74LVC2244A 查看數據表（PDF） - NXP Semiconductors.

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74LVC2244A

Octal buffer/line driver; 30  series termination; 5 V tolerant input/output; 3-state

NXP Semiconductors. 

Nexperia

11. Waveforms

74LVC2244A

Octal buffer/line driver; 30  series termination; 3-state

VI

nAn input

VM

GND

VOH

tPLH

VM

tPHL

nYn output

VM

VOL

VM

mna171

Fig 5.

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.

The input (nAn) to output (nYn) propagation delays

VI

nOE input

GND

VCC

output

LOW-to-OFF

OFF-to-LOW

VOL

VOH

output

HIGH-to-OFF

OFF-to-HIGH

GND

VM

tPLZ

tPZL

tPHZ

VX

VY

VM

tPZH

VM

outputs

enabled

outputs

disabled

outputs

enabled

mna362

Fig 6.

VM = 1.5 V at VCC  2.7 V.

VM = 0.5  VCC at VCC < 2.7 V.

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.

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

3-state enable and disable times

74LVC2244A

Product data sheet

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

Rev. 5 — 3 November 2011

© Nexperia B.V. 2017. All rights reserved

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