MC74VHC1G50DFT1

Overview

The MC74VHC1G50DFT1G is a single-channel, non-inverting buffer from the 74VHC logic family. It operates within a supply voltage range of 2.0 V to 5.5 V and features CMOS level input thresholds. The device provides push-pull outputs capable of sourcing and sinking 8 mA at 3.0 V. It utilizes advanced high-speed CMOS technology in an SC-88A (SOT-353) package with five pins. Key electrical characteristics include a typical propagation delay of 3.5 ns at 5 V and a quiescent supply current of 1 µA.

Feature Summary

• Advanced high-speed CMOS technology for efficient signal buffering
• Input structures provide protection against over-voltage up to 5.5 V regardless of supply voltage
• IOFF feature supports partial power-down protection to minimize leakage
• Designed for operation across a wide temperature range from -55°C to +125°C

Applications

• Interface circuits between 5 V and 3 V logic domains
• Signal buffering in portable and battery-operated equipment
• Clock distribution and timing signal conditioning
• Hot insertion protection scenarios requiring voltage mismatch tolerance

Procurement Notes

Verify the complete part number including the suffix 'G' which indicates Pb-Free and RoHS compliance. Confirm the specific ordering code variant, such as DFT1G versus DFT2G, as these denote different pin orientations or manufacturing dates within the same package type. Ensure the application environment remains within the specified DC supply voltage limits of 2.0 V to 5.5 V to maintain functional reliability.

Selection Notes

Select this component when a single-channel, non-inverting buffer with CMOS input thresholds is required. It is suitable for designs needing over-voltage tolerant inputs that exceed the supply rail. Consider the SC-88A package size constraints and the 8 mA drive capability. For TTL-compatible input thresholds instead of CMOS levels, the MC74VHC1GT50 series should be evaluated as an alternative.

Part Context

This device belongs to the MC74VHC1G50/MC74VHC1GT50 family of single-buffer logic ICs manufactured by onsemi. The family shares identical output drive capabilities and packaging options but differs in input threshold characteristics. The MC74VHC1G50 variant specifically utilizes standard CMOS thresholds, distinguishing it from the TTL-threshold MC74VHC1GT50 counterpart within the same product line.

Replacement Considerations

MC74VHC1G50DFT2G serves as a direct replacement with identical functionality but potentially different pin orientation or date code markings.