AS7C3256-20JC

Memory IC Overview

The AS7C3256-20JC is a 256 Kbit (32K x 8) asynchronous static random-access memory (SRAM) manufactured by Alliance Memory. It operates with a maximum access time of 20 ns and supports a parallel interface. The device functions within a supply voltage range of 4.5 V to 5.5 V, with a maximum power supply current of 100 mA. It is housed in a 36-pin Small Outline J-Lead (SOJ) package designed for surface-mount installation. The component is rated for commercial operating temperatures between 0°C and +70°C.

Memory IC Feature Summary

• Provides non-volatile data retention without requiring refresh cycles typical of dynamic memory.
• Features a standard parallel interface for direct connection to microprocessors and controllers.
• Utilizes a 36-pin SOJ package suitable for space-constrained surface-mount applications.

Memory IC Applications

• Embedded systems requiring fast local data storage
• Industrial control units needing reliable buffer memory
• Consumer electronics utilizing 5V logic interfaces

Memory IC Procurement Notes

Verify the specific pin count and package type against your schematic, as datasheets often list this series in both 28-pin and 36-pin variants. Confirm the voltage tolerance matches your system's 5V rail precisely. Check for moisture sensitivity labeling if reflow soldering is required. Ensure the industrial or commercial temperature grade meets your environmental constraints before finalizing the order.

Memory IC Selection Notes

Select this part when a 5V supply is mandatory and a 20 ns access speed is sufficient for the application. Compare against the AS7C3256A series if a lower 3.3V operation is needed instead. Consider the SOJ-36 footprint availability in your PCB layout tools. Evaluate the 100 mA active current consumption against your thermal management capabilities.

Memory IC Part Context

This component belongs to the AS7C3256 family of high-speed SRAMs from Alliance Memory. It shares architectural similarities with other members like the AS7C3256A but differs in voltage requirements and packaging options. The series is designed for general-purpose memory buffering and cache applications where low latency is critical.

Memory IC Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with generic 32Kx8 5V SRAMs only after confirming pinout and electrical specifications match exactly.