SN74SSTV16859DGGR

Specialty Logic Overview

The SN74SSTV16859DGGR is a registered buffer designed for 2.3-V to 2.7-V VCC operation, featuring 13-bit to 26-bit data width. It operates with SSTL_2 compatible DDR I/O and utilizes differential clock inputs (CLK and CLK). Data registers at the crossing of CLK going high and CLK going low. The device supports low-power standby operation via an LVCMOS RESET input that disables receivers and forces outputs low. It is housed in a 64-pin TSSOP package.

Specialty Logic Feature Summary

• Supports SSTL_2 Class II output specifications
• Features differential clock inputs for precise timing
• Includes LVCMOS reset functionality for system control
• Optimized pinout for DIMM PCB layout

Specialty Logic Applications

• Stacked Low-Profile (1U) PC-1600/2100 DIMMs
• Planar PC2700 (DDR-333) RDIMMs
• Low-power support in memory systems

Specialty Logic Procurement Notes

Verify the specific ordering suffix matches the required package type and lead finish. Confirm moisture sensitivity level ratings and peak reflow temperatures align with assembly processes. Ensure the active status of the part number corresponds to current production availability before finalizing procurement plans.

Specialty Logic Selection Notes

Select this component when designing memory interfaces requiring SSTL_2 compatibility and differential clocking. Consider the 64-pin TSSOP package constraints and thermal impedance characteristics. Evaluate the 2.3-V to 2.7-V supply voltage range against system power rails.

Specialty Logic Part Context

Part of the Texas Instruments Widebus family, the SN74SSTV16859DGGR provides registered buffering for high-speed memory applications. It supports 1-to-2 outputs for stacked DDR DIMMs, addressing the need for signal integrity and timing control in dense memory architectures.

Specialty Logic Replacement Considerations

SN74SSTV16859RGQR is listed as a similar replacement option.

Specialty Logic FAQ

How does the RESET input affect the device?

When RESET is low, differential input receivers are disabled, all registers are reset, and all outputs are forced low.

What are the input voltage requirements?

All inputs are SSTL_2 except the RESET input, which supports LVCMOS switching levels.