0418A4ACLAA-4F

Overview

The IBM 0418A4ACLAA-4F is a volatile Static Random Access Memory (SRAM) integrated circuit with a total storage capacity of 4 Megabits. The memory organization is structured as 256K words by 18 bits. It utilizes an HSTL interface standard and features a maximum access time of 4.3 nanoseconds. The device operates within a supply voltage range of 3.135V to 3.465V and supports a commercial operating temperature range from 0°C to 85°C. It is housed in a 119-ball Ball Grid Array (BGA) package measuring 22x14 mm, designed for surface mount installation.

Feature Summary

• High-speed data access capability with 4.3 ns latency
• Integrated HSTL interface for system compatibility
• Robust thermal performance across commercial temperature ranges

Applications

• Embedded systems requiring fast volatile data storage
• Server hardware cache memory modules
• Industrial control system data buffering

Procurement Notes

Verify the specific suffix '4F' against official IBM documentation to confirm pinout and electrical characteristics match your design requirements. Ensure the 119-BGA footprint aligns with your PCB layout constraints. Confirm RoHS status and moisture sensitivity level handling procedures prior to assembly to prevent component damage during soldering processes.

Selection Notes

Select this component when a high-density SRAM solution with HSTL signaling is required for server or industrial applications. The 18-bit word width suggests use in systems needing wider data paths without external parity logic overhead. Verify that the 3.3V nominal supply voltage matches your system's power rails before finalizing the bill of materials.

Part Context

This part belongs to IBM's legacy SRAM portfolio, often utilized in Power Systems infrastructure. As a specialized memory component, it serves critical roles in high-performance computing environments where low-latency data retrieval is essential for system stability and processing efficiency.

Replacement Considerations

Consult official IBM cross-reference guides for verified substitutes. Generic SRAM replacements may not support the specific HSTL interface or 18-bit organization, potentially causing signal integrity issues.