SN74SSTUB32864ZKER

Specialty Logic Overview

The SN74SSTUB32864ZKER is a 25-bit configurable register buffer manufactured by Texas Instruments. It operates with a supply voltage range of 1.7V to 1.9V and features SSTL_18 compliant outputs optimized for unterminated DIMM loads. The device supports two pin configurations: a 25-bit 1:1 mode or a 14-bit 1:2 mode, controlled by the C1 input. Inputs are primarily SSTL_18, while RESET and control inputs utilize LVCMOS levels. It employs differential clocking (CLK and CLK) for data registration at the rising and falling edge crossover. The component is housed in a BGA-96 Microstar package.

Specialty Logic Feature Summary

• Configurable 25-bit 1:1 or 14-bit 1:2 pin mapping architecture
• Differential clock operation with data registration at clock edge crossover
• SSTL_18 output compliance optimized for unterminated DIMM loads
• Supports low-power standby and active modes via RESET and DCS/CSR controls

Specialty Logic Applications

• DDR2 Registered DIMM (RDIMM) memory modules
• High-speed memory bus buffering
• System-on-module memory interfaces

Specialty Logic Procurement Notes

Verify the specific suffix 'ZKER' against official Texas Instruments documentation to confirm package type, temperature grade, and tape-and-reel specifications. Ensure compatibility with SSTL_18 signaling standards and 1.7V–1.9V power domains. Confirm that the differential clock requirements and asynchronous reset behavior align with the target system design constraints before procurement.

Specialty Logic Selection Notes

Select this component when designing DDR2 RDIMM applications requiring a single device to drive nine SDRAM loads in 1:1 mode or two devices for eighteen loads in 1:2 mode. It is suitable for systems needing SSTL_18 compliant buffering with low-power standby capabilities. Ensure the design accommodates the 1.7V to 1.9V VCC requirement and differential clock inputs. Verify that the BGA-96 Microstar package fits the PCB layout constraints.

Specialty Logic Part Context

This part belongs to the SN74SSTUB family of register buffers designed for high-speed memory applications. It complements other SSTL-compliant logic components by providing registered buffering with configurable pinouts. The device addresses the need for efficient signal integrity management in DDR2 memory architectures, offering flexibility through its dual-mode configuration capability.

Specialty Logic Replacement Considerations

Publicly confirmed substitute part numbers for SN74SSTUB32864ZKER are not available in the provided reference data. Consult Texas Instruments for current equivalent products within the SSTUB family or updated revisions.