IS43TR85120AL-15HBL

Memory IC Overview

The IS43TR85120AL-15HBL is a 4 Gbit DDR3 SDRAM component manufactured by ISSI. It features an 8-bit data bus width and a memory organization of 512M x 8. The device supports low voltage operation at 1.35V with backward compatibility to standard 1.5V levels. It operates at a maximum clock frequency of 666 MHz, corresponding to the DDR3-1333 speed grade. The chip is housed in a 78-ball BGA package measuring 9mm by 10.5mm. It functions within a commercial temperature range of 0°C to +95°C.

Memory IC Feature Summary

• Supports low voltage operation at 1.35V while maintaining backward compatibility with standard 1.5V systems.
• Features eight internal banks for concurrent operations and an 8n-bit pre-fetch architecture.
• Includes programmable CAS latency, additive latency, and burst length settings via mode registers.
• Integrates dynamic on-die termination and supports write leveling for signal integrity.

Memory IC Applications

• High-speed data processing in communication equipment
• Memory subsystems for network infrastructure devices
• Industrial control systems requiring wide operating temperatures

Memory IC Procurement Notes

Verify the specific speed bin suffix (15H) matches system timing requirements. Confirm the low voltage (L) designation aligns with power supply specifications. Ensure the 78-ball BGA footprint corresponds to the PCB layout. Check for moisture sensitivity handling requirements during assembly.

Memory IC Selection Notes

Select this part for applications requiring 4 Gbit density with an 8-bit interface. The 1.35V operation reduces power consumption compared to standard voltage variants. The 78-ball BGA package offers a compact form factor suitable for space-constrained designs. Verify thermal management capabilities for the specified commercial temperature range.

Memory IC Part Context

This component belongs to the IS43TR85120AL series of DDR3 SDRAMs from ISSI. It is designed for high-performance embedded applications requiring reliable data storage. The series includes various speed grades and voltage options to suit different system constraints. It complements ISSI's broader portfolio of static and dynamic memory solutions.

Memory IC Replacement Considerations

IS43TR85120A-15HBL

Memory IC FAQ

Is the IS43TR85120AL-15HBL compatible with 1.5V systems?

Yes, the device is backward compatible to 1.5V operation despite being designated as a low voltage variant.

What is the maximum clock frequency for this speed bin?

The maximum clock frequency is 666 MHz, which corresponds to the DDR3-1333 speed grade.