CY2XP311

312.5 MHz LVPECL Clock Generator

Cypress Semiconductor Corporation

•

198 Champion Court

•

San Jose

•

408-943-2600

Document Number: 001-59931 Rev. *E

Revised April 6, 2017

312.5 MHz LVPECL Clock Generator

Features

(1.875 MHz to 20 MHz): 0.3 ps (typical)

Functional Description

The CY2XP311 is a PLL (phase locked loop) based high

performance clock generator. It is optimized to generate 10 GB

Ethernet,

SONET,

and

other

high

performance

clock

frequencies. It also produces an output frequency that is 12.5

times the crystal frequency. It uses Cypress’s low noise VCO

technology to achieve 0.3 ps typical RMS phase jitter, which

meets both 10 GB Ethernet and SONET jitter requirements. The

CY2XP311 has a crystal oscillator interface input and one

LVPECL output pair.

For a complete list of related documentation, click here.

/2

PHASE

DETECTOR

CRYSTAL

OSCILLATOR

VCO

/25

OE

External

Crystal

XOUT

XIN

CLK

CLK#

Logic Block Diagram