Texas Instruments TXS02326A SIM Multiplexer/Translator

Texas Instruments TXS02326A Dual-Supply 2:1 SIM Card Multiplexer/Translator is a complete dual-supply standby Smart Identity Module (SIM) card solution for interfacing wireless baseband processors with two individual SIM subscriber cards to store data for mobile handset applications. TXS02326A Dual-Supply 2:1 SIM Card Multiplexer/Translator is used to extend a single SIM/UICC interface to be able to support two SIMs/UICCs. This device complies with ISO/IEC Smart-Card Interface requirements as well as GSM and 3G mobile standards. TXS02326A includes a high-speed level translator capable of supporting Class-B (2.95V) and Class-C (1.8V) interfaces and two low-dropout (LDO) voltage regulators that have output voltages that are selectable between 2.95V Class-B and 1.8V Class-C interfaces. This Texas Instruments SIM card solution also offers an integrated fast-mode 400kb/s slave I²C control register interface for configuration purposes, a 32kHz clock input for internal timing generation, a shutdown input, and a comparator input detecting battery pack removal to safely power-down the two SIM cards.