71342LA70JI8

Overview

The Renesas Electronics Corporation 71342LA70JI8 is a high-speed dual-port static random-access memory (SRAM) device. It features a storage capacity of 32 kilobits, organized as 4K words by 8 bits. The component utilizes an asynchronous parallel interface with a maximum access time of 70 nanoseconds. It operates on a single 5V power supply within a voltage range of 4.5V to 5.5V. The device is housed in a 52-lead Plastic Leadless Chip Carrier (PLCC) package designed for surface-mount installation. It supports industrial temperature ranges and includes automatic power-down capabilities controlled by chip enable signals.

Feature Summary

• True dual-port architecture allowing simultaneous independent access to the same memory location from both ports without hardware arbitration.
• Asynchronous operation mode providing flexible timing control for system integration.
• Automatic power-down feature that reduces standby power consumption when chip enables are inactive.
• TTL-compatible logic levels simplifying interface design with standard digital components.

Applications

• High-speed data buffering in communication systems requiring low-latency access.
• Real-time processing units where simultaneous read/write operations are critical.
• Industrial equipment controllers needing reliable volatile memory storage.
• Embedded systems utilizing external memory expansion via parallel interfaces.

Procurement Notes

Verify component authenticity through authorized channels due to potential availability constraints. Confirm package integrity and lead condition upon receipt. Check for RoHS compliance status relative to specific project requirements. Ensure proper handling procedures are followed to prevent electrostatic discharge damage during installation. Validate electrical parameters against current datasheet specifications before final integration.

Selection Notes

Evaluate system timing requirements against the 70ns access specification. Assess power budget constraints considering active and standby current characteristics. Verify physical footprint compatibility with existing PCB layouts using the 52-PLCC dimensions. Consider thermal management needs based on operating temperature ranges. Compare performance metrics with alternative dual-port SRAM options if higher speeds or different organizations are required.

Part Context

This component belongs to the Renesas 7134 series of dual-port SRAMs, designed for applications demanding concurrent port access. The LA suffix typically denotes specific speed grades and packaging variations within this family. These devices are engineered to eliminate wait states in high-performance computing environments. The series supports various package types including PLCC and LCC formats to accommodate diverse mounting preferences.

Replacement Considerations

Direct substitutes include other 7134 series variants such as 7134SA70J or 7134LA70JI8, provided pinouts and electrical characteristics match. Verify package type equivalence between PLCC and LCC options if mechanical changes are acceptable. Cross-reference speed grades to ensure timing requirements are met. Consult manufacturer documentation for detailed cross-referencing guidelines and functional compatibility matrices.