19-1847; Rev 1; 2/01 1µA, 2Mbps, Low-Voltage Level Translators in SC70 The MAX3370/MAX3371 logic level translators are ideal for applications interfacing low-voltage devices to other logic levels. Externally applied voltages set the logic levels of the MAX3370/MAX3371. The devices accept VCC from +2.5V to +5.5V and VL from +1.6V to +5.5V, allowing data transfer between low-voltage ASICs and higher voltage devices. The MAX3371 features a shutdown mode that reduces supply current to <1µA and puts the I/O pins in a high-impedance state. The MAX3370/MAX3371 are bidirectional level shifters, allowing data transfer from the VCC side to the VL side and from the VL side to the VCC side. Both devices operate at speeds up to 2Mbps with an active driver and up to 500kbps with an open-drain driver. The MAX3370/MAX3371 are available in space-saving 5-pin and 6-pin SC70 packages, respectively. Features ♦ Allow Bidirectional Level Translation ♦ Miniature SC70 Packages ♦ Operational Down to 1.6V ♦ Low Quiescent Current (<100µA) ♦ Ultra-Low (<1µA) Shutdown Supply Current (MAX3371) ♦ Three-State Outputs in Shutdown (MAX3371) ♦ 2Mbps (10pF Load) Push-Pull Driving ♦ 1Mbps (50pF Load) Push-Pull Driving ♦ 500kbps (30pF Load) Open-Drain Driving Ordering Information ________________________Applications Cell Phone Cradles TEMP. RANGE MAX3370EXK-T -40°C to +85°C MAX3371EXT-T -40°C to +85°C PART Cell Phone Hands-Free Kits Portable POS Systems PINTOP SHDN PACKAGE MARK 5 SC70-5 NO ABV 6 SC70-6 YES AAO Portable Communication Devices Smart Card Readers SPI™, MICROWIRE™, and I2C™ Level Translation Pin Configurations Low-Voltage ASIC Level Translation RS-232-Compatible Translation TOP VIEW I2C is a trademark of Philips Corp. VL 1 SPI is a trademark of Motorola, Inc. MICROWIRE is a trademark of National Semiconductor Corp. Typical Operating Circuit GND 2 VCC 4 I/O VCC 6 VCC 5 SHDN 4 I/O VCC MAX3370 I/O VL 3 +1.8V 5 +3.3V 1.8V SYSTEM CONTROLLER SHDN SC70-5 VCC VL * 3.3V SYSTEM VL 1 MAX3370 MAX3371 DATA I/O VL I/O VCC DATA GND 2 GND GND MAX3371 GND I/O VL 3 *MAX3371 ONLY SC70-6 †MAX3370/MAX3371 covered by U.S. Patent number 5,894,240. ________________________________________________________________ Maxim Integrated Products 1 For price, delivery, and to place orders, please contact Maxim Distribution at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. MAX3370/MAX3371† General Description MAX3370/MAX3371 1µA, 2Mbps, Low-Voltage Level Translators in SC70 ABSOLUTE MAXIMUM RATINGS VCC to GND ..............................................................-0.3V to +7V SHDN to GND ...............................................-0.3V to (VL + 0.3V) I/O VL to GND................................................-0.3V to (VL + 0.3V) VL, I/O VCC to GND ...................................-0.3V to (VCC + 0.3V) Short-Circuit Duration: I/O VL, I/O VCC to GND..........Continuous Continuous Power Dissipation (TA = +70°C) 5/6-Pin SC70 (derate 3.1mW/°C above +70°C) ...........245mW Operating Temperature Range ...........................-40°C to +85°C Storage Temperature Range .............................-65°C to +150°C Lead Temperature (soldering, 10s) .................................