Product Overview: SN7489N Memory IC
The SN7489N is a classic memory integrated circuit (IC) produced by Texas Instruments (TI), a leader in semiconductor design and manufacturing. This particular chip is a 64-bit random access memory (RAM) organized as 16 words by 4 bits, which was widely used in digital systems and early computing devices. The SN7489N is part of the 7400 series of TTL (Transistor-Transistor Logic) logic chips, known for their reliability and ease of use.
Key Features
- Memory Configuration: The SN7489N provides a total of 64 bits of RAM, arranged in a 16x4 configuration. This means there are 16 memory locations, each able to store a 4-bit word.
- Logic Family: As a member of the 7400 TTL series, the SN7489N operates with the speed and compatibility expected from TTL logic devices.
- Package Type: This IC is available in a standard 16-pin plastic DIP (Dual In-line Package), which is suitable for through-hole mounting, making it easy to integrate into a wide range of electronic circuits.
- Operating Voltage: The typical operating voltage for the SN7489N is 5V, which is standard for TTL devices, ensuring compatibility with other TTL logic components.
- Access Time: The SN7489N offers fast access times, allowing for quick data retrieval, which is crucial for efficient operation in computing and digital systems.
Applications
The SN7489N was historically used in a variety of applications, including early computers, industrial control systems, and any digital circuit requiring temporary data storage. Its robust design and straightforward interface made it a favored choice for memory applications where small amounts of RAM were sufficient.
Quality and Support
As with all Texas Instruments products, the SN7489N is manufactured to high-quality standards. TI provides comprehensive technical support and documentation for their products, ensuring that designers and engineers can make the most of this IC in their projects. Whether for repair of vintage equipment or educational purposes, the SN7489N remains an iconic example of early semiconductor memory technology.
