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Integrated Device Technology Electronic Components Datasheet

ICS843S1333 Datasheet

CRYSTAL-TO-3.3V LVPECL CLOCK SYNTHESIZER

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ICS843S1333 pdf
CRYSTAL-TO-3.3V LVPECL CLOCK SYNTHESIZER
ICS843S1333
General Description
The ICS843S1333 is a high frequency clock
ICS generator and is a member of the HiPerClockS™
HiPerClockS™ family of High Performance Clock Solutions from
IDT. The ICS843S1333 uses an external 20MHz
crystal to synthesize 1333.33MHz. The
ICS843S1333 has excellent cycle-to-cycle and RMS period jitter
performance.
The ICS843S1333 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: 25ps (maximum)
Period Jitter, RMS: 2ps (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) packages
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)
DQ
CLK
Pin Assignment
VCCA 1
8 VCC
VEE 2
7Q
Q
XTAL_OUT 3
6 nQ
XTAL_IN 4
5 OE
nQ
ICS843S1333
8 Lead TSSOP
4.40mm x 3.0mm x 0.925mm package body
G Package
Top View
IDT™ / ICS™ 3.3V LVPECL CLOCK SYNTHESIZER
1
ICS843S1333CG REV. A AUGUST 28, 2008


Integrated Device Technology Electronic Components Datasheet

ICS843S1333 Datasheet

CRYSTAL-TO-3.3V LVPECL CLOCK SYNTHESIZER

No Preview Available !

ICS843S1333 pdf
ICS843S1333
CRYSTAL-TO-3.3V LVPECL CLOCK SYNTHESIZER
Table 2. Pin Descriptions
Number
Name
Type
Description
1
VCCA
Power
2 VEE Power
3,
4
XTAL_OUT
XTAL_IN
Input
Analog supply pin.
Negative supply pin.
Crystal oscillator interface. XTAL_IN is the input, XTAL_OUT is the output.
Synchronous output enable. When logic HIGH, the outputs are enabled and
5
OE
Input
Pullup active. When logic LOW, Q output is forced LOW and nQ output is forced
HIGH. LVCMOS/LVTTL interface levels.
6, 7
nQ, Q
Output
Differential output pair. LVPECL interface levels.
8 VCC Power
Core supply pin.
NOTE: Pullup refers to internal input resistors. See Table 2, Pin Characteristics, for typical values.
Table 3. Pin Characteristics
Symbol
CIN
RPULLUP
Parameter
Input Capacitance
Input Pullup Resistor
Test Conditions
Minimum
Typical
4
51
Maximum
Units
pF
k
IDT™ / ICS™ 3.3V LVPECL CLOCK SYNTHESIZER
2
ICS843S1333CG REV. A AUGUST 28, 2008


Part Number ICS843S1333
Description CRYSTAL-TO-3.3V LVPECL CLOCK SYNTHESIZER
Maker IDT
Total Page 13 Pages
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