SSTUA32866EC/G,518

Specialty Logic Overview

The SSTUA32866EC/G,518 is a 1.8 V configurable registered buffer designed for DDR2 memory modules requiring parity checking. It operates within a supply voltage range of 1.7 V to 2.0 V and supports clock frequencies up to 450 MHz. The device features a maximum single-bit switching propagation delay of 1.8 ns and a mass-switching delay of 2.0 ns. It provides low-level output current of 8 mA and high-level output current of -8 mA. The component is housed in a 96-ball LFBGA package with dimensions of 13.5 mm x 5.5 mm.

Specialty Logic Feature Summary

• Configurable register supporting two topologies: 25-bit 1:1 or 14-bit 1:2 modes via configuration pins.
• Integrated parity checking function that compares input data against controller parity bits to detect errors.
• Optimized pinout and controlled output impedance drivers designed for high-density DDR2 module signal integrity.
• Supports differential clock inputs and LVCMOS control levels while operating on a single 1.8 V supply.

Specialty Logic Applications

• DDR2 registered DIMMs operating at speeds from 400 MT/s to 667 MT/s
• Memory systems requiring hardware-based parity error detection
• High-density motherboard designs utilizing 1.8 V logic standards

Specialty Logic Procurement Notes

Verify the specific ordering suffix matches the required solder ball compound, as EC denotes lead-free SnAgCu while other variants may use SnPb. Confirm the package version corresponds to the SOT536-1 designation. Ensure the ambient temperature rating aligns with the specified commercial range of 0 °C to +70 °C for the intended application environment.

Specialty Logic Selection Notes

Select this component when designing DDR2 registered memory solutions that mandate parity verification capabilities. The choice depends on the required topology, either a full 25-bit width or a split 14-bit configuration for dual-register setups. Consider the power consumption characteristics and the specific timing requirements relative to the memory controller interface speed.

Specialty Logic Part Context

This part belongs to the NXP SSTU series of configurable registered buffers. It is specifically engineered to meet JEDEC standards for DDR2 applications. The device integrates both buffering and error-checking logic into a single package, reducing the component count compared to separate buffer and parity check ICs.

Specialty Logic Replacement Considerations

SSTUA32866EC/S,518