Product Overview

Product Overview
MC74VHC257: Quad 2-Channel Multiplexer with 3-State Outputs
For complete documentation, see the data sheet
Product Description
The MC74VHC257 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 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 7V, allowing the interface of 5V systems to 3V systems.
Features
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High Speed: tPD = 4.1ns (Typ) at VCC = 5V
Low Power Dissipation: ICC = 4<FONT FACE=SYMBOL>m</FONT>A (Max) at TA = 25°C
High Noise Immunity: VNIH = VNIL = 28% VCC
Power Down Protection Provided on Inputs
Balanced Propagation Delays
Designed for 2V to 5.5V Operating Range
Low Noise: VOLP = 0.8V (Max)
Pin and Function Compatible with Other Standard Logic Families
Latchup Performance Exceeds 300mA
ESD Performance: HBM > 2000V; Machine Model > 200V
For more features, see the data sheet
Part Electrical Specifications
Product
Compliance
Status
Channels
VCC Min (V)
VCC Max (V)
tpd Max (ns)
IO Max (mA)
Package Type
MC74VHC257DG
Pb-free
Active
4
2
5.5
7.9
8
SOIC-16
Active
4
2
5.5
7.9
8
SOIC-16
Active
4
2
5.5
7.9
8
TSSOP-16
Active
4
2
5.5
7.9
8
TSSOP-16
Halide free
MC74VHC257DR2G
Pb-free
Halide free
MC74VHC257DTG
Pb-free
Halide free
MC74VHC257DTR2G
Pb-free
Halide free
For more information please contact your local sales support at www.onsemi.com
Created on: 6/30/2016