74LS21 Dual 4-Input AND Gate | TTL Logic | DIP-14

Description

The 74LS21 is a standard TTL (Transistor-Transistor Logic) integrated circuit containing two independent 4-input AND gates. For each gate, the output is HIGH only if all four inputs are HIGH simultaneously; otherwise, the output is LOW. This device is commonly used in digital logic designs where it is necessary to combine multiple enable or control signals into a single output.

As part of the 74LS series, this chip utilizes Schottky-clamped transistors, which provide an excellent balance between high-speed switching and low power consumption, making it a reliable component for standard 5V digital logic systems.

Note: Product images are shown for reference only. The actual product may vary in appearance, manufacturer marking, or logo depending on stock availability.

Features

• Dual (2) independent 4-input AND gates
• Standard TTL logic levels
• High-speed operation (Schottky-clamped technology)
• Low power consumption
• Compatible with other standard 74 series TTL devices
• DIP-14 through-hole package

Benefits

• Consolidates logic for complex gating operations in a single package
• Standardized input thresholds ensure reliable operation in TTL environments
• Robust design ideal for industrial and educational prototyping

Applications

• Complex Logic Synthesis and Gating
• Address Decoding
• Multi-Condition Signal Activation
• Digital Control Systems

Package Includes

• 1 x 74LS21 Dual 4-Input AND Gate IC (DIP-14 Package)

Specifications