70T3399S166BC

Memory IC Overview

The 70T3399S166BC is a high-speed synchronous dual-port static random-access memory (SRAM) manufactured by Renesas Electronics. It features a storage organization of 256K x 18 bits, providing a total capacity of 4.5 Mbits. The device supports an operating clock frequency up to 166 MHz with a maximum access time of 3.6 ns. It operates on a single 3.3V power supply and utilizes a 256-pin CABGA package measuring 17x17 mm. Designed for industrial applications, it functions within a temperature range of -40°C to +85°C.

Memory IC Feature Summary

• Dual-port architecture enables simultaneous independent access to the same memory location from two separate ports.
• Supports selectable pipelined or flow-through output modes to optimize data throughput for specific system requirements.
• Includes JTAG functionality for boundary scan testing and device configuration when housed in BGA packages.
• Features automatic power-down capabilities controlled by chip enable signals to minimize standby power consumption.

Memory IC Applications

• High-performance networking equipment requiring low-latency packet buffering
• Industrial control systems needing reliable data storage across wide temperature ranges
• Telecommunications infrastructure utilizing burst data transfer protocols
• Embedded systems demanding simultaneous read/write operations on shared memory resources

Memory IC 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 assembly. Ensure supply chain stability as this part number may be subject to discontinuation notices. Validate package markings against official datasheet specifications before integration.

Memory IC Selection Notes

Select this component when simultaneous bidirectional data flow is required without bus contention. Choose over single-port alternatives if concurrent host and peripheral access is necessary. Consider the 256-pin CABGA package for space-constrained PCB layouts requiring robust thermal performance. Verify voltage compatibility with 3.3V logic interfaces. Evaluate power consumption profiles against system thermal constraints given the synchronous operation characteristics.

Memory IC Part Context

This device belongs to the 70T3399 series of synchronous dual-port SRAMs. It shares architectural similarities with the 70V3399 and 70T3319 models but differs in speed grade and package options. The 'T' suffix typically indicates industrial temperature range availability. It complements Renesas' portfolio of high-density memory solutions designed for complex embedded applications requiring deterministic timing.

Memory IC Replacement Considerations

Direct substitutes include the 70T3399S133BC for lower speed requirements and the 70V3399S166BC8 for commercial temperature variants. Cross-reference pinouts and electrical characteristics carefully. Verify package dimensions match existing footprints. Assess functional equivalence regarding JTAG support and power-down modes before implementation.