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| 19-1847; Rev 1; 2/01 1A, 2Mbps, Low-Voltage Level Translators in SC70 General Description 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 <1A 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. o Miniature SC70 Packages o Operational Down to 1.6V o Low Quiescent Current (<100A) o Ultra-Low (<1A) Shutdown Supply Current (MAX3371) o Three-State Outputs in Shutdown (MAX3371) o 2Mbps (10pF Load) Push-Pull Driving o 1Mbps (50pF Load) Push-Pull Driving o 500kbps (30pF Load) Open-Drain Driving Features o Allow Bidirectional Level Translation MAX3370/MAX3371 ________________________Applications Cell Phone Cradles Cell Phone Hands-Free Kits Portable POS Systems Portable Communication Devices Smart Card Readers SPITM, MICROWIRETM, and I2CTM Level Translation Low-Voltage ASIC Level Translation RS-232-Compatible Translation I2C is a trademark of Philips Corp. SPI is a trademark of Motorola, Inc. MICROWIRE is a trademark of National Semiconductor Corp. VL 1 Ordering Information TEMP. RANGE MAX3370EXK-T -40C to +85C MAX3371EXT-T -40C to +85C PART PINTOP SHDN PACKAGE MARK 5 SC70-5 NO ABV 6 SC70-6 YES AAO Pin Configurations TOP VIEW 5 VCC Typical Operating Circuit +1.8V VL SHDN * MAX3370 MAX3371 GND 2 MAX3370 I/O VL 3 +3.3V VCC 3.3V SYSTEM 4 I/O VCC SC70-5 1.8V SYSTEM CONTROLLER VL 1 DATA 6 VCC DATA GND I/O VL I/O VCC GND GND 2 GND MAX3371 5 SHDN *MAX3371 ONLY I/O VL 3 4 I/O VCC 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. 1A, 2Mbps, Low-Voltage Level Translators in SC70 MAX3370/MAX3371 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 = +70C) 5/6-Pin SC70 (derate 3.1mW/C above +70C) ...........245mW Operating Temperature Range ...........................-40C to +85C Storage Temperature Range .............................-65C to +150C Lead Temperature (soldering, 10s) .................................+300C 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 = -40C to +85C, unless otherwise noted. Typical values are at TA = +25C.) (Note 2) PARAMETER POWER SUPPLIES VL Supply Range VCC Supply Range Supply Current from VCC Supply Current from VL VCC Shutdown Supply Current VL Shutdown Supply Current Three-State Output Leakage Current LOGIC LEVEL THRESHOLDS I/O VL Input Voltage High Threshold I/O VL Input Voltage Low Threshold I/O VCC Input Voltage High Threshold I/O VCC Input Voltage Low Threshold I/O VL Output Voltage High I/O VL Output Voltage Low I/O VCC Output Voltage High I/O VCC Output Voltage Low SHDN Input Voltage High SHDN Input Voltage Low VIHL VILL VIHC VILC VOHL VOLL VOHC VOLC VIH-SHDN VIL-SHDN VL +1.8V VL +1.6V I/O VL sink current = 20A, I/O VCC VCC - 0.4V (Note 3) I/O VL sink current = 1mA, I/O VCC 0.2V (Note 3) I/O VCC source current = 20A, I/O VL VL - 0.2V (Note 3) I/O VCC sink current = 1mA, I/O VL 0.15V (Note 3) 2/3 x VL 0.4 0.2 2/3 x VCC 0.4 0.2 2/3 x VL 0.4 0.15 VCC - 0.4 VL - 0.2 V V V V V V V V V V VL VCC IQVCC IQVL SHDN = GND, TA = +25C, MAX3371 SHDN = GND, TA = +25C, MAX3371 I/O VL, I/O