Quad 2-input Data Selector/multiplexer With 3-state Outputs High-performance Silicon-gate Cmos Korea Corp.

The KK74HC257A is identical in pinout to the LS/ALS257. The device inputs are compatible with standard CMOS outputs; with pullup resistors, they are compatible with LS/ALSTTL outputs. This device selects a (4-bit) nibble from either the A or B inputs as determined by the Select input. The nibble is presented at the outputs in noninverted from when the Output Enable pin is at a low level. A high level on the Output Enable pin switches the outputs into the high- impedance state. Outputs Directly Interface to CMOS, NMOS, and TTL Operating Voltage Range: 2.0 to 6.0 V Low Input Current: 1.0 A High Noise Immunity Characteristic of CMOS Devices By Kodenshi Korea Corp.
KK74HC257A 's PackagesKK74HC257A 's pdf datasheet

KK74HC257A Pinout, Pinouts
KK74HC257A pinout,Pin out
This is one package pinout of KK74HC257A,If you need more pinouts please download KK74HC257A's pdf datasheet.

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