MC74VHC1G125DF1G

Overview

The MC74VHC1G125DF1G is a single non-inverting 3-state buffer from the VHC logic family, manufactured by onsemi. It operates within a supply voltage range of 2.0 V to 5.5 V and features CMOS-level input thresholds. The device provides high noise immunity through its internal three-stage circuit design. It supports partial power down protection via IOFF functionality and includes input/output structures tolerant up to 5.5 V, enabling safe interfacing between 5 V and 3 V circuits. Typical propagation delay is 3.5 ns at 5 V.

Feature Summary

• Single-channel non-inverting buffer with 3-state output capability
• CMOS-level input thresholds for standard logic compatibility
• IOFF feature enables partial power down protection
• Input/output over-voltage tolerance up to 5.5 V

Applications

• Interfacing 5 V circuits to 3 V circuits
• Portable equipment requiring low power consumption
• Battery-powered systems

Procurement Notes

Verify the specific suffix DF1G corresponds to the SC-88A package variant when sourcing. Confirm RoHS compliance status as per current manufacturer declarations. Ensure the ordering part number matches the required input threshold type (CMOS vs TTL) to avoid functional mismatches in system design.

Selection Notes

Select this component for applications requiring a single-buffer solution with 3-state control in a compact footprint. The CMOS input threshold distinguishes it from the GT125 variant which uses TTL thresholds. Consider the SC-88A package constraints for PCB layout and thermal management requirements.

Part Context

This device belongs to the MC74VHC1G series of ultra-high-speed CMOS logic devices. It is designed for low-power operation and small form factor applications. The series offers improved speed-over-power performance compared to older logic families, making it suitable for modern portable electronics.

Replacement Considerations

The M74VHC1GT125DF1G serves as a related alternative but utilizes TTL-level input thresholds instead of CMOS. Verify interface voltage levels before substitution. Other variants in the VHC1G family may offer different packages or automotive qualifications.