Monostable Operation (abnormal). Astable Operation +Vcc 00 4 RESET TRIG 8 Vcc DISCH THRES 7 6 RA RB Capacitance(uF) 0 0. M MΩ M M 0M 0MΩ 0M 0M 0k 0kΩ 0k 0k 00k 00kΩ 00k 00k k kω k k (R +R ) A B RL OUT GND CONT 5 C C 0.0 E- 00m 0 00 k Frequency(Hz) 0k 00k Figure 5. Astable Circuit Figure 6. Capacitance and Resistance vs. Frequency 5
6 Figure 7. Waveforms of Astable Operation An astable timer operation is achieved by adding resistor RB to Figure and configuring as shown on Figure 5. In the astable operation, the trigger terminal and the threshold terminal are connected so that a self-trigger is formed, operating as a multi vibrator. When the timer output is high, its internal discharging Tr. turns off and the VC increases by exponential function with the time constant (RA+RB)*C. When the VC, or the threshold voltage, reaches Vcc/, the comparator output on the trigger terminal becomes high, resetting the F/F and causing the timer output to become low. This in turn turns on the discharging Tr. and the C discharges through the discharging channel formed by RB and the discharging Tr. When the VC falls below Vcc/, the comparator output on the trigger terminal becomes high and the timer output becomes high again. The discharging Tr. turns off and the VC rises again. In the above process, the section where the timer output is high is the time it takes for the VC to rise from Vcc/ to Vcc/, and the section where the timer output is low is the time it takes for the VC to drop from Vcc/ to Vcc/. When timer output is high, the equivalent circuit for charging capacitor C is as follows: R A R B Vcc C Vc(0-)=Vcc/ dv c V cc V0- ( ) C = ( ) dt R A + R B V ( 0+ ) = V ( ) C CC t V C () t V CC ( R --e A + R B )C = ( ) Since the duration of the timer output high state(th) is the amount of time it takes for the VC(t) to reach Vcc/, 6
7 V () t C t H - --V = V CC CC --e ( R A + R B )C = ( 4) t = C ( R + R )In = 0.69( R + R )C ( 5) H A B A B The equivalent circuit for discharging capacitor C, when timer output is low is, as follows: R B C V C (0-)=Vcc/ R D dv C C dt V C () t V R + R C = 0 ( 6) A B t ( R A + R D )C = --V CC e ( 7) Since the duration of the timer output low state(tl) is the amount of time it takes for the VC(t) to reach Vcc/, t L ( R A + R D )C --V CC = --V CC e ( 8) t = C ( R + R )In = 0.69( R + R )C ( 9) L B D B D Since RD is normally RB>>RD although related to the size of discharging Tr., tl=0.69rbc (0) Consequently, if the timer operates in astable, the period is the same with 'T=tH+tL=0.69(RA+RB)C+0.69RBC=0.69(RA+RB)C' because the period is the sum of the charge time and discharge time. And since frequency is the reciprocal of the period, the following applies. frequency, f.44 = -- = ( ) T ( R + R )C A B. Frequency divider By adjusting the length of the timing cycle, the basic circuit of Figure can be made to operate as a frequency divider. Figure 8. illustrates a divide-by-three circuit that makes use of the fact that retriggering cannot occur during the timing cycle. 7
8 Figure 8. Waveforms of Frequency Divider Operation 4. Pulse Width Modulation The timer output waveform may be changed by modulating the control voltage applied to the timer's pin 5 and changing the reference of the timer's internal comparators. Figure 9 illustrates the pulse width modulation circuit. When the continuous trigger pulse train is applied in the monostable mode, the timer output width is modulated according to the signal applied to the control terminal. Sine wave as well as other waveforms may be applied as a signal to the control terminal. Figure 0 shows the example of pulse width modulation waveform. +Vcc 4 8 R A Trigger RESET TRIG Vcc 7 DISCH 6 Output OUT GND THRES Input CONT 5 C Figure 9. Circuit for Pulse Width Modulation Figure 0. Waveforms of Pulse Width Modulation 5. Pulse Position Modulation If the modulating signal is applied to the control terminal while the timer is connected for the astable operation as in Figure, the timer becomes a pulse position modulator. In the pulse position modulator, the reference of the timer's internal comparators is modulated which in turn modulates the timer output according to the modulation signal applied to the control terminal. Figure illustrates a sine wave for modulation signal and the resulting output pulse position modulation : however, any wave shape could be used. 8
9 +Vcc 4 RESET TRIG 8 Vcc 7 DISCH R A R B 6 Output OUT GND THRES Modulation CONT 5 C Figure. Circuit for Pulse Position Modulation Figure. Waveforms of pulse position modulation 6. Linear Ramp When the pull-up resistor RA in the monostable circuit shown in Figure is replaced with constant current source, the VC increases linearly, generating a linear ramp. Figure shows the linear ramp generating circuit and Figure 4 illustrates the generated linear ramp waveforms. +Vcc 4 RESET TRIG 8 Vcc DISCH 7 RE Q R Output OUT GND THRES CONT 6 5 C C R Figure. Circuit for Linear Ramp Figure 4. Waveforms of Linear Ramp In Figure, current source is created by PNP transistor Q and resistor R, R, and RE. I C = V V CC E R E ( ) Here, V E is R V = V V E BE R + R CC ( ) For example, if Vcc=5V, RE=0kΩ, R=5kW, R=0kΩ, and VBE=0.7V, VE=0.7V+0V=0.7V Ic=(5-0.7)/0k=0.5mA 9
