PCKV857ADGG,518

Overview

The PCKV857ADGG,518 is a differential clock driver and distribution IC designed for DDR SDRAM applications. It features an integrated PLL to distribute a single differential SSTL-2 input clock to ten differential SSTL-2 outputs with a 1:10 ratio. The device operates at frequencies between 100 MHz and 250 MHz with a supply voltage range of 2.3 V to 2.7 V. Key electrical characteristics include output skew under 150 ps and period jitter within ±75 ps. It is housed in a 48-TSSOP package and supports spread spectrum clocking.

Feature Summary

• Integrated PLL provides zero-delay buffering for 1-to-10 differential clock distribution
• Optimized for DDR SDRAM with very low skew (<150 ps) and jitter (<±75 ps)
• Supports SSTL_2 interface inputs and outputs with slope control
• Includes power-down mode and spread spectrum clock tolerance

Applications

• DDR (Double Data Rate) SDRAM clock distribution
• High-speed memory controller interfaces
• System-on-chip (SoC) clock generation networks

Procurement Notes

Verify the specific ordering suffix '518' against current NXP documentation, as datasheets reference 'PCKV857ADGG'. Confirm availability status, as this component family may be discontinued or superseded by newer series. Ensure compatibility with existing PCB footprints for the 48-TSSOP package.

Selection Notes

Select this component when a 1:10 differential clock fan-out is required for DDR memory systems operating up to 250 MHz. Ensure the design accommodates separate AVDD and VDDQ power supplies within the 2.3 V to 2.7 V range. Verify that the system requires SSTL_2 compatible signaling levels.

Part Context

This part belongs to the Philips/NXP PCKV857A series of clock drivers. The 'ADGG' suffix indicates the 48-pin Plastic TSSOP package variant. The '518' suffix typically denotes a specific tape-and-reel packaging configuration or manufacturing lot code, distinct from the tray-packaged variants found in older documentation.

Replacement Considerations

Check for direct replacements within the PCKV857A family, such as PCKV857ADGV. Evaluate newer NXP clock buffer families if the PCKV857A is no longer recommended for new designs.