71421SA55PF8

Overview

The Renesas Electronics Corporation 71421SA55PF8 is a dual-port static random-access memory (SRAM) integrated circuit. It features an asynchronous parallel interface with a storage capacity of 16Kb, organized as 2K x 8 bits. The device supports a supply voltage range of 4.5V to 5.5V and offers a maximum access time of 55 ns. It is housed in a 100-pin Thin Quad Flat Package (TQFP) and operates within a commercial temperature range of 0°C to 70°C.

Feature Summary

• Dual-port architecture enabling independent simultaneous access by two processors
• Asynchronous operation requiring no external clock signals
• Parallel data interface for standard system integration

Applications

• High-speed data buffering in telecommunications equipment
• Cache memory implementation in embedded processing systems
• Data storage in industrial control applications

Procurement Notes

This component is officially discontinued and no longer manufactured by Renesas Electronics Corporation. Verification of availability is restricted to existing stock or surplus channels only. Procurement requires confirmation of part authenticity and physical condition. Buyers must review end-of-life notices and ensure compliance with RoHS non-compliance status before acquisition.

Selection Notes

Engineers should evaluate the 71421SA55 series for legacy system maintenance where specific pinouts are required. Selection depends on verifying compatibility with existing 5V logic levels and 55 ns timing constraints. Designers must account for the discontinuation status when planning long-term production runs or replacement strategies.

Part Context

The 71421SA55PF8 belongs to the Renesas 71421SA family of dual-port SRAMs. This series provides high-performance memory solutions for applications requiring concurrent read/write operations from separate ports. The PF8 suffix specifically denotes the 100-pin TQFP surface-mount package configuration.

Replacement Considerations

• 71421LA20PFG