Hitachi HD74HC123A
The HD74HC123A can be triggered on the positive transition of the clear while A is held low and B is held high. The HD74HC123A is retriggerable. The output pulse equation is simply: t w = (Rext) (Cext).| Part No. | HD74HC123A |
|---|---|
| Datasheet | HD74HC123A Download |
| Manufacturer |  Hitachi |
| Description | Dual Retriggerable Monostable Multivibrators |
| Buy | Stock & Price |
DESCRIPTION
This multivibrator features both a negative, A, and a positive, B, transition triggered input, either of which can be used as an inhibit input. Also included is a clear input that when taken low resets the one shot. The HD74HC123A is retriggerable. That is it may be triggered repeatedly while their outputs are generating a pulse and the pulse will be extended. Pulse width stability over a wide range of temperature.FEATURES
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● High Speed Operation High Output Current: Fanout of 10 LSTTL Loads Wide Operating Voltage: VCC = 2 to 6 V Low Input Current: 1 µA max Low Quiescent Supply Current Function Table Inputs Clear L X X H H L A X H X L H H B X X L Outputs Q L L L Q H H H Note: External timing capacitance connects between Cext and Rext/Cext. HD74HC123A Pin Arrangement 1A 1B 1CLR 1Q 2Q 2Cext 2Rext/ Cext GND 1 2 3 4 5 6 7 8 (Top view) Q Q CLR CLR Q 16 VCC 15 1Rext Cext Q 14 1Cext 13 1Q 12 2Q 11 2CLR 10 2B 9 2A 2 HD74HC123A DC Characteristics SymItem Input voltage bol VI...
