74LVC1G123DCTRE4

Overview

The SN74LVC1G123DCTRE4 is a single retriggerable monostable multivibrator from the Texas Instruments LVC logic family. It operates within a supply voltage range of 1.65 V to 5.5 V and supports standard voltages including 1.8 V, 2.5 V, 3.3 V, and 5 V. The device features Schmitt-trigger inputs for noise immunity and delivers output currents of ±32 mA. Propagation delay is specified at 18.6 ns, with a maximum static current of 20 µA. It functions reliably across an extended temperature range from -40°C to +125°C and is housed in an 8-pin VSSOP package.

Feature Summary

• Retriggerable monostable operation allows pulse width extension upon subsequent trigger events before the initial timing cycle concludes.
• Schmitt-trigger inputs provide enhanced noise filtering and signal integrity for clean pulse generation.
• Wide operating voltage compatibility enables integration with both low-power and standard 5V digital systems.
• High drive capability supports direct interfacing with loads requiring significant current without additional buffering.

Applications

• Pulse width modulation and timing control circuits
• Debouncing mechanical switches to prevent multiple false triggers
• Generating precise time delays in sequential logic systems

Procurement Notes

Verify the complete part number including the E4 suffix to confirm lead-free compliance and specific tape-and-reel packaging configuration. Ensure the ordering code matches the required VSSOP-8 variant. Confirm RoHS status and moisture sensitivity level requirements against project specifications prior to procurement to avoid compatibility issues with assembly processes.

Selection Notes

Select this component when a compact, low-power solution for generating fixed-duration pulses is required. The wide voltage range suits diverse power environments, while the high output current simplifies load driving. Verify that the external resistor and capacitor values align with the desired pulse duration formula provided in the datasheet. Consider the thermal performance and package size constraints relative to the PCB layout density.

Part Context

This device belongs to the SN74LVC1G123 series, designed for general-purpose timing applications in portable and battery-operated electronics. The LVC family offers improved speed and lower power consumption compared to older logic standards. The DCTRE4 designation indicates a specific manufacturing lot and reel configuration for surface-mount assembly, ensuring consistency in production yields and handling characteristics.

Replacement Considerations

Direct substitutes include other SN74LVC1G123 variants with different packaging or suffixes, such as SN74LVC1G123DCTT or SN74LVC1G123DCUR. Cross-manufacturer equivalents like Nexperia 74LVC1G123DP may require verification of pinout and electrical parameter alignment. Always validate functional equivalence through detailed datasheet comparison before implementation.