VCC; SHDN = GND, TA = +25C, MAX3371 (Note 1) 1.6 2.5 70 5 0.03 0.03 0.02 5.5 5.5 100 100 1 1 1 V V A A A A A SYMBOL CONDITIONS MIN TYP MAX UNITS 2 _______________________________________________________________________________________ 1A, 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 = -40C to +85C, unless otherwise noted. Typical values are at TA = +25C.) (Note 2) PARAMETER SYMBOL CONDITIONS CLOAD = 10pF, data rate = 2Mbps (Note 5) I/O VCC Rise Time (Note 4) tRVCC CLOAD = 50pF, data rate = 1Mbps CLOAD = 30pF, data rate = 500kbps, open-drain drive CLOAD = 10pF, data rate = 2Mbps (Note 5) I/O VCC Fall Time (Note 4) tFVCC CLOAD = 50pF, data rate = 1Mbps CLOAD = 30pF, data rate = 500kbps, open-drain drive CLOAD = 10pF, data rate = 2Mbps (Note 5) I/O VL Rise Time (Note 4) tRVL CLOAD = 50pF, data rate = 1Mbps CLOAD = 30pF, data rate = 500kbps, open-drain drive CLOAD = 10pF, data rate = 2Mbps (Note 5) I/O VL Fall Time (Note 4) tFVL CLOAD = 50pF, data rate = 1Mbps CLOAD = 30pF, data rate = 500kbps, open-drain drive CLOAD = 10pF, data rate = 2Mbps (Note 5) HIGH-to-LOW Transition Propagation Delay (Driving I/O VL) tPD-VCC-HL CLOAD = 50pF, data rate = 1Mbps CLOAD = 30pF, data rate = 500kbps, open-drain drive CLOAD = 10pF, data rate = 2Mbps (Note 5) LOW-to-HIGH Transition Propagation Delay (Driving I/O VL) tPD-VCC-LH CLOAD = 50pF, data rate = 1Mbps CLOAD = 30pF, data rate = 500kbps, open-drain drive CLOAD = 10pF, data rate = 2Mbps (Note 5) HIGH-to-LOW Transition Propagation Delay (Driving I/O VCC) tPD-VL-HL CLOAD = 50pF, data rate = 1Mbps CLOAD = 30pF, data rate = 500kbps, open-drain drive CLOAD = 10pF, data rate = 2Mbps (Note 5) LOW-to-HIGH Transition Propagation Delay (Driving I/O VCC) tPD-VL-LH CLOAD = 50pF, data rate = 1Mbps CLOAD = 30pF, data rate = 500kbps, open-drain drive CLOAD = 10pF, data rate = 2Mbps (Note 3) CLOAD = 50pF, data rate = 1Mbps CLOAD = 30pF, data rate = 500kbps, open-drain drive 2 4 5 ns MIN TYP MAX 100 200 400 50 200 400 100 200 400 50 200 400 50 200 400 200 400 800 50 200 400 200 400 800 ns ns ns ns ns ns ns ns UNITS MAX3370/MAX3371 TIMING CHARACTERISTICS (RLOAD = 1M, VCC = +2.5V, VL = +1.6V, I/O test signal Rail-to-Rail(R) unless otherwise noted, Figure 1) (Note 3) HIGH-to-LOW Transition Propagation Delay Device-to-Device Skew (Driving I/O VL) Rail-to-Rail is a registered trademark of Nippon Motorola Ltd. _______________________________________________________________________________________ 3 1A, 2Mbps, Low-Voltage Level Translators in SC70 MAX3370/MAX3371 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 = -40C to +85C, unless otherwise noted. Typical values are at TA = +25C.) (Note 2) PARAMETER LOW-to-HIGH Transition Propagation Delay Device-to-Device Skew (Driving I/O VL) SYMBOL CONDITIONS CLOAD = 10pF, data rate = 2Mbps (Note 3) CLOAD = 50pF, data rate = 1Mbps CLOAD = 30pF, data rate = 500kbps, open-drain drive CLOAD = 10pF, data rate = 2Mbps (Note 3) CLOAD = 50pF, data rate = 1Mbps CLOAD = 30pF, data rate = 500kbps, open-drain drive CLOAD = 10pF, data rate = 2Mbps (Note 3) CLOAD = 50pF, data rate = 1Mbps CLOAD = 30pF, data rate = 500kbps, open-drain drive CLOAD = 10pF (Note 5) Maximum Data Rate CLOAD = 50pF CLOAD = 30pF, open-drain drive 2 1 0.5 MIN TYP 5 8 80 2 4 5 7 8 50 3 2 1 Mbps ns ns ns MAX UNITS 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) Note 1: VL must always be less than or equal to VCC. Note 2: All units are 100% production tested at TA = +25C. 