IS61QDPB42M18A-400M3L

Memory IC Overview

The IS61QDPB42M18A-400M3L is a 36Mb QuadP Synchronous Static Random Access Memory manufactured by ISSI. It features a 2M x 18 organization and supports a maximum clock frequency of 400 MHz. The device utilizes a Double Data Rate interface for both read and write input ports, providing a 2.5-cycle read latency with fixed 4-bit burst operations. It operates within a supply voltage range of 1.7V to 1.9V and is housed in a 165-ball FBGA package measuring 15x17 mm.

Memory IC Feature Summary

• Features separate independent read and write ports enabling concurrent read and write operations.
• Integrates an on-chip Delay-Locked Loop to ensure a wide data valid window.
• Supports synchronous pipeline reads combined with late write operations.

Memory IC Applications

• High-speed networking equipment requiring low-latency buffering
• Telecommunications infrastructure systems
• Industrial automation control units

Memory IC Procurement Notes

Verify the specific suffix M3L against the manufacturer's current datasheet to confirm lead-free status and RoHS compliance requirements. Ensure the ordering part number matches the exact speed grade and package variant required for your design. Cross-reference the document revision date to guarantee alignment with the latest electrical specifications and pinout definitions before finalizing procurement.

Memory IC Selection Notes

Select this component when a 2M x 18 configuration with 400 MHz performance is required. It is suitable for designs needing concurrent dual-port access and DDR interfaces. Consider the 165-ball FBGA footprint for board space constraints. Verify that the system power supply can maintain the 1.7V to 1.9V operating range under all load conditions.

Memory IC Part Context

This part belongs to the IS61QDPB series of QuadP Synchronous SRAMs from ISSI. The series offers various density options including 1Mx36 and 2Mx18 configurations. These devices are designed for high-performance applications demanding fast data throughput and flexible port architectures within a compact surface-mount package.

Memory IC Replacement Considerations

Consult the official ISSI product selector guide for verified cross-references. Alternative speeds or densities within the same family may require schematic adjustments. Do not substitute without confirming pin compatibility and electrical parameter alignment via the manufacturer's documentation.

Memory IC FAQ

What is the read latency of the IS61QDPB42M18A-400M3L?

The device has a specified read latency of 2.5 cycles.

Does this SRAM support simultaneous read and write operations?

Yes, it features separate independent read and write ports that allow for concurrent operations.