74ls21 dip ic

The 74LS21 is a dual 4-input AND gate integrated circuit, containing two independent AND gates in a single 14-pin DIP package. Part of the 74LS Schottky TTL family, it provides high-speed logic operations for digital systems requiring 4-input AND functionality.

✅ Specifications:

• IC Part Number: 74LS21, SN74LS21N, 7421

• Function: Dual 4-Input AND Gate

• Logic Family: 74LS (Low-Power Schottky TTL)

• Package: 14-pin DIP (Dual In-line Package)

• Supply Voltage: 4.75V – 5.25V DC (5V typical)

• Propagation Delay: 10ns (typical)

• Input/Output: TTL-compatible

• Fan-Out: 10 LS loads

• Operating Temperature: 0°C to 70°C (commercial grade)

• Pin Configuration: Standard 14-pin DIP layout

• Quantity: 1 Piece

🔧 Logic Function:
Y = A · B · C · D (Output is HIGH only when ALL inputs are HIGH)

📦 Applications:
✔️ Digital logic circuit implementation
✔️ Enable/disable control functions
✔️ Data validation and comparison circuits
✔️ Address decoding in memory systems
✔️ Boolean function generation
✔️ Educational digital electronics experiments
✔️ Retro computing and vintage logic projects
✔️ Glue logic for microprocessor systems