MC74VHC1GT50DFT1G

Overview

The MC74VHC1GT50DFT1G is a single-channel, non-inverting buffer from the onsemi VHC logic family. It operates within a supply voltage range of 2.0 V to 5.5 V and features TTL-level input thresholds. The device provides over-voltage tolerant inputs and outputs up to 5.5 V, enabling safe interfacing between 3 V and 5 V circuits. It supports partial power-down protection via IOFF and delivers source/sink currents of 8 mA at 3.0 V. Propagation delay is typically 3.5 ns at 5 V with a 15 pF load.

Feature Summary

• TTL-level input thresholds for direct compatibility with standard digital logic families
• Over-voltage tolerant I/O structures allowing operation with voltages exceeding the supply rail
• IOFF feature enables partial power-down protection to minimize leakage during standby states

Applications

• Interfacing 3 V logic circuits with 5 V systems
• Address bus drivers in portable computing devices
• Clock buffering in battery-powered instrumentation

Procurement Notes

Verify that the ordering suffix matches the required package type, as the MC74VHC1GT50 series utilizes multiple footprint options including SC-88A, SC-74A, SOT-553, and UDFN6. Confirm the specific date code orientation and pin 1 marking configuration required for your assembly process. Ensure compliance with RoHS standards and lead-free packaging requirements specified by the manufacturer.

Selection Notes

Select this component when TTL-compatible input thresholds are necessary rather than CMOS levels. The MC74VHC1G50 variant should be considered if CMOS-level inputs are preferred. Verify that the SC-88A package dimensions align with the PCB layout constraints. Evaluate the propagation delay specifications against the system timing requirements to ensure signal integrity is maintained across the operating temperature range.

Part Context

This part belongs to the MC74VHC1G50/MC74VHC1GT50 advanced high-speed CMOS buffer family. It is designed for tiny footprint packages to support space-constrained applications. The device is manufactured using silicon gate CMOS technology and is available in various surface-mount configurations to accommodate different board density requirements.

Replacement Considerations

MC74VHC1GT50DFT2G serves as a functional substitute within the same SC-88A package family.