ET4555 Overview
The ET4555 is a level shifter analog circuit designed to translate the voltages between a SIM Card and an external microcontroller or MPU. A built−in LDO−type DC−DC converter makes the ET4555 useable to drive 1.8 V & 3.0V SIM card. The device fulfills the ISO7816−3 smart card interface standard as well as GSM 11.11 and related (11.12 and 11.18) and 3G mobile requirements (IMT−2000/3G TS 31.101).
ET4555 Key Features
- ESD Protection on SIM Pins in Excess of 7 kV (Human Body Model) Supports up to More than 5 MHz Clock Package：QFN-16（ET45