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मूल्य सूची: Retail Price (B2C) Pimpri मूल्य सूची
7408 AND Gate IC DIP 14 pin

7408 AND Gate IC DIP 14 pin

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SpecificationDetails
Logic Family74LS (Low-power Schottky)
Logic TypeAND Gate
Number of Gates4 (Quad)
Number of Inputs2 per Gate
Operating Voltage4.75V to 5.25V (Standard 5V)
Output Current8mA
Package TypeDIP-14 (Through-Hole)
Price
₹ 16.95 ₹ 16.95
(Tax included)

बारकोड: 90506

Product Description

The 74LS08 Quad 2-Input AND Gate IC is a fundamental digital logic component containing four independent AND gates within a single 14-pin package. Each gate performs the Boolean function $Y = A \cdot B$, where the output is HIGH (1) only if both inputs are HIGH (1). Utilizing Low-power Schottky (LS) technology, this IC provides a high-speed logic transition with reduced power consumption compared to the original 74 series. It is a staple in digital electronics, widely used for enabling signals, address decoding, and building complex combinational logic circuits in computer systems and industrial automation.

Key Features

  • Four Independent Gates: A single 14-pin chip can handle four separate logical "AND" operations, optimizing PCB space.

  • Low Power Consumption: The "LS" series is designed for high efficiency while maintaining fast switching speeds.

  • TTL Compatibility: Standard 5V logic levels allow for direct interfacing with microcontrollers like Arduino, 8051, and PIC.

  • Fast Switching: Typical propagation delay of approximately 15ns, making it suitable for high-speed digital timing applications.

  • Standard DIP-14 Package: Easily fits into breadboards, stripboards, and 14-pin IC sockets for rapid prototyping.

Technical Details

  • Propagation Delay: ~15ns.

  • Operating Temperature: 0°C to +70°C.

  • Pin Configuration: Pin 14 (VCC), Pin 7 (GND).

Prototyping and Engineering Tips from Robogears

  • The "Both High" Logic: CRITICAL: Remember that an AND gate output only goes HIGH if every input is HIGH. If even one input is LOW or floating, the output will stay LOW. This makes it ideal for "Safety Interlock" circuits where multiple conditions must be met before a machine starts.

  • Avoid Floating Inputs: Never leave the input pins of unused gates floating. Floating pins can pick up stray electromagnetic interference (EMI), leading to unpredictable logic levels and increased power consumption. Connect unused inputs to Ground (GND).

  • Decoupling for Stability: High-speed switching in logic ICs creates minor electrical noise on the power lines. Always place a 0.1µF Ceramic Capacitor between Pin 14 (VCC) and Pin 7 (GND) as close to the chip as possible to maintain a clean logic signal.

  • Logic Level Compatibility: While the 74LS08 is a 5V device, if you are using it with 3.3V microcontrollers (like an ESP32 or Raspberry Pi Pico), ensure you use a Logic Level Shifter to prevent the 5V output of the gate from damaging the 3.3V input pins of your controller.

  • Cascading for More Inputs: You can combine two 2-input AND gates to create a single 3-input AND gate. Simply connect the output of the first gate to one input of the second gate. The final output will only be HIGH when all three initial inputs are HIGH.

Package Includes

  • 1 x 74LS08 Quad 2-Input AND Gate IC (DIP-14)

Disclaimer: Product images are shown for illustrative purposes only. The exact branding placement or the specific manufacturer code printed on the IC may vary slightly between manufacturing batches, but all technical specifications and 74LS08 performance standards remain as described.

Safety Warning: Always ensure your power supply is regulated to 5V. Voltages above 7V will cause permanent damage to the internal Schottky transistors. Double-check the IC orientation using the notch on the plastic body to identify Pin 1 before applying power.