10 When the trigger starts in a timer configured as shown in Figure, the current flowing through capacitor C becomes a constant current generated by PNP transistor and resistors. Hence, the VC is a linear ramp function as shown in Figure 4. The gradient S of the linear ramp function is defined as follows: V p p S = ( 4) T Here the Vp-p is the peak-to-peak voltage. If the electric charge amount accumulated in the capacitor is divided by the capacitance, the VC comes out as follows: V=Q/C (5) The above equation divided on both sides by T gives us V --- T Q T = ( 6) C and may be simplified into the following equation. S=I/C (7) In other words, the gradient of the linear ramp function appearing across the capacitor can be obtained by using the constant current flowing through the capacitor. If the constant current flow through the capacitor is 0.5mA and the capacitance is 0.0µF, the gradient of the ramp function at both ends of the capacitor is S = 0.5m/0.0µ = 9.77V/ms. 0
11 Mechanical Dimensions Package Dimensions in millimeters 8-DIP # 6.40 ± ±0.008 # ( ) ± ± ±0.0 #4 # ± MAX.54 ± ± MAX.40 ± ± MIN.0 ± ±0.0 0~
12 Mechanical Dimensions (Continued) Package Dimensions in millimeters 8-SOP.55 ± ±0.008 MIN 0.~ ~ MAX 4.9 ± ± ( ) 0.0 # #8 #4 #5 0.4 ± ± ± ± ± ± MAX MAX0.0 MAX ~ ± ±0.008
13 Ordering Information Product Number Package LM555CN 8-DIP LM555CM 8-SOP Product Number Package NE555N 8-DIP NE555D 8-SOP Product Number Package SA555 8-DIP SA555D 8-SOP Operating Temperature 0 ~ +70 C Operating Temperature 0 ~ +70 C Operating Temperature -40 ~ +85 C
14 DISCLAIMER FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN; NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS. LIFE SUPPORT POLICY FAIRCHILD S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMICONDUCTOR CORPORATION. As used herein:. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and (c) whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury of the user. A critical component in any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. /9/0 0.0m 00 Stock#DSxxxxxxxx 00 Fairchild Semiconductor Corporation
Features. Applications
LM555 Timer General Description The LM555 is a highly stable device for generating accurate time delays or oscillation. Additional terminals are provided for triggering or resetting if desired. In the
More informationUC3842/UC3843/UC3844/UC3845
SMPS Controller www.fairchildsemi.com Features Low Start up Current Maximum Duty Clamp UVLO With Hysteresis Operating Frequency up to 500KHz Description The UC3842/UC3843/UC3844/UC3845 are fixed frequencycurrent-mode
More informationINTEGRATED CIRCUITS. NE558 Quad timer. Product data Supersedes data of 2001 Aug 03. 2003 Feb 14
INTEGRATED CIRCUITS Supersedes data of 2001 Aug 03 2003 Feb 14 DESCRIPTION The Quad Timers are monolithic timing devices which can be used to produce four independent timing functions. The output sinks
More informationHow to Read a Datasheet
How to Read a Datasheet Prepared for the WIMS outreach program 5/6/02, D. Grover In order to use a PIC microcontroller, a flip-flop, a photodetector, or practically any electronic device, you need to consult
More informationLM741. Single Operational Amplifier. Features. Description. Internal Block Diagram. www.fairchildsemi.com
Single Operational Amplifier www.fairchildsemi.com Features Short circuit protection Excellent temperature stability Internal frequency compensation High Input voltage range Null of offset Description
More informationNE555 SA555 - SE555. General-purpose single bipolar timers. Features. Description
NE555 SA555 - SE555 General-purpose single bipolar timers Features Low turn-off time Maximum operating frequency greater than 500 khz Timing from microseconds to hours Operates in both astable and monostable
More informationKA7500C. SMPS Controller. Features. Description. Internal Block Diagram. www.fairchildsemi.com
SMPS Controller www.fairchildsemi.com Features Internal Regulator Provides a Stable 5V Reference Supply Trimmed to ±1% Accuracy. Uncommitted Output TR for 200mA Sink or Source Current Output Control for
More informationNE555 SA555 - SE555. General-purpose single bipolar timers. Features. Description
NE555 SA555 - SE555 General-purpose single bipolar timers Features Low turn-off time Maximum operating frequency greater than 500 khz Timing from microseconds to hours Operates in both astable and monostable
More informationTS555. Low-power single CMOS timer. Description. Features. The TS555 is a single CMOS timer with very low consumption:
Low-power single CMOS timer Description Datasheet - production data The TS555 is a single CMOS timer with very low consumption: Features SO8 (plastic micropackage) Pin connections (top view) (I cc(typ)
More informationMM74HC4538 Dual Retriggerable Monostable Multivibrator
MM74HC4538 Dual Retriggerable Monostable Multivibrator General Description The MM74HC4538 high speed monostable multivibrator (one shots) is implemented in advanced silicon-gate CMOS technology. They feature
More informationLM556 LM556 Dual Timer
LM556 LM556 Dual Timer Literature Number: SNAS549 LM556 Dual Timer General Description The LM556 Dual timing circuit is a highly stable controller capable of producing accurate time delays or oscillation.
