AS7C256A-20TINTR

Overview

The AS7C256A-20TINTR is a 256 Kbit (32K x 8) asynchronous static random-access memory (SRAM) manufactured by Alliance Memory. It operates on a single 5V power supply with a voltage range of 4.5V to 5.5V and features a maximum access time of 20 ns. The device utilizes a parallel interface and is housed in a 28-pin TSOP I surface-mount package. Designed for industrial applications, it supports an operating temperature range from -40°C to +85°C.

Feature Summary

• Asynchronous parallel SRAM architecture
• Industrial temperature rating (-40°C to +85°C)
• Single 5V power supply operation

Applications

• Industrial control systems
• Embedded data storage
• Automotive electronics

Procurement Notes

Verify the suffix 'TR' indicates tape-and-reel packaging rather than tray format. Confirm RoHS compliance status and moisture sensitivity level (MSL 3) requirements during handling. Ensure the 28-TSOP I footprint matches the target PCB design. Validate that the 5V logic levels are compatible with the host system interface.

Selection Notes

Select this component when a 32K x 8 organization is required with 20 ns speed at 5V. Compare against AS7C256A-10TIN for faster performance or AS7C3256A-20TIN for 3.3V operation. Consider the TSOP I package constraints for board space. Verify current consumption specifications against power budget limits.

Part Context

This part belongs to the AS7C256A series of CMOS SRAMs. It shares the 32K x 8 density with variants like AS7C256A-10TIN but differs in access speed and packaging style. The TR suffix specifically denotes the reel packaging method used for automated assembly processes.

Replacement Considerations

AS7C256A-20TIN is a direct functional substitute differing only in tray packaging instead of tape-and-reel.