Encyclopedia Entry: 71256S25DB

Product Information Overview

• Category: Integrated Circuit (IC)
• Use: Memory storage and retrieval
• Characteristics: High-speed, low-power consumption, compact design
• Package: Small Outline Integrated Circuit (SOIC)
• Essence: Efficient data storage and retrieval
• Packaging/Quantity: Individually packaged, quantity per package varies

Specifications

• Model Number: 71256S25DB
• Memory Capacity: 256 kilobits (32 kilobytes)
• Operating Voltage: 5V
• Access Time: 25 nanoseconds
• Interface: Parallel
• Operating Temperature Range: -40°C to +85°C
• Pin Count: 28

Detailed Pin Configuration

1. A0
2. A1
3. A2
4. A3
5. A4
6. A5
7. A6
8. A7
9. A8
10. A9
11. A10
12. A11
13. A12
14. A13
15. A14
16. /WE (Write Enable)
17. /OE (Output Enable)
18. Vcc (+5V Power Supply)
19. DQ0 (Data Input/Output 0)
20. DQ1 (Data Input/Output 1)
21. DQ2 (Data Input/Output 2)
22. DQ3 (Data Input/Output 3)
23. DQ4 (Data Input/Output 4)
24. DQ5 (Data Input/Output 5)
25. DQ6 (Data Input/Output 6)
26. DQ7 (Data Input/Output 7)
27. GND (Ground)
28. NC (No Connection)

Functional Features

• High-speed data access and retrieval
• Low power consumption for energy efficiency
• Compact design for space-saving integration
• Reliable data storage and retention
• Easy integration with parallel interface systems

Advantages and Disadvantages

Advantages: - Fast access time enhances system performance - Low power consumption reduces energy costs - Compact size allows for efficient use of limited space - Reliable data storage ensures data integrity - Compatibility with parallel interface systems simplifies integration

Disadvantages: - Limited memory capacity compared to newer models - Requires a 5V power supply, which may not be compatible with all systems - Not suitable for applications requiring high-speed serial data transfer

Working Principles

The 71256S25DB is a memory integrated circuit that utilizes static random-access memory (SRAM) technology. It stores and retrieves digital data using an array of flip-flops, allowing for fast and random access to stored information. The IC operates by applying the appropriate address signals to select the desired memory location and enabling read or write operations through control signals (/OE and /WE). The data is then transferred via the parallel interface.

Detailed Application Field Plans

The 71256S25DB is commonly used in various electronic devices and systems that require reliable and fast data storage and retrieval. Some application fields include:

1. Computer Systems:

   • Cache memory
   • Buffer memory
   • System memory expansion

2. Communication Equipment:

   • Network routers
   • Switches
   • Data storage devices

3. Industrial Control Systems:

   • Programmable logic controllers (PLCs)
   • Robotics
   • Automation systems

4. Consumer Electronics:

   • Printers
   • Set-top boxes
   • Gaming consoles

Detailed and Complete Alternative Models

1. 71256S20DB: Similar to 71256S25DB, but with a faster access time of 20 nanoseconds.
2. 71256S32DB: Higher capacity version with 32 kilobits (4 kilobytes) of memory.
3. 71256S40DB: Higher capacity version with 40 kilobits (5 kilobytes) of memory and a slower access time of 40 nanoseconds.

(Note: The above alternative models are for illustrative purposes only and may not represent actual existing products.)

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Word Count: 550 words