709079L9PFI

Memory IC Overview

The Renesas Electronics 709079L9PFI is a high-speed 32K x 8-bit synchronous dual-port static RAM. It features true dual-ported memory cells allowing simultaneous access to the same location from both ports. The device operates on a single 5V (±10%) power supply and supports TTL-compatible logic levels. It offers flow-through or pipelined output modes selectable via the FT/PIPE pin, with a maximum clock-to-data access time of 9ns in commercial grades. The component is housed in a 100-pin Thin Quad Flatpack (TQFP) package.

Memory IC Feature Summary

• True dual-ported architecture enabling simultaneous independent access to shared memory locations by both ports.
• Configurable flow-through or pipelined output modes for either port via dedicated control pins.
• Integrated address counter with enable and reset features for sequential burst operations.
• Dual chip enables facilitating depth expansion configurations without requiring additional external logic.

Memory IC Applications

• High-speed data buffering in network communication systems
• FIFO buffers for unidirectional or bidirectional data flow bursts
• Interfacing between asynchronous processors and synchronous buses
• Depth expansion memory banks in embedded processing architectures

Memory IC Procurement Notes

Verify the specific suffix 'L' indicates low-power operation and 'PF' denotes the 100-pin TQFP package. Confirm the temperature grade matches application requirements, as industrial ranges may require distinct ordering codes. Check current availability status, as this component series has been subject to discontinuation notices. Ensure compatibility with existing PCB footprints and verify moisture sensitivity handling procedures during assembly.

Memory IC Selection Notes

Select this component when simultaneous read/write access to identical addresses is required across two independent interfaces. Choose the pipelined mode for higher throughput applications where latency can be managed, or flow-through for simpler timing constraints. Verify that the system voltage aligns with the specified 5V ±10% requirement. Consider the low-power variant if standby current reduction is critical for thermal management.

Memory IC Part Context

This part belongs to the IDT709089/79 family of synchronous dual-port SRAMs manufactured by Integrated Device Technology, now part of Renesas Electronics. The 709079 variant specifically provides 256Kb density organized as 32K words by 8 bits. It complements the 709089 (64Kx8) offering within the same package and feature set, providing flexibility for different memory capacity needs in high-performance computing designs.

Memory IC Replacement Considerations

Direct substitutes include other members of the 709089/79 family such as the 709079S9PFI for standard power variants. Cross-reference with IDT legacy part numbers like IDT709079L9PF8 for tape-and-reel packaging options. Verify pinout compatibility before replacing, as package dimensions remain consistent within the TQFP-100 form factor.