Nexperia 74HCT123D Dual Retriggerable Monostable Multivibrator IC SOIC-16

Nexperia 74HCT123D is a dual retriggerable monostable multivibrator IC supplied in an SOIC-16 package, designed to generate precise output pulses.

Overview

The 74HCT123D produces output pulses whose width is set by an external resistor (REXT) and capacitor (CEXT). It is fully pin-compatible with low-power Schottky TTL (LSTTL) logic families, allowing straightforward integration into a wide range of existing designs. The Schmitt-trigger action on the nA and nB inputs gives high noise immunity and tolerance to slower input rise and fall times, which supports reliable operation in electrically noisy environments.

Output Pulse Control

• Basic pulse width is programmed by external timing components.
• The basic output pulse can be extended through retriggering on the gated active-low (nA) or active-high (nB) edge inputs, allowing pulse periods as long as required, up to a 100% duty factor.
• Any output delay can be terminated immediately by a low-going edge on the direct reset input (nRD), which also inhibits further triggering during the reset.

Applications

The device suits applications requiring precision timing, pulse shaping and delay generation. Common uses include debouncing switches, creating timing delays in sequential logic, and generating long-duration pulses for control systems in industrial equipment and consumer electronic products.

Specifications

• Package: SOIC-16
• Width: 3.3
• Depth: 1.5
• Height: 4.3
• Weight: 0.302 g

Choose the Nexperia 74HCT123D when you need a dual retriggerable monostable multivibrator IC with external RC timing, a direct reset input and a compact SOIC-16 package.