7008L12JI8

Memory IC Overview

The Renesas 7008L12JI8 is a high-speed 512Kbit (64K x 8) dual-port static RAM featuring asynchronous parallel interfaces. It operates within a 4.5V to 5.5V supply voltage range and supports an access time of 12ns. The device utilizes an 84-pin PLCC package with J-leads, measuring 29.31x29.31mm. It functions across an industrial temperature range of -40°C to +85°C and includes automatic power-down capabilities controlled by chip enable signals for low standby power.

Memory IC Feature Summary

• True dual-ported memory cells allow simultaneous independent reads and writes from either port without conflict.
• On-chip hardware support for semaphore signaling enables efficient data synchronization between ports.
• Automatic power-down feature reduces standby current when chip enable signals are inactive.
• TTL-compatible single 5V power supply simplifies integration into standard logic systems.

Memory IC Applications

• High-speed data buffering in telecommunications equipment
• Cache memory implementation in embedded processing systems
• Network switch packet storage and forwarding engines
• Industrial control system data logging and temporary storage

Memory IC Procurement Notes

Verify component authenticity through authorized distributors due to end-of-life status. Confirm RoHS3 compliance and moisture sensitivity level 3 handling requirements during assembly. Check for specific packaging variations such as tape-and-reel quantities versus trays. Ensure replacement parts match the exact 12ns speed grade and 84-PLCC footprint to maintain board compatibility.

Memory IC Selection Notes

Select this component when simultaneous bidirectional data access is required without external arbitration logic. The 12ns speed grade suits applications needing faster throughput than standard 20ns variants. Consider the 84-PLCC package for legacy socketed designs or specific thermal constraints. Evaluate power consumption needs against the automatic power-down feature benefits for battery-backed or energy-sensitive deployments.

Memory IC Part Context

This part belongs to the IDT/Renesas 7008 series of dual-port SRAMs, designed for high-performance memory applications requiring independent port access. The series offers various speed grades and package options to accommodate different system timing and physical layout requirements. It serves as a critical interface buffer in complex digital systems where data integrity and speed are paramount.

Memory IC Replacement Considerations

Direct substitutes include other 7008 series variants with matching 12ns speed and 84-PLCC package, such as IDT7008L12J. Verify pinout compatibility and electrical specifications before substitution. Cross-reference with Renesas official obsolescence notices for approved alternative components.

Memory IC FAQ

Does the 7008L12JI8 support simultaneous reads from both ports?

Yes, it features true dual-ported memory cells that allow simultaneous independent reads and writes from either port without internal conflict.

What is the power supply requirement for this SRAM?

The device requires a single TTL-compatible 5V power supply, operating within a range of 4.5V to 5.5V.

How does the device manage power consumption during idle periods?

It includes an automatic power-down feature controlled by the chip enable signal, allowing the on-chip circuitry to enter a very low standby power mode.