More informationCD4013BC Dual D-Type Flip-Flop
CD4013BC Dual D-Type Flip-Flop General Description The CD4013B dual D-type flip-flop is a monolithic complementary MOS (CMOS) integrated circuit constructed with N- and P-channel enhancement mode transistors.
More informationMM74HC174 Hex D-Type Flip-Flops with Clear
Hex D-Type Flip-Flops with Clear General Description The MM74HC174 edge triggered flip-flops utilize advanced silicon-gate CMOS technology to implement D-type flipflops. They possess high noise immunity,
More informationDM74121 One-Shot with Clear and Complementary Outputs
June 1989 Revised July 2001 DM74121 One-Shot with Clear and Complementary Outputs General Description The DM74121 is a monostable multivibrator featuring both positive and negative edge triggering with
More informationHIGH SPEED-10 MBit/s LOGIC GATE OPTOCOUPLERS
DESCRIPTION The, /6 single-channel and /6 dual-channel optocouplers consist of a 5 nm AlGaAS LED, optically coupled to a very high speed integrated photodetector logic gate with a strobable output. This
More informationFAN8082 (KA3082N) Bi-directional DC Motor Driver. Features. Description. Typical Applications. Ordering Information. www.fairchildsemi.
Bi-directional DC Motor Driver www.fairchildsemi.com Features Built-in brake function for stable brake characteristics. Built-in element to absorb a surge current derived from changing motor direction
More informationMM74HCT373 MM74HCT374 3-STATE Octal D-Type Latch 3-STATE Octal D-Type Flip-Flop
3-STATE Octal D-Type Latch 3-STATE Octal D-Type Flip-Flop General Description The MM74HCT373 octal D-type latches and MM74HCT374 Octal D-type flip flops advanced silicongate CMOS technology, which provides
More informationDM74LS112A Dual Negative-Edge-Triggered Master-Slave J-K Flip-Flop with Preset, Clear, and Complementary Outputs
August 1986 Revised March 2000 DM74LS112A Dual Negative-Edge-Triggered Master-Slave J-K Flip-Flop with Preset, Clear, and Complementary General Description This device contains two independent negative-edge-triggered
More informationcss Custom Silicon Solutions, Inc.
css Custom Silicon Solutions, Inc. GENERAL PART DESCRIPTION The is a micropower version of the popular timer IC. It features an operating current under µa and a minimum supply voltage of., making it ideal
More informationCD4001BC/CD4011BC Quad 2-Input NOR Buffered B Series Gate Quad 2-Input NAND Buffered B Series Gate
CD4001BC/CD4011BC Quad 2-Input NOR Buffered B Series Gate Quad 2-Input NAND Buffered B Series Gate General Description The CD4001BC and CD4011BC quad gates are monolithic complementary MOS (CMOS) integrated
More informationMM74C150 MM82C19 16-Line to 1-Line Multiplexer 3-STATE 16-Line to 1-Line Multiplexer
MM74C150 MM82C19 16-Line to 1-Line Multiplexer 3-STATE 16-Line to 1-Line Multiplexer General Description The MM74C150 and MM82C19 multiplex 16 digital lines to 1 output. A 4-bit address code determines
More informationLM566C Voltage Controlled Oscillator
LM566C Voltage Controlled Oscillator General Description The LM566CN is a general purpose voltage controlled oscillator which may be used to generate square and triangular waves the frequency of which
More informationMC33064DM 5 UNDERVOLTAGE SENSING CIRCUIT
Order this document by MC3464/D The MC3464 is an undervoltage sensing circuit specifically designed for use as a reset controller in microprocessor-based systems. It offers the designer an economical solution
More informationMM74HC273 Octal D-Type Flip-Flops with Clear
MM74HC273 Octal D-Type Flip-Flops with Clear General Description The MM74HC273 edge triggered flip-flops utilize advanced silicon-gate CMOS technology to implement D-type flipflops. They possess high noise
More informationMM74HC14 Hex Inverting Schmitt Trigger
MM74HC14 Hex Inverting Schmitt Trigger General Description The MM74HC14 utilizes advanced silicon-gate CMOS technology to achieve the low power dissipation and high noise immunity of standard CMOS, as
More informationDM74LS05 Hex Inverters with Open-Collector Outputs
