71V3579S75PFG

Overview

The 71V3579S75PFG is a 4.5Mb (256K x 18) Synchronous Single Data Rate (SDR) Static Random-Access Memory (SRAM) integrated circuit manufactured by Renesas Electronics Corporation. It features a parallel interface with an access time of 7.5 ns and operates at a clock frequency of approximately 133 MHz. The device functions within a supply voltage range of 3.135V to 3.465V and supports surface mount installation in a 100-TQFP (14x14) package. It is designed for commercial temperature ranges from 0°C to 70°C.

Feature Summary

• Synchronous single data rate architecture for high-speed data transfer
• Parallel interface supporting wide 18-bit data bus
• Fast 7.5 ns access time for low-latency operations
• Standard 100-pin TQFP surface-mount packaging

Applications

• High-performance embedded systems requiring fast memory access
• Network infrastructure equipment buffers
• Industrial control system data storage
• Telecommunications base station processing units

Procurement Notes

Verify component authenticity through authorized distributors due to potential counterfeit risks. Confirm RoHS compliance status as older batches may not meet current environmental standards. Check moisture sensitivity level handling requirements during storage and assembly. Ensure supply chain stability as the part may be subject to obsolescence notices. Validate package markings against official datasheet specifications.

Selection Notes

Select this component when synchronous SRAM performance is required with specific 18-bit data width constraints. Consider the 7.5 ns speed grade for applications needing faster cycle times than slower variants offer. Evaluate the 100-TQFP footprint compatibility with existing PCB layouts. Compare power consumption characteristics against alternative memory technologies for system efficiency optimization.

Part Context

This part belongs to the IDT 71V3579 family of synchronous SRAMs, originally developed by Integrated Device Technology before its acquisition by Renesas. The family includes various speed grades and package options. The 71V3579 series is widely used in networking and industrial applications where deterministic memory access timing is critical for system reliability and performance.

Replacement Considerations

Direct substitutes include the 71V3579S65PFG for faster performance or 71V3579S85PFG for lower cost. Cross-manufacturer alternatives like ISSI IS61LF25618A-7.5TQLI require verification of pinout and electrical compatibility. Always confirm functional equivalence before replacing obsolete parts.