71V2546S133PFG8

Memory IC Overview

The 71V2546S133PFG8 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 bits. The device operates with a clock frequency of 133 MHz and an access time of 4.2 ns. It utilizes a parallel interface and requires a supply voltage between 3.135V and 3.465V. The component is housed in a 100-TQFP package measuring 14x14 mm and supports surface mount installation. It functions within a temperature range of 0°C to 70°C.

Memory IC Feature Summary

• Zero Bus Turnaround technology eliminates dead cycles during bus turnaround between read and write operations.
• Internally synchronized output buffer enable removes the need for external Output Enable control.
• Positive clock-edge triggered address, data, and control signal registers support fully pipelined applications.
• Provides four-word burst capability in either interleaved or linear modes.

Memory IC Applications

• High-performance embedded systems requiring fast memory access
• Network infrastructure equipment
• Industrial automation controllers

Memory IC Procurement Notes

Verify the specific suffix PFG8 against official Renesas documentation to confirm the 100-TQFP package and commercial temperature range. Confirm RoHS compliance status as historical records indicate potential non-compliance for earlier variants. Check for Product Change Notices regarding labeling or manufacturing site updates. Ensure the source document explicitly lists this exact part number to avoid confusion with similar ZBT SRAM models.

Memory IC Selection Notes

Select this component when designing systems that require high-speed synchronous memory with zero wait states during bus direction changes. The 36-bit data width is suitable for applications interfacing with processors or DSPs requiring wide data buses. Verify that the system power supply can maintain the required 3.3V core voltage within the specified tolerance. Ensure the PCB layout accommodates the 100-pin TQFP footprint and thermal requirements for the commercial grade operating range.

Memory IC Part Context

This part belongs to the 71V2556 family of 3.3V CMOS synchronous SRAMs. The family is characterized by its ZBT architecture, which optimizes performance for pipelined applications. While other variants in the series may offer different speeds or packages, this specific model provides a balance of 133 MHz speed and 4.5 Mbit density in a standard TQFP form factor.

Memory IC Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Designers should consult Renesas directly for current equivalent products or obsolescence management options.