The SN54LS54J is a commonly used integrated circuit (IC) component that belongs to the 54LS series of TTL logic gates. It is a dual retriggerable monostable multivibrator, also known as a one-shot pulse generator. The IC is designed to produce a timed pulse output in response to a triggering input signal.
One of the primary features of the SN54LS54J is its retriggerable capability, which allows the timing period to be extended or reset if a new trigger signal is received before the current timing period expires. This feature makes it suitable for various applications such as pulse width modulation, time delay generation, frequency division, and precision timing circuits.
The IC operates on a wide supply voltage range of 4.75V to 5.25V and provides Schmitt-trigger inputs, ensuring adequate noise immunity when dealing with weak or degraded input signals. It has two independent multivibrator circuits within a single package, allowing for two separate timing functions within a single IC.
The SN54LS54J offers a triggered transition time of 25ns, enabling quick response times for applications that require minimal delays. The output pulse duration can be varied by adjusting the external timing resistor and capacitor, providing flexibility to customize the timing period as per specific requirements.
It features a true and complementary output wherein both the normal and complement outputs are available simultaneously. This facilitates ease of use and simplifies interfacing with other logic devices
