71V3558SA166BQGI

Memory IC Overview

The 71V3558SA166BQGI is a synchronous Single Data Rate (SDR) Zero Bus Turnaround (ZBT) Static Random-Access Memory (SRAM) integrated circuit manufactured by Renesas Electronics Corporation. It features a total storage capacity of 4.5 Megabits, organized as 256K words by 18 bits. The device supports a maximum clock frequency of 166 MHz with a typical access time of 3.5 nanoseconds. It operates within a supply voltage range of 3.135V to 3.465V and is designed for surface mount installation in a 165-CABGA package measuring 13x15 mm. The component is rated for an ambient operating temperature range from -40°C to +85°C.

Memory IC Feature Summary

• Supports high-speed parallel data transfer via a synchronous interface with pipelined output architecture.
• Eliminates dead bus cycles during read-to-write or write-to-read transitions using Zero Bus Turnaround technology.
• Integrates a burst counter for sequential memory access operations.

Memory IC Applications

• High-performance networking equipment requiring fast buffer memory
• Industrial automation control systems
• Telecommunications infrastructure hardware

Memory IC Procurement Notes

Verify the specific suffix BQGI against official Renesas documentation to confirm the exact package type and moisture sensitivity level. Confirm RoHS3 compliance status through current datasheets. Check for Product Change Notifications regarding label changes or assembly site updates before procurement.

Memory IC Selection Notes

Select this component when a 4.5Mb ZBT SRAM with 166MHz performance is required in a 165-pin CABGA package. Ensure the design accommodates the 3.3V I/O logic levels and the specified -40°C to +85°C industrial temperature range. Verify pin compatibility if replacing older IDT variants.

Memory IC Part Context

This part belongs to the 71V3558 family of 3.3V Synchronous ZBT SRAMs. It shares architectural similarities with other members like the 71V3558S166BQG but differs in packaging and temperature rating. The family utilizes Renesas' CMOS technology for low power consumption and high-speed operation.

Memory IC Replacement Considerations

Official substitutes include 71V3558SA166BQG for similar functionality in a different package configuration. Cross-reference with IDT71V3558SA166BQGI for legacy naming conventions.