Description

The HLF74HC04N is a Hex Inverter IC manufactured by HLF, housed in a standard 14-pin DIP through-hole package. This device contains six independent inverters, with each gate performing the Boolean function Y = A in positive logic — meaning each of the six sections simply outputs the logical inverse (NOT) of its input signal. 

The inputs include clamp diodes that enable the use of current limiting resistors to interface inputs to voltages in excess of VCC, making the chip flexible for interfacing with a range of input voltage levels. A balanced output allows the device to sink and source similar currents, giving reliable, symmetric switching performance in both directions. Being part of the high-speed CMOS (HC) logic family, it offers low power consumption combined with TTL-compatible speed, making it a popular choice for general logic inversion tasks in digital circuits.

As a fundamental logic building block, the 74HC04 is widely used in oscillator circuits, signal inversion, logic level conversion, and general combinational logic design — a staple in both hobbyist projects and professional digital circuit design.

Key Specifications

• Function: Hex inverter (6 independent NOT gates)
• Logic Family: High-Speed CMOS (HC)
• Package: 14-pin PDIP (through-hole)
• Manufacturer: HLF
• Operating Temperature: -40°C to +125°C (typical for this family)
• Input clamp diodes for voltage interfacing flexibility
• Balanced sink/source output drive

Common Applications

• Logic signal inversion (NOT gate functions)
• Oscillator and clock generator circuits
• Logic level buffering and conditioning
• General-purpose digital logic design
• Educational and hobbyist electronics projects

Package Includes

• 1 x HLF74HC04N IC (14-pin DIP)