7005S15JI8

Overview

The Renesas Electronics Corporation 7005S15JI8 is a high-speed, asynchronous dual-port static random-access memory (SRAM) with a density of 64 kilobits. The device features an 8K x 8 organization and supports simultaneous independent access from two ports. It operates on a single 5V power supply with a voltage range of 4.5V to 5.5V. The component provides a maximum access time of 15 nanoseconds and includes built-in hardware support for semaphore signaling and interrupt flags. It is designed for applications requiring full-speed data exchange between processors without bus contention.

Feature Summary

• True dual-ported memory architecture enabling simultaneous reads and writes from independent ports
• On-chip hardware arbitration logic supporting master/slave configurations and semaphore signaling
• Asynchronous operation compatible with TTL-level I/O standards
• Automatic power-down feature controlled by chip enable inputs for low standby current

Applications

• High-speed data buffering in multi-processor systems
• Master/Slave dual-port RAM configurations for 16-bit or wider word systems
• Real-time communication interfaces requiring non-blocking data transfer
• Industrial control systems utilizing asynchronous parallel memory

Procurement Notes

Verify the exact suffix designation against official Renesas documentation, as variations such as J8 or JI8 may indicate specific package types or temperature ranges. Confirm RoHS compliance status and moisture sensitivity levels prior to integration. Check for obsolescence notices or lifecycle changes, as this component family has faced discontinuation risks. Ensure supply chain sources provide valid traceability and authenticity guarantees for legacy semiconductor parts.

Selection Notes

Select this component when a system requires true dual-port capability with hardware-managed arbitration rather than software-controlled sharing. The 15ns access speed suits moderate-to-high frequency asynchronous interfaces. Consider the 68-pin PLCC package availability if surface-mount constraints allow. Evaluate power consumption requirements against the automatic power-down capabilities. Compare against other 7005 series variants if different access times or package formats are needed.

Part Context

The 7005 series represents a family of high-speed dual-port SRAMs manufactured by Renesas Electronics, formerly Intersil and Harris Semiconductor. These devices are engineered for applications demanding concurrent access from multiple masters. The 7005S15 variant specifically denotes the 15-nanosecond access time within the synchronous/asynchronous asynchronous dual-port lineup. This series is widely recognized in industrial and telecommunications equipment for its robust arbitration features.

Replacement Considerations

Direct replacements include other members of the 7005S family with identical pinouts and functionality but different access speeds, such as the 7005S25 or 7005S35. Verify that substitute parts maintain the same 68-pin PLCC package and 5V operating voltage. Cross-reference with IDT-branded equivalents if sourcing from distributors listing historical part numbers.