Quad 2-input Multiplexer; 3-state

The 74AHC257 74AHCT257 are high-speed Si-gate CMOS devices and are pin compatible with Low power Schottky TTL (LSTTL). They are specified in compliance with JEDEC standard No. 7A. The 74AHC257 74AHCT257 has four identical 2-input multiplexers with 3-state outputs, which select 4 bits of data from two sources and are controlled by a common data select input (S). The data inputs from source 0 (1I0 to 4I0) are selected when input S is LOW and the data inputs from source 1 (1I1 to 4I1) are selected when S is HIGH. Data appears at the outputs (1Y to 4Y) in true (non-inverting) form from the selected inputs. By NXP Semiconductors
74AHC257 's Packages74AHC257 's pdf datasheet

74AHC257 Pinout, Pinouts
74AHC257 pinout,Pin out
This is one package pinout of 74AHC257,If you need more pinouts please download 74AHC257's pdf datasheet.

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