The DM74170N is a 4 x 4 Register File with Open Collector Outputs, manufactured by Rochester Electronics. As Rochester Electronics specializes in reproducing obsolete components, this part was originally produced by another manufacturer and is now being recreated to supply continued demand.

Applications:

• Scratchpad Memory: Temporarily storing data for quick access in CPUs and other digital systems.
• Lookup Tables: Implementing simple lookup functions by storing pre-calculated values.
• Data Buffering: Holding data between different processing stages to synchronize operations.
• Microprocessor Systems: Interfacing with microprocessors for data storage and retrieval.
• Control Systems: Storing control parameters and settings in industrial and automation equipment.

Features:

• 4 x 4 Register File: Contains four registers, each capable of storing 4 bits of data.
• Open Collector Outputs: Allows multiple devices to share a common bus.
• High-Speed Operation: Offers relatively fast access times for data storage and retrieval.
• Multiple Chip Select Inputs: Enables easy expansion of the register file.
• TTL Compatible: Interfaces directly with standard TTL logic circuits.

Benefits:

• Simplified System Design: Provides a convenient and compact storage solution.
• Increased System Performance: Enables fast data access for improved processing speed.
• Reduced Component Count: Integrates multiple registers into a single package.
• Enhanced System Flexibility: Offers multiple control inputs for versatile operation.
• Easy Integration: Compatible with widely used TTL logic families.

Additional Details:

The DM74170N is typically packaged in a 16-pin DIP (Dual In-line Package). It requires a 5V power supply for operation. The open collector outputs require external pull-up resistors to define the high logic level. The typical access time is in the range of tens of nanoseconds. It is a useful component for applications requiring small amounts of fast, temporary storage. Because Rochester Electronics manufactures this part, it is designed to be a drop-in replacement for the original component. Consult the datasheet for specific electrical characteristics, timing diagrams, and application notes.