74HC423D,652

Overview

The Nexperia 74HC423D,652 is a dual retriggerable monostable multivibrator housed in a 16-lead SO plastic small outline package (SOT109-1). It operates within a supply voltage range of 2.0 V to 6.0 V and supports an ambient temperature range from -40 °C to +125 °C. The device features Schmitt-trigger inputs for noise immunity and allows pulse width programming via external resistor and capacitor components.

Feature Summary

• Dual retriggerable monostable multivibrator architecture
• Schmitt-trigger action on trigger inputs
• Direct reset functionality to terminate output pulses
• CMOS low power dissipation with high noise immunity

Applications

• Timing generation circuits
• Pulse width modulation systems
• Debouncing switches or contacts
• Frequency division applications

Procurement Notes

Verify the specific ordering suffix '652' corresponds to the standard tape-and-reel packaging format required for automated assembly processes. Confirm that the component meets RoHS compliance standards and check for any specific halogen-free declarations if mandated by your manufacturing environment requirements.

Selection Notes

Select this component when dual independent timing channels are required within a single integrated circuit. Ensure the application design accommodates the necessary external timing components, as the internal circuitry relies on these passive elements to define the precise output pulse duration and frequency characteristics.

Part Context

This part belongs to the 74HC logic family, utilizing CMOS technology for efficient operation. It serves as a functional equivalent to other monostable multivibrators but offers distinct advantages through its retriggerable capability and direct reset input, providing greater flexibility in complex digital timing control scenarios.

Replacement Considerations

Check for cross-reference availability from other manufacturers offering identical pinouts and electrical specifications. Verify that any substitute maintains the same SO16 package dimensions and thermal characteristics to ensure mechanical compatibility without requiring PCB layout modifications.