The MAX1840EUB+ is a low voltage subscriber identity module (SIM)/smart card level translator in 10 pin μMAX package. It provides level shifting and electrostatic discharge (ESD) protection for SIM and smart card ports. This device is integrated with 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. MAX1840 includes a SHDN control input to aid insertion and removal of SIM and smart cards.
Supply voltage range is 1.7V to 5.5V
1.4V to 5.5V controller voltage range AE21
Automatically shut down when either power supply is removed
Compliant with GSM test specifications 11.11 and 11.12
Allows level translation with DVCC > VCC or DVCC < VCC
Card contacts actively pulled to low during shutdown
(EN)
