AS7C1025B-12JCNTR

Overview

The AS7C1025B-12JCNTR is a 1 Mbit (128K x 8) asynchronous static random-access memory (SRAM) manufactured by Alliance Memory, Inc. It operates within a supply voltage range of 4.5 V to 5.5 V and features a maximum access time of 12 ns. The device utilizes a parallel interface and is housed in a 32-pin Small Outline J-Lead (SOJ) package with surface-mount installation. It supports Single Data Rate (SDR) storage type and functions within a commercial temperature range of 0°C to +70°C. Maximum power consumption current is specified at 100 mA.

Feature Summary

• Asynchronous operation with fast 12 ns access time for efficient data retrieval
• Single Data Rate (SDR) architecture supporting standard parallel interface protocols
• Center power pin configuration designed to reduce noise and improve signal integrity
• RoHS compliant construction suitable for modern electronic assembly requirements

Applications

• Industrial control systems requiring non-volatile-like persistence during power cycles
• Embedded computing modules utilizing 5V logic families
• Consumer electronics hardware with commercial temperature constraints
• Automotive infotainment subsystems operating within defined thermal limits

Procurement Notes

Verify the specific suffix 'TR' confirms tape-and-reel packaging rather than tube format when reviewing distributor listings. Confirm RoHS compliance status directly through official datasheets as regulatory standards evolve. Ensure the 32-SOJ footprint matches the target PCB design constraints. Validate that the 12 ns speed grade meets system timing requirements before finalizing procurement orders.

Selection Notes

Select this component when a 5V asynchronous SRAM with 128K x 8 organization is required. The SOJ-32 package suits applications needing robust surface-mount connectivity. Consider the 12 ns access speed against system clock frequencies. Verify thermal management capabilities align with the 0°C to +70°C commercial operating range for the intended environment.

Part Context

This part belongs to the AS7C1025B series of high-speed asynchronous SRAMs from Alliance Memory. It serves as a direct replacement for legacy IDT/Renesas devices like the 71124S15 series, offering comparable functionality in a 32-pin SOJ package. The series is designed for general-purpose memory applications where fast random access is critical.

Replacement Considerations

Alliance Memory lists AS7C1025B-15JCNTR and AS7C1025B-15JINTR as alternative variants within the same family. These substitutes offer a slower 15 ns access time but maintain identical pinouts and electrical characteristics otherwise.