IS46DR16640B-25DBLA1

Memory IC Overview

The IS46DR16640B-25DBLA1 is a 1Gb (64M x 16) DDR2 SDRAM manufactured by ISSI. It operates at a maximum clock frequency of 400 MHz with a supply voltage of 1.8V ± 0.1V. The device features an 84-ball TW-BGA package and supports industrial temperature ranges from -40°C to 85°C ambient. Key electrical parameters include a 400 ps access time and a write cycle time of 15 ns.

Memory IC Feature Summary

• Supports bidirectional differential data strobes for improved signal integrity
• Includes on-die termination (ODT) to reduce reflections
• Features partial array self-refresh (PASR) for power optimization
• Utilizes a 4-bit prefetch architecture for high bandwidth

Memory IC Applications

• Automotive infotainment systems
• Industrial control memory buffers
• High-performance computing graphics frames

Memory IC Procurement Notes

Verify the specific suffix 'A1' confirms the automotive grade and industrial temperature range (-40°C to 85°C). Confirm the package type matches the 84-ball TW-BGA requirement. Ensure the speed grade corresponds to the 400 MHz operation capability. Check RoHS compliance status against current manufacturing revisions.

Memory IC Selection Notes

Select this component when a 1Gb density with a 16-bit interface is required. Ensure the system design accommodates the 1.8V SSTL_18 signaling standard. Verify that the PCB layout supports the 84-ball TW-BGA footprint dimensions of 8mm x 12.5mm. Consider the thermal characteristics for the specified operating temperature range.

Memory IC Part Context

This part belongs to the IS46DR16640B series of DDR2 SDRAMs. It shares architectural similarities with the IS43DR16640B but differs in organization and specific feature sets. The series supports various speed grades and package options, including x8 and x16 configurations.

Memory IC Replacement Considerations

IS43DR16640C-25DBLI-TR is a parameter-equivalent alternative.