74LV123BQ,115

Multivibrators Overview

The Nexperia 74LV123BQ,115 is a dual retriggerable monostable multivibrator with reset, housed in a DHVQFN-16 (SOT763-1) package. It operates within a supply voltage range of 1.0 V to 5.5 V and supports an ambient temperature range from -40 °C to +125 °C. Propagation delays vary by voltage: 18 ns typical at 4.5 V–5.5 V, 25 ns at 3.0 V–3.6 V, 30 ns at 2.7 V, and 40 ns at 2.0 V. Pulse widths are programmable via external REXT and CEXT components.

Multivibrators Feature Summary

• Dual retriggerable architecture allows extending output pulse width indefinitely up to a 100% duty factor.
• Schmitt-trigger action on inputs nA and nB provides tolerance for slow input rise and fall times.
• Direct reset input (nRD) terminates active output pulses immediately upon receiving a LOW-going edge.
• Optimized for low-voltage applications with CMOS low power dissipation characteristics.

Multivibrators Applications

• Timing generation and pulse stretching circuits
• Debouncing switches or mechanical contacts
• Frequency division and pulse width modulation

Multivibrators Procurement Notes

Verify the specific ordering suffix ',115' corresponds to the DHVQFN-16 package variant. Confirm that the required operating temperature range aligns with the specified -40 °C to +125 °C limits. Ensure external component values for REXT and CEXT are selected within the recommended resistance ranges defined in the datasheet for the target supply voltage.

Multivibrators Selection Notes

Select this component when a dual-channel monostable solution is required with Schmitt-trigger inputs for noise immunity. The LV series is suitable for systems requiring operation down to 1.0 V. Consider the DHVQFN-16 package dimensions if PCB space is constrained. Verify that the retriggering timing requirements match the device's internal delay specifications.

Multivibrators Part Context

This part belongs to the Nexperia 74LV logic family, designed for low-voltage digital applications. It functions as a dual monostable multivibrator, distinct from standard astable oscillators or non-retriggerable variants. The BQ suffix specifically denotes the leadless DHVQFN thermal enhanced package, differentiating it from SO or TSSOP versions.

Multivibrators Replacement Considerations

Public confirmed substitute part numbers include 74HC123BQ,115 and 74LV123PW,115.