DVCC V CC PART MAX1840EUB MAX1841EUB TOP VIEW SIM OR SMART CARD. Maxim Integrated Products 1

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1 ; Rev ; 4/ Low-Voltage SIM/Smart Card General Description The MAX184/ subscriber identity module (SIM)/smart card level translators provide level shifting and electrostatic discharge (ESD) protection for SIM and smart card ports. These devices integrate two unidirectional level shifters for the reset and clock signals, a bidirectional level shifter for the serial data stream, and ±1kV ESD protection on all card contacts. The MAX184 includes a SHDN control input to aid insertion and removal of SIM and smart cards, while the includes a system-side data driver to support system controllers without open-drain outputs. The logic supply voltage range is +1.4V to +5.5V for the controller side and +1.7V to +5.5V for the card side. Total supply current is 1.µA. Both devices automatically shut down when either power supply is removed. For a complete SIM card interface, combine the MAX184/ with the MAX1686H V/3V/5V regulated charge pump. The MAX184/ are available in ultra-small 1-pin µmax packages that are only 1.9mm high and half the area of an 8-pin SO. The MAX184/ are compliant with GSM test specifications and Applications SIM Interface in GSM Cellular Telephones Smart Card Readers Logic Level Translation SPI /QSPI /MICROWIRE Level Translation Typical Operating Circuit Features SIM/Smart Card Level Shifting +1.4V to +5.5V Controller Voltage Range +1.7V to +5.5V Card Voltage Range ±1kV ESD Card Socket Protection Allows Level Translation with D or D Automatically Shuts Down When Either Supply Is Removed Card Contacts Actively Pulled Low During Shutdown 1µA Total Quiescent Supply Current.1µA Total Shutdown Supply Current Ultra-Small 1-Pin µmax Package Compliant with GSM Test Specifications and PART MAX184EUB EUB Ordering Information TEMP. RANGE -4 C to +85 C -4 C to +85 C PIN-PACKAGE 1 µmax 1 µmax Pin Configuration MAX184/ D CONTROLLER D DVCC MAX184 SIM OR SMART CARD TOP VIEW 1 1 D SHDN (DDRV) MAX µmax OPTNAL ( ) ARE FOR. OPTNAL * SHDN FOR MAX184 ONLY; DDRV FOR ONLY. SPI and QSPI are trademarks of Motorola, Inc. MICROWIRE is a trademark of National Semiconductor Corp. Maxim Integrated Products 1 For free samples and the latest literature, visit or phone For small orders, phone

2 MAX184/ ABSOLUTE MAXIMUM RATINGS D, to...-.3v to +6.V,,, DDRV, SHDN to...-.3v to (D +.3V),, to...-.3v to ( +.3V) Continuous Power Dissipation (T A = +7 C) 1-Pin µmax (derate 5.6mW/ C above +7 C)...444mW Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. ELECTRICAL CHARACTERISTICS Operating Temperature Range...-4 C to +85 C Storage Temperature Range C to +15 C Junction Temperature C Lead Temperature (soldering, 1s)...+3 C (Figure 1, D = +1.8V; = +1.8V, +3.V, or +5.V; SHDN = D, = = or D, =, = DDRV = D, C = C = C = C = 3pF, T A = -4 C to +85 C, unless otherwise noted. Typical values are at T A = +25 C.) (Note1) PARAMETER SYMBOL CONDITNS MIN TYP MAX UNITS POWER SUPPLIES D Operating Range D V Operating Range V static.1.5 D Operating Current I DVCC clocked at 1.625MHz from to D with 5% duty cycle 2.5 µa clocked at 3.25MHz from to D with 5% duty cycle 5 static.9 3. µa Operating Current I VCC clocked at 1.625MHz from to D with 5% duty cycle clocked at 3.25MHz from to D with 5% duty cycle.4.8 ma Total Shutdown Current I SHDN (MAX184 only), or D = I OFF = I VCC + I DVCC, SHDN = or =.1 1 µa,, SHDN, DDRV LOGIC INPUTS Digital Input Low Threshold V IL.2 D V Digital Input High Threshold V IH.7 D V Input Leakage Current.1 1 µa, OUTPUTS Digital Output Low Level V OL I SINK = 2µA.4 V I SOURCE = 2µA.9 Digital Output High Level V OH I SOURCE = 2µA.8 VCC V INPUT/OUTPUT Pullup Resistance R Between and D kω Input Low Threshold V IL() (Note 2).3 V Input High Threshold V IH() (Note 3) D -.6 V Input Low Current I IL = 5.V 1 ma Input High Current I IH 2 µa 2

