043641RLAD-7

Overview

The IBM 043641RLAD-7 is a standard static random-access memory (SRAM) integrated circuit manufactured by IBM Microelectronics. It features a storage capacity of 4.5 Mbit organized as 128K words by 36 bits. The device utilizes CMOS technology and operates with an access time of 3.5 ns. It is housed in a 153-pin Plastic Ball Grid Array (PBGA) package measuring 14x22 mm. The component supports LVTTL logic levels for interface compatibility.

Feature Summary

• High-density volatile memory storage utilizing CMOS technology
• Wide data bus width supporting 36-bit word organization
• Fast access speed suitable for high-performance processing
• Robust surface-mount packaging for automated assembly

Applications

• High-speed cache memory systems
• Buffer memory in telecommunications equipment
• Data storage modules in industrial control systems
• Embedded memory solutions for network infrastructure

Procurement Notes

Verify the exact suffix designation to ensure correct access time and voltage specifications, as variations exist within the family. Confirm package integrity upon receipt, as PBGA components are sensitive to mechanical stress. Check for obsolescence status, as older IBM microelectronics may be discontinued or available only through secondary markets. Ensure compatibility with existing system voltage requirements before integration.

Selection Notes

Select this component when a 36-bit wide data path is required for specific processor architectures. The 3.5 ns speed class offers a balance between performance and power consumption for legacy systems. Consider the physical dimensions of the 153-pin BGA package during PCB layout planning. Evaluate thermal management requirements associated with CMOS SRAM operation in enclosed environments.

Part Context

This part belongs to IBM's line of high-performance SRAM devices designed for demanding computing applications. The 043641 series typically serves as critical memory components in mainframe and server architectures. IBM Microelectronics produced these chips to meet strict reliability standards for enterprise-level hardware. The specific model represents a mature technology node optimized for stability.

Replacement Considerations

Direct replacements must match the 128K x 36 organization and 153-pin PBGA footprint. Verify that substitute parts support LVTTL interfaces to maintain signal compatibility. Cross-reference pinouts carefully, as minor variations can occur between manufacturers. Ensure the alternative component meets the same 3.5 ns access time specification.