+300°C 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 (VCC = +2.5V to +5.5V, VL = +1.6V to +5.5V (Note 1), GND = 0; I/O VL, I/O VCC unconnected; TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.) (Note 2) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS 5.5 V POWER SUPPLIES VL Supply Range VCC Supply Range Supply Current from VCC Supply Current from VL VL (Note 1) VCC 1.6 5.5 V IQVCC 2.5 70 100 µA IQVL 5 100 µA VCC Shutdown Supply Current SHDN = GND, TA = +25°C, MAX3371 0.03 1 µA VL Shutdown Supply Current SHDN = GND, TA = +25°C, MAX3371 0.03 1 µA Three-State Output Leakage Current I/O VL, I/O VCC; SHDN = GND, TA = +25°C, MAX3371 0.02 1 µA VL - 0.2 V LOGIC LEVEL THRESHOLDS I/O VL Input Voltage High Threshold VIHL I/O VL Input Voltage Low Threshold VILL I/O VCC Input Voltage High Threshold VIHC I/O VCC Input Voltage Low Threshold VILC I/O VL Output Voltage High VOHL I/O VL sink current = 20µA, I/O VCC ≥ VCC - 0.4V (Note 3) I/O VL Output Voltage Low VOLL I/O VL sink current = 1mA, I/O VCC ≤ 0.2V (Note 3) I/O VCC Output Voltage High VOHC I/O VCC source current = 20µA, I/O VL ≥ VL - 0.2V (Note 3) I/O VCC Output Voltage Low VOLC I/O VCC sink current = 1mA, I/O VL ≤ 0.15V (Note 3) SHDN Input Voltage High VIH-SHDN SHDN Input Voltage Low VIL-SHDN 2 0.15 V VCC - 0.4 V 0.2 V 2/3 × VL V 0.4 2/3 × VCC V 0.4 2/3 × VL V V VL ≥ +1.8V 0.4 VL ≥ +1.6V 0.2 _______________________________________________________________________________________ V V 1µA, 2Mbps, Low-Voltage Level Translators in SC70 (VCC = +2.5V to +5.5V, VL = +1.6V to +5.5V (Note 1), GND = 0; I/O VL, I/O VCC unconnected; TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.) (Note 2) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS TIMING CHARACTERISTICS (RLOAD = 1MΩ, VCC = +2.5V, VL = +1.6V, I/O test signal Rail-to-Rail® unless otherwise noted, Figure 1) (Note 3) I/O VCC Rise Time (Note 4) tRVCC I/O VCC Fall Time (Note 4) tFVCC I/O VL Rise Time (Note 4) tRVL I/O VL Fall Time (Note 4) tFVL HIGH-to-LOW Transition Propagation Delay (Driving I/O VL) LOW-to-HIGH Transition Propagation Delay (Driving I/O VL) HIGH-to-LOW Transition Propagation Delay (Driving I/O VCC) LOW-to-HIGH Transition Propagation Delay (Driving I/O VCC) HIGH-to-LOW Transition Propagation Delay Device-to-Device Skew (Driving I/O VL) tPD-VCC-HL tPD-VCC-LH tPD-VL-HL tPD-VL-LH CLOAD = 10pF, data rate = 2Mbps (Note 5) 100 CLOAD = 50pF, data rate = 1Mbps 200 CLOAD = 30pF, data rate = 500kbps, open-drain drive 400 CLOAD = 10pF, data rate = 2Mbps (Note 5) 50 CLOAD = 50pF, data rate = 1Mbps 200 CLOAD = 30pF, data rate = 500kbps, open-drain drive 400 CLOAD = 10pF, data rate = 2Mbps (Note 5) 100 CLOAD = 50pF, data rate = 1Mbps 200 CLOAD = 30pF, data rate = 500kbps, open-drain drive 400 CLOAD = 10pF, data rate = 2Mbps (Note 5) 50 CLOAD = 50pF, data rate = 1Mbps 200 CLOAD = 30pF, data rate = 500kbps, open-drain drive 400 CLOAD = 10pF, data rate = 2Mbps (Note 5) 50 CLOAD = 50pF, data rate = 1Mbps 200 CLOAD = 30pF, data rate = 500kbps, open-drain drive 400 CLOAD = 10pF, data rate = 2Mbps (Note 5) 200 CLOAD = 50pF, data rate = 1Mbps 400 CLOAD = 30pF, data rate = 500kbps, open-drain drive 800 CLOAD = 10pF, data rate = 2Mbps (Note 5) 50 CLOAD = 50pF, data rate = 1Mbps 200 CLOAD = 30pF, data rate = 500kbps, open-drain drive 400 CLOAD = 10pF, data rate = 2Mbps (Note 5) 200 CLOAD = 50pF, data rate = 1Mbps 400 CLOAD = 30pF, data rate = 500kbps, open-drain drive 800 CLOAD = 10pF, data rate = 2Mbps (Note 3) 2 CLOAD = 50pF, data rate = 1Mbps 4 CLOAD = 30pF, data rate = 500kbps, open-drain drive 5 ns ns ns ns ns ns ns ns ns Rail-to-Rail is a registered trademark of Nippon Motorola Ltd. _______________________________________________________________________________________ 