MC74VHC1G125P5T5G

Overview

The MC74VHC1G125P5T5G 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 functionality and includes over-voltage tolerant inputs and outputs up to 5.5 V. Packaged in SOT-953 (SC-88A), it delivers source/sink currents of 8 mA at 3.0 V with a typical propagation delay of 3.5 ns at 5 V.

Feature Summary

• Single non-inverting 3-state buffer with buffered output for stable performance
• Inputs and outputs tolerate voltages up to 5.5 V regardless of supply level
• IOFF feature enables partial power down protection to prevent excessive current draw
• CMOS-level input thresholds suitable for interfacing between different voltage domains

Applications

• Interfacing 5 V circuits to 3 V circuits
• Partial power down applications requiring bus hold or isolation
• High noise immunity signal buffering in portable devices

Procurement Notes

Verify the specific package suffix P5 corresponds to the SOT-953 case outline when sourcing. Confirm that the ordering code matches the required shipping quantity and tape/reel specifications. Ensure compliance with RoHS and lead-free requirements as indicated by the G suffix in the part number. Cross-reference the datasheet revision date to ensure alignment with current manufacturing standards.

Selection Notes

Select this component when a single-channel non-inverting buffer with tri-state capability is required in a compact footprint. The VHC series offers speed comparable to LVC while maintaining compatibility with standard CMOS levels. Consider the SOT-953 package for space-constrained designs where SC-88A dimensions are preferred. Validate thermal resistance and power dissipation limits against the application's ambient temperature conditions.

Part Context

This device belongs to the MC74VHC1G125 family, which also includes the TTL-threshold variant MC74VHC1GT125. Both share identical electrical characteristics and pinouts but differ in input threshold voltage definitions. The P5T5G suffix denotes the SOT-953 package with specific taping and reel configurations for automated assembly processes.

Replacement Considerations

MC74VHC1GT125P5T5G serves as a direct functional substitute if TTL-level input thresholds are acceptable instead of CMOS thresholds. Other single-buffer VHC devices in SOT-953 packages may be considered if pinout compatibility and electrical parameters align with the design requirements.