HLF 74LS21 Dual 4-Input AND Gate – DIP14 | Low-Power Schottky TTL Logic IC | 4.75V–5.25V, 0°C to +70°C | Through-Hole Package

The HLF 74LS21 is a Dual 4-Input AND Gate IC using Low-Power Schottky TTL (LS) technology, providing high-speed switching, low power consumption, and excellent noise immunity. Each gate features four inputs, suitable for digital control, industrial logic, and embedded systems. The IC operates at 4.75V–5.25V with a temperature range of 0°C to +70°C, ensuring stable and reliable TTL logic performance. The DIP14 through-hole package is ideal for prototyping and standard PCB assembly.

Key Features:

• Logic Function: Dual 4-Input AND Gate (2 Independent Gates)

• Technology: Low-Power Schottky TTL (LS Series)

• Operating Voltage: 4.75V – 5.25V

• Operating Temperature: 0°C to +70°C

• Package Type: DIP14 (Dual In-Line Package)

• Mounting Type: Through-Hole

• High-Speed TTL Switching: Fast propagation for digital circuits

• Low Power Consumption: Efficient LS series design

• Excellent Noise Immunity: Reliable in industrial and embedded systems

• Standard Pinout: Easy integration with TTL logic circuits

Applications:

• Digital Logic and Control Circuits

• Embedded and Industrial Automation Systems

• Timing, Sequencing, and Signal Processing

• Microcontroller Interfaces

• Educational and Prototype Electronics.