74HC_HCT251_15 datasheet(11/20 Pages) PHILIPS

部品番号	74HC_HCT251

部品情報	8-input multiplexer; 3-state

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74HC_HCT251

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Product data sheet

Rev. 3 — 9 July 2013

11 of 20

NXP Semiconductors

74HC251; 74HCT251

8-input multiplexer; 3-state

Measurement points are given in Table 8.

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

Fig 9.

Enable and disable times

001aae307

tPLZ

tPHZ

outputs

disabled

outputs

enabled

90%

10%

outputs

enabled

output

LOW-to-OFF

OFF-to-LOW

output

HIGH-to-OFF

OFF-to-HIGH

OE input

VI

VOL

VOH

VCC

VM

GND

tPZL

tPZH

VM

Table 8.

Measurement points

Type

Input

Output

VM

74HC251

0.5VCC

74HCT251

1.3 V

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同様の説明 - 74HC_HCT251_15

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