71V3556SA133BGI

Overview

The IDT71V3556SA133BGI is a synchronous ZBT SRAM with a memory organization of 128K x 36, providing a total capacity of 4.5 Mbit. It operates at a maximum clock frequency of 133 MHz with a typical access time of 4.2 ns. The device utilizes a 119-pin PBGA package measuring 14x22 mm and supports a supply voltage range of 3.135 V to 3.465 V. It functions within an ambient temperature range of -40°C to 85°C.

Feature Summary

• Supports high-performance system speeds through synchronous operation without dead cycles between write and read operations.
• Features internally synchronized output buffer enable to eliminate the need for external OE control.
• Utilizes positive clock-edge triggered registers for address, data, and control signals to support fully pipelined applications.

Applications

• High-speed data buffering in telecommunications equipment
• Cache memory in network processing systems
• Storage in industrial automation controllers

Procurement Notes

Verify component authenticity as this part is officially listed as End-of-Life (EOL) by Renesas Electronics Corporation. Confirm that the specific package variant matches the required PCB footprint. Ensure compliance with RoHS status requirements, noting potential discrepancies between leaded and lead-free versions in the market. Validate moisture sensitivity level handling procedures before assembly.

Selection Notes

Select this component when a 128K x 36 configuration is required for synchronous burst operations. Compare against the 71V3556S series for pin-compatible alternatives if different speed grades or packaging options are needed. Consider the 71V3558 series if a 256K x 18 organization better fits the system architecture while maintaining similar interface characteristics.

Part Context

This device belongs to the IDT 71V3556/58 family of 3.3V Synchronous ZBT SRAMs. The family includes variants such as the 71V3556XS133PFG8 and 71V3558XSA133BGGI8, offering different package types and speed grades. These components are designed for applications requiring fast, reliable memory access with low power consumption.

Replacement Considerations

Public confirmed substitute part numbers include IDT71V3556S133BGI and IDT71V3556SA133BQG8. Verify pinout compatibility and electrical specifications before substitution.