SN74LV123AD

Overview

The SN74LV123AD is a dual retriggerable monostable multivibrator from the Texas Instruments 74LV series. It operates within a supply voltage range of 2 V to 5.5 V and features Schmitt-trigger inputs for noise immunity. The device provides two independent circuits in a 16-pin SOIC package, with propagation delays as low as 13 ns. It supports output currents of 12 mA at both high and low states, ensuring robust driving capability across industrial temperature ranges.

Feature Summary

• Dual retriggerable monostable multivibrator architecture
• Schmitt-trigger inputs for enhanced noise filtering
• Wide operating voltage range supporting 2 V to 5.5 V systems
• High-output drive current capability of 12 mA

Applications

• Pulse width generation and timing control
• Frequency division and pulse shaping
• Debouncing switches and touch sensors
• Delay line applications in digital logic circuits

Procurement Notes

Verify the exact suffix against the datasheet to confirm package type and temperature rating. Ensure the ordering part number matches the required pin configuration and RoHS compliance status. Cross-reference manufacturer documentation for any recent PCN updates regarding assembly sites or material changes before finalizing procurement.

Selection Notes

Select this component when dual independent timing channels are required in a compact surface-mount package. The LV series offers lower power consumption compared to legacy counterparts while maintaining compatibility with standard logic levels. Verify that the input signal characteristics align with the Schmitt trigger thresholds for reliable operation.

Part Context

This device belongs to the Texas Instruments 74LV family of low-voltage CMOS logic devices. It is designed for applications requiring high-speed performance with low power dissipation. The SN74LV123 variant specifically addresses timing needs where retriggerability and precise pulse generation are critical within mixed-signal environments.

Replacement Considerations

Check for direct equivalents such as the SN74LV123APWR (TSSOP) if package adaptation is needed. Other manufacturers may offer functionally similar parts like the Nexperia 74LV123D, but verify pinout compatibility and electrical specifications carefully.