74HC423BQ,115

Overview

The Nexperia 74HC423BQ,115 is a dual retriggerable monostable multivibrator with reset, housed in a DHVQFN16 package (SOT763-1). It operates within a supply voltage range of 2.0 V to 6.0 V and supports ambient temperatures 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 connections. Propagation delays vary by supply voltage, ranging from approximately 19 ns at 6.0 V to 80 ns at 2.0 V.

Feature Summary

• Dual retriggerable monostable multivibrator architecture with direct reset functionality
• Schmitt-trigger action on trigger inputs to tolerate slow rise and fall times
• DHVQFN package design with side-wettable flanks enabling automatic optical inspection

Applications

• Timing generation circuits requiring precise pulse width control
• Debouncing switches or contacts to eliminate signal bounce effects
• Pulse stretching applications for signal synchronization

Procurement Notes

Verify the specific ordering suffix '115' against current Nexperia documentation to confirm packaging details such as reel size or tape specifications. Ensure the component meets the required temperature grade (-40 °C to +125 °C) for your application environment. Cross-reference the DHVQFN16 footprint dimensions with your PCB layout guidelines before finalizing procurement.

Selection Notes

Select this component when dual independent monostable channels are required in a compact surface-mount form factor. The DHVQFN16 package offers thermal enhancement and side-wettable flanks for improved solder joint visibility during automated inspection. Ensure external timing components are selected to meet the desired pulse width requirements within the specified operating voltage range.

Part Context

This part belongs to the 74HC423 family of dual retriggerable monostable multivibrators. It shares functional similarities with the 74HC123 but lacks triggering capability via the reset input. The BQ variant specifically denotes the DHVQFN16 package type, distinguishing it from SO16 or other package options available within the same logic family.

Replacement Considerations

Direct pin-compatible replacements include the 74HC423D in an SO16 package, though physical dimensions differ. Verify that any substitute maintains the DHVQFN16 footprint if board space is constrained. Check datasheets for matching propagation delay characteristics and supply voltage ranges to ensure circuit compatibility.