Description
High-Quality 74LS04 Hex Inverter Logic IC – Essential TTL Logic
The 74LS04 is an industry-standard integrated circuit containing six independent inverters. Each gate performs the Boolean function $Y = \bar{A}$, making it an indispensable tool for digital logic design, signal conditioning, and retro computer restoration.
Perfect for Vintage Computer Maintenance
In many classic home computers from the 1980s, the 74LS04 plays a critical role in generating clock signals or managing “glue logic” between the CPU and peripherals. Because it belongs to the Low-power Schottky (LS) family, it provides the period-accurate logic levels and switching speeds required to maintain the timing integrity of vintage motherboards without the “ringing” issues associated with modern high-speed CMOS variants.
Key Features & Specifications:
- Logic Type: Hex Inverter (6 Independent Gates).
- Technology: 74LS (Low-power Schottky) for the optimal balance of speed and power consumption.
- Package: Standard 14-pin DIL (Dual In-Line) / DIP.
- Operating Voltage: Standard 5V TTL.
- Compatibility: A direct replacement for original 7404, 74LS04, and 74HCT04 variants in most retro applications.
Common Applications:
- Sinclair ZX Spectrum: Often used in clock generation circuits and for inverting control signals.
- Commodore & Apple II: Vital for various logic steering and timing roles across the motherboard.
- DIY Electronics: An ideal chip for creating simple square-wave oscillators or “cleaning up” digital signals on a breadboard.
- Arcade PCB Repair: Found extensively across hundreds of classic arcade game boards for general signal management.
Whether you are a hobbyist refurbishing a piece of computing history or an engineer working on a new TTL-based project, this high-quality 74LS04 IC offers the reliability and performance you require.

