74SSTUB32868AZRHR

Specialty Logic Overview

The Texas Instruments 74SSTUB32868AZRHR is a 28-bit, 1:2 configurable register buffer with parity check capabilities. It operates within a supply voltage range of 1.7V to 1.9V and supports an industrial temperature range of -40°C to 85°C. The device is housed in a 176-NFBGA package measuring 6x15 mm. Inputs are SSTL_18 compatible, while outputs are optimized for unterminated DIMM loads. Parity checking occurs on data inputs excluding DIMM-related signals.

Specialty Logic Feature Summary

• Configurable pin mapping between Register A and Register B via the C input
• Integrated odd parity error detection with QERR output signaling
• Differential clock inputs (CLK and CLK) for data registration at crossing points
• Optimized output drivers for driving SDRAM loads on memory modules

Specialty Logic Applications

• DDR2 Registered DIMMs (RDIMMs)
• High-speed memory bus buffering
• Server and workstation memory subsystems

Specialty Logic Procurement Notes

Verify the specific suffix 'A' against official datasheets to confirm any distinct manufacturing or qualification differences compared to the base model. Ensure compatibility with SSTL_18 I/O standards and 1.8V power domains. Confirm package dimensions match the 176-NFBGA specification for PCB layout integration.

Specialty Logic Selection Notes

Select this component for designs requiring 28-bit wide memory interfaces with built-in error checking. It is suitable for applications needing configurable register banks to optimize trace routing. Ensure the design environment supports differential clocking and provides adequate reset timing relative to the clock signals.

Specialty Logic Part Context

This part belongs to the 74SSTUB series of specialized logic devices designed for high-performance memory systems. It serves as a critical interface between memory controllers and DRAM modules, providing signal integrity and data integrity features essential for reliable system operation in demanding computing environments.

Specialty Logic Replacement Considerations

The 74SSTUB32868ZRHR is listed as a similar alternative by distributors.