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AS7C256B-15PIN

Name: AS7C256B-15PIN
Rating: 4.7 (12 reviews)

IC SRAM 256KBIT PARALLEL 28DIP

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規格

Part Status	Discontinued at Digi-Key
DigiKey Programmable	Not Verified
Memory Type	Volatile
Memory Format	SRAM
Technology	SRAM - Asynchronous
Memory Size	256Kbit
Memory Organization	32K x 8
Memory Interface	Parallel
Write Cycle Time - Word, Page	15ns
Voltage - Supply	4.5V ~ 5.5V
Operating Temperature	-40°C ~ 85°C (TA)
Mounting Type	Through Hole
Package / Case	28-DIP (0.300", 7.62mm)
Supplier Device Package	28-PDIP
Base Product Number	AS7C256
Access Time	15 ns

概述

Description

The AS7C256B-15PIN is a 256K-bit (32K x 8) static random-access memory (SRAM) chip, designed for high-speed memory applications. It operates with a supply voltage of 2.7V to 3.6V and features a fast access time of 15 nanoseconds, making it suitable for various electronic devices that require quick data retrieval and storage.
This SRAM is organized in a single 8-bit data bus configuration, allowing it to be easily integrated into systems requiring compact memory solutions. With low power consumption and a simple interface, the AS7C256B-15PIN is ideal for battery-operated devices and portable electronics.
The device utilizes a CMOS technology, providing high reliability and durability, and comes in a 15-pin dual in-line package (DIP), facilitating easy socket integration. Its design is optimized for applications such as telecommunications, networking, and consumer electronics, where performance and efficiency are critical.

Features

The AS7C256B-15PIN is a CMOS static RAM chip with the following key features:
1. Memory Capacity: 32 Kbit (4 K x 8 bits).
2. Access Time: 15 ns, ensuring fast read and write operations.
3. Power Supply: Operates at 3.0V to 3.6V, making it suitable for low-power applications.
4. Organization: 4 K x 8 bits, allowing efficient data storage and retrieval.
5. Packaging: Available in a 15-pin SOIC package, facilitating easy integration into various electronic designs.
6. Data Retention: Non-volatile, retaining data without power.
7. Power Consumption: Low standby and active current, ideal for battery-operated devices.
8. Asynchronous Operation: No clock required, allowing faster response times for read/write cycles.
These features make the AS7C256B-15PIN suitable for various applications, including consumer electronics, telecommunications, and industrial devices.

Package

The AS7C256B-15PIN is offered in a 28-pin DIP (Dual In-line Package) configuration, commonly used for its robustness and ease of handling in various electronic applications.

Pinout

The AS7C256B-15PIN is a 256K-bit (32K x 8) static RAM device. It has a total of 28 pins.
Pin Functions:
1. Address Inputs (A0-A14): 15 pins used for addressing the memory locations.
2. Data Inputs/Outputs (D0-D7): 8 pins for data input and output.
3. Chip Enable (CE): Activates the memory chip.
4. Output Enable (OE): Controls the output buffers for data reading.
5. Write Enable (WE): Controls the write operation; active low for writing data.
6. VCC: Power supply pin.
7. GND: Ground reference pin.
This device is used in various applications requiring volatile memory, such as digital signal processing, telecommunications, and consumer electronics.

Manufacturer

The AS7C256B-15PIN is manufactured by Alliance Memory, Inc. Alliance Memory is a semiconductor company that specializes in the design and production of memory solutions, particularly DRAM and SRAM products. The company focuses on providing high-quality, cost-effective memory components for various applications, including consumer electronics, telecommunications, and industrial equipment. Established to support the growing demand for memory products, Alliance Memory offers a range of solutions for both legacy and current memory needs, emphasizing reliability and performance in its offerings.

Application

The AS7C256B-15PIN is a 256Kb (32Kb x 8) SRAM device used in various applications, including telecommunications, networking equipment, automotive systems, consumer electronics, and industrial controls. It serves as cache memory, data buffering, and temporary storage in systems requiring fast access times and low latency. Its compact design and low power consumption make it suitable for portable devices and embedded systems.

Equivalent

The AS7C256B-15PIN is a 32K x 8 SRAM chip. Equivalent products include the IDT 70S256, Cypress CY7C256, and Microchip 23K256. Always verify datasheets for specific application requirements, such as access times, voltage levels, and pin configurations, to ensure compatibility.