Hex Inverters with Open-Collector Outputs General Description This device contains six independent gates each of which performs the logic INVERT function. The open-collector outputs require external pull-up
More informationMC78XX/LM78XX. 3-terminal 1A positive voltage regulator. Features. Description. Internal Block Digram. www.fairchildsemi.com
www.fairchildsemi.com 3-terminal 1A positive voltage regulator Features Current up to 1A Voltages of 5, 6, 8, 9, 10, 11, 12, 15, 18, 24V Thermal Overload Protection Short Circuit Protection Transistor
More informationCD4027BC Dual J-K Master/Slave Flip-Flop with Set and Reset
October 1987 Revised March 2002 CD4027BC Dual J-K Master/Slave Flip-Flop with Set and Reset General Description The CD4027BC dual J-K flip-flops are monolithic complementary MOS (CMOS) integrated circuits
More informationDM74LS191 Synchronous 4-Bit Up/Down Counter with Mode Control
August 1986 Revised February 1999 DM74LS191 Synchronous 4-Bit Up/Down Counter with Mode Control General Description The DM74LS191 circuit is a synchronous, reversible, up/ down counter. Synchronous operation
More informationA Lesson on Digital Clocks, One Shots and Counters
A Lesson on Digital Clocks, One Shots and Counters Topics Clocks & Oscillators LM 555 Timer IC Crystal Oscillators Selection of Variable Resistors Schmitt Gates Power-On Reset Circuits One Shots Counters
More informationDM74LS169A Synchronous 4-Bit Up/Down Binary Counter
Synchronous 4-Bit Up/Down Binary Counter General Description This synchronous presettable counter features an internal carry look-ahead for cascading in high-speed counting applications. Synchronous operation
More informationNTE2053 Integrated Circuit 8 Bit MPU Compatible A/D Converter
NTE2053 Integrated Circuit 8 Bit MPU Compatible A/D Converter Description: The NTE2053 is a CMOS 8 bit successive approximation Analog to Digital converter in a 20 Lead DIP type package which uses a differential
More information0.9V Boost Driver PR4403 for White LEDs in Solar Lamps
0.9 Boost Driver for White LEDs in Solar Lamps The is a single cell step-up converter for white LEDs operating from a single rechargeable cell of 1.2 supply voltage down to less than 0.9. An adjustable
More informationDM7474 Dual Positive-Edge-Triggered D-Type Flip-Flops with Preset, Clear and Complementary Outputs
DM7474 Dual Positive-Edge-Triggered D-Type Flip-Flops with Preset, Clear and Complementary Outputs General Description This device contains two independent positive-edge-triggered D-type flip-flops with
More informationFAN7680. PC Power Supply Outputs Monitoring IC. Features. Description. Typical Application. www.fairchildsemi.com FPO OVP UVP PGO PSON
PC Power Supply Outputs Monitoring IC www.fairchildsemi.com Features PC Power Supply Output Monitor Circuitry Few External Components Over Voltage Protection for.v, V and V(Vcc) Outputs Under Voltage Protection
More informationA Lesson on Digital Clocks, One Shots and Counters
A Lesson on Digital Clocks, One Shots and Counters Topics Clocks & Oscillators LM 555 Timer IC Crystal Oscillators Selection of Variable Resistors Schmitt Gates Power-On Reset Circuits One Shots Counters
More informationDM74LS193 Synchronous 4-Bit Binary Counter with Dual Clock
September 1986 Revised March 2000 DM74LS193 Synchronous 4-Bit Binary Counter with Dual Clock General Description The DM74LS193 circuit is a synchronous up/down 4-bit binary counter. Synchronous operation
More informationPOWER-VOLTAGE MONITORING IC WITH WATCHDOG TIMER
FUJITSU SEMICONDUCTOR DATA SHEET DS04-27402-2E ASSP POWER-VOLTAGE MONITORING IC WITH WATCHDOG TIMER MB3793-42/30 DESCRIPTION The MB3793 is an integrated circuit to monitor power voltage; it incorporates
More information1. Learn about the 555 timer integrated circuit and applications 2. Apply the 555 timer to build an infrared (IR) transmitter and receiver
Electronics Exercise 2: The 555 Timer and its Applications Mechatronics Instructional Laboratory Woodruff School of Mechanical Engineering Georgia Institute of Technology Lab Director: I. Charles Ume,
More informationPHOTOTRANSISTOR OPTOCOUPLERS
