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 common select (S) and enable (OE)bar inputs. When (OE)bar 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 compatible with TTL levels. This device CAN be used as a level converter for interfacing 3.3 V to 5.0 V because it has full 5 V CMOS level output swings. The VHCT257A input structures provide protection when voltages between 0 V and 5.5 V are applied, regardless of the supply voltage. The output structures also provide protection when VCC = 0 V. These input and output structures help prevent device destruction caused by supply voltage input/output voltage mismatch, battery backup, hot insertion, etc. The internal circuit is composed of three stages, including a Buffer output which provides high noise immunity and stable output. The inputs tolerate voltages up to 7 V, allowing the Interface of 5 V systems to 3 V systems.
By ON Semiconductor
MC74VHCT257A 's PackagesMC74VHCT257A 's pdf datasheet
MC74VHCT257ADG SOIC
MC74VHCT257ADR2G SOIC
MC74VHCT257ADT TSSOP
MC74VHCT257ADTG TSSOP
MC74VHCT257ADTR2 TSSOP
MC74VHCT257AM
MC74VHCT257AMG
MC74VHCT257AD SOIC
MC74VHCT257ADR2 SOIC




MC74VHCT257A Pinout, Pinouts
MC74VHCT257A pinout,Pin out
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