NXP 74HC153D 芯片, 74HC CMOS逻辑器件
The is a 4-input dual Multiplexer features independent enable inputs nE\\ and common data select inputs S0 and S1. For each multiplexer, the select inputs select one of the four binary inputs and routes it to the multiplexer output nY. A high on E\ forces the corresponding multiplexer outputs low. Inputs include clamp diodes. This enables the use of current limiting resistors to interface inputs to voltages in excess of VCC.