74ls161 dip ic

🔹 74LS161 DIP IC – Synchronous 4-Bit Binary Counter (SN74LS161N)

The SN74LS161N is a synchronous, presettable 4-bit binary counter featuring an internal carry look-ahead for high-speed counting applications. It includes an asynchronous master reset (Clear) and synchronous load capability, making it a standard choice for digital counting, frequency division, and memory addressing.

✅ Specifications:

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

• Package: 16-pin DIP (PDIP)

• Supply Voltage: 4.75V – 5.25V

• Count Rate: 25 MHz (typical)

• Propagation Delay: ~20 ns

• Trigger Type: Positive Edge (Rising Edge)

• Reset Type: Asynchronous (Clear)

• Output Current: 8mA (Low), -400µA (High)

• Operating Temperature: 0°C to 70°C

📦 Features:
✔️ Synchronous 4-bit binary counting (Modulo 16)
✔️ Internal carry look-ahead for fast counting
✔️ Asynchronous Master Reset (Clear) overrides all inputs
✔️ Synchronously programmable (parallel load)
✔️ Ripple Carry Output for easy n-bit cascading
✔️ Fully buffered inputs to minimize loading

📦 Applications:
✔️ Digital counters and frequency dividers
✔️ Memory address generation
✔️ Event counting and timing circuits
✔️ Cascaded multi-digit counting systems
✔️ Microprocessor peripheral logic