74HC251 查看數據表（PDF） - NXP Semiconductors.

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74HC251

8-input multiplexer; 3-state

NXP Semiconductors. 

Nexperia

11. Waveforms

74HC251; 74HCT251

8-input multiplexer; 3-state

9,

,QLQSXW

*1'

92+

<RXWSXW

92/

92+

<RXWSXW

92/

90

W3+/



90



W7+/

W3/+





90

W7/+

90

90



W3/+





W7/+

W3+/

90



W7+/

DDD

Fig 6.

Measurement points are given in Table 8.

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

Propagation delay input (In) to output (Y, Y) and the output (Y, Y) transition time

9,

6Q2(LQSXW

*1'

92+

<RXWSXW

92/

92+

<RXWSXW

92/

90

W3+/



90



W7+/

W3/+





90

W7/+

90

90



W3/+





W7/+

W3+/

90



W7+/

DDD

Fig 7.

Measurement points are given in Table 8.

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

Propagation delay input (Sn, OE) to output (Y, Y)

74HC_HCT251

Product data sheet

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

Rev. 4 — 1 February 2016

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