74HC20(2018) 查看數據表（PDF） - NXP Semiconductors.

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74HC20
(Rev.:2018)

Dual 4-input NAND gate

NXP Semiconductors. 

Nexperia

11. Waveforms

74HC20; 74HCT20

Dual 4-input NAND gate

9,

Q$Q%Q&

Q'LQSXW

*1'

92+

Q<RXWSXW

92/

90

W3+/

9<

90

9;

W7+/

W3/+

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.

Waveforms showing the input (nA, nB, nC, nD) to output (nY) propagation delays and the output

transition times

Table 8. Measurement points

Type

Input

74HC20

74HCT20

VM

0.5VCC

1.3 V

Output

VM

0.5VCC

1.3 V

VX

0.1VCC

0.1VCC

VY

0.9VCC

0.9VCC

74HC_HCT20

Product data sheet

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

Rev. 4 — 18 November 2015

© Nexperia B.V. 2017. All rights reserved

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