74HC_HCT4538

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Product data sheet

Rev. 4 — 24 February 2016

13 of 24

NXP Semiconductors

74HC4538; 74HCT4538

Dual retriggerable precision monostable multivibrator

Measurement points are given in Table 8.

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

Fig 8.

Waveforms showing nA, nB, nQ, nQ pulse widths, recovery and retrigger times

Table 8.

Measurement points

Type

Input

Output

VM

VM

VX

VY

74HC4538

0.5VCC

0.5VCC

0.1VCC

0.9VCC

74HCT4538

1.3 V1.3 V0.1VCC

0.9VCC