PI6LC4840ZHE

Overview

The PI6LC4840ZHE is a crystal-to-LVDS/LVCMOS frequency synthesizer designed for Ethernet applications. It operates on a 3.3V supply and supports 25MHz and 125MHz frequencies. The device features three output banks: Bank A provides pin-selectable 25/50MHz LVCMOS outputs, Bank B offers 125MHz LVCMOS outputs, and Bank C delivers 125MHz LVDS outputs. An additional non-PLL 25MHz LVCMOS reference clock output is available. Integrated phase noise is specified at a maximum of 1ps (12k-20MHz) for the 125MHz outputs.

Feature Summary

• Three output banks: 3x 25/50MHz LVCMOS (Bank A), 3x 125MHz LVCMOS (Bank B), and 3x 125MHz LVDS (Bank C)
• Low integrated phase noise of max 1ps (12kHz-20MHz) for 125MHz outputs
• Includes one dedicated 25MHz LVCMOS reference clock output without PLL
• Operates within an industrial temperature range of -40°C to 85°C

Applications

• Ethernet network infrastructure requiring low phase noise clocks
• Systems utilizing 25MHz or 125MHz clock frequencies
• Applications needing mixed LVCMOS and LVDS output interfaces

Procurement Notes

Verify component authenticity through authorized Diodes Incorporated channels. Confirm RoHS compliance status and check for Product Change Notifications (PCN) regarding package or labeling updates prior to procurement.

Selection Notes

Select this model when both LVCMOS and LVDS outputs are required simultaneously. Ensure the design accommodates the specific mode pin configurations for Bank A frequency selection. Verify that the external crystal matches the recommended load capacitance of 18pF.

Part Context

This part belongs to the PI6LC48 family of clock generators. The 'ZH' suffix indicates the 32-contact TQFN package, while 'E' denotes Pb-free and Green manufacturing. It serves as a direct replacement for earlier Pericom Semiconductor Corporation designs under the Diodes Incorporated portfolio.

Replacement Considerations

Check for PCN documents related to the PI6LC48 series. Verify if newer revisions maintain identical electrical characteristics and pinout compatibility before substituting.