3 MAX3370/MAX3371 ELECTRICAL CHARACTERISTICS (continued) MAX3370/MAX3371 1µA, 2Mbps, Low-Voltage Level Translators in SC70 ELECTRICAL CHARACTERISTICS (continued) (VCC = +2.5V to +5.5V, VL = +1.6V to +5.5V (Note 1), GND = 0; I/O VL, I/O VCC unconnected; TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.) (Note 2) PARAMETER LOW-to-HIGH Transition Propagation Delay Device-to-Device Skew (Driving I/O VL) HIGH-to-LOW Transition Propagation Delay Device-to-Device Skew (Driving I/O VCC) LOW-to-HIGH Transition Propagation Delay Device-to-Device Skew (Driving I/O VCC) Maximum Data Rate SYMBOL CONDITIONS MIN TYP CLOAD = 10pF, data rate = 2Mbps (Note 3) 5 CLOAD = 50pF, data rate = 1Mbps 8 CLOAD = 30pF, data rate = 500kbps, open-drain drive 80 CLOAD = 10pF, data rate = 2Mbps (Note 3) 2 CLOAD = 50pF, data rate = 1Mbps 4 CLOAD = 30pF, data rate = 500kbps, open-drain drive 5 CLOAD = 10pF, data rate = 2Mbps (Note 3) 7 CLOAD = 50pF, data rate = 1Mbps 8 CLOAD = 30pF, data rate = 500kbps, open-drain drive 50 CLOAD = 10pF (Note 5) 2 3 CLOAD = 50pF 1 2 0.5 1 CLOAD = 30pF, open-drain drive MAX UNITS ns ns ns Mbps Note 1: VL must always be less than or equal to VCC. Note 2: All units are 100% production tested at TA = +25°C. Limits over the operating temperature range are guaranteed by design and not production tested. Note 3: Tested only at worst case: VCC = +2.5V, VL = +1.6V. Note 4: 10% to 90%. Note 5: Guaranteed by correlation to CLOAD = 50pF. 4 _______________________________________________________________________________________ 1µA, 2Mbps, Low-Voltage Level Translators in SC70 +2.5V +2.5V VL VL VCC DATA MAX3370 MAX3371 DATA I/O VL I/O VCC GND CLOAD RLOAD MAX3370/MAX3371 +1.6V +1.6V VCC MAX3370 MAX3371 I/O VL I/O VCC GND RLOAD CLOAD I/O VCC tRISE, tFALL ≤10ns I/O VL tRISE, tFALL ≤10ns tPD-VL-LH tPD-VCC-LH tPD-VL-HL tPD-VCC-HL I/O VL I/O VCC tRVL tRVCC tFVL tFVCC Figure 1b. Rail-to-Rail Driving I/O VCC Figure 1a. Rail-to-Rail Driving I/O VL +1.6V +2.5V VL +1.6V VCC MAX3370 MAX3371 I/O VL I/O VCC GND +2.5V VL DATA DATA RLOAD I/O VL tRISE, tFALL ≤10ns CLOAD CLOAD VCC MAX3370 MAX3371 I/O VL I/O VCC GND RLOAD I/O VCC tRISE, tFALL ≤10ns tPD-VCC-LH tPD-VCC-HL I/O VCC tPD-VL-LH tPD-VL-HL I/O VL tRVCC Figure 1c. Open-Drain Driving I/O VL tFVCC tRVL tFVL Figure 1d. Open-Drain Driving I/O VCC _______________________________________________________________________________________ 5 Typical Operating Characteristics (Driving I/O VL rail-to-rail, RL = 1MΩ, TA = +25°C, unless otherwise noted.) RATE = 500kbps, CLOAD = 30pF, OPEN-DRAIN DRIVE 100 VL = 1.8V VL = 1.8V 500 RATE = 1Mbps, CLOAD = 50pF RATE = 2Mbps, CLOAD = 10pF 400 96 IVCC (µA) IVL (µA) 98 600 MAX3370-01 102 MAX3370-02 VCC SUPPLY CURRENT vs. POWER-SUPPLY VOLTAGE VL SUPPLY CURRENT vs. POWER-SUPPLY VOLTAGE 94 92 300 200 RATE = 2Mbps, CLOAD = 10pF 90 100 88 0 3.0 3.5 4.0 4.5 5.0 2.5 5.5 3.0 3.5 4.0 4.5 5.0 VCC (V) VCC (V) VL SUPPLY CURRENT vs. TEMPERATURE VCC SUPPLY CURRENT vs. TEMPERATURE 98 VCC = 2.5V 97 450 MAX3370-03 99 5.5 400 MAX3370-04 2.5 VCC = 5.0V 350 96 VCC = 3.3V 95 94 IVCC (µA) IVL (µA) RATE = 500kbps, CLOAD = 30pF, OPEN-DRAIN DRIVE RATE = 1Mbps, CLOAD = 50pF 86 VL = 1.8V, RATE = 500kbps, CLOAD = 30pF, OPEN-DRAIN DRIVE 93 92 VCC = 5.0V VL = 1.8V, RATE = 500kbps, CLOAD = 30pF, OPEN-DRAIN DRIVE 300 250 VCC = 3.3V 200 91 150 90 VCC = 2.5V 100 89 -15 10 35 60 85 35 60 VCC SUPPLY CURRENT vs. LOAD CAPACITANCE