74ls138 dip ic

🔹 74LS138 DIP IC – 3-to-8 Line Decoder/Demultiplexer (SN74LS138N)

The 74LS138 is a high-speed 3-to-8 line decoder/demultiplexer IC. It accepts 3 binary inputs (A0-A2) and activates one of eight active-low outputs based on the binary value. It’s widely used in memory address decoding, data routing, and logic circuit design.

✅ Specifications:

• IC Type: 3-to-8 Line Decoder/Demultiplexer

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

• Package: 16-pin DIP (SN74LS138N / 74138)

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

• Propagation Delay: 20ns (typical)

• Input/Output: TTL-compatible

• Enable Inputs: 3 (G1, G2A, G2B) for cascading

• Outputs: 8 active-low (Y0 – Y7)

• Operating Temperature: 0°C to 70°C

📦 Features:
✔️ 3-to-8 line decoding in a single IC
✔️ Three enable inputs for easy expansion (4-to-16, 5-to-32)
✔️ Active-low outputs for system compatibility
✔️ High-speed Schottky TTL logic
✔️ Standard 16-pin DIP for breadboard and PCB

📦 Applications:
✔️ Memory address decoding (CPU/MPU systems)
✔️ Data routing and demultiplexing
✔️ Function generators
✔️ LED matrix scanning
✔️ 7-segment display control
✔️ Digital logic design and retro computing