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843S1333D Datasheet

Crystal-to-3.3V LVPECL Clock Synthesizer

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Crystal-to-3.3V LVPECL Clock
Synthesizer
843S1333D
Data Sheet
General Description
The 843S1333D is a high frequency clock generator. The
843S1333D uses an external 20MHz crystal to synthesize
1333.33MHz. The 843S1333D has excellent cycle-to-cycle and
RMS period jitter performance.
The 843S1333D 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
Q
OSC
PLL Multiplier
(x66.67)
nQ
XTAL_OUT
Pin Assignment
VCCA 1
VEE 2
XTAL_OUT 3
XTAL_IN 4
8 VCC
7Q
6 nQ
5 OE
843S1333D
8 Lead TSSOP
4.40mm x 3.0mm x 0.925mm package body
G Package
Top View
©2015 Integrated Device Technology, Inc
1
Revision A December 2, 2015


Renesas Electronics Components Datasheet

843S1333D Datasheet

Crystal-to-3.3V LVPECL Clock Synthesizer

No Preview Available !

843S1333D Data Sheet
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. External
tuning capacitor must be used for proper operation.
Synchronous output enable. When logic HIGH, the outputs are enabled and active.
5
OE
Input
Pullup 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
2
51
Maximum
Units
pF
k
©2015 Integrated Device Technology, Inc
2
Revision A December 2, 2015



Part Number 843S1333D
Description Crystal-to-3.3V LVPECL Clock Synthesizer
Maker Renesas
Total Page 3 Pages
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843S1333D Datasheet PDF





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