0436A41QLAB-5

Overview

The IBM 0436A41QLAB-5 is a 4Mb Synchronous Register-Latch Mode Static Random Access Memory (SRAM). It features a memory organization of 128K x 36 bits. The device utilizes 0.25µ CMOS technology and operates with a single differential PECL clock. Power requirements include a +3.3V supply, ground, and 2.5V VDDQ. Input and output levels are defined as 2.5V LVTTL. The component supports registered addresses, write enables, synchronous select, and data inputs, along with latched outputs.

Feature Summary

• Synchronous Register-Latch Mode operation with self-timed late write capability
• Single differential PECL clock interface for high-performance timing
• Latched outputs to stabilize data presentation
• Supports IEEE 1149.1 boundary scan functions

Applications

• High-speed data buffering in server architectures
• Cache memory systems requiring low latency
• Network equipment packet processing buffers
• Industrial control systems with synchronous timing requirements

Procurement Notes

Verify the specific speed grade suffix against the required system timing specifications. Confirm that the power supply rails match the +3.3V and 2.5V VDDQ requirements. Ensure the host controller supports the single differential PECL clock interface. Check for RoHS compliance status if environmental regulations apply to the assembly. Validate the BGA package compatibility with the PCB footprint design.

Selection Notes

Select this component when a 4Mb capacity with 36-bit width is necessary for wide data paths. The synchronous register-latch mode is suitable for complex timing domains. Consider the 0.25µ CMOS process for its balance of performance and power consumption. Evaluate the need for latched outputs to simplify downstream logic timing. Ensure the system can provide the required differential clock signal.

Part Context

This part belongs to the IBM 0436A series of high-performance SRAMs. The series includes variants with different organizations such as 512Kx18 and 256Kx36. These devices share common architectural features like synchronous operation and PECL clocking. The family is designed for applications demanding fast random access and reliable data retention in CMOS environments.

Replacement Considerations

Compatible substitutes within the same family include IBM 0436A8ANLAB-5H for 8Mb capacity or IBM 0436A4ANLAB variants with different speed grades. Verify pinout compatibility before substitution. Ensure the replacement part supports the same 36-bit data width and synchronous interface requirements.