0436A8ACLAA-5H

Overview

The IBM 0436A8ACLAA-5H is an 8Mbit (256K x 36) synchronous SRAM manufactured using 0.25µm CMOS technology. It operates with a single differential PECL clock and supports +3.3V power supply, ground, and 2.5V VDDQ. The device features HSTL I/O levels, registered addresses, write enables, synchronous select, and data inputs, along with latched outputs. Access time is specified at 4.5 ns to 5.5 ns depending on the variant documentation. It includes IEEE 1149.1 boundary scan capabilities and functions in a register-latch mode with self-timed late write.

Feature Summary

• Synchronous register-latch mode of operation with self-timed late write capability
• Supports single differential PECL clock input for high-speed synchronization
• Integrates IEEE 1149.1 boundary scan (JTAG) function for testing and verification
• Features registered addresses, write enables, synchronous select, and data inputs

Applications

• High-performance computing systems requiring fast static random access memory
• Network infrastructure equipment utilizing synchronous logic interfaces
• Industrial control systems operating within commercial temperature ranges
• Embedded applications needing boundary scan testability features

Procurement Notes

Verify the specific access time requirement against datasheet variants, as sources cite both 4.5 ns and 5.5 ns. Confirm the package dimensions match your PCB footprint, noting BGA-119 variations exist. Ensure voltage compatibility with the 3.3V core and 2.5V I/O requirements. Check for RoHS compliance status if environmental regulations apply to your assembly process.

Selection Notes

Select this component when a 256K x 36 organization is required for synchronous data processing. It is suitable for designs needing HSTL interface compatibility and PECL clocking. Consider the BGA-119 package constraints for layout. Verify that the operating temperature range of 0°C to 85°C meets your environmental specifications before finalizing the design.

Part Context

This part belongs to IBM's family of 4Mb and 8Mb synchronous SRAMs, which also includes the 0436A4ANLAB and 0418 series. These components share similar architectural features such as 0.25µm CMOS technology and register-latch modes. The family offers various density and organization options to support different memory bandwidth requirements in high-speed digital systems.

Replacement Considerations

The IBM 0436A8ANLAB-5H is a documented substitute within the same product family. Both parts share the 256K x 36 organization and BGA-119 package. Verify pinout compatibility and electrical characteristics before substitution. Ensure the replacement part meets the specific timing and voltage requirements of the original design.