PI6CV857LAE

Overview

The PI6CV857LAE is a PLL-based clock buffer designed for registered DDR DIMM applications. It distributes one differential clock input pair to ten differential output pairs and one feedback pair. The device operates with AVDD and VDDQ supplies ranging from 2.3V to 2.7V, supporting SSTL-2 input and output levels. It features a maximum operating frequency of 170MHz and includes a PWRDWN control pin for power management. The component is housed in a 48-TSSOP package and functions within an operating temperature range of 0°C to 70°C.

Feature Summary

• Zero-delay buffer architecture distributing one differential input to ten differential outputs plus feedback
• Supports SSTL-2 standard for both differential inputs (CLK, CLK) and outputs (Yx, Yx)
• Integrated PLL optimized for low-skew and low-jitter performance in DDR SDRAM systems
• Includes LVCMOS PWRDWN input for disabling receivers and 3-stating outputs

Applications

• Registered DDR DIMM clock distribution
• DDR-SDRAM memory module timing
• Zero-delay board fan-out circuits

Procurement Notes

Verify the specific ordering suffix 'E' confirms Pb-free and Green material compliance as defined in the manufacturer's documentation. Confirm that the 48-TSSOP package dimensions align with the target PCB footprint requirements. Ensure the design accommodates the 2.3V to 2.7V supply voltage range for both AVDD and VDDQ pins to maintain proper operation.

Selection Notes

Select this component when a single differential clock source must drive multiple DDR memory devices with minimal skew. The internal PLL allows synchronization via external FBIN/FBIN pins. Consider the 0°C to 70°C commercial temperature grade against system thermal constraints. Verify compatibility with SSTL-2 signaling levels required by the target memory interface.

Part Context

This part belongs to the PI6CV857 series of PLL clock drivers developed for high-performance memory applications. It serves as a zero-delay buffer to synchronize output clocks directly to the input reference. The device integrates power-down logic and supports spread spectrum clocking inputs to manage EMI in dense memory subsystems.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.