Datasheet Summary
Quad 2-Channel Multiplexer with 3-State Outputs
The MC74VHCT257A is an advanced high speed CMOS quad 2- channel multiplexer fabricated with silicon gate CMOS technology. It achieves high speed operation similar to equivalent Bipolar Schottky TTL while maintaining CMOS low power dissipation.
It consists of four 2- input digital multiplexers with mon select (S) and enable (OE) inputs. When (OE) is held High, selection of data is inhibited and all the outputs go Low.
The select decoding determines whether the A or B inputs get routed to the corresponding Y outputs.
The VHCT inputs are patible with TTL levels. This device can be used as a level converter for interfacing 3.3 V...