MAX3370-05 VL = 1.8V VCC = 3.3V 680 RATE = 2Mbps, CLOAD = 10pF RATE = 1Mbps, CLOAD = 50pF 580 IVCC (µA) 100 95 90 RATE = 500kbps, CLOAD = 30pF, OPEN-DRAIN DRIVE RATE = 2Mbps, CLOAD = 10pF RATE = 1Mbps, CLOAD = 50pF 85 80 50 100 CLOAD (pF) 150 200 85 780 105 6 10 VL SUPPLY CURRENT vs. LOAD CAPACITANCE VL = 1.8V VCC = 3.3V 0 -15 TEMPERATURE (°C) 115 110 -40 TEMPERATURE (°C) MAX3370-06 -40 IVL (µA) MAX3370/MAX3371 1µA, 2Mbps, Low-Voltage Level Translators in SC70 480 380 280 180 RATE = 500kbps, CLOAD = 30pF, OPEN-DRAIN DRIVE 80 0 50 100 CLOAD (pF) 150 _______________________________________________________________________________________ 200 1µA, 2Mbps, Low-Voltage Level Translators in SC70 (Driving I/O VL rail-to-rail, RL = 1MΩ, TA = +25°C, unless otherwise noted.) PROPAGATION DELAY vs. LOAD CAPACITANCE (DRIVING I/O VL) LOW-TO-HIGH TRANSITION 35 30 25 20 HIGH-TO-LOW TRANSITION 15 I/O VL 25 0 HIGH-TO-LOW TRANSITION 20 1V/div 15 I/O VCC 10 10 0 LOW-TO-HIGH TRANSITION 5 0 MAX3370-09 30 5 MAX3370-08 VL = 1.8V VCC = 3.3V 0 50 100 150 200 0 CLOAD (pF) 50 100 150 100ns/div 200 CLOAD (pF) RAIL-TO-RAIL DRIVING (RATE = 1Mbps, CLOAD = 50pF, VCC = 3.3V, VL = 1.8V) OPEN-DRAIN DRIVING (RATE = 500kbps, CLOAD = 30pF, VCC = 3.3V, VL = 1.8V) MAX3370-11 MAX3370-10 I/O VL I/O VL 0 0 1V/div 1V/div I/O VCC I/O VCC 0 0 200ns/div 400ns/div OPEN-DRAIN DRIVING (RATE = 500kbps, CLOAD = 30pF, VCC = 5V, VL = 2.5V) MAX3371 EXITING SHUTDOWN I/O VL 0 MAX3370-13 0 MAX3370-12 PROPAGATION DELAY (ns) 40 PROPAGATION DELAY (ns) VL = 1.8V VCC = 3.3V 45 35 MAX3370-07 50 RAIL-TO-RAIL DRIVING (RATE = 2Mbps, CLOAD = 10pF, VCC = 3.3V, VL = 1.8V) PROPAGATION DELAY vs. LOAD CAPACITANCE (DRIVING I/O VCC) I/O VCC 0 2V/div I/O VL 0 2V/div I/O VCC VSHDN 0 0 400ns/div 100ns/div _______________________________________________________________________________________ 7 MAX3370/MAX3371 Typical Operating Characteristics (continued) MAX3370/MAX3371 1µA, 2Mbps, Low-Voltage Level Translators in SC70 Pin Description PIN NAME FUNCTION MAX3370 MAX3371 1 1 VL 2 2 GND Ground 3 3 I/O VL Input/Output Referred to VL 4 4 I/O VCC 5 6 VCC — 5 SHDN Logic Supply Voltage Input/Output Referred to VCC Power-Supply Voltage Shutdown. A high turns on the device. A low shuts down the device. I/O VCC and I/O VL are high impedance in shutdown. Functional Diagram Detailed Description The MAX3370/MAX3371 provide the necessary level translation to allow data transfer in a multivoltage system. These devices transmit data between an I/O pin referenced to VCC and an I/O pin referenced to VL. The VCC supply voltage range is from +2.5V to +5.5V, and the VL supply voltage range is between +1.6V and +5.5V. The MAX3371 features a shutdown mode in which I/O VCC and I/O VL are placed in a high-impedance state and supply current drops to 1µA. The MAX3370/MAX3371 are bidirectional level shifters allowing data transfer from the VCC side to the VL side, and from the VL side to the VCC side. Both devices operate at speeds up to 2Mbps with an active driver and up to 500kbps with an open-drain driver. VCC VL MAX3370 S2 R1 I/O VL S1 R2 I/O VCC MNSW SPEEDUP GND Level Translation The MAX3370/MAX3371 provide bidirectional level translation between I/O pins referred to VCC and VL. I/O VCC and I/O VL are internally pulled up to their respective power-supply rails through 10kΩ resistors. VCC must be between +2.5V and +5.5V, and VL must be between +1.6V and +5.5V. For proper operation, VL can not