AS7C1024B-20TJCNTR

Overview

The AS7C1024B-20TJCNTR is a 1 Mbit asynchronous static random-access memory (SRAM) manufactured by Alliance Memory, Inc. It features a 128K x 8 bit organization and operates at a standard 5 V supply voltage with a maximum access time of 20 ns. The device is housed in a 32-pin TSOP II surface-mount package and is supplied in tape-and-reel format for automated assembly. It supports parallel interface communication and is designed for commercial temperature range applications.

Feature Summary

• Asynchronous operation with fast 20 ns access time
• Single 5 V power supply requirement
• Surface-mount TSOP II packaging for compact designs

Applications

• General-purpose data storage in embedded systems
• Cache memory buffers for microprocessors
• Industrial control system data logging

Procurement Notes

Verify the specific suffix TJCNTR confirms the tape-and-reel packaging variant rather than tube packaging. Confirm the 5V operating voltage aligns with your system design, as other variants may support 3.3V. Ensure the commercial temperature rating meets your environmental requirements before finalizing procurement.

Selection Notes

Select this component when a 1 Mbit capacity with 20 ns speed is required in a 32-pin TSOP II form factor. The tape-and-reel configuration is suitable for high-volume automated surface-mount assembly processes. Compare against 3.3V variants if lower power consumption is a priority over the standard 5V logic compatibility.

Part Context

This part belongs to the AS7C1024B series of 1 Mbit SRAMs from Alliance Memory. The 'T' indicates TSOP II packaging, 'J' denotes the pinout style, 'C' specifies commercial temperature range, and 'NTR' identifies the tape-and-reel shipping method. It is distinct from industrial grade or 3.3V versions within the same family.

Replacement Considerations

Direct substitutes include AS7C1024B-20TJIN for tube packaging or AS7C1024B-20TCNTR for alternative TSOP II sourcing. Verify pin compatibility and voltage levels when cross-referencing with other manufacturers' 128Kx8 SRAM devices.