SSTUH32866EC/G,551

Specialty Logic Overview

The NXP SSTUH32866EC/G,551 is a 1.8 V configurable registered buffer designed for DDR2 memory modules requiring parity checking. It supports two topologies: 25-bit 1:1 or 14-bit 1:2. The device operates with a maximum clock frequency of 450 MHz and features a single-bit switching propagation delay of 1.8 ns. It functions within a supply voltage range of 1.7 V to 1.9 V and includes an open-drain error output (QERR) for parity verification.

Specialty Logic Feature Summary

• Configurable register supporting DDR2 Registered DIMM applications
• Higher output drive strength optimized for high-capacitive load nets
• Checks parity on the DIMM-independent data inputs
• Supports differential clock inputs

Specialty Logic Applications

• DDR2 registered DIMMs desiring parity checking functionality
• Stacked or planar high-DRAM count registered DIMMs

Specialty Logic Procurement Notes

Verify the specific ordering suffix against official documentation to confirm solder ball composition and package variant. Confirm that the component meets environmental standards such as RoHS compliance. Ensure compatibility with the target system's voltage levels and signal integrity requirements before procurement.

Specialty Logic Selection Notes

Select this component when designing DDR2 RDIMMs that require integrated parity checking capabilities. Consider its higher drive strength for driving heavy load nets like stacked DRAMs. Evaluate the 1.8 V supply requirement and ensure the design accommodates the specified operating temperature range and package dimensions.

Specialty Logic Part Context

This part belongs to the SSTU series of configurable registered buffers. It is functionally identical to the SSTU32866 but features higher-drive outputs optimized for heavy load nets while maintaining speed and signal integrity. It is defined in accordance with the JEDEC JESD82-7 standard for the SSTU32864 registered buffer.

Specialty Logic Replacement Considerations

SSTU32866EC/G,557