74HCT423DB,112

Overview

The 74HCT423DB,112 is a dual retriggerable monostable multivibrator manufactured by Nexperia. It operates within a supply voltage range of 2.0 V to 6.0 V and features Schmitt-trigger inputs for noise immunity. The device generates output pulses controlled by external resistor (REXT) and capacitor (CEXT) components. It includes direct reset functionality and clamp diodes on inputs. The component is housed in an SO16 plastic small outline package with 16 leads.

Feature Summary

• Dual retriggerable monostable multivibrator architecture
• Schmitt-trigger action on trigger inputs for slow signal tolerance
• Direct reset input terminates output pulse immediately
• CMOS low power dissipation with high noise immunity

Applications

• Pulse width generation and timing control
• Debouncing switches or contacts
• Frequency division circuits
• Timing delay applications

Procurement Notes

Verify the specific ordering suffix 'DB,112' against the manufacturer's current catalog to confirm package type and availability status. Confirm RoHS compliance requirements match project specifications. Check for any recent product change notifications regarding manufacturing site transfers or specification updates before finalizing procurement plans.

Selection Notes

Select this component when dual independent monostable circuits are required in a single package. Ensure the external timing components selected can support the desired pulse width calculations based on the recommended operating conditions. Verify that the supply voltage range aligns with the system's available power rails and that the package footprint matches the PCB design constraints.

Part Context

This part belongs to the 74HCT logic family, designed for compatibility with TTL levels while utilizing CMOS technology. The '423' designation indicates a dual monostable multivibrator function. The 'DB' suffix specifies the SO16 surface-mount package variant. This series provides a cost-effective solution for basic timing and pulse shaping tasks in digital systems.

Replacement Considerations

Public confirmed substitute part numbers: None identified.