74LS112 Dual JK Flip‑Flop IC DIP‑16

The 74LS112 is a dual JK flip‑flop with asynchronous Set and Reset inputs, housed in a through‑hole DIP‑16 package. Part of the 74LS TTL logic family, it delivers high‑speed, reliable switching for digital designs, making it ideal for counters, dividers, and edge‑triggered storage in microcontroller projects, Arduino prototypes, and Raspberry Pi interfaces (with level shifting for 3.3 V systems). This versatile device can be wired to emulate a D‑type flip‑flop for data latching applications.

Key Features ✅

• Dual JK flip‑flop design 🧩: Implement toggle (T), JK, or D‑type behavior by wiring J and K appropriately.
• Asynchronous Set and Reset 🔁: Provides flexible initialization and control of output states.
• DIP‑16 package 📦: Breadboard‑friendly and easy to integrate into a wide range of electronics modules and prototypes.
• High‑speed 74LS TTL performance ⚡: Suitable for timing‑critical digital logic functions.
• 5 V logic compatibility 🔌: Operates from standard TTL voltage levels; interfaces directly with 5 V Arduino boards. Use level shifting when interfacing with Raspberry Pi (3.3 V).

Technical Specifications 🧾

• Product Type: Integrated Circuit
• Logic Type: 74LS Dual JK Flip‑Flop (configurable as D‑type)
• Package Type: DIP‑16 (through‑hole)
• Operating Temperature: −55 to 125 °C
• Supply Voltage: 4.75 to 5.25 V

Applications 🎯

The 74LS112 is well‑suited for a variety of digital logic tasks in both educational and professional designs:

• Counters and dividers (e.g., divide‑by‑2 toggle stages)
• Shift registers and state machines
• Data storage and transfer for edge‑triggered latching
• Frequency dividers and binary counters

Design Tips 💡

• To emulate a D‑type flip‑flop, drive J = D and K = ¬D (via an inverter).
• Place a 0.1 μF decoupling capacitor close to the IC’s VCC and GND pins for stable operation.
• Ensure all inputs are at valid TTL levels; use level shifters when interfacing 3.3 V systems like Raspberry Pi.