MC74VHC1G125DFT2G

Overview

The MC74VHC1G125DFT2G is a single non-inverting 3-state buffer from the VHC logic series, 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 a buffered three-stage internal circuit. It supports partial power down protection via IOFF and includes over-voltage tolerant inputs and outputs up to 5.5 V. Typical propagation delay is 3.5 ns at 5 V with a 15 pF load. The component is housed in an SC-88A (SC-70-5/SOT-353) surface-mount package.

Feature Summary

• Provides single-channel non-inverting buffering with 3-state output control for bus line applications
• Features over-voltage tolerant inputs and outputs allowing safe interfacing between 5 V and 3 V circuits
• Supports partial power down mode to prevent excessive current draw during system standby

Applications

• Bus-oriented communications systems requiring signal buffering
• Clock distribution networks for timing signals
• Memory data bus drivers for memory modules
• High-speed digital signal processing interfaces

Procurement Notes

Verify that the ordering suffix matches the required tape and reel quantity and pin orientation specifications. Confirm the specific device code corresponds to the intended voltage threshold variant. Ensure compliance with RoHS and Pb-Free requirements if mandated by the project standards. Check for any automotive-specific suffixes if AEC-Q100 qualification is necessary for the application environment.

Selection Notes

Select this component when a compact single-buffer solution with 3-state capability is required for low-power CMOS logic families. The VHC series offers faster switching speeds compared to standard HC logic while maintaining compatibility with similar supply voltages. Consider the SC-88A package dimensions for PCB layout constraints. Verify that the input threshold levels align with the driving source voltage characteristics.

Part Context

This part belongs to the MC74VHC1G125 family of single non-inverting buffers. The 'T' designation in related variants indicates TTL-level input thresholds, whereas this specific model utilizes CMOS-level thresholds. The family shares identical pinouts and functional behavior across different packaging options such as SC-74A and UDFN6, differing primarily in physical footprint and thermal characteristics.

Replacement Considerations

MC74VHC1GT125DFT2G: Identical functionality but with TTL-level input thresholds instead of CMOS-level.