The IC 7408 integrates four independent 2-input AND gates into a single 14-pin Dual In-line Package (DIP). Each gate outputs a logic HIGH only when both inputs are HIGH. This chip belongs to the well-known 7400 TTL series, widely used for implementing digital logic functions. The IC operates on a standard 5V power supply, and its TTL-compatible inputs and outputs allow easy integration with other logic devices. The IC serves well in signal filtering and gating, allowing only valid or timed signals to pass through a logic system
Engineers use the 7408 in systems that need to evaluate multiple conditions simultaneously. Its fast switching performance, low power consumption, and stable output levels make it ideal for control logic, signal filtering, pulse shaping, and timing applications. Designers often choose the 7408 to build decision-making blocks in computers, embedded systems, digital automation, and educational circuits. You can also find CMOS and LS variants (like SN74LS08N) for lower power use or higher speed, depending on your project’s requirements.
Key Features
Includes four 2-input AND gates
Operates from a 5V TTL logic supply
Delivers fast switching and low delay times
Uses TTL-compatible input/output logic levels
Works in 0°C to 70°C temperature range
Available in DIP-14 and SOIC-14 packages
Well-suited for gate-level logic implementation
Applications
Digital control logic
Logic decision circuits
Signal validation and filtering
Timing and pulse detection
Arithmetic and data flow control
Digital comparators
Sensor-based logic activation
Digital signal routing
Microprocessor-based logic design
Educational circuit experiments
Specifications Table
| Parameter | Value |
|---|---|
| Logic Family | TTL (Standard) |
| Number of Gates | 4 |
| Gate Type | AND |
| Inputs per Gate | 2 |
| Logic Level (High) Input | ≥ 2.0V |
| Logic Level (Low) Input | ≤ 0.8V |
| Supply Voltage (Vcc) | 4.75V to 5.25V |
| Typical Operating Voltage | 5V ‘ |
| Output Current (Low) | 16 mA |
| Output Current (High) | -400 µA |
| Power Dissipation | ~10 mW |
| Propagation Delay | ~10 ns (typical) |
| Operating Temperature Range | 0°C to 70°C |
| Package Type | DIP-14 / SOIC-14 |
| Pin Count | 14 |
