74LV123PW,118

Overview

The Nexperia 74LV123PW,118 is a dual retriggerable monostable multivibrator with reset housed in a TSSOP16 (SOT403-1) package. It operates within a supply voltage range of 1.0 V to 5.5 V and supports temperatures from -40 °C to +125 °C. Propagation delays vary by voltage: typical values are 120 ns at 1.2 V, 40 ns at 2.0 V, 30 ns at 2.7 V, 25 ns at 3.0–3.6 V, and 18 ns at 4.5–5.5 V. Reset propagation delay ranges from 100 ns at 1.2 V down to 14 ns at 4.5–5.5 V. The device features Schmitt-trigger inputs for noise immunity and accepts TTL levels between 2.7 V and 3.6 V.

Feature Summary

• Dual retriggerable monostable multivibrator architecture allowing pulse extension via edge-triggered inputs
• Schmitt-trigger action on trigger inputs ensures tolerance for slow rise and fall times
• Direct reset input capability terminates output pulses immediately upon LOW-going edge
• Wide supply voltage compatibility optimized for low-voltage applications from 1.0 V to 3.6 V

Applications

• Pulse width generation and timing circuits
• Debouncing switches or contacts
• Frequency division and pulse stretching
• Timing delays in digital logic systems

Procurement Notes

Verify the specific ordering suffix '118' corresponds to the TSSOP16 package variant SOT403-1. Confirm that the required operating temperature range includes the extended limit up to +125 °C if applicable to the design environment. Ensure external component selection for REXT and CEXT adheres to the recommended resistance and capacitance limits defined in the datasheet dynamic characteristics section.

Selection Notes

Select this component when dual independent monostable channels are required in a space-constrained surface-mount application. The TSSOP16 package offers a thin profile suitable for modern PCB layouts. Consider the LV series for its wide voltage range and CMOS low power dissipation compared to standard HC or HCT families, particularly where interface with lower voltage logic is necessary.

Part Context

This part belongs to the Nexperia 74LV family of low-voltage CMOS logic devices. The 74LV123 specifically provides dual monostable multivibrator functionality. Other package options for the same logical function include SO16 (74LV123D) and DHVQFN16 (74LV123BQ), offering flexibility for different thermal and spatial requirements while maintaining identical electrical performance specifications.

Replacement Considerations

Check for direct pin-compatible alternatives such as the 74LVC123 or 74AHC123 variants from Nexperia or other manufacturers. Verify that substitute parts support the required 1.0 V minimum supply voltage if operating below 2.7 V, as some high-speed CMOS families may have higher minimum voltage thresholds.