SN74AHC123ADR

SN74AHC123ADR is a dual retriggerable monostable multivibrator composed of two individual, edge-triggered, retriggerable monostable circuits. Each circuit has an active-low direct-reset input (R), an active-low direct-set input (S), a trigger input (T), an output (Q) and a retrigger input (RT).

The application field of SN74AHC123ADR is multifarious. To name a few, it can be used to provide time delays and pulse-width modulation. It can also be used as an implementing latch circuits, frequency dividers, one-shot multivibrators, pulse stretchers, pulse-width modulation and timer circuits.

The working principle of SN74AHC123ADR is as follows: two independent retriggerable monostable multivibrators are activated by a positive pulse applied to the trigger input (T). The multivibrators will generate an output pulse with a width determined by the external component values. If the retrigger input (RT) is held high while the output pulse is active, the output pulse will be extended as long as the retrigger input remains in the active state. This presents an excellent way to generat a long pulse from a short trigger pulse. The edge-triggering feature of SN74AHC123ADR makes it possible for a single edge at the trigger (T) input to produce a pulse of predetermined width when reset is low.

With one active-low direct-reset input (R), the state of the multivibrator can be preset. The active-low direct set input (S) can also provide a way to function the multivibrator as a frequency divider, enabling the multivibrator to toggle between high and low at every input pulse. With the combination of the reset and set control, coupled with the edge-triggering, SN74AHC123ADR is a very versatile component with various applications.

In conclusion, SN74AHC123ADR is a robust and reliable dual retriggerable monostable multivibrator that can be applied in a wide range of solutions. It has diverse applications, such as providing time delays, pulse-width modulation and frequency division, to name a few. With its active-low direct-reset and direct-set pins, as well as its edge-triggering capability, SN74AHC123ADR is one of the most versatile components in its field.