IN74AC257 Description
TECHNICAL DATA IN74AC257 Quad 2-Input Data Selector/Multiplexer with 3-State Outputs High-Speed Silicon-Gate CMOS The IN74AC257 is identical in pinout to the LS/ALS257, HC/HCT257. The device inputs are patible with standard CMOS outputs; with pullup resistors, they are patible with LS/ALS outputs.