74HCT423DB,118

Overview

The 74HCT423DB,118 is a dual retriggerable monostable multivibrator manufactured by NXP USA Inc. It operates within the HCT logic family and utilizes an SSOP-16 package (SOT338-1). The device functions with a supply voltage range of 4.5 V to 5.5 V and supports an operating temperature range from -40 °C to +125 °C. It features Schmitt-trigger inputs for noise immunity and allows pulse width control via external resistor and capacitor components.

Feature Summary

• Dual retriggerable monostable multivibrator architecture
• Schmitt-trigger action on trigger inputs for slow edge tolerance
• Direct reset input capability to terminate output pulses
• Pin compatible with Low power Schottky TTL (LSTTL)

Applications

• Pulse generation circuits
• Timing delay applications
• Debouncing switches

Procurement Notes

Verify component authenticity through authorized channels as counterfeit electronics exist. Confirm the specific ordering suffix matches the required package variant. Check current product status regarding availability or end-of-life notifications before finalizing design-in decisions.

Selection Notes

Select this component when dual independent monostable circuits are required in a single package. Ensure the HCT logic level compatibility aligns with the system's voltage interface requirements. Verify that the external timing components can achieve the desired pulse width specifications within the specified temperature range.

Part Context

This part belongs to the 74HCT423 series of dual retriggerable monostable multivibrators. It shares functional similarities with the 74HC423 but adheres to HCT logic electrical standards. The DB suffix indicates the SSOP-16 surface-mount package configuration.

Replacement Considerations

The 74HCT423PW,118 serves as a pin-compatible alternative utilizing the TSSOP-16 package.