SN74LS123D

The SN74LS123D from Texas Instruments is a dual retriggerable monostable multivibrator IC designed for various timing applications. This component belongs to the LS technology family and offers a standard speed with a propagation delay of 28 ns.

Key electrical characteristics include an operating voltage range of 4.75V to 5.25V and a supply current of 20000µA. It provides an output current capability of 8mA at IOL (max) and -0.4mA at IOH (max). The device features two independent circuits and is DC triggered from active-high or active-low gated logic inputs. It is retriggerable for very long output pulses, capable of up to 100% duty cycle, with an overriding clear to terminate the output pulse.

Packaged in a 16-SOIC surface mount configuration, the SN74LS123D operates within a temperature range of 0°C to 70°C. Its design allows for output pulse-duration control through external resistance and capacitance values, with internal timing resistors available for simplified use with only an external capacitor. The Schmitt hysteresis on the trigger inputs ensures jitter-free triggering.

This multivibrator is suitable for applications requiring precise pulse generation and timing control. Its robust design and standard package make it a versatile component for digital logic circuits.