TXS4558
Overview
The TXS4558 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. It is a custom device which is used to extend a single SIM/UICC interface to be able to support two SIM’s/UICC’s.
- Level Translator - VCC Range of 1.65 V to 3.3 V - VBATT Range of 2.3V to 5.5V
- Low-Dropout (LDO) Regulator - 50-mA LDO Regulator With Enable - 1.8-V or 2.95-V Selectable Output Voltage - Very Low Dropout: 100 mV (Max) at 50 mA
- Control and Communication Through GPIO Interface with Baseband Processor
- Isolated Clock Stop Mode for both SIM1 and SIM2 cards
- ESD Protection Exceeds JESD 22 - 2000-V Human-Body Model (A114-B) - 500-V Charged-Device Model (C101) - 8kV HBM for SIM pins
- Package - 20-Pin QFN (3 mm x 3 mm)
