Features Y Typical propagation delay. Count up to Q 28 ns. Y Typical operating frequency 27 MHz. Y Wide power supply range 2 6V

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1 MM54HC192 MM74HC192 Synchronous Decade Up Down Counters MM54HC193 MM74HC193 Synchronous Binary Up Down Counters General Description These high speed synchronous counters utilize advanced silicon-gate CMOS technology to achieve the high noise immunity and low power consumption of CMOS technology along with the speeds of low power Schottky TTL The MM54HC192 MM74HC192 is a decade counter and the MM54HC193 MM74HC193 is a binary counter Both counters have two separate clock inputs an UP COUNT input and a DOWN COUNT input All outputs of the flip-flops are simultaneously triggered on the low to high transition of either clock while the other input is held high The direction of counting is determined by which input is clocked These counters may be preset by entering the desired data on the DATA A DATA B DATA C and DATA D inputs When the LOAD input is taken low the data is loaded independently of either clock input This feature allows the counters to be used as divide-by-n counters by modifying the count length with the preset inputs In addition both counters can also be cleared This is accomplished by inputting a high on the CLEAR input All 4 internal stages are set to a low level independently of either COUNT input Connection Diagram Dual-In-Line Package January 1988 Both a BORROW and CARRY output are provided to enable cascading of both up and down counting functions The BORROW output produces a negative going pulse when the counter underflows and the CARRY outputs a pulse when the counter overflows The counters can be cascaded by connecting the CARRY and BORROW outputs of one device to the COUNT UP and COUNT DOWN inputs respectively of the next device All inputs are protected from damage due to static discharge by diodes to V CC and ground Features Y Typical propagation delay Count up to Q 28 ns Y Typical operating frequency 27 MHz Y Wide power supply range 2 6V Y Low quiescent supply current 80 ma maximum (74HC Series) Y Low input current 1 ma maximum Y 4 ma output drive Truth Table Up Count Down Clear Load Function u H L H Count Up H u L H Count Down X X H X Clear X X L L Load H e high level L e low level u e transition from low-to-high X e don t care MM54HC192 MM74HC192 Synchronous Decade Up Down Counters MM54HC193 MM74HC193 Synchronous Binary Up Down Counters TL F Order Number MM54HC or MM74HC C1995 National Semiconductor Corporation TL F 5011 RRD-B30M115 Printed in U S A

2 Absolute Maximum Ratings (Notes1 2) If Military Aerospace specified devices are required please contact the National Semiconductor Sales Office Distributors for availability and specifications Supply Voltage (V CC ) b0 5 to a7 0V DC Input Voltage (V IN ) b1 5 to V CC a1 5V DC Output Voltage (V OUT ) b0 5 to V CC a0 5V Clamp Diode Current (I IK I OK ) g20 ma DC Output Current per pin (I OUT ) g25 ma DC V CC or GND Current per pin (I CC ) g50 ma Storage Temperature Range (T STG ) b65 Ctoa150 C Power Dissipation (P D ) (Note 3) 600 mw S O Package only 500 mw Lead Temp (T L ) (Soldering 10 seconds) 260 C Operating Conditions Min Max Units Supply Voltage (V CC ) 2 6 V DC Input or Output Voltage 0 V CC V (V IN V OUT ) Operating Temp Range (T A ) MM74HC b40 a85 C MM54HC b55 a125 C Input Rise or Fall Times (t r t f ) V CC e2v 1000 ns V CC e4 5V 500 ns V CC e6 0V 400 ns DC Electrical Characteristics (Note 4) 74HC 54HC T A e25 C Symbol Parameter Conditions V CC T A eb40 to 85 C T A eb55 to 125 C Units Typ Guaranteed Limits V IH Minimum High Level 2 0V V Input Voltage 4 5V V 6 0V V V IL Maximum Low Level 2 0V V Input Voltage 4 5V V 6 0V V V OH Minimum High Level V IN ev IH or V IL Output Voltage li OUTl s 20 ma 2 0V V 4 5V V 6 0V V V IN ev IH or V IL li OUTl s 4 0 ma 4 5V V li OUTl s 5 2 ma 6 0V V V OL Maximum Low Level V IN ev IH or V IL Output Voltage li OUTl s 20 ma 2 0V V 4 5V V 6 0V V V IN ev IH or V IL li OUTl s 4 0 ma 4 5V V li OUTl s 5 2 ma 6 0V V I IN Maximum Input V IN ev CC or GND 6 0V g0 1 g1 0 g1 0 ma Current I CC Maximum Quiescent V IN ev CC or GND 6 0V ma Supply Current I OUT e0 ma Note 1 Absolute Maximum Ratings are those values beyond which damage to the device may occur Note 2 Unless otherwise specified all voltages are referenced to ground Note 3 Power Dissipation temperature derating plastic N package b12 mw C from 65 C to85 C ceramic J package b12 mw C from 100 C to125 C Note 4 For a power supply of 5V g10% the worst case output voltages (V OH and V OL ) occur for HC at 4 5V Thus the 4 5V values should be used when designing with this supply Worst case V IH and V IL occur at V CC e5 5V and 4 5V respectively (The V IH value at 5 5V is 3 85V ) The worst case leakage current (I IN I CC and I OZ ) occur for CMOS at the higher voltage and so the 6 0V values should be used V IL limits are currently tested at 20% of V CC The above V IL specification (30% of V CC ) will be implemented no later than Q1 CY 89 2

