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MAX1741

Maxim
Part Number MAX1741
Manufacturer Maxim
Description SIM/Smart Card Level Translators
Published May 6, 2005
Detailed Description 19-1458; Rev 0; 1/00 SIM/Smart Card Level Translators in µMAX General Description The MAX1740/MAX1741 subscriber identi...
Datasheet PDF File MAX1741 PDF File

MAX1741
MAX1741

Overview
19-1458; Rev 0; 1/00 SIM/Smart Card Level Translators in µMAX General Description The MAX1740/MAX1741 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 ±10kV ESD protection on all card contacts.
The MAX1740 includes a SHDN control input to aid insertion and removal of SIM and smart cards, while the MAX1741 includes a system-side data driver to support system controllers without open-drain outputs.
The logic supply voltage range is +1.
425V to +5.
5V for the “controller side” and +2.
25V to +5.
5V for the “card side.
” Total supply current is 2.
5µA max.
Both devices automatically shut down when either power supply is removed.
For a complete SIM-card interface, combine the MAX1740/MAX1741 with the MAX1686H 0V/3V/5V regulated charge pump.
The MAX1740/MAX1741 are available in ultra-small 10pin µMAX packages that are only 1.
09mm high and half the area of an 8-pin SO.
The MAX1740/MAX1741 are compliant with GSM test specifications 11.
11 and 11.
12.
o SIM/Smart Card Level Shifting o ±10kV ESD Card Socket Protection o Allows Level Translation with DVCC ≥ VCC or DVCC ≤ VCC o Automatically Shuts Down When Either Supply Is Removed o Card Contacts Actively Pulled Low During Shutdown o +1.
425V to +5.
5V Controller Voltage Range o +2.
25V to +5.
5V Card Voltage Range o 2.
5µA (max) Total Quiescent Supply Current o 0.
01µA Total Shutdown Supply Current o Ultra-Small 10-Pin µMAX Package o Compliant with GSM Test Specifications 11.
11 and 11.
12 Features MAX1740/MAX1741 Applications SIM Interface in GSM Cellular Telephones Smart Card Readers Logic Level Translation SPI™/QSPI™/MICROWIRE™ Level Translation PART MAX1740EUB MAX1741EUB Ordering Information TEMP.
RANGE -40°C to +85°C -40°C to +85°C PIN-PACKAGE 10 µMAX 10 µMAX Typical Oper...


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