74HC423D,653

Overview

The Nexperia 74HC423D,653 is a dual retriggerable monostable multivibrator housed in a 16-lead SO16 (SOT109-1) plastic small outline package. 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 control via external resistor and capacitor components.

Feature Summary

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

Applications

• Timing generation circuits requiring adjustable pulse widths
• Debouncing switches or contacts
• Pulse stretching applications
• Frequency division circuits

Procurement Notes

Verify the specific ordering suffix ',653' corresponds to the SO16 tape-and-reel packaging configuration. Confirm that the required operating temperature range aligns with the -40 °C to +125 °C specification provided in the product data sheet. Ensure design compatibility with the 74HC logic family voltage levels.

Selection Notes

Select this component when dual independent monostable circuits are required in a single package. The 74HC series offers wide supply voltage flexibility compared to HCT variants. Verify that the external timing components meet the recommended resistance and capacitance limits for the desired pulse duration.

Part Context

This part belongs to the Nexperia 74HC logic family, utilizing CMOS technology. It is functionally similar to the 74HC123 but lacks triggering capability via the reset input. The 'D' designation indicates the SO16 surface-mount package variant manufactured by Nexperia USA Inc.

Replacement Considerations

The 74HC123D,653 serves as a functional substitute; however, it permits triggering via the reset input, which differs from the 74HC423 behavior.