MCT2 MCT2E MCT20 MCT27 WHITE PACKAGE (-M SUFFIX) BLACK PACKAGE (NO -M SUFFIX) DESCRIPTION The MCT2XXX series optoisolators consist of a gallium arsenide infrared emitting diode driving a silicon phototransistor
More informationAAT3520/2/4 MicroPower Microprocessor Reset Circuit
General Description Features PowerManager The AAT3520 series of PowerManager products is part of AnalogicTech's Total Power Management IC (TPMIC ) product family. These microprocessor reset circuits are
More informationAP331A XX G - 7. Lead Free G : Green. Packaging (Note 2)
Features General Description Wide supply Voltage range: 2.0V to 36V Single or dual supplies: ±1.0V to ±18V Very low supply current drain (0.4mA) independent of supply voltage Low input biasing current:
More informationDM74LS00 Quad 2-Input NAND Gate
DM74LS00 Quad 2-Input NAND Gate General Description This device contains four independent gates each of which performs the logic NAND function. Ordering Code: August 1986 Revised March 2000 Order Number
More informationCD40174BC CD40175BC Hex D-Type Flip-Flop Quad D-Type Flip-Flop
Hex D-Type Flip-Flop Quad D-Type Flip-Flop General Description The CD40174BC consists of six positive-edge triggered D- type flip-flops; the true outputs from each flip-flop are externally available. The
More informationCD4027BMS. CMOS Dual J-K Master-Slave Flip-Flop. Pinout. Features. Functional Diagram. Applications. Description. December 1992
CD7BMS December 199 CMOS Dual J-K Master-Slave Flip-Flop Features Pinout High Voltage Type (V Rating) Set - Reset Capability CD7BMS TOP VIEW Static Flip-Flop Operation - Retains State Indefinitely with
More informationSTM6315. Open drain microprocessor reset. Features
Open drain microprocessor reset Features Low supply current of 1.5µA (typ) ±1.8% reset threshold accuracy (25 C) Guaranteed RST assertion down to V CC = 1.0V Open drain RST output can exceed V CC Power
More informationControllo di potenza in continua con transistor in commutazione pilotato da un segnale PWM
Esercitazione di Laboratorio Carlo Calò Classe Materia Argomento 5ª Elettronici T.D.P. Controllo di Potenza Controllo di potenza in continua con transistor in commutazione pilotato da un segnale PWM Vogliamo
More informationCD4043BC CD4044BC Quad 3-STATE NOR R/S Latches Quad 3-STATE NAND R/S Latches
CD4043BC CD4044BC Quad 3-STATE NOR R/S Latches Quad 3-STATE NAND R/S Latches General Description The CD4043BC are quad cross-couple 3-STATE CMOS NOR latches, and the CD4044BC are quad cross-couple 3- STATE
More informationCold-Junction-Compensated K-Thermocoupleto-Digital Converter (0 C to +1024 C)
19-2235; Rev 1; 3/02 Cold-Junction-Compensated K-Thermocoupleto-Digital General Description The performs cold-junction compensation and digitizes the signal from a type-k thermocouple. The data is output
More informationMM74C150 MM82C19 16-Line to 1-Line Multiplexer 3-STATE 16-Line to 1-Line Multiplexer
MM74C150 MM82C19 16-Line to 1-Line Multiplexer 3-STATE 16-Line to 1-Line Multiplexer General Description The MM74C150 and MM82C19 multiplex 16 digital lines to 1 output. A 4-bit address code determines
More information74AC139 74ACT139 Dual 1-of-4 Decoder/Demultiplexer
Dual 1-of-4 Decoder/Demultiplexer General Description The AC/ACT139 is a high-speed, dual 1-of-4 decoder/ demultiplexer. The device has two independent decoders, each accepting two inputs and providing
More informationMM74C74 Dual D-Type Flip-Flop
Dual D-Type Flip-Flop General Description The MM74C74 dual D-type flip-flop is a monolithic complementary MOS (CMOS) integrated circuit cotructed with N- and P-channel enhancement traistors. Each flip-flop
More informationMC78XX/LM78XX/MC78XXA
3-Terminal 1A Positive oltage Regulator www.fairchildsemi.com Features Output Current up to 1A Output oltages of 5, 6, 8, 9, 10, 12, 15, 18, 24 Thermal Overload Protection Short Circuit Protection Output
More informationQuad 2-input NAND Schmitt trigger
Rev. 9 15 December 2015 Product data sheet 1. General description 2. Features and benefits 3. Applications The is a quad two-input NAND gate. Each input has a Schmitt trigger circuit. The gate switches
More informationMB3771 ASSP POWER SUPPLY MONITOR DS04-27400-5E POWER SUPPLY MONITOR FUJITSU SEMICONDUCTOR DATA SHEET