3 AC Electrical Characteristics T A e25 C V CC e 5 0V t r et f e6 ns C L e15 pf (unless otherwise specified) Symbol Parameter Conditions Typ f MAX Maximum Clock Frequency Guaranteed Limit Units Count Up MHz Count Down MHz t PLH Maximum Propagation Delay ns Low to High Count Up to Carry t PHL Maximum Propagation Delay ns t PLH Maximum Propagation Delay ns Low to High Count Down to t PHL Maximum Propagation Delay Borrow ns t PLH Maximum Propagation Delay ns Low to High Count Up Or t PHL Maximum Propagation Delay Down to Q ns t PLH Maximum Propagation Delay ns Low to High Data or Load to Q t PHL Maximum Propagation Delay ns t PHL Maximum Propagation Delay ns Clear to Q t W Minimum Pulse Width Clear HC ns HC ns HC ns Load HC ns Count Up Down ns t SD Minimum Setup time Data to Load ns t HD Minimum Hold Time b3 0 ns t REM Minimum Removal Time Clear Inactive to Clock 10 ns AC Electrical Characteristics V CC e 2 0V to 6 0V C L e 50 pf t r et f e6ns 74HC 54HC T A e25 C Symbol Parameter Conditions V CC T A eb40 to 85 C T A eb55 to 125 C Units f MAX Maximum Clock Frequency Typ Guaranteed Limits 2 0V MHz Count Up 4 5V MHz 6 0V MHz 2 0V MHz Count Down 4 5V MHz 6 0V MHz t PLH Maximum Propagation Delay 2 0V ns Low to High 4 5V ns Count Up 6 0V ns t PHL Maximum Propagation Delay to Carry 2 0V ns 4 5V ns 6 0V ns 3

4 AC Electrical Characteristics (Continued) V CC e 2 0V to 6 0V C L e 50 pf t r et f e6ns 74HC 54HC T A e25 C Symbol Parameter Conditions V CC T A eb40 to 85 C T A eb55 to 125 C Units Typ Guaranteed Limits t PLH t PHL Maximum Propagation Delay Count Down 2 0V ns to Borrow 4 5V ns 6 0V ns t TLH t THL Maximum Output Rise 2 0V ns and Fall Time 4 5V ns 6 0V ns t PLH Maximum Propagation Delay 2 0V ns Low to High 4 5V ns Count Up Or 6 0V ns t PHL Maximum Propagation Delay Down to Q 2 0V ns 4 5V ns 6 0V ns t PLH Maximum Propagation Delay 2 0V ns Low to High 4 5V ns Data or 6 0V ns t PHL Maximum Propagation Delay Load to Q 2 0V ns 4 5V ns 6 0V ns t PHL Maximum Propagation Delay 2 0V ns Clear to Q 4 5V ns 6 0V ns Clear 2 0V ns or HC V ns Load 6 0V ns 2 0V ns Load HC V ns 6 0V ns t W Minimum Pulse Width 2 0V ns Count Up Down 4 5V ns 6 0V ns 2 0V ns Clear HC V ns 6 0V ns 2 0V ns t SD Minimum Setup Time 4 5V ns Data 6 0V ns To Load 2 0V b ns t HD Minimum Hold Time 4 5V b ns 6 0V b ns t REM Minimum Removal Time Clear Inactive 2 0V b ns to Clock 4 5V b ns 6 0V b ns t r t f Maximum Count Up or Down Input Rise Fall Time 2 0V ns 4 5V ns 6 0V ns C IN Input Capacitance pf C PD Power Dissipation Capacitance (Note 5) 100 pf Note 5 C PD determines the no load dynamic power consumption P D ec PD V CC 2 fai CC V CC and the no load dynamic current consumption I S ec PD V CC fai CC 4

5 Logic Diagrams MM54HC192 Synchronous 4-Bit Up Down Decade Counter TL F

6 Logic Diagrams (Continued) MM54HC193 Synchronous 4-Bit Up Down Binary Counter TL F

7 Logic Waveforms HC192 Synchronous Decade Counters Typical Clear Load and Count Sequences Sequences (1) Clear outputs to zero (2) Load (preset) to BCD seven (3) Count up to eight nine carry zero one and two (4) Count down to one zero borrow nine eight and seven TL F HC193 Synchronous Binary Counters Typical Clear Load and Count Sequences TL F Sequence (1) Clear outputs to zero (2) Load (preset) to binary thirteen (3) Count up to fourteen fifteen carry zero one and two (4) Count down to one zero borrow fifteen fourteen and thirteen Note A Clear overrides load data and count inputs Note B When counting up count-down input must be high when counting down count-up input must be high 7

8 MM54HC192 MM74HC192 Synchronous Decade Up Down Counters MM54HC193 MM74HC193 Synchronous Binary Up Down Counters Physical Dimensions inches (millimeters) LIFE SUPPORT POLICY Order Number MM54HC192J MM54HC193J MM74HC192J or MM74HC193J NS Package J16A Order Number MM74HC192N or MM74HC193N NS Package N16E NATIONAL 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 NATIONAL SEMICONDUCTOR CORPORATION As used herein 1 Life support devices or systems are devices or 2 A critical component is any component of a life systems which (a) are intended for surgical implant support device or system whose failure to perform can into the body or (b) support or sustain life and whose be reasonably expected to cause the failure of the life failure to perform when properly used in accordance support device or system or to affect its safety or with instructions for use provided in the labeling can effectiveness be reasonably expected to result in a significant injury to the user National Semiconductor National Semiconductor National Semiconductor National Semiconductor Corporation Europe Hong Kong Ltd Japan Ltd 1111 West Bardin Road Fax (a49) th Floor Straight Block Tel Arlington TX cnjwge tevm2 nsc com Ocean Centre 5 Canton Rd Fax Tel 1(800) Deutsch Tel (a49) Tsimshatsui Kowloon Fax 1(800) English Tel (a49) Hong Kong Fran ais Tel (a49) Tel (852) Italiano Tel (a49) Fax (852) National does not assume any responsibility for use of any circuitry described no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and specifications

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