74LVC1G123DCURG4

Overview

The SN74LVC1G123DCURG4 is a single retriggerable monostable multivibrator from Texas Instruments, designed for operation with supply voltages ranging from 1.65 V to 5.5 V. It features Schmitt-trigger inputs to handle slow input transition rates and ensure glitch-free triggering. The output pulse duration is programmable via external resistor and capacitor values connected to the Cext and Rext/Cext pins. This component supports mixed-mode voltage operation and includes an Ioff feature for partial power-down mode compatibility.

Feature Summary

• Schmitt-trigger inputs provide sufficient hysteresis to process slow input transition rates without generating glitches at the output.
• Output pulse duration is externally programmable using standard passive components, allowing for flexible timing configurations.
• Supports mixed-mode voltage operation, enabling interface between devices operating at different logic voltage levels.

Applications

• Audio and video receivers
• Blu-ray players and home theater systems
• Digital broadcast and internet radio players

Procurement Notes

Verify the complete part number including the G4 suffix to confirm lead-free and RoHS compliance status. Ensure the ordering suffix matches the specific package variant required for your PCB layout. Confirm that the device meets the necessary environmental specifications for your intended application scope before finalizing procurement orders.

Selection Notes

Select this component when a single-channel retriggerable timer is required within a low-voltage logic family. It is suitable for applications needing mixed-mode voltage interfacing or robust handling of slow signal transitions. Consider the VSSOP-8 package constraints and external timing component requirements during the circuit design phase.

Part Context

This device belongs to the SN74LVC1G123 series of single retriggerable monostable multivibrators. It is manufactured by Texas Instruments and utilizes the LVC logic family technology. The component is available in an 8-VSSOP surface-mount package, providing a compact solution for timing applications in portable and space-constrained electronic designs.

Replacement Considerations

The SN74LVC1G123DCUR is a compatible alternative within the same product line. Verify pinout compatibility and electrical characteristics against the original datasheet before substitution. Ensure that any replacement part maintains the required voltage range and package dimensions for the existing assembly.