74ls189 dip ic

74LS189 – 64-Bit Random Access Memory (RAM) IC – DIP Package

The 74LS189 is a high-speed 64-bit random access memory (RAM) IC organized as 16 words by 4 bits. It features tri-state outputs, making it suitable for bus-oriented systems and easy interfacing with microcontrollers, digital circuits, and TTL logic devices.

🔧 Specifications:

• IC Type: 74LS189

• Function: 64-bit RAM (16 x 4 organization)

• Logic Family: LS TTL

• Supply Voltage (Vcc): 4.75V – 5.25V

• Package: DIP (Dual In-line Package)

• Outputs: Tri-state for bus compatibility

• Access Time: Fast, low-power LS technology

✅ Features:

• Organized as 16 x 4-bit storage

• Directly compatible with TTL logic

• Tri-state outputs for easy bus interfacing

• Ideal for memory storage, buffering, and addressable data handling

📦 Applications:

• Memory expansion in digital systems

• Microcontroller / microprocessor interfacing

• Educational and prototyping projects

• Retro computing and logic circuit design