exceed VCC. The MAX3370/MAX3371 can operate at data rates up to 2Mbps when driven by an active (push-pull) driver with a 10pF load, 1Mbps when driven by an active driver with a 50pF load, or 500kbps when driven by an open-drain driver with a 30pF load. The internal pullups allow these devices to be driven by open-drain drivers. MAX3371 Shutdown Mode The MAX3371 enters a low-power shutdown mode when SHDN is driven low. Connect SHDN to VL or drive high for normal operation. Activating shutdown mode disconnects the internal 10kΩ pullup resistors on I/O 8 V CC and I/O V L . As a result, the supply current decreases to <1µA, and the I/O lines are high impedance. The high impedance I/O lines in shutdown allow use in a multidrop network. When in shutdown, I/O VL can be driven to VL and I/O VCC can be driven to VCC. Speed-Up The speed-up circuit is a one-shot generator that helps the rise time of the output waveform in the low-to-high transition. When triggered, switches S1 and S2 turn on for 320ns to pull up I/O VL and I/O VCC. This greatly reduces the rise time and propagation delay for the low-to-high transition as well as improves the duty cycle (closer to 50% for an ideal square-wave input). See the scope plots in the Typical Operating Characteristics for the speed-up circuitry in operation. _______________________________________________________________________________________ 1µA, 2Mbps, Low-Voltage Level Translators in SC70 Power-Supply Decoupling To reduce ripple and the chance of transmitting incorrect data, decouple VCC and VL to ground with a 0.1µF capacitor as close to the device as possible. I2C Level Translation The MAX3370/MAX3371 are ideal for level translation between a low-voltage ASIC and an I2C device. The devices’ bidirectional natures allow their use in the data line of I 2C communications. A typical application is interfacing a low-voltage microprocessor to a 3V or 5V D/A converter, such as the MAX517. The I/O lines on the MAX3370/MAX3371 are bidirectional, can be level-shifted up to +5.5V, and contain internal 10kΩ pullup resistors to allow open-drain driving (see the Typical Operating Circuit). Push-Pull vs. Open-Drain Driving The MAX3370/MAX3371 I/O pins can be driven by a push-pull or open-drain device. When using a push-pull driver, the MAX3370/MAX3371 operate up to 2Mbps with a 10pF load or 1Mbps with a 50pF load. The internal pullup resistors on the I/O pins allow use with opendrain devices. The MAX3370/MAX3371 operate up to 500kbps with a 30pF load when driven by an opendrain device. Data rates higher than those listed in the Electrical Characteristics table can be achieved. The maximum data rate is limited to 3Mbps by the speed-up circuitry. Unidirectional vs. Bidirectional Level Translator The MAX3370/MAX3371 may also be used to translate unidirectional signals without signal inversion. The devices provide the smallest solution (SC70 package) for unidirectional level translation without inversion. Chip Information TRANSISTOR COUNT: 75 PROCESS: BiCMOS _______________________________________________________________________________________ 9 MAX3370/MAX3371 Applications Information 1µA, 2Mbps, Low-Voltage Level Translators in SC70 SC70, 6L.EPS SC70, 5L.EPS MAX3370/MAX3371 Package Information 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. 10 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2001 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products.