74LVC257ADB 查看數據表（PDF） - NXP Semiconductors.

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74LVC257ADB

Quad 2-input multiplexer with 5 V tolerant inputs/outputs; 3-state

NXP Semiconductors. 

Nexperia

74LVC257A

Quad 2-input multiplexer with 5V tolerant; 3-state

VI

OE input

GND

VCC

output

LOW- to - OFF

OFF- to - LOW

VOL

VOH

output

HIGH - to - OFF

OFF- to - HIGH

GND

VM

t PLZ

t PZL

t PHZ

VX

VY

output

enabled

VM

t PZH

output

disabled

VM

output

enabled

mna870

Fig 8.

VM = 1.5 V at VCC  2.7 V.

VM = 0.5  VCC at VCC < 2.7 V.

VOL and VOH are typical output voltage levels that occur with the output load.

VX = VOL + 0.3 V at VCC  2.7 V;

VX = VOL + 0.15 V at VCC  2.7 V;

VY = VOH  0.3 V at VCC  2.7 V;

VY = VOH  0.15 V at VCC  2.7 V.

3-state enable and disable times

74LVC257A

Product data sheet

All information provided in this document is subject to legal disclaimers.

Rev. 6 — 28 November 2011

© Nexperia B.V. 2017. All rights reserved

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