ET4555 mpu equivalent, level shifter analog circuit designed to translate the voltages between a sim card and an external microcontroller or mpu.
Supports 1.8V or 3.0V Operating SIM Card The LDO is able to Supply More than 50mA under 1.8V & 3.0V Built−in Pullup Resistor for I/O Pin in Both Directions All Pins are F.
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 fulfill.
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