3 ELECTRICAL CHARACTERISTICS (continued) (Figure 1, D = +1.8V; = +1.8V, +3.V, or +5.V; SHDN = D, = = or D, =, = DDRV = D, C = C = C = C = 3pF, T A = -4 C to +85 C, unless otherwise noted. Typical values are at T A = +25 C.) (Note1) PARAMETER SYMBOL CONDITNS MIN TYP MAX =, I SINK = 1µA.4 Output Low Level V OL() D = 3.V, =, I SINK = 2µA.4 Output High Level (INPUT/OUTPUT) V OH() I SOURCE = 1µA.7 D V D = 3.V, I SOURCE = 2µA.7 D Pullup Resistance R Between and kω Input Low Threshold V IL() I IL(MAX) = 1mA (Note 2).3 V Input High Threshold V IH() I IH(MAX) = ±2µA (Note 3).7 V Input Low Current I IL 1 ma Input High Current I IH 2 µa Output Low Level V OL() = or DDRV =, I SINK = 2µA UNITS V.4 V Output High Level V OH() I SOURCE = 2µA.8 V SHUTDOWN OUTPUT LEVELS Shutdown Output Levels (,, ) TIMING I SINK = 2µA, SHDN =, = = = D (MAX184 only).4 V I SINK = 2µA, D =, SHDN (MAX184) = DDRV () = =.4 V = = D I SINK = 2µA, =, SHDN (MAX184) = DDRV () = =.4 V = = D MAX184/ Maximum Frequency (Notes 4, 5) = 2.7V to 5.5V, D = 1.4V to 2.7V 5 2 = 1.7V to 3.6V, D = 1.4V to 2.25V 5 15 MHz Note 1: Specifications to -4 C are guaranteed by design, not production tested. Note 2: V IL is defined as the voltage at which the output (/) voltage equals.5v. Note 3: V IH is defined as the voltage at which the output (/) voltage exceeds the input (/) voltage by 1mV. Note 4: Timing specifications are guaranteed by design, not production tested. Note 5: The maximum frequency is defined as the output duty cycle remaining in the 4% to 6% range when the 5% is applied. has 5ns rise and fall times; levels are to D. Input and output levels are measured at 5% of the waveform. 3

4 MAX184/ Typical Operating Characteristics (Circuit of Figure 1, D = 3.V, = +5.V, DDRV or = D, = =, T A = +25 C, unless otherwise noted.) vs. CLOCK FREQUENCY ( STATIC) OR DDRV = D TO D SQUARE WAVE = 5V = 3V = 1.8V FREQUENCY (MHz) MAX184/ vs. CARD-SIDE SUPPLY VOLTAGE ( STATIC) OR DDRV = D TO D SQUARE WAVE f = 3.25MHz f = 1.625MHz (V) MAX184/ vs. TEMPERATURE ( STATIC) = 5V = 3V = 1.8V.4 OR DDRV = D TO D SQUARE WAVE TEMPERATURE ( C) MAX184/ vs. CLOCK FREQUENCY ( ACTIVE) f OR f DDRV = f /372 TO D SQUARE WAVE = 5V = 3V = 1.8V FREQUENCY (MHz) MAX184/ vs. CARD-SIDE SUPPLY VOLTAGE ( ACTIVE) f OR f DDRV = f /372 TO D SQUARE WAVE f = 3.25MHz f = 1.625MHz (V) MAX184/ vs. TEMPERATURE ( ACTIVE) f OR f DDRV = f /372 TO D SQUARE WAVE = 5V = 3V = 1.8V TEMPERATURE ( C) MAX184/1-6 TO OR TO WAVEFORM (3V TO 5V) MAX184/1-7 TO OR TO WAVEFORM (3V TO 1.8V) MAX184/1-8 TO OR TO WAVEFORM (1.8V TO 1.8V) MAX184/1-9 3V OR 3V OR 1.8V OR 1V/div 5V 1.8V OR OR 1V/div 1.8V OR 1V/div 2ns/div 2ns/div 2ns/div 4

5 1.5V 1V UNDERVOLTAGE SHUTDOWN WAVEFORM MAX184/1-1 1ms/div Typical Operating Characteristics (continued) (Circuit of Figure 1, D = 3.V, = +5.V, DDRV or = D, = =, T A = +25 C, unless otherwise noted.).5v/div,, OR.5V/div 3V 3V 5V DDRV TO AND WAVEFORM ( ONLY) MAX184/1-11 1µs/div DDRV MAX184/ Pin Description PIN NAME MAX D DDRV 5 SHDN System Controller Data Input/Output. An open-drain with a 2kΩ pull-up resistor to D. For bidirectional data transfer, connect to an open-drain controller output capable of sinking 1mA while pulling low. If the controller is not open-drain, use DDRV to send data and to receive data. System Controller Clock Input System Controller Reset Input System Controller and Card Ground FUNCTN Supply Voltage for System Controller Digital Pins. Set at +1.4V to +5.5V. Optional System Controller Data Input. Connect to controllers without an open-drain output. When not used, connect DDRV to D. Shutdown Mode Input. Driving SHDN low reduces the total supply current to less than 1µA. In shutdown mode,,, and are actively pulled low and the transfer gate between and is disabled. When not used, connect SHDN to D. Reset Output to Card. Actively pulled low during shutdown. Clock Output to Card. Actively pulled low during shutdown. Supply Voltage for Card-Side Digital Pins. Set at +1.7V to +5.5V. Proper supply bypassing is required to meet ±1kV ESD specifications. Card-Side Bidirectional Input/Output. An open-drain output with a 1kΩ pull-up resistor to. For bidirectional data transfer, connect to an open-drain card output capable of sinking 1mA while pulling low. Actively pulled low during shutdown. 5

