843252AGI-04

Specifications

Temperature I Voltage 3.3 V Package TSSOP 16 Speed NA Core Supply Voltage (VDD) Output Supply Voltage (VDDO) No. of Outputs No. of Inputs Output Style Input Style Max. Output Frequency Min. Output Frequency Max. Input Frequency Min. Input Frequency Temp. Grade VCXO Spread Spectrum


Description

FEMTOCLOCK XTAL-TO-3
ICS843252 Features

• Two 3.3V differential LVPECL output pairs
• Using a 19.53125MHz or 25MHz crystal, the two output banks can be independently set for 625MHz, 312.5MHz, 156.25MHz or 125MHz
• Crystal oscillator interface
• VCO range: 490MHz to 680MHz
• RMS phase jitter @ 156.25MHz (1.875MHz - 20MHz): 0.47ps (typical)
• Full 3.3V supply mode
• 0°C to 70°C ambient operating temperature
• Industrial temperature available upon request
• Available in both standard and lead-free RoHS-compliant packages

Description
The ICS843252 is a 2 differential output LVPECL Synthesizer designed to generate Ethernet reference clock frequencies and is a member of the HiPerClocks? family of high performance clock solutions from IDT. Using a 19.53125MHz or 25MHz, 18pF parallel resonant crystal, the following frequencies can be generated based on the settings of 4 frequency select pins (SEL[A1:A0], SEL[B1:B0]): 625MHz, 312.5MHz, 156.25MHz, and 125MHz.

The two banks have their own dedicated frequency select pins and can be independently set for the frequencies mentioned above. The ICS843252 ICS' 3rd generation low phase noise VCO technology and can achieve 1ps or lower typical rms phase jitter, easily meeting Ethernet jitter requirements. The ICS843252 is packaged in a small 16-pin TSSOP package.