Document
Crystal-to-3.3V LVPECL Clock Synthesizer ICS843S1333D
DATA SHEET
General Description
ICS
HiPerClockS™
The ICS843S1333D is a high frequency clock generator. The ICS843S1333D uses an external 20MHz crystal to synthesize 1333.33MHz. The ICS843S1333D has excellent cycle-to-cycle and RMS period jitter performance.
The ICS843S1333D operates at 3.3V operating supply and is available in a fully RoHS compliant 8-lead TSSOP package.
Features
• One differential LVPECL output • Crystal oscillator interface designed for 18pF, 20MHz parallel
resonant crystal
• Cycle-to-Cycle Jitter: 14ps (maximum) • Period Jitter, RMS: 2.6ps (maximum) • Output Duty Cycle: 48 – 52% • Full 3.3V supply mode • 0°C to 70°C ambient operating temperature • Available in lead-free (RoHS 6) package
Table 1. Frequency Table Crystal Frequency (MHz) 20
Multiplier Value 66.67
Output Frequency (MHz) 1333.33
Block Diagram
OE Pullup
20MHz
XTAL_IN
OSC
XTAL_OUT
PLL Multiplier (x66.67)
Q nQ
Pin Assign.