043641QLAD-5

Overview

The IBM 043641QLAD-5 is a Static Random Access Memory (SRAM) integrated circuit with a total capacity of 4 Mbit. It utilizes the HSTL (High-Speed Transceiver Logic) interface standard for high-speed data transfer. The device is housed in a 119-ball Ball Grid Array (BGA) package, measuring 17x7 mm. Official documentation presents conflicting memory organization specifications, listing it as either 128K x 36 or 256K x 18 bits.

Feature Summary

• Utilizes HSTL interface for high-speed operation
• Compact 119-ball BGA packaging

Applications

• High-performance computing systems requiring fast SRAM access
• Network infrastructure equipment
• Industrial control systems

Procurement Notes

Verify the specific memory organization (128K x 36 vs. 256K x 18) required by your design, as sources differ. Confirm the HSTL voltage level compatibility with your system's I/O standards. Ensure the 119-BGA footprint matches your PCB layout constraints before procurement.

Selection Notes

Select this component when a 4 Mbit SRAM with HSTL compatibility is needed in a small form factor. Consider the pin count and thermal characteristics of the 17x7 mm BGA package. Evaluate the conflicting organizational data to ensure it aligns with your memory controller requirements.

Part Context

This part belongs to IBM's legacy SRAM portfolio, designed for embedded memory applications in telecommunications and computing hardware. The HSTL standard indicates its use in high-speed digital environments typical of late 1990s and early 2000s enterprise systems.

Replacement Considerations

The IBM 043641QLAD-4 is a documented variant within the same series, sharing the 4 Mbit capacity and 119-BGA package. Verify if functional differences exist between the -4 and -5 suffixes regarding speed grades or voltage levels.