General Description

The ICS843N3960I is a LVPECL Clock Synthesizer. The

ICS843N3960I can synthesize 100MHz, 125MHz, 156.25MHz and

212.5MHz from a single 25MHz crystal or reference clock.

Utilizing an external loop filter capacitor, the ICS843N3960I is

capable of holdover mode when the main reference clock becomes

unstable, making this ideal for redundant timing applications.

Features

• Fourth Generation FemtoClock® NG PLL technology

• Two differential LVPECL outputs

• Crystal oscillator interface designed for 12pF, 25MHz parallel

resonant crystal

• CLK/nCLK input pair can accept the following differential input

levels: LVPECL, LVDS, HCSL

• RMS phase jitter at 100MHz (12kHz – 20MHz): 0.510ps (max.)

• RMS phase jitter at 125MHz (12kHz – 20MHz): 0.575ps (max.)

• RMS phase jitter at 156.25MHz (12kHz – 20MHz):

0.504ps (max.)

• RMS phase jitter at 212.5MHz (12kHz – 20MHz): 0.512ps (max.)

• 3.3V power supply

• -40°C to 85°C ambient operating temperature

• Available in lead-free (RoHS 6) package