71V3558SA133BQGI8

Overview

The 71V3558SA133BQGI8 is a synchronous single data rate zero bus turnaround SRAM manufactured by Renesas Electronics. It features a memory organization of 256K x 18, providing a total capacity of 4.5 Mbit. The device supports a maximum clock frequency of 133 MHz with an access time of 4.2 ns. It operates within a supply voltage range of 3.135 V to 3.465 V and utilizes a parallel interface. The component is housed in a 165-CABGA package measuring 13x15 mm and is rated for an operating temperature range of -40°C to 85°C.

Feature Summary

• Synchronous SDR architecture with zero bus turnaround capability
• Pipelined outputs with burst counter functionality
• 3.3V I/O compatibility

Applications

• High-speed data buffering in communication systems
• Cache memory implementation in embedded processors
• Network equipment signal processing

Procurement Notes

This component has reached end-of-life status as per public product change notices dated January 3, 2024. Availability is restricted or non-existent through standard distribution channels. Verification of final stock levels and last-time-buy windows requires direct consultation with the manufacturer or authorized distributors. Designers should initiate replacement strategies immediately due to confirmed discontinuation.

Selection Notes

Selection requires confirmation of the 256K x 18 organization and 165-CABGA package constraints. Verify that the system timing requirements align with the 4.2 ns access time and 133 MHz clock limit. Ensure the design accommodates the specified 3.3V I/O voltage levels and the industrial temperature range of -40°C to 85°C. Cross-reference pinouts with legacy IDT variants if migrating from previous generations.

Part Context

This part belongs to the 71V3558 family of synchronous ZBT SRAMs. It shares architectural similarities with other variants such as the 71V3556 series, differing primarily in memory organization (256K x 18 versus 128K x 36) and specific package options. The device represents a high-performance static random-access memory solution designed for applications requiring fast data throughput and low latency.

Replacement Considerations

Public records list the 71V3558S166PFG and 71V3558S166PFGI as similar alternative parts. These substitutes offer different packaging and speed grades but maintain the same core memory technology. Evaluation of these alternatives requires detailed electrical and mechanical compatibility analysis.