71321LA55J

Memory IC Overview

The Renesas Electronics Corporation 71321LA55J is a high-speed static random access memory (SRAM) component belonging to the 71321LA55 series. It features a storage capacity of 16 kbit organized as 2k x 8 bits with an access time of 55 ns. The device operates on a parallel interface and requires a supply voltage between 4.5 V and 5.5 V, with a maximum power consumption of 140 mA. It supports an operating temperature range from -40°C to +85°C and is housed in a PLCC-52 surface-mount package.

Memory IC Feature Summary

• Dual-port asynchronous architecture enabling independent simultaneous read/write operations
• High-speed data transfer capabilities suitable for demanding processing applications
• Industrial-grade thermal stability ensuring reliable performance across wide temperature ranges

Memory IC Applications

• Embedded systems requiring fast local data buffering
• Network equipment cache memory modules
• Industrial control system data logging

Memory IC Procurement Notes

Verify component authenticity through authorized distributors due to potential counterfeit risks. Confirm RoHS compliance status and moisture sensitivity level before procurement. Check for specific ordering suffixes that may indicate packaging variations or lead-free specifications. Ensure compatibility with existing board designs regarding pinout and voltage requirements.

Memory IC Selection Notes

Evaluate the 55 ns access time against system timing constraints to ensure adequate performance margins. Compare power consumption figures with available cooling solutions for the target enclosure. Assess the PLCC-52 footprint availability against current PCB layout constraints. Consider end-of-life status when planning long-term production runs.

Memory IC Part Context

This component is part of Renesas' legacy SRAM portfolio, originally developed under IDT branding. It serves as a specialized memory solution for applications requiring dual-port functionality without complex arbitration logic. The device represents a mature technology node optimized for cost-effective integration in established industrial and communication hardware designs.

Memory IC Replacement Considerations

Direct substitutes include the 71321SA55JG8 and 71V321S55J. Verify pin compatibility and electrical specifications before substitution. Note that alternative packages such as TQFP may require adapter boards or redesign.