MC74VHC1GT126MU3TCG

Overview

The MC74VHC1GT126MU3TCG is a single noninverting 3-state buffer from the MiniGate series, manufactured by onsemi. It operates within a supply voltage range of 2.0 V to 5.5 V and features TTL-level input thresholds. The device provides high noise immunity through a buffered three-stage internal circuit and includes over-voltage tolerant inputs and outputs up to 5.5 V. It supports partial power down protection via IOFF functionality and delivers source/sink currents of 8 mA at 3.0 V. The component is housed in a UDFN6 package with dimensions of 1.0 x 1.0 mm.

Feature Summary

• Features TTL-level input thresholds for direct interfacing with 5 V circuits while operating at lower voltages.
• Includes over-voltage tolerant input and output structures that withstand voltages up to 5.5 V regardless of supply voltage.
• Supports partial power down protection through IOFF functionality to prevent excessive current draw during power-down states.

Applications

• Interfacing 5 V logic circuits with 3 V logic systems
• Signal buffering and line driving in portable devices
• Clock distribution and timing signal conditioning

Procurement Notes

Verify the specific ordering suffix MU3TCG corresponds to the UDFN6 1.0x1.0 mm package with 0.35 mm pitch. Confirm the GT designation indicates TTL-level input thresholds rather than CMOS levels. Ensure compliance with RoHS and Pb-Free requirements as specified in the datasheet. Check for any automotive-specific -Q suffix requirements if the application demands AEC-Q100 qualification.

Selection Notes

Select this component when a compact single-gate buffer with TTL-compatible inputs is required. The UDFN6 package offers a small footprint suitable for space-constrained designs. Consider the 8 mA drive capability and low quiescent current for battery-operated applications. Verify that the 3-state output control meets the system's bus isolation needs.

Part Context

This part belongs to the MC74VHC1G/1GT family of single gate logic ICs. It shares functional similarities with the MC74VHC1G126 but differs in input threshold characteristics. The MiniGate series focuses on providing standard logic functions in minimal physical space. Other variants in the family include inverters, NAND gates, and buffers with varying input threshold levels.

Replacement Considerations

MC74VHC1G126MU3TCG serves as a direct replacement if CMOS-level input thresholds are acceptable instead of TTL levels. For automotive applications requiring unique site control, consider parts with the -Q suffix such as MC74VHC1GT126MU3TCG-Q. Verify pinout compatibility across different package options within the same logical family.