6 MAX184/ Detailed Description The MAX184/ provide the necessary level translation for interfacing with SIMs and smart cards in multivoltage systems. These devices operate with logic supply voltages between +1.4V and +5.5V on the controller side (D ) and between +1.7V and +5.5V on the card side ( ). The total supply current (IDVCC + IVCC) is 1µA while operating in an idle state (see Electrical Characteristics). Figure 1 shows the MAX184/ test circuit. The Typical Application Circuit appears at the end of this data sheet. Level Translation The MAX184/ provide level translators for a clock input, a reset input, and a bidirectional data. The clock and reset inputs ( and ) are level shifted from the controller-side supply rails (D to ) to the card-side supply rails ( to ). When connected to an open-drain controller output, and provide bidirectional level translation. All level translation is valid for D or D. The MAX184/ contain internal pull up resistors from to the controller-side supply (D ) and from to the card-side supply ( ). For push-pull controller outputs, see the Data Driver section for bidirectional data translation. Data Driver ( Only) When using a microcontroller (µc) without an open-drain output, use the data driver (DDRV) input to send data to the SIM/smart card, while provides the controllerside output for bidirectional data transfer. When not used, connect DDRV to D to reduce total supply current. Shutdown Mode For the MAX184, drive SHDN low to activate shutdown. Connect SHDN to D or drive high for normal operation. To allow for card insertion and removal, shutdown mode actively pulls,, and low; it also disconnects the internal 1kΩ pull up resistor from to prevent excessive current draw. Shutdown mode reduces the total supply current (I DVCC + I VCC ) to.1µa. SIM/Smart Card Insertion/Removal The SIM/smart card specifications require that the cardside pins (,,, ) be at ground potential prior to inserting the SIM/smart card. For applications using the MAX1686H (Figure 3), the easiest way to achieve this is by shutting down the MAX1686H or by +1.8V 3pF DVCC MAX184 driving SHDN (MAX184 only) low. If specific sequencing is desired, pull low by driving either or DDRV ( only) low, and pull and low by driving and low, respectively. ESD Protection As with all Maxim devices, ESD-protection structures on all pins protect against ESDs encountered during handling and assembly. For further protection during card insertion and removal, the pins that connect to the card socket (,,,, and ) provide protection against ±1kV of ESD. The ESD structures withstand high ESD in all states: normal operation, shutdown, and power-down. After an ESD event, the MAX184/ continue working without latchup. A 1µF bypass capacitor from to is required to exceed ±1kV ESD specifications. ESD Test Conditions ESD performance depends on a variety of conditions. Contact Maxim for a reliability report documenting test setup, test methodology, and test results. Applications Information SIM/Smart Card Interface To provide 5V when interfacing with a 5V SIM/smart card, +3V systems require a DC-DC converter. The MAX1686H +5V regulating charge pump for SIM cards provides 3pF * SHDN FOR MAX184 ONLY; DDRV FOR ONLY. NOTE: ALL CAPACITANCES INCLUDE CAPACITIVE LOADS OF TEST PROBES AND BOARD LAYOUT. Figure 1. MAX184/ Test Circuit 3pF +1.8V, +3.V, OR +5.V 3pF 6

7 CONTROLLER +3.V D OPTNAL OPTNAL IN MAX1686 OUT MAX1686H 3/5 SHDN P DVCC CXN MAX184 * SHDN FOR MAX184 ONLY; DDRV FOR ONLY. CXP 3.V OR 5.V SIM OR SMART CARD Figure 2. Using MAX184/ and MAX1686/MAX1686H Charge Pump for SIM Card Applications +5.V CONTROLLER D OPTNAL OPTNAL IN OUT MAX8867 SET MAX886 SHDN P DVCC MAX184 * SHDN FOR MAX184 ONLY; DDRV FOR ONLY. +3.3V SPI/QSPI/ MICROWIRE CS S DOUT DIN Figure 3. MAX184/ with SPI/QSPI/MICROWIRE Interfaces MAX184/ V/3V/5V for full compatibility with SIM/smart-card specifications. Figure 2 shows the charge pump for SIM card applications. Alternatively, the MAX619 generates a regulated 5V from input voltages as low as 2V. SPI/QSPI/MICROWIRE Interface The MAX184/ are also useful as 3V/5V level shifters in SPI, QSPI, and MICROWIRE applications (Figure 3). On the slave side, connect to S, to CS, and to DOUT and DIN. The unidirectional level shifters transfer chip select and clock signals to the slave device(s), while the bidirectional level shifter transfers data. Chip Information TRANSISTOR COUNT: 211 7

8 MAX184/ D CONTROLLER D 1µF OPTNAL OPTNAL D 2k SHUTDOWN CONTROL Typical Application Circuit 1k 1µF SIM OR SMART CARD MAX184 * SHDN FOR MAX184 ONLY; DDRV FOR ONLY. Packaging Information 1LUMAX.EPS Note: The MAX184/ do not have an exposed pad. Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 8 Maxim Integrated Products, 12 San Gabriel Drive, Sunnyvale, CA Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products.

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