AS7C256B-15PIN

Overview

The AS7C256B-15PIN is a 256 Kbit (32K x 8) asynchronous static random-access memory (SRAM) manufactured by Alliance Memory. It operates on a single 5 V power supply with a voltage range of 4.5 V to 5.5 V and features a maximum access time of 15 ns. The device utilizes a common I/O interface and is housed in a 28-pin Dual In-line Package (PDIP). It supports through-hole mounting and is designed for commercial temperature applications, operating within a range of 0°C to +70°C.

Feature Summary

• High-performance CMOS technology for low power consumption
• Asynchronous parallel interface with common I/O configuration
• Single 5 V supply operation

Applications

• Embedded systems requiring fast data storage
• Industrial control equipment
• Consumer electronics devices

Procurement Notes

Verify the package type matches your PCB footprint, as this component uses a 28-pin PDIP. Confirm the voltage requirements align with your system's 5 V logic levels. Check for RoHS compliance status if environmental regulations apply to your manufacturing process. Ensure the commercial temperature rating suits your operational environment.

Selection Notes

Select this part when a 256 Kbit capacity and 15 ns speed are required in a through-hole DIP package. Compare against the AS7C256A series for alternative pinouts or speeds. Consider surface-mount options like TSOP if board space is limited. Verify that the 5 V logic compatibility meets your microcontroller or processor interface standards.

Part Context

This component belongs to the AS7C256 family of SRAMs from Alliance Memory. It shares the same memory organization and core functionality as other variants in the series but differs in package style and specific electrical characteristics. The 'B' suffix typically denotes a specific generation or revision within the product line.

Replacement Considerations

Direct substitutes include other AS7C256B variants with different access times or packages, such as AS7C256B-12PIN. Cross-brand replacements require verifying pin compatibility and electrical specifications.