SIM Card Controller

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 w • Supports 1.8V or 3.0V Operating SIM Card\r\n• The LDO is able to Supply More than 50mA under 1.8V & 3.0V\r\n• Built−in Pullup Resistor for I/O Pin in Both Directions\r\n• All Pins are Fully ESD Protected According to ISO−7816 Specifications – ESD Protection on SIM Pins in Excess of 7 kV (Human Bod;

DUAL BINARY TO 1 OF 4 DECODER/DEMULTIPLEXERS

DESCRIPTION The HCC4555B, HCC4556B (extended temperature range) and the HCF4555B, HCF4556B (intermediate temperature range) are monolithic integrated circuits available in 16-lead dual in-line plastic or ceramic package and plastic micropackage. The HCC/HCF4555B and HCC/HCF4556B are dual one-of-

DUAL BINARY TO 1 OF 4 DECODER/DEMULTIPLEXERS

DESCRIPTION The HCC4555B, HCC4556B (extended temperature range) and the HCF4555B, HCF4556B (intermediate temperature range) are monolithic integrated circuits available in 16-lead dual in-line plastic or ceramic package and plastic micropackage. The HCC/HCF4555B and HCC/HCF4556B are dual one-of-

Dual 1-of-4 decoder/demultiplexer

DESCRIPTION The HEF4555B is a dual 1-of-4 decoder/demultiplexer. Each has two address inputs (A0 and A1), an active LOW enable input (E) and four mutually exclusive outputs which are active HIGH (O0 to O3). When used as a decoder, E when HIGH, forces O0 to O3 LOW. When used as a demultiplexer, th

Dual 1-of-4 decoder/demultiplexer

DESCRIPTION The HEF4555B is a dual 1-of-4 decoder/demultiplexer. Each has two address inputs (A0 and A1), an active LOW enable input (E) and four mutually exclusive outputs which are active HIGH (O0 to O3). When used as a decoder, E when HIGH, forces O0 to O3 LOW. When used as a demultiplexer, th

Dual 1-of-4 decoder/demultiplexer

DESCRIPTION The HEF4555B is a dual 1-of-4 decoder/demultiplexer. Each has two address inputs (A0 and A1), an active LOW enable input (E) and four mutually exclusive outputs which are active HIGH (O0 to O3). When used as a decoder, E when HIGH, forces O0 to O3 LOW. When used as a demultiplexer, th