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 _______________________________________________________________________________________ 1A, 2Mbps, Low-Voltage Level Translators in SC70 MAX3370/MAX3371 +1.6V +1.6V VL VCC DATA DATA CLOAD RLOAD CLOAD I/O VCC tRISE, tFALL 10ns tPD-VL-LH tPD-VCC-LH tPD-VCC-HL tPD-VL-HL +2.5V VL VCC +2.5V MAX3370 MAX3371 MAX3370 MAX3371 I/O VL I/O VCC GND I/O VL I/O VCC GND RLOAD I/O VL tRISE, tFALL 10ns I/O VL I/O VCC tRVCC tFVCC tRVL tFVL Figure 1a. Rail-to-Rail Driving I/O VL Figure 1b. Rail-to-Rail Driving I/O VCC +1.6V VL VCC +2.5V +1.6V VL VCC +2.5V MAX3370 MAX3371 I/O VL I/O VCC GND DATA RLOAD CLOAD CLOAD DATA RLOAD MAX3370 MAX3371 I/O VL I/O VCC GND I/O VL tRISE, tFALL 10ns tPD-VCC-LH tPD-VCC-HL I/O VCC tRISE, tFALL 10ns tPD-VL-LH tPD-VL-HL I/O VCC tRVCC tFVCC I/O VL tRVL tFVL Figure 1c. Open-Drain Driving I/O VL Figure 1d. Open-Drain Driving I/O VCC _______________________________________________________________________________________ 5 1A, 2Mbps, Low-Voltage Level Translators in SC70 MAX3370/MAX3371 Typical Operating Characteristics (Driving I/O VL rail-to-rail, RL = 1M, TA = +25C, unless otherwise noted.) VL SUPPLY CURRENT vs. POWER-SUPPLY VOLTAGE 100 98 IVL (A) VCC SUPPLY CURRENT vs. POWER-SUPPLY VOLTAGE MAX3370-01 RATE = 500kbps, CLOAD = 30pF, OPEN-DRAIN DRIVE VL = 1.8V RATE = 2Mbps, CLOAD = 10pF VL = 1.8V RATE = 1Mbps, CLOAD = 50pF 500 400 IVCC (A) 300 200 100 RATE = 2Mbps, CLOAD = 10pF RATE = 500kbps, CLOAD = 30pF, OPEN-DRAIN DRIVE 2.5 3.0 3.5 4.0 VCC (V) 4.5 5.0 96 94 92 90 88 86 2.5 3.0 3.5 4.0 VCC (V) 4.5 5.0 5.5 RATE = 1Mbps, CLOAD = 50pF 0 5.5 VL SUPPLY CURRENT vs. TEMPERATURE MAX3370-03 VCC SUPPLY CURRENT vs. TEMPERATURE MAX3370-04 99 98 97 96 IVL (A) 95 94 93 92 91 90 89 -40 -15 10 35 60 VL = 1.8V, RATE = 500kbps, CLOAD = 30pF, OPEN-DRAIN DRIVE VCC = 5.0V VCC = 2.5V 450 400 350 VCC = 5.0V VL = 1.8V, RATE = 500kbps, CLOAD = 30pF, OPEN-DRAIN DRIVE VCC = 3.3V VCC = 3.3V IVCC (A) 300 250 200 150 VCC = 2.5V 100 85 -40 -15 10 35 60 85 TEMPERATURE (C) TEMPERATURE (C) VL SUPPLY CURRENT vs. LOAD CAPACITANCE MAX3370-05 VCC SUPPLY CURRENT vs. LOAD CAPACITANCE VL = 1.8V VCC = 3.3V RATE = 2Mbps, CLOAD = 10pF RATE = 1Mbps, CLOAD = 50pF MAX3370-06 115 110 105 VL = 1.8V VCC = 3.3V 780 680 580 IVCC (A) 480 380 280 180 80 0 50 100 CLOAD (pF) 150 RATE = 500kbps, CLOAD = 30pF, OPEN-DRAIN DRIVE IVL (A) 100 95 90 85 80 0 50 RATE = 500kbps, CLOAD = 30pF, OPEN-DRAIN DRIVE RATE = 2Mbps, CLOAD = 10pF RATE = 1Mbps, CLOAD = 50pF 100 CLOAD (pF) 150 200 200 6 _______________________________________________________________________________________ MAX3370-02 102 600 1A, 2Mbps, Low-Voltage Level Translators in SC70 MAX3370/MAX3371 Typical Operating Characteristics (continued) (Driving I/O VL rail-to-rail, RL = 1M, TA = +25C, unless otherwise noted.) PROPAGATION DELAY vs. LOAD CAPACITANCE (DRIVING I/O VL) MAX3370-07 PROPAGATION DELAY vs. LOAD CAPACITANCE (DRIVING I/O VCC) 30 PROPAGATION DELAY (ns) 25 20 15 10 5 0 LOW-TO-HIGH TRANSITION 0 HIGH-TO-LOW TRANSITION 0 1V/div VL = 1.8V VCC = 3.3V MAX3370-08 RAIL-TO-RAIL DRIVING (RATE = 2Mbps, CLOAD = 10pF, VCC = 3.3V, VL = 1.8V) MAX3370-09 50 45 PROPAGATION DELAY (ns) 40 35 30 25 20 15 10 5 0 0 VL = 1.8V VCC = 3.3V LOW-TO-HIGH TRANSITION 35 I/O VL HIGH-TO-LOW TRANSITION I/O VCC 50 100 CLOAD (pF) 150 200 0 50 100 CLOAD (pF) 150 200 100ns/div RAIL-TO-RAIL DRIVING (RATE = 1Mbps, CLOAD = 50pF, VCC = 3.3V, VL = 1.8V) MAX3370-10 OPEN-DRAIN DRIVING (RATE = 500kbps, CLOAD = 30pF, VCC = 3.3V, VL = 1.8V) MAX3370-11 I/O VL 0 1V/div 0 1V/div I/O VL I/O VCC 0 200ns/div 0 400ns/div I/O VCC OPEN-DRAIN DRIVING (RATE = 500kbps, CLOAD = 30pF, VCC = 5V, VL = 2.5V) MAX3370-12 MAX3371 EXITING SHUTDOWN MAX3370-13 I/O VCC I/O VL 0 2V/div I/O VCC 0 2V/div 0 I/O VL VSHDN 0 0 400ns/div 100ns/div _______________________________________________________________________________________ 7 1A, 2Mbps, Low-Voltage Level Translators in SC70 MAX3370/MAX3371 Pin Description PIN NAME MAX3370 1 2 3 4 5 -- MAX3371 1 2 3 4 6 5 VL GND I/O VL I/O VCC VCC SHDN Logic Supply Voltage Ground Input/Output Referred to VL 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. FUNCTION 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 1A. 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. VL Functional Diagram VCC 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 10k 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. V CC and I/O V L . As a result, the supply current decreases to <1A, 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. 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 10k pullup resistors on I/O 8 _______________________________________________________________________________________ 1A, 2Mbps, Low-Voltage Level Translators in SC70 Applications Information Power-Supply Decoupling To reduce ripple and the chance of transmitting incorrect data, decouple VCC and VL to ground with a 0.1F capacitor as close to the device as possible. 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. MAX3370/MAX3371 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 10k pullup resistors to allow open-drain driving (see the Typical Operating Circuit). Chip Information TRANSISTOR COUNT: 75 PROCESS: BiCMOS _______________________________________________________________________________________ 9 1A, 2Mbps, Low-Voltage Level Translators in SC70 MAX3370/MAX3371 Package Information SC70, 5L.EPS 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 (c) 2001 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products. SC70, 6L.EPS |
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