Encyclopedia Entry: 71256L85DB

Product Information Overview

Category: Integrated Circuit (IC)

Use: The 71256L85DB is a high-speed static random-access memory (SRAM) IC. It is commonly used in electronic devices that require fast and temporary data storage, such as computers, servers, and networking equipment.

Characteristics: - High-speed operation - Low power consumption - Large storage capacity - Reliable data retention - Easy integration into existing circuitry

Package: The 71256L85DB is typically available in a dual in-line package (DIP), which consists of a rectangular plastic body with two parallel rows of pins for connection to a circuit board.

Essence: This IC serves as a volatile memory component, allowing for quick read and write operations. It stores data using a network of transistors and capacitors, ensuring rapid access times.

Packaging/Quantity: The 71256L85DB is usually sold in reels or trays containing multiple units. The exact quantity may vary depending on the manufacturer and supplier.

Specifications

• Storage Capacity: 256 kilobits (32 kilobytes)
• Access Time: 85 nanoseconds
• Operating Voltage: 5 volts
• Operating Temperature Range: -40°C to +85°C
• Pin Count: 28

Detailed Pin Configuration

The 71256L85DB features 28 pins, each serving a specific function. Here is a detailed pin configuration:

1. Address Inputs (A0-A14): These pins receive the address signals to specify the memory location for read or write operations.
2. Data Inputs/Outputs (DQ0-DQ7): These pins transmit the data to be written into the memory or retrieve the stored data during read operations.
3. Chip Enable (CE): This pin enables or disables the memory chip.
4. Output Enable (OE): This pin controls the output buffer, allowing or preventing data from being read out.
5. Write Enable (WE): This pin enables or disables write operations to the memory.
6. Power Supply (Vcc) and Ground (GND): These pins provide the necessary power and ground connections for the IC.

Functional Features

• High-speed operation: The 71256L85DB offers fast access times, allowing for efficient data retrieval and storage.
• Low power consumption: This IC is designed to minimize power usage, making it suitable for battery-powered devices.
• Reliable data retention: The stored data remains intact even when power is disconnected.
• Easy integration: The IC can be easily incorporated into existing circuitry due to its standard pin configuration and compatibility with common interface protocols.

Advantages and Disadvantages

Advantages: - Fast access times enhance overall system performance. - Low power consumption prolongs battery life in portable devices. - Reliable data retention ensures data integrity. - Easy integration simplifies circuit design and manufacturing processes.

Disadvantages: - Limited storage capacity compared to other memory technologies. - Relatively higher cost per unit compared to alternative memory options.

Working Principles

The 71256L85DB utilizes a static random-access memory design, which relies on flip-flops to store each bit of data. It employs a combination of transistors and capacitors to create stable memory cells that retain data as long as power is supplied. The address inputs select the desired memory location, while the control signals (CE, OE, WE) regulate read and write operations.

Detailed Application Field Plans

The 71256L85DB finds applications in various electronic systems, including: - Personal computers - Servers - Networking equipment - Printers - Industrial control systems - Communication devices

Detailed and Complete Alternative Models

• 61128L85DB: Similar to the 71256L85DB, but with a lower storage capacity of 128 kilobits.
• 71512L85DB: Offers increased storage capacity of 512 kilobits while maintaining the same access time and pin configuration.
• 721024L85DB: Provides a larger storage capacity of 1 megabit, suitable for more demanding applications.

These alternative models offer different storage capacities to cater to diverse memory requirements.

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