MAX1840 - Maxim

MAX1840 Low-Voltage SIM/Smart Card Level Translators

The MAX1840/MAX1841 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.

Features

MAX1840/MAX1841 Applications SIM Interface in GSM Cellular Telephones Smart Card Readers Logic Level Translation SPI™/QSPI™/MICROWIRE™ Level Translation PART MAX1840EUB MAX1841EUB Ordering Information TEMP. RANGE -40°C to +85°C -40°C to +85°C PIN-PACKAGE 10 µMAX 10 µMAX Typical Operating Circuit DVCC DVCC DVCC RIN SYSTEM CONTROLLER VCC RST VCC VCC RST SIM OR SMART CARD Pin Configuration TOP VIEW DATA DVCC CIN RIN SHDN (DDRV) 1 2 3 4 5 10 IO 9 VCC CLK RST GND MAX1840 MAX1841 CIN DATA OPTIONAL OPTIONAL SHDN
* DDRV
* IO GND IO CLK CLK MAX1840 MAX1841 8 7 6 µMAX ( ) ARE FOR MAX1841. GND G.