AS7C256A-15TCN

Overview

The AS7C256A-15TCN is a 256 kbit (32K x 8) asynchronous static random-access memory manufactured by Alliance Memory. It operates within a voltage range of 4.5 V to 5.5 V, with a maximum supply current of 65 mA. The device features a 15 ns access time and utilizes a parallel interface. It is housed in a 28-pin TSOP I surface-mount package and supports commercial temperature operation from 0°C to +70°C.

Feature Summary

• Asynchronous parallel SRAM architecture for direct data access
• Single 5V power supply operation compatible with standard logic levels
• Surface-mount TSOP I packaging for compact circuit board integration

Applications

• Embedded systems requiring fast local data storage
• Industrial control units operating in commercial environments
• Consumer electronics utilizing 5V logic interfaces

Procurement Notes

Verify the specific suffix TCN confirms the TSOP I package and commercial temperature grade against official datasheets. Confirm RoHS compliance status and moisture sensitivity level requirements for your assembly process. Ensure voltage specifications match your system's 5V rail tolerance before procurement.

Selection Notes

Select this component when a 32K x 8 organization is required with 15 ns speed in a 28-pin surface-mount format. Compare against AS7C256A-10TIN if faster 10 ns access is needed, or AS7C256C-15PCN for through-hole DIP options. Verify that the 5V operating voltage aligns with your design constraints rather than 3.3V alternatives.

Part Context

This part belongs to the AS7C256A series of high-speed CMOS static RAMs. It serves as a non-volatile-free memory solution for temporary data buffering. The TSOP I package distinguishes it from newer TSOP II variants found in other Alliance Memory families.

Replacement Considerations

AS7C256A-15TIN is a verified pin-compatible alternative offering the same electrical characteristics in a TSSOP package.