FUJITSU SEMICONDUOR DATA SHEET DS0-00-E ASSP POWER SUPPLY MONITOR MB POWER SUPPLY MONITOR The Fujitsu MB is designed to monitor the voltage level of one or two power supplies (+V and an arbitrary voltage)
More informationCD4013BC Dual D-Type Flip-Flop
Dual D-Type Flip-Flop General Description The CD4013B dual D-type flip-flop is a monolithic complementary MOS (CMOS) integrated circuit cotructed with N- and P-channel enhancement mode traistors. Each
More informationConstant Voltage and Constant Current Controller for Adaptors and Battery Chargers
TECHNICAL DATA Constant Voltage and Constant Current Controller for Adaptors and Battery Chargers IK3051 Description IK3051 is a highly integrated solution for SMPS applications requiring constant voltage
More informationCD4001BC/CD4011BC Quad 2-Input NOR Buffered B Series Gate Quad 2-Input NAND Buffered B Series Gate
Quad 2-Input NOR Buffered B Series Gate Quad 2-Input NAND Buffered B Series Gate General Description The CD4001BC and CD4011BC quad gates are monolithic complementary MOS (CMOS) integrated circuits cotructed
More information74AC191 Up/Down Counter with Preset and Ripple Clock
74AC191 Up/Down Counter with Preset and Ripple Clock General Description The AC191 is a reversible modulo 16 binary counter. It features synchronous counting and asynchronous presetting. The preset feature
More informationFEATURES DESCRIPTION APPLICATIONS BLOCK DIAGRAM. PT2248 Infrared Remote Control Transmitter
Infrared Remote Control Transmitter DESCRIPTION PT2248 is an infrared remote control transmitter utilizing CMOS Technology. It is capable of 18 functions and a total of 75 commands. Single-shot and continuous
More informationPIN CONFIGURATION FEATURES ORDERING INFORMATION ABSOLUTE MAXIMUM RATINGS. D, F, N Packages
DESCRIPTION The µa71 is a high performance operational amplifier with high open-loop gain, internal compensation, high common mode range and exceptional temperature stability. The µa71 is short-circuit-protected
More informationCE8301 Series. Introduction. Features. Ordering Information. Applications SMALL PACKAGE PFM CONTROL STEP-UP DC/DC CONVERTER
SMALL PACKAGE PFM CONTROL STEP-UP DC/DC CONVERTER Introduction The is a CMOS PFM-control step-up switching DC/DC converter that mainly consists of a reference voltage source, an oscillator, and a comparator.
More informationEST7502B PC Power Supply PWM with Supervisor
GENERAL DESCRIPTION The EST7502B is a pulse width modulation (PWM) control circuit with complete protection circuits for used in the SMPS (Switched Mode Power Supply). It contains various functions, which
More informationOp Amp Circuit Collection
Op Amp Circuit Collection Note: National Semiconductor recommends replacing 2N2920 and 2N3728 matched pairs with LM394 in all application circuits. Section 1 Basic Circuits Inverting Amplifier Difference
More information1-800-831-4242
Distributed by: www.jameco.com 1-800-831-4242 The content and copyrights of the attached material are the property of its owner. DM74LS161A DM74LS163A Synchronous 4-Bit Binary Counters General Description
More informationHigh-Speed, 5 V, 0.1 F CMOS RS-232 Driver/Receivers ADM202/ADM203
a FEATURES kb Transmission Rate ADM: Small (. F) Charge Pump Capacitors ADM3: No External Capacitors Required Single V Power Supply Meets EIA-3-E and V. Specifications Two Drivers and Two Receivers On-Board
More informationLM2704 Micropower Step-up DC/DC Converter with 550mA Peak Current Limit
Micropower Step-up DC/DC Converter with 550mA Peak Current Limit General Description The LM2704 is a micropower step-up DC/DC in a small 5-lead SOT-23 package. A current limited, fixed off-time control
More informationDM74LS47 BCD to 7-Segment Decoder/Driver with Open-Collector Outputs
DM74LS47 BCD to 7-Segment Decoder/Driver with Open-Collector Outputs General Description The DM74LS47 accepts four lines of BCD (8421) input data, generates their complements internally and decodes the
More information74F74 Dual D-Type Positive Edge-Triggered Flip-Flop
