71V3577S85BQI8

Overview

The Renesas Electronics Corporation 71V3577S85BQI8 is a synchronous static random-access memory (SRAM) device organized as 128K x 36, providing a total storage capacity of 4.5 Mbit. It operates with a maximum clock frequency of 87 MHz and features an access time of 8.5 ns. The component utilizes a parallel interface and requires a supply voltage between 3.135 V and 3.465 V. It is housed in a 165-CABGA package measuring 13x15 mm and supports surface-mount installation. The device functions within a commercial temperature range of 0°C to +70°C.

Feature Summary

• Supports synchronous single data rate (SDR) operation for high-speed data transfer
• Provides fast access times up to 8.5 ns at 87 MHz clock frequency
• Features 3.3V I/O compatibility with dedicated power supply requirements
• Includes boundary scan JTAG interface support for testing and debugging

Applications

• High-performance computing systems requiring fast buffer memory
• Network infrastructure equipment needing low-latency data storage
• Industrial control systems utilizing synchronous SRAM interfaces
• Telecommunications hardware requiring reliable data buffering

Procurement Notes

Verify the specific suffix BQI8 against official Renesas documentation to confirm industrial temperature grade availability, as datasheets may list varying grades. Confirm RoHS compliance status directly with the manufacturer or authorized distributors, as historical records indicate non-compliance for some variants. Check current production status, as this component has been reported as obsolete in certain channels. Ensure moisture sensitivity level handling procedures are followed during assembly.

Selection Notes

Select this component when a 128K x 36 organization is required for wide-data bus applications. The 8.5 ns access time suits designs needing moderate-to-high speed synchronous performance. Verify that the 165-CABGA package fits the PCB footprint constraints. Consider the 3.3V core and I/O voltage levels for power budget calculations. Evaluate alternative parts if industrial temperature range (-40°C to +85°C) is strictly required, as the BQI8 suffix typically denotes commercial range.

Part Context

This part belongs to the Renesas 71V3577 series of synchronous flow-through SRAMs. These devices are designed for high-performance embedded applications requiring fast, random-access memory. The series offers various organizations and speeds, with the 71V3577S85 variant specifically targeting 8.5 ns performance. The CABGA package provides a compact solution for dense board layouts while maintaining thermal efficiency.

Replacement Considerations

Publicly confirmed substitute part numbers include ISSI IS64LF12836EC-7.5B3LA3. Verify pinout compatibility and electrical specifications before substitution. Note that the original Renesas part may be obsolete; check current manufacturing status for both original and replacement parts.