7005L17J

Overview

The Renesas 7005L17J is a high-speed, asynchronous dual-port static random-access memory (SRAM) with a storage capacity of 64 kilobits. The memory organization is structured as 8K words by 8 bits. It features a parallel interface and supports simultaneous independent access from two ports. The device operates within a supply voltage range of 4.5V to 5.5V. The maximum access time is specified at 17 nanoseconds. It is housed in a 68-pin Plastic Leaded Chip Carrier (PLCC) package with J-leads. The component is rated for an industrial operating temperature range of 0°C to +70°C.

Feature Summary

• True dual-ported architecture enabling simultaneous reads and writes from independent ports without bus contention.
• On-chip hardware support for semaphore signaling and port arbitration logic to manage data integrity.
• Automatic power-down feature controlled by chip enable inputs to minimize standby power consumption.
• TTL-compatible single 5V power supply operation with battery backup capability for data retention.

Applications

• Stand-alone 64K-bit dual-port RAM systems
• Master/Slave dual-port configurations for 16-bit or wider word systems
• Real-time control applications requiring high-speed data buffering
• Industrial automation systems with strict timing requirements

Procurement Notes

Verify the specific suffix 'J' confirms the 68-pin PLCC package variant. Confirm RoHS compliance status as older variants may not meet current environmental standards. Check for end-of-life notifications or obsolescence warnings prior to finalizing procurement plans. Ensure the supplier provides valid traceability documentation for military or industrial grade specifications if required.

Selection Notes

Select this component when simultaneous independent access to shared memory is critical. The 17ns speed suits moderate-to-high frequency asynchronous interfaces. Consider the 68-pin PLCC package constraints for PCB layout. Evaluate alternative speeds like 15ns or 20ns if system timing margins allow. Verify that the 5V logic levels match the interfacing microcontroller or processor I/O standards.

Part Context

The 7005 series represents a family of high-speed dual-port SRAMs designed for flexible system integration. This specific model belongs to the L-series, indicating commercial temperature ratings. The 7005 series allows expansion of data bus widths beyond 8 bits by combining multiple units. It serves as a bridge between different processing domains requiring low-latency data exchange.

Replacement Considerations

Public confirmed substitute part numbers include IDT7005L17J. Cross-reference pinouts and electrical characteristics carefully before substitution. Verify package dimensions and lead pitch compatibility during replacement planning.