70261S25PF

Memory IC Overview

The Renesas 70261S25PF is a high-speed asynchronous dual-port static random-access memory (SRAM) with a storage capacity of 256K-bit, organized as 16K words by 16 bits. It operates on a single 5V power supply within a voltage range of 4.5V to 5.5V and features a maximum access time of 25ns. The device is housed in a 100-pin Thin Quad Flat Package (TQFP). Designed for commercial applications, it supports an operating temperature range from 0°C to +70°C.

Memory IC Feature Summary

• Supports simultaneous independent access to the same memory location from both ports via true dual-ported memory cells.
• Includes on-chip hardware semaphore signaling and port arbitration logic for automatic conflict resolution.
• Features separate upper-byte and lower-byte control lines to enable multiplexed bus compatibility.
• Provides busy and interrupt flags along with automatic power-down capabilities controlled by chip enable signals.

Memory IC Applications

• Stand-alone dual-port RAM configurations
• Master/Slave dual-port RAM combinations for 32-bit or wider systems
• High-speed data buffering between processors

Memory IC Procurement Notes

Verify component authenticity through authorized channels due to potential counterfeit risks. Confirm package integrity and moisture sensitivity level handling requirements prior to assembly. Check for specific manufacturing date codes if long-term reliability is critical. Ensure compliance with relevant environmental regulations applicable to your region before final procurement decisions.

Memory IC Selection Notes

Select this component when simultaneous bidirectional data access is required without external arbitration logic. Suitable for designs needing fast parallel interfaces with TTL-compatible levels. Consider thermal management for commercial grade limits. Verify pinout compatibility if replacing legacy IDT variants.

Memory IC Part Context

Part of the 70261 family of high-speed dual-port SRAMs. This series offers various speed grades and packaging options to suit different performance and form factor requirements. The 70261S25PF represents a specific commercial-grade variant optimized for standard 5V logic systems.

Memory IC Replacement Considerations

Check for direct pin-to-pin replacements within the same manufacturer's portfolio. Verify electrical specifications match exactly. Consider newer generations with improved power efficiency if available.