74HC243N datasheet(10/17 Pages) PHILIPS

部件名	74HC243N

功能描述	Quad bus transceiver; 3-state

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制造商	PHILIPS [NXP Semiconductors]

网页	http://www.nxp.com

标志

10 / 17 page

9397 750 13808

Product data sheet

Rev. 03 — 12 November 2004

10 of 17

Philips Semiconductors

74HC243

Quad bus transceiver; 3-state

12. Waveforms

VM = 0.5 × VI.

Fig 5.

Waveforms showing the input (An and Bn) to output (Bn and An) propagation

delays and the output transition times

VM = 0.5 × VI.

Fig 6.

Waveforms showing the 3-state enable and disable times for input OEA

001aab955

An, Bn

input

Bn, An

output

VM

tPHL

tTHL

tTLH

tPLH

VM

OEA input

output

LOW to OFF

OFF to LOW

output

HIGH to OFF

OFF to HIGH

VM

001aab959

tf

tr

90 %

10 %

tPLZ

VM

tPZL

tPHZ

tPZH

10 %

90 %

outputs

disabled

outputs

enabled

outputs

enabled

类似零件编号 - 74HC243N

制造商	部件名	数据表	功能描述
NXP Semiconductors	74HC243	49Kb / 8P	Quad bus transceiver; 3-state December 1990

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