The DM74S288AN is a 256-Bit (32 x 8) Schottky Programmable Read-Only Memory (PROM) manufactured by National Semiconductor (now Texas Instruments). It's designed for applications needing non-volatile data storage with fast access times. This PROM allows for data to be written once, making it suitable for storing firmware, look-up tables, and other fixed data in digital systems.

Applications

• Microcontroller firmware storage
• Look-up tables
• Character generators
• Code converters
• Sequence generators

Features

• 256-Bit (32 x 8) Memory: Stores 32 bytes of data.
• Schottky TTL Technology: Provides faster access times compared to standard TTL.
• Programmable: Data can be written once by blowing fuses.
• Fast Access Time: Enables quick access to stored data.
• TTL Logic: Compatible with other TTL devices.
• DIP Package: Easy to use with breadboards and prototyping boards.

Benefits

• Permanent Data Storage: Ensures data retention even when power is removed.
• Fast Data Retrieval: Provides quick access to stored data, improving system performance.
• Easy Programming: Simple to program using commercially available PROM programmers.
• Reliable Operation: Offers stable performance in various environments.
• Simple Implementation: Simplifies the design of digital systems requiring permanent data storage.

Additional Details

The DM74S288AN, utilizing Schottky TTL technology, offers improved speed performance compared to earlier PROM devices. Programming is achieved by selectively blowing internal fuses using a PROM programmer. The device has address inputs to select one of the 32 memory locations and output pins to provide the 8-bit data. It is important to note that due to its age and the availability of more modern memory solutions, the DM74S288AN is considered an END-OF-LIFE component, potentially limiting sourcing options. The supply voltage is typically 5V. The package is a 16-pin DIP (Dual In-line Package).