7140LA25J8

Overview

The Renesas Electronics Corporation 7140LA25J8 is an asynchronous dual-port static random-access memory (SRAM) IC. It provides a storage capacity of 8 kilobits, organized as 1K words by 8 bits. The device features parallel interface access with a maximum access time of 25 nanoseconds. It operates within a supply voltage range of 4.5V to 5.5V and supports surface-mount installation in a 52-PLCC package measuring 19.13x19.13 mm. The component functions within a commercial temperature range of 0°C to 70°C.

Feature Summary

• Dual-port architecture enabling independent simultaneous access from two distinct processors or systems
• Asynchronous operation allowing flexible timing control without external clock synchronization
• CMOS technology providing high-speed data transfer capabilities for embedded applications

Applications

• High-speed data buffering between asynchronous logic blocks
• Cache memory implementation in microprocessor-based systems
• Data logging and temporary storage in industrial control units

Procurement Notes

Verify component authenticity through authorized channels due to discontinuation status. Confirm RoHS compliance requirements as the part may not meet current environmental standards. Validate package integrity and pin alignment against the 52-PLCC specification before integration into printed circuit board assemblies.

Selection Notes

Evaluate system timing constraints to ensure the 25 ns access speed meets performance requirements. Verify power supply stability within the 4.5V to 5.5V range to prevent operational errors. Consider the 52-PLCC footprint compatibility during PCB layout design and assess thermal management needs for the specified operating temperature range.

Part Context

This component belongs to the 7140 series of dual-port SRAMs manufactured by Renesas Electronics. It is designed to function as a slave device when paired with master dual-port RAM components like the 7130 series. The series utilizes CMOS technology to deliver high-speed memory solutions for complex digital systems requiring concurrent data access.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Due to the discontinued status of this specific model, engineers must consult official manufacturer resources or authorized distributors for validated equivalent replacements that match the electrical and physical specifications.