SN74SSQE32882ZALR

Specialty Logic Overview

The SN74SSQE32882ZALR is a JEDEC SSTE32882-compliant registered buffer and clock driver designed for DDR3 Registered DIMMs. It operates at VDD of 1.5V with an operating temperature range of 0°C to 85°C. The device supports 28-bit to 56-bit data registering and includes a 1-to-2 register output configuration alongside a 1-to-4 differential clock PLL driver. It utilizes a 176-pin NFBGA package.

Specialty Logic Feature Summary

• Supports stacked DDR3 DIMM configurations via single register backside mounting capability
• Includes parity checking on command, address, and CS-gated data inputs to ensure signal integrity
• Features chip select inputs that prevent data outputs from changing state to minimize system power consumption
• Integrates a 1.5-V phase lock loop clock driver to distribute one differential clock pair to four differential outputs

Specialty Logic Applications

• DDR3 Registered DIMMs up to DDR3-1333
• Single-, dual-, and quad-rank RDIMM designs
• High-density memory modules requiring optimized PCB layout

Specialty Logic Procurement Notes

Verify the specific ordering suffix (ZALR) against current Texas Instruments documentation to confirm package dimensions and tape-and-reel specifications. Confirm the component status as Not Recommended for New Designs (NRND) before finalizing procurement plans. Ensure compatibility with existing board layouts due to the 176-pin NFBGA form factor.

Specialty Logic Selection Notes

Select this component for applications requiring JEDEC SSTE32882 compliance and support for DDR3-1333 speeds. Consider the 176-pin NFBGA package constraints and the requirement for a 1.5V supply voltage. Evaluate the need for backside mounting capabilities and parity checking features inherent to this specific logic family.

Specialty Logic Part Context

This part belongs to the SN74SSQE series of registered buffers and clock drivers. It is specifically engineered for high-speed memory interfaces, providing both data registration and differential clock distribution in a single integrated circuit. The device addresses thermal and power dissipation challenges common in dense memory module architectures.

Specialty Logic Replacement Considerations

SN74SSQEC32882ZALR is listed as a similar replacement option.