Dual D-Type Positive Edge-Triggered Flip-Flop General Description The F74 is a dual D-type flip-flop with Direct Clear and Set inputs and complementary (Q, Q) outputs. Information at the input is traferred
More informationCD4093BM CD4093BC Quad 2-Input NAND Schmitt Trigger
CD4093BM CD4093BC Quad 2-Input NAND Schmitt Trigger General Description The CD4093B consists of four Schmitt-trigger circuits Each circuit functions as a 2-input NAND gate with Schmitt-trigger action on
More informationSG2525A SG3525A REGULATING PULSE WIDTH MODULATORS
SG2525A SG3525A REGULATING PULSE WIDTH MODULATORS 8 TO 35 V OPERATION 5.1 V REFERENCE TRIMMED TO ± 1 % 100 Hz TO 500 KHz OSCILLATOR RANGE SEPARATE OSCILLATOR SYNC TERMINAL ADJUSTABLE DEADTIME CONTROL INTERNAL
More informationICS650-44 SPREAD SPECTRUM CLOCK SYNTHESIZER. Description. Features. Block Diagram DATASHEET
DATASHEET ICS650-44 Description The ICS650-44 is a spread spectrum clock synthesizer intended for video projector and digital TV applications. It generates three copies of an EMI optimized 50 MHz clock
More informationDM74LS373/DM74LS374 3-STATE Octal D-Type Transparent Latches and Edge-Triggered Flip-Flops
DM74LS373/DM74LS374 3-STATE Octal D-Type Transparent Latches and Edge-Triggered Flip-Flops General Description These 8-bit registers feature totem-pole 3-STATE outputs designed specifically for driving
More informationLC898300XA. Functions Automatic adjustment to the individual resonance frequency Automatic brake function Initial drive frequency adjustment function
Ordering number : A2053 CMOS LSI Linear Vibrator Driver IC http://onsemi.com Overview is a Linear Vibrator Driver IC for a haptics and a vibrator installed in mobile equipments. The best feature is it
More informationMM54C150 MM74C150 16-Line to 1-Line Multiplexer
MM54C150 MM74C150 16-Line to 1-Line Multiplexer MM72C19 MM82C19 TRI-STATE 16-Line to 1-Line Multiplexer General Description The MM54C150 MM74C150 and MM72C19 MM82C19 multiplex 16 digital lines to 1 output
More informationBUZ11. 30A, 50V, 0.040 Ohm, N-Channel Power MOSFET. Features. [ /Title (BUZ1 1) /Subject. (30A, 50V, 0.040 Ohm, N- Channel. Ordering Information
Data Sheet June 1999 File Number 2253.2 [ /Title (BUZ1 1) /Subject (3A, 5V,.4 Ohm, N- Channel Power MOS- FET) /Autho r () /Keywords (Intersil Corporation, N- Channel Power MOS- FET, TO- 22AB ) /Creator
More informationCD4040BC, 12-Stage Ripple Carry Binary Counters CD4060BC, 14-Stage Ripple Carry Binary Counters
CD4040BC, 12-Stage Ripple Carry Binary Counters CD4060BC, 14-Stage Ripple Carry Binary Counters Features Wide supply voltage range: 3.0V to 15V High noise immunity: 0.45 V DD (Typ.) Low power TTL compatibility:
More informationPAM2804. Pin Assignments. Description. Applications. Features. Typical Applications Circuit 1A STEP-DOWN CONSTANT CURRENT, HIGH EFFICIENCY LED DRIVER
1A STEP-DOWN CONSTANT CURRENT, HIGH EFFICIENCY LED DRIER Description Pin Assignments The is a step-down constant current LED driver. When the input voltage is down to lower than LED forward voltage, then
More information74HC377; 74HCT377. 1. General description. 2. Features and benefits. 3. Ordering information
Rev. 4 24 February 2016 Product data sheet 1. General description 2. Features and benefits 3. Ordering information The is an octal positive-edge triggered D-type flip-flop. The device features clock (CP)
More informationSURFACE MOUNT LED LAMP STANDARD BRIGHT 0606
PACKAGE DIMENSIONS 0.075 (1.9) 0.063 (1.6) 0.035 (0.9) TOP 0.047 (1.2) 0.012 (0.3) 0.032 [0.8] SIDE 0.043 [1.1] 1 3 0.020 [0.5] 2 4 BOTTOM CATHODE MASK 1 2 3 4 HER / AlGaAs Red / Yellow (for-34) Green
More informationDesigning With the SN54/74LS123. SDLA006A March 1997
Designing With the SN54/74LS23 SDLA6A March 997 IMPORTANT NOTICE Texas Instruments (TI) reserves the right to make changes to its products or to discontinue any semiconductor product or service without
More informationLM386 Low Voltage Audio Power Amplifier
Low Voltage Audio Power Amplifier General Description The LM386 is a power amplifier designed for use in low voltage consumer applications. The gain is internally set to 20 to keep external part count
More informationcss Custom Silicon Solutions, Inc.
