General Description

The ICS844625I is a high frequency clock generator. The

ICS844625I uses an external 25MHz crystal to synthesize

312.5MHz, 156.25MHz and 125MHz clocks. The ICS844625I has

excellent cycle-to-cycle and RMS period jitter performance.

The ICS844625I operates at full 3.3V, 2.5V or mixed 3.3V, 2.5V

supply modes and is available in a fully RoHS compliant 48-lead

TQFP, E-Pad package.

Features

• Ten selectable differential LVDS outputs

• Output frequencies of 312.5MHz, 156.25MHz or 125MHz using a

25MHz crystal.

• Crystal oscillator interface designed for 18pF, 25MHz parallel

resonant crystal

• Cycle-to-cycle jitter: 13ps (typical)

• RMS phase jitter at 125MHz (1.875MHz - 20MHz):

0.417ps (typical), VDD = 3.3V

• RMS phase jitter at 156.25MHz (1.875MHz - 20MHz):

0.387ps (typical), VDD = 3.3V

• Output duty cycle: 50%, (typical)

• Supply modes:

VDD / VDDA / VDDO

3.3V / 3.3V / 3.3V

2.5V / 2.5V / 2.5V

3.3V / 3.3V / 2.5V

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

• Available in lead-free (RoHS 6) package

• For functional replacement use 849S625i