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SN74LV123A-Q1

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SCLS467F – FEBRUARY 2003 – REVISED JUNE 2016

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Feature Description (continued)

8.3.1 Power-Down Considerations

amount of energy stored in the capacitor. When a system containing this device is powered down, the capacitor

(5 V) × (15 pF) / 30 mA = 2.5 ns. Usually, this is not a problem because power supplies are heavily filtered and

cannot discharge at this rate. The SN74LV123A-Q1 devices can sustain damage when a more rapid decrease of

8.4 Device Functional Modes

Table 1 shows the functional modes for each monostable multivibrator in the SN74LV123A-Q1.

(1)

These outputs are based on the assumption that the indicated steady-state conditions at the A and B

inputs have been set up long enough to complete any pulse started before the setup.

Table 1. Function Table

(Each Multivibrator)

INPUTS

OUTPUTS

CLR

A

B

Q

Q

L

X

X

L

H

X

H

X

X

X

L

H

L

↑

H

↓

H

↑

L

H