IS43TR16256A-125KBL-TR

Memory IC Overview

The IS43TR16256A-125KBL-TR is a 4Gb DDR3 SDRAM manufactured by ISSI. It features a 256M x 16 organization and operates at speeds up to 1600MT/s (DDR3-1600). The device supports standard 1.5V and low-voltage 1.35V operation, with voltage ranges of 1.425V–1.575V for standard and 1.283V–1.45V for low voltage. It utilizes a 96-ball BGA package measuring 9mm x 13mm. Key electrical parameters include a CAS latency of 11-11-11 at the specified speed bin.

Memory IC Feature Summary

• Supports both standard 1.5V and low-voltage 1.35V power supplies for backward compatibility.
• Features an 8n-bit pre-fetch architecture with eight internal banks for concurrent operations.
• Includes programmable mode registers for CAS latency, burst length, and additive latency.
• Provides dynamic on-die termination and off-chip driver impedance adjustment capabilities.

Memory IC Applications

• High-speed data transfer systems requiring parallel memory interfaces
• Consumer electronics utilizing DDR3L standards
• Industrial applications operating within commercial or extended temperature ranges

Memory IC Procurement Notes

Verify the specific speed bin and voltage configuration against system requirements before ordering. Confirm that the 96-ball BGA footprint matches the PCB layout. Ensure proper initialization sequences are implemented during power-up to meet timing constraints for DLL lock and ZQ calibration. Check for RoHS compliance status if required by regional regulations.

Memory IC Selection Notes

Select this component when a 4Gb capacity with a 16-bit data bus width is required. Choose the low-voltage variant if power efficiency is critical, noting its backward compatibility with 1.5V systems. Ensure the host controller supports the necessary DDR3 commands and timing parameters for the selected speed grade.

Memory IC Part Context

This part belongs to the IS43/46TR16256A family of DDR3 SDRAMs from Integrated Silicon Solution Inc. It is designed as a high-density memory solution for systems needing reliable parallel data storage. The 'TR' suffix indicates tape and reel packaging, suitable for automated surface-mount assembly processes.

Memory IC Replacement Considerations

Direct substitutes within the same family include IS43TR16256AL-125KBL-TR for low-voltage variants. Cross-referencing with other manufacturers requires verifying pin compatibility and electrical specifications, particularly voltage levels and timing parameters.