css Custom Silicon Solutions, Inc. CSS555(C) CSS555/ PART DESCRIPTION The CSS555 is a micro-power version of the popular 555 Timer IC. It is pin-for-pin compatible with the standard 555 timer and features
More informationProduct Datasheet P1110 915 MHz RF Powerharvester Receiver
DESCRIPTION The Powercast P1110 Powerharvester receiver is an RF energy harvesting device that converts RF to DC. Housed in a compact SMD package, the P1110 receiver provides RF energy harvesting and power
More information74HC175; 74HCT175. Quad D-type flip-flop with reset; positive-edge trigger
Rev. 5 29 January 2016 Product data sheet 1. General description 2. Features and benefits 3. Ordering information The is a quad positive-edge triggered D-type flip-flop with individual data inputs (Dn)
More informationTS321 Low Power Single Operational Amplifier
SOT-25 Pin Definition: 1. Input + 2. Ground 3. Input - 4. Output 5. Vcc General Description The TS321 brings performance and economy to low power systems. With high unity gain frequency and a guaranteed
More informationLM1596 LM1496 Balanced Modulator-Demodulator
LM1596 LM1496 Balanced Modulator-Demodulator General Description The LM1596 LM1496 are doubled balanced modulator-demodulators which produce an output voltage proportional to the product of an input (signal)
More informationLM139/LM239/LM339/LM2901/LM3302 Low Power Low Offset Voltage Quad Comparators
Low Power Low Offset Voltage Quad Comparators General Description The LM139 series consists of four independent precision voltage comparators with an offset voltage specification as low as 2 mv max for
More informationDM9368 7-Segment Decoder/Driver/Latch with Constant Current Source Outputs
DM9368 7-Segment Decoder/Driver/Latch with Constant Current Source Outputs General Description The DM9368 is a 7-segment decoder driver incorporating input latches and constant current output circuits
More informationICL8038. Features. Precision Waveform Generator/Voltage Controlled Oscillator. Ordering Information. Pinout. Functional Diagram
Semiconductor IL0 September 99 File Number 4. Precision Waveform Generator/Voltage ontrolled Oscillator The IL0 waveform generator is a monolithic integrated circuit capable of producing high accuracy
More informationwww.jameco.com 1-800-831-4242
Distributed by: www.jameco.com 1-800-831-4242 The content and copyrights of the attached material are the property of its owner. LF411 Low Offset, Low Drift JFET Input Operational Amplifier General Description
More informationDM74LS151 1-of-8 Line Data Selector/Multiplexer
1-of-8 Line Data Selector/Multiplexer General Description This data selector/multiplexer contains full on-chip decoding to select the desired data source. The DM74LS151 selects one-of-eight data sources.
More informationTSL250, TSL251, TLS252 LIGHT-TO-VOLTAGE OPTICAL SENSORS
TSL50, TSL5, TLS5 SOES004C AUGUST 99 REVISED NOVEMBER 995 Monolithic Silicon IC Containing Photodiode, Operational Amplifier, and Feedback Components Converts Light Intensity to Output Voltage High Irradiance
More informationLM56 Dual Output Low Power Thermostat
Dual Output Low Power Thermostat General Description The LM56 is a precision low power thermostat. Two stable temperature trip points (V T1 and V T2 ) are generated by dividing down the LM56 1.250V bandgap
More informationLM381 LM381A Low Noise Dual Preamplifier
LM381 LM381A Low Noise Dual Preamplifier General Description The LM381 LM381A is a dual preamplifier for the amplification of low level signals in applications requiring optimum noise performance Each
More informationVN05N. High side smart power solid state relay PENTAWATT. Features. Description
High side smart power solid state relay Features Type V DSS R DS(on) I OUT V CC VN05N 60 V 0.18 Ω 13 A 26 V Output current (continuous): 13A @ Tc=25 C 5V logic level compatible input Thermal shutdown Under
More informationLH0091 True RMS to DC Converter
LH0091 True RMS to DC Converter General Description The LH0091 rms to dc converter generates a dc output equal to the rms value of any input per the transfer function E OUT(DC) e 0 1 T T 0 E IN 2 (t) dt
More informationunit:mm 3006B-DIP16 0.71 2.54 0.48
Ordering number:enn505g Monolithic Linear IC LA3361 PLL FM Multiplex Stereo Demodulator Overview The LA3361, PLL FM multiplex stereo demodulator, is designed for low supply voltage-use appliance such as
More informationSN54HC191, SN74HC191 4-BIT SYNCHRONOUS UP/DOWN BINARY COUNTERS
Single Down/Up Count-Control Line Look-Ahead Circuitry Enhances Speed of Cascaded Counters Fully Synchronous in Count Modes Asynchronously Presettable With Load Control Package Options Include Plastic
More informationLOW POWER SPREAD SPECTRUM OSCILLATOR
LOW POWER SPREAD SPECTRUM OSCILLATOR SERIES LPSSO WITH SPREAD-OFF FUNCTION 1.0 110.0 MHz FEATURES + 100% pin-to-pin drop-in replacement to quartz and MEMS based XO + Low Power Spread Spectrum Oscillator
More information