54LS123 Datasheet PDF – Monostable Multivibrator – TI

Part Number: 54LS123

Function: Retriggerable Monostable Multivibrator

Package: 16 Pin Type

Manufacturer: Texas Instruments

Image and Pinouts:

54LS123 datasheet


The 54LS123 is Retriggerable Monostable Multivibrator.

These d-c triggered multivibrators feature output pulse-duration control by three methods. The basic pulse time is programmed by selection of external resistance and capacitance values (see typical application data). The ‘54122 and ’54LS122 have internal timing resistors that allow the circuits to be used with only an external capacitor, if so desired. Once triggered, the basic pulse duration may be extended by retriggering the gated low-level-active (A) or high-level-active (B) inputs, or be reduced by  se of the overriding clear.


1. D-C Triggered from Active-High or Active-Low Gated Logic Inputs

2. Retriggerable for Very Long Output Pulses, Up to 100% Duty Cycle

3. Overriding Clear Terminates Output Pulse

Official Homepage: https://www.ti.com/product/SN54LS123

Other data sheets are available within the file: SN54LS123J, 54123 LS123, SN54123J

54LS123 Datasheet PDF Download

54LS123 pdf


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