71V3557S85BGI

Overview

The Renesas 71V3557S85BGI is a synchronous single data rate (SDR) static random-access memory (SRAM) integrated circuit. It features a storage capacity of 4.5 Mbit organized as 128K words by 36 bits. The device supports parallel interface operations with an access time of 8.5 ns and a maximum clock frequency of 87 MHz. It operates within a supply voltage range of 3.135 V to 3.465 V. The component is housed in a 119-pin plastic ball grid array (PBGA) package measuring 14x22 mm.

Feature Summary

• Supports synchronous single data rate (SDR) parallel interface for high-speed data transfer
• Provides 4.5 Mbit storage capacity with 36-bit word width organization
• Operates on standard 3.3 V I/O logic levels

Applications

• High-performance embedded systems requiring fast memory access
• Network infrastructure equipment
• Industrial control applications

Procurement Notes

Verify the specific suffix 'I' against official Renesas documentation, as it typically denotes an industrial temperature range (-40°C to +85°C). Confirm RoHS compliance status, as some variants in this series are marked non-compliant. Check current production status, as multiple sources indicate end-of-life or limited availability for similar PBGA packages in this family.

Selection Notes

Select this component when a 36-bit wide synchronous SRAM interface is required. Ensure the design accommodates the 119-pin PBGA footprint and thermal requirements. Verify that the system clock does not exceed 87 MHz. Compare against other speed grades like the S75 variant if faster access times are needed, ensuring pin compatibility remains consistent across the package type.

Part Context

This part belongs to the IDT 71V3557/59 family of synchronous SRAMs manufactured by Renesas Electronics. These devices are designed for applications demanding high bandwidth and low latency. The 71V3557 series specifically offers 36-bit output widths, distinguishing it from the 71V3556 series which may offer different performance characteristics or pipeline options.

Replacement Considerations

Official substitutes include the 71V3557S75BGI (7.5 ns access) and 71V3557S85PFGI (TQFP-100 package). Verify pinout and electrical specifications before substitution.