AS7C256B-15PIN

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AS7C256B-15PIN

+БОМ

IC SRAM 256KBIT PARALLEL 28DIP

  • ПроизводительКомпания Alliance Memory, Inc.

  • Мфр. Часть #AS7C256B-15PIN

  • В наличии7848

365 Дни гарантии качества

7*24 часы обслуживания каранти

90-гарантия послепродажного дня

Гарантия подлинного продукта

Спецификации

Атрибут Ценность
Part Status Discontinued at Digi-Key
Digi Key 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

Обзор

Description

The AS7C256B-15PIN is a high-performance CMOS static RAM (SRAM) chip produced by Alliance Memory. It features a 32K x 8-bit memory configuration, offering a total of 256 Kb memory capacity. The "15PIN" denotes its 15 ns access time, making it suitable for applications requiring fast data retrieval and storage.
This SRAM is designed for easy integration into various electronic systems, thanks to its JEDEC-compliant pin configuration. It operates on a single 5V power supply and includes features such as low power consumption, typically in the range of microamps in standby mode, and high reliability suitable for industrial, automotive, and communications applications.
The AS7C256B-15PIN is versatile for use in cache memory, buffer storage, and as a component for storing firmware and application data in embedded systems. Its robust performance and wide availability make it a preferred choice for designers needing reliable SRAM solutions in their electronics projects.

Equivalent

The AS7C256B-15PIN is a 32K x 8-bit SRAM chip. Equivalent products include:
1. CY7C199D-15VXI (Cypress)
2. IS61C256AH-15N (ISSI)
3. HM62256ALP-15 (Hitachi)
4. W24257AS-15 (Winbond)
5. KM62256CLG-15 (Samsung)
These alternatives have similar configurations and performance specifications, making them suitable replacements. Always verify pin configurations and electrical characteristics to ensure compatibility.

Features

The AS7C256B-15PIN is a CMOS static RAM (SRAM) memory chip with the following key features:
1. Capacity: 32K x 8 bits, providing a total of 256 Kb of memory.
2. Access Time: Fast access time of 15 ns, suitable for high-speed applications.
3. Low Power Consumption: Designed for low power usage both during operation and standby modes.
4. Single 5V Supply: Operates with a single supply voltage of 5V ±10%.
5. TTL-Compatible Inputs and Outputs: Ensures compatibility with TTL logic levels.
6. Data Retention: Retains data with a 2V data retention voltage, ideal for battery-backed operations.
7. Package Options: Available in various package types, including DIP, SOP, and TSOP.
8. Operating Temperature Range: Typically supports a wide temperature range, suitable for commercial or industrial applications.
9. Easy Expansion: Supports easy memory expansion through common I/O and WE (write enable) control.
These features make the AS7C256B-15PIN a versatile and efficient choice for applications requiring reliable, high-speed memory.

Pinout

The AS7C256B-15PIN is a 32K x 8-bit high-performance CMOS static RAM. It has a total of 28 pins. The primary functions of these pins are as follows:
1. Address Pins (A0-A14): These 15 pins are used to specify the address of the memory location to be accessed.
2. Data Inputs/Outputs (I/O0-I/O7): These 8 pins are used for data input and output, allowing data to be read from or written to the memory.
3. Chip Enable (CE): This pin activates the chip when low, allowing access to the device's memory.
4. Write Enable (WE): This pin controls writing to the memory. When low, data is written to the memory location specified by the address pins.
5. Output Enable (OE): This pin controls the output buffer, enabling data to be read from the memory when low.
6. Power Supply (VCC): This pin provides the necessary power to the SRAM, typically 5V.
7. Ground (VSS): This pin is the ground reference for the device.
These pins collectively enable the AS7C256B-15PIN to perform its SRAM functions effectively.

Manufacturer

The AS7C256B-15PIN is manufactured by Alliance Memory, Inc. Alliance Memory is a company that specializes in providing legacy memory products, including SRAM, DRAM, and SDRAM. They focus on offering products that are used in a range of applications where older memory technologies are still required, such as in industrial, automotive, and telecommunications sectors. Alliance Memory is known for ensuring continued availability of these legacy memory components, which are often needed to support existing designs that rely on older memory technologies.

Application

The AS7C256B-15PIN is a high-speed CMOS static RAM chip, commonly used in applications requiring fast data access and storage. Key application areas include:
1. Embedded Systems: Provides temporary data storage for microcontrollers.
2. Industrial Control Systems: Supports real-time data processing and storage.
3. Communication Equipment: Used in routers and switches for quick data buffering.
4. Consumer Electronics: Powers fast operations in devices like printers and gaming consoles.
5. Medical Devices: Provides reliable storage for patient data in portable medical equipment.
Its speed and reliability make it suitable for applications requiring quick data retrieval and storage.

Package

The AS7C256B-15PIN is a 32K x 8 CMOS SRAM (Static Random Access Memory) chip. It typically comes in a DIP (Dual In-line Package) form factor, which is suitable for through-hole mounting on printed circuit boards. This package type is known for its ease of handling and soldering, making it ideal for prototyping and legacy systems.

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