PI6CV857BAE

Overview

The PI6CV857BAE is a zero-delay PLL clock buffer designed for registered DDR DIMM applications. It distributes one differential clock input pair to ten differential output pairs and one feedback pair, operating at frequencies up to 200 MHz. The device supports SSTL-2 I/O levels with AVDD and VDDQ supplies ranging from 2.3V to 2.7V. It features low skew and jitter performance, tracks spread spectrum clocking for EMI reduction, and includes power-down logic controlled by an LVCMOS PWRDWN pin or automatic frequency detection below 20 MHz.

Feature Summary

• Zero-delay buffer distributing one differential input to ten differential outputs plus feedback
• Supports SSTL-2 inputs/outputs with 2.5V nominal supply (2.3V–2.7V range)
• Tracks Spread Spectrum Clocking (SSC) for EMI reduction
• Includes automatic low-power mode when input frequency drops below 20 MHz

Applications

• Registered DDR SDRAM DIMMs
• Memory subsystem clock distribution
• Systems requiring low-skew differential clocking

Procurement Notes

Verify the component status as discontinued via official Diodes Incorporated channels. Confirm availability of equivalent replacement parts if sourcing new production units is required. Ensure the 48-TSSOP package matches the target PCB footprint and that voltage levels align with the 2.3V–2.7V operating range.

Selection Notes

Select this component for DDR memory designs requiring a 1:10 differential clock fan-out. Ensure the design accommodates the 48-pin TSSOP package dimensions. Verify that the system operates within the specified -40°C to 85°C temperature range and utilizes SSTL-2 compatible signaling standards for both inputs and outputs.

Part Context

This part belongs to the PI6CV857B series, manufactured by Diodes Incorporated (formerly Pericom Semiconductor). It is specifically engineered for high-performance memory interfaces, providing precise clock synchronization through its zero-delay PLL architecture.

Replacement Considerations

Publicly confirmed substitute part numbers include CDCVF857DGG and CDCVF857DGGR from Texas Instruments.