onsemi MC74HC1G04DFT2G: Single Inverter Gate Datasheet and Application Overview

The onsemi MC74HC1G04DFT2G is a high-performance, single CMOS inverter gate integrated circuit, representing a fundamental building block in modern digital logic design. Packaged in a space-saving SC-70-5 / SOT-353 form factor, this device is engineered for applications where board real estate is at a premium. As part of the 74HC high-speed CMOS family, it combines low power consumption with strong output drive capability, making it an ideal choice for a vast array of electronic systems.

A deep dive into its datasheet reveals key electrical characteristics that define its performance. The chip operates over a broad voltage range from 2.0 V to 6.0 V, providing excellent flexibility for both 3.3V and 5V systems. It features high noise immunity common to CMOS technology and can source or sink up to 4 mA of current at its output, enabling it to directly drive LEDs or interface with other ICs. Its typical propagation delay is remarkably fast, around 8 ns at 5V, ensuring signal integrity in high-speed circuits. The device is also characterized for operation from -40°C to +85°C, suitable for industrial and consumer applications.

The application scope for this single gate is extensive. Its primary function is to invert a digital signal; a HIGH input (1) becomes a LOW output (0), and vice versa. Beyond this basic operation, it is commonly deployed in several critical roles:

Signal Conditioning: Cleaning up noisy digital signals or reshaping degraded clock waveforms.

Clock Inversion: Generating complementary clock phases required by certain memory and logic devices.

Simple Oscillators: When configured with resistors and capacitors, it can form astable multivibrators (oscillators) for generating simple clock signals.

Buffer: Although inverting, it can serve as a buffer to isolate a sensitive signal source from a heavy load, thanks to its current drive capability.

Glue Logic: Serving as a compact solution for implementing custom logic functions in larger systems, eliminating the need for a larger, multi-gate IC.

ICGOOODFIND: The onsemi MC74HC1G04DFT2G is an exemplary component of single-gate logic, offering a perfect blend of miniaturization, low power consumption, and robust performance. Its versatility in signal inversion, oscillation, and buffering makes it an indispensable tool for engineers designing space-constrained, efficient, and reliable digital circuits.

Keywords: CMOS Inverter, Logic Gate, SC-70-5 Package, Signal Conditioning, Oscillator Circuit