71V2546S133BG8

Overview

The 71V2546S133BG8 is a synchronous Single Data Rate Zero Bus Turnaround (ZBT) SRAM manufactured by Renesas Electronics Corporation. It features a storage capacity of 4.5 Mbit organized as 128K x 36. The device operates with a clock frequency of 133 MHz and provides an access time of 4.2 ns. It utilizes a parallel interface and is housed in a 119-pin PBGA package measuring 14x22 mm. The component requires a supply voltage between 3.135V and 3.465V and supports an operating temperature range from 0°C to 70°C.

Feature Summary

• Zero Bus Turnaround architecture eliminates dead cycles during bus turnaround between read and write operations.
• Internally synchronized output buffer enable removes the need for external OE control.
• Single R/W control pin simplifies interface logic requirements.
• Positive clock-edge triggered address, data, and control signal registers support fully pipelined applications.

Applications

• High-performance processor secondary cache systems
• Network infrastructure equipment requiring high-speed data buffering
• Industrial automation controllers demanding fast memory access

Procurement Notes

Verify the specific suffix 'BG8' against official manufacturer documentation to confirm packaging details, as standard datasheets may list 'BG'. Confirm RoHS compliance status, as some variants are marked non-compliant. Check current product lifecycle status, as this series has been subject to End-of-Life notifications. Ensure the selected variant matches the required 119-PBGA footprint and thermal specifications for the target application environment.

Selection Notes

Select this component when zero bus turnaround latency is critical for system throughput. The 133 MHz speed grade suits high-frequency digital signal processing tasks. Verify that the 3.3V power supply aligns with the system design, noting the tight voltage tolerance. Consider the 119-pin BGA package constraints for PCB layout and reflow soldering profiles compared to alternative TSOP or TQFP packages.

Part Context

This part belongs to the 71V2546 family of synchronous ZBT SRAMs. These devices are designed to replace asynchronous SRAMs in high-speed applications by eliminating wait states. The family offers various speed grades and package options to accommodate different performance and form factor requirements in embedded systems and networking hardware.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Consult official Renesas cross-reference guides for verified alternatives.