74LV123DB,118

Overview

The Nexperia 74LV123DB,118 is a dual retriggerable monostable multivibrator with reset housed in an SO16 (SOT109-1) package. It operates on a supply voltage range of 1.0 V to 5.5 V and supports temperatures from -40 °C to +125 °C. The device features Schmitt-trigger inputs for noise immunity and accepts TTL levels between 2.7 V and 3.6 V. Propagation delay ranges from 14 ns to 46 ns depending on voltage. Output currents reach ±25 mA, with low power CMOS dissipation.

Feature Summary

• Dual retriggerable monostable multivibrator architecture
• Schmitt-trigger action on all inputs except reset
• Wide supply voltage compatibility from 1.0 V to 5.5 V
• Direct reset capability to terminate output pulses

Applications

• Pulse generation circuits
• Timing delays
• Frequency division
• Debouncing switches

Procurement Notes

Verify the specific ordering suffix '118' corresponds to the SO16 plastic small outline package (SOT109-1). Confirm the temperature grade matches the required operational range of -40 °C to +125 °C. Ensure external component selection aligns with the specified REXT and CEXT limits for the target supply voltage.

Selection Notes

Select this component when dual independent timing channels are required within a single package. The LV series offers lower power consumption compared to HC/HCT families while maintaining high-speed performance. Verify that the external resistor and capacitor values fall within the recommended operating conditions for the chosen supply voltage.

Part Context

This part belongs to the Nexperia 74LV logic family, designed for low-voltage applications. The 74LV123 provides two identical monostable multivibrator circuits. It is suitable for systems requiring precise pulse width modulation or signal conditioning where input noise rejection is critical due to the integrated Schmitt triggers.

Replacement Considerations

Check for equivalent parts such as the 74LVC123 if lower voltage operation below 1.0 V is not needed. Verify pinout compatibility with the SO16 package before substitution.