SN74SSTV16859RGQ8

Specialty Logic Overview

The SN74SSTV16859RGQ8 is a registered buffer within the Widebus family, designed for 2.3-V to 2.7-V VCC and VDDQ operation. It features 13-bit to 26-bit data paths with differential clock inputs (CLK and CLK) and an LVCMOS RESET input. Outputs are SSTL_2 Class II compatible. The device supports low-power standby mode where floating inputs are permitted when RESET is low. It operates from 0°C to 70°C in a 56-pin VQFN package.

Specialty Logic Feature Summary

• Supports 1-to-2 outputs specifically for stacked DDR DIMM architectures
• Differential clock inputs enable precise data registration at signal crossings
• RESET input disables receivers, resets registers, and forces outputs low
• ESD protection exceeds JESD 22 standards for human-body and machine models

Specialty Logic Applications

• Stacked Low-Profile (1U) PC-1600/2100 DIMMs
• Planar PC2700 (DDR-333) RDIMMs
• Low-Power Support Systems

Specialty Logic Procurement Notes

Verify component status as obsolete before procurement planning. Confirm availability through authorized distributors or secondary markets. Ensure replacement strategies account for potential supply constraints. Validate that alternative packages meet PCB layout requirements. Review datasheet revisions for any updates to electrical characteristics or pin configurations prior to final design integration.

Specialty Logic Selection Notes

Select this component for designs requiring SSTL_2 Class II compatibility and differential clocking. Verify voltage levels match the 2.3-V to 2.7-V operating range. Consider the 56-pin VQFN package dimensions for board space constraints. Evaluate thermal impedance specifications for heat dissipation needs. Ensure system timing requirements align with setup and hold time parameters.

Specialty Logic Part Context

Part of the Texas Instruments Widebus family, optimized for high-speed memory applications. Designed to support complex DDR memory architectures with specific pinout optimizations for PCB layout efficiency. Integrates robust ESD protection and latch-up performance exceeding industry standards for reliable operation in demanding environments.

Specialty Logic Replacement Considerations

SN74SSTV16859DGGR is a confirmed substitute part number.