Description
Description
The 74189 is a 64-bit static random access memory (SRAM) integrated circuit organized as 16 words 4 bits. It provides fast asynchronous read and write operations, making it suitable for temporary data storage in digital systems. Built using TTL logic, the device operates on a standard 5V supply and offers tri-state outputs for direct bus interfacing. The 74189 is widely used in educational digital electronics, legacy computing systems, register storage, and small memory applications.
Features
- 64-bit static RAM storage
- Memory organization: 16 words 4 bits
- Fast asynchronous read/write operation
- Direct binary address access
- Tri-state outputs for bus interfacing
- TTL logic compatibility
- Standard 5V supply operation
- High-speed data access
- Suitable for register and buffer storage
- DIP-16 through-hole package
- Easy breadboard integration
- Reliable static memory retention while powered
- Useful for educational digital circuits
- Legacy memory system compatibility
Specifications
- Model: 74189
- Memory Type: Static RAM (SRAM)
- Memory Capacity: 64 bits
- Memory Organization: 16 words 4 bits
- Supply Voltage: 5V
- Logic Family: TTL
- Access Type: Asynchronous
- Output Configuration: Tri-State
- Address Lines: 4
- Data Width: 4 bits
- Read/Write Control: Supported
- Access Time (Typical): 35ns
- Operating Temperature Range: 0C to +70C
- Package Type: 16-Pin DIP
- Mounting Type: Through-Hole
- Application Type: Temporary Digital Storage
Links
- 3D Model
- Datasheet
Tutorials
- Programming the 74LS189 64-Bit RAM
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