SN74SSTUB32866NMJR

Specialty Logic Overview

The SN74SSTUB32866NMJR is a 32-bit registered buffer manufactured by Texas Instruments, designed for high-speed memory applications. It operates within a supply voltage range of 1.7V to 1.9V and supports SSTL_18 I/O standards. The device features a non-inverting logic type with three-state outputs, providing robust drive capabilities with specified output currents of up to 20mA. Packaged in a 176-pin NFBGA format, it ensures signal integrity through optimized edge-controlled circuits tailored for un-terminated DIMM loads.

Specialty Logic Feature Summary

• Supports configurable 1:1 or 1:2 pin mapping for flexible DIMM driving requirements
• Utilizes differential clock inputs (CLK and CLK) for precise data registration at crossing points
• Includes dedicated reset and control inputs for low-power standby and active modes

Specialty Logic Applications

• DDR2 Registered DIMM (RDIMM) systems
• High-speed memory bus buffering
• Server and workstation memory subsystems

Specialty Logic Procurement Notes

Verify the specific suffix NMJR against the official datasheet to confirm package dimensions and thermal characteristics. Ensure compatibility with SSTL_18 reference voltages and differential clocking schemes required by the target memory architecture. Confirm availability status as product lifecycles may vary.

Specialty Logic Selection Notes

Select this component when designing DDR2 RDIMMs requiring a single device to drive nine SDRAM loads in 1:1 mode. Consider the 1:2 configuration if driving eighteen loads per device is necessary. Ensure the design accommodates the asynchronous reset requirement relative to the differential clock signals for proper initialization.

Specialty Logic Part Context

This part belongs to the SN74SSTV/SSTUB family of registered buffers from Texas Instruments. These devices are engineered specifically for memory interfaces, offering low power consumption and high-speed performance. The SSTUB variant typically includes advanced control features like DCS and CSR for power management.

Specialty Logic Replacement Considerations

Check for direct pin-compatible substitutes within the same SSTUB family. Verify that any replacement maintains the 1.7V-1.9V operating voltage and SSTL_18 compliance. Ensure the alternative device supports the same 176-pin NFBGA package.