SSTV16857DGG,118

Specialty Logic Overview

The SSTV16857DGG,118 is a 14-bit registered driver with differential clock inputs designed for DDR SDRAM applications. It operates between 2.3 V and 2.7 V with outputs supporting Class I loads. The device features a flow-through architecture to optimize PCB layout and includes an asynchronous master reset pin. It supports maximum clock frequencies up to 200 MHz and provides propagation delays of 1.0 ns to 2.8 ns from clock to output. The component is available in TSSOP-48 packages.

Specialty Logic Feature Summary

• Stub-series terminated logic optimized for DDR SDRAM applications
• Flow-through architecture designed to optimize PCB layout
• Inputs compatible with JESD8–9 SSTL_2 specifications
• Asynchronous master reset capability for defined initial states

Specialty Logic Applications

• Standard DIMM designs defined by JEDEC
• DDR SDRAM memory modules
• SDRAM II Memory Modules

Specialty Logic Procurement Notes

Verify the package type matches the required board design, as this specific part number corresponds to the 48-pin Plastic TSSOP variant. Confirm that the operating temperature range aligns with system requirements, as this version is rated for 0 to +70 °C. Ensure supply voltages remain within the specified 2.3 V to 2.7 V limits during operation.

Specialty Logic Selection Notes

Select this component when designing standard DDR SDRAM or SDRAM II memory modules requiring registered control and address lines. It serves as a direct replacement for the SSTL16877 in terms of form, fit, and function. Consider using two devices per module to handle the required 23 to 27 registered lines. Verify compatibility with the PCKV857 PLL clock distribution device for full DDR solutions.

Specialty Logic Part Context

This device belongs to the SSTV16857 family of integrated circuits manufactured by NXP Semiconductors (formerly Philips Semiconductors). It is specifically engineered to reduce signal loads on memory controllers and prevent timing delays in high-speed data transfer environments. The product data supersedes earlier versions released in June 2002.

Specialty Logic Replacement Considerations

The datasheet explicitly states that the SSTV16857 has the same form, fit, and function as the SSTL16877. Designers may consider this equivalent for direct substitution in existing layouts without modification.