74LV123N(2007) 查看數據表（PDF） - NXP Semiconductors.

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74LV123N
(Rev.:2007)

Dual retriggerable monostable multivibrator with reset

NXP Semiconductors. 

NXP Semiconductors

74LV123

Dual retriggerable monostable multivibrator with reset

6. Functional description

Table 3. Function table[1]

Input

nRD

nA

nB

L

X

X

X

H

X

X

X

L

H

L

↑

H

↓

H

↑

L

H

Output

nQ

nQ

L

H

L[2]

H[2]

L[2]

H[2]

[1] H = HIGH voltage level;

L = LOW voltage level;

X = don’t care;

↑ = LOW-to-HIGH transition;

↓ = HIGH-to-LOW transition;

= one HIGH level output pulse

= one LOW level output pulse

[2] If the monostable multivibrator was triggered before this condition was established, the pulse will continue as programmed.

74LV123_5

Product data sheet

Rev. 05 — 8 November 2007

© NXP B.V. 2007. All rights reserved.

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