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843202AYILF

Description
clock synthesizer / jitter cleaner 2 lvpecl out synthesizer
Categorysemiconductor    Other integrated circuit (IC)   
File Size241KB,16 Pages
ManufacturerIDT (Integrated Device Technology, Inc.)
Websitehttp://www.idt.com/
Environmental Compliance  
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843202AYILF Overview

clock synthesizer / jitter cleaner 2 lvpecl out synthesizer

843202AYILF Parametric

Parameter NameAttribute value
ManufactureIDT (Integrated Device Technology)
Product CategoryClock Synthesizer / Jitter Cleane
RoHSYes
Package / CaseTQFP-32
PackagingReel
Factory Pack Quantity250
FemtoClock
®
680MHz Crystal-to-3.3V
Differential LVPECL Frequency Synthesizer
PRODUCT DISCONTINUATION NOTICE - LAST TIME BUY EXPIRES MAY 6, 2017
843202I
DATA SHEET
G
ENERAL
D
ESCRIPTION
The 843202I is a 2 output LVPECL Synthesizer optimized to generate
Gigabit Ethernet and SONET reference clock frequencies and is
a member of the family of high performance clock solutions from
IDT. Using a 19.44MHz and 25MHz, 18pF parallel resonant crystal,
155.52MHz and 156.25MHz frequencies can be generated. The part
also allows the use of a recovered clock at QB output. The 843202I
uses IDT’s FemtoClock
TM
low phase noise VCO technology and can
achieve 1ps or lower typical RMS phase jitter. The 843202I is
packaged in a 32-pin LQFP package.
F
EATURES
• Two 3.3V LVPECL outputs
• Selectable crystal oscillator interface or one differential recov-
ered clock inputs
• Supports the following output frequencies: 155.52MHz and
156.25MHz
• VCO range: 560MHz - 680MHz
• RMS phase jitter @ 155.52MHz, using a 19.44MHz crystal
(12kHz – 1.3MHz): 0.86ps (typical)
• RMS phase jitter @ 156.25MHz, using a 25MHz crystal
(1.875MHz –- 20MHz): 0.56ps (typical)
• Full 3.3V supply mode
SELB
X
F
UNCTION
T
ABLE
Control Inputs
SEL[1:0]
00
01
10
11
Outputs
nQB, QB
High, Low
REC_CLK
156.25MHz driven by XTAL_0
155.52MHz driven by XTAL_1
• -40°C to 85°C ambient operating temperature
• Available in lead-free (RoHS 6) package
For functional replacement part use 8T49N242
B
LOCK
D
IAGRAM
OEA
Pullup
P
IN
A
SSIGNMENT
XTAL_OUT0
XTAL_IN0
nQA
25MHz
V
EE
QA
XTAL_IN0
XTAL_OUT0
OSC
Phase
Detector
VCO
625MHz
QA
nc
nc
nc
÷4
nQA
156.25MHz
32 31 30 29 28 27 26 25
V
CCO
_
A
nc
1
2
3
4
5
6
7
8
9 10 11 12 13 14 15 16
nc
QB
nQB
nc
nc
nc
nc
V
CCA
24
23
22
21
20
19
18
17
OEA
V
CC
V
CCA
SEL0
V
EE
OEB
V
CC
SEL1
÷25
00
REC_CLK
Pulldown
nREC_CLK
Pullup
19.44MHz
XTAL_IN1
XTAL_OUT1
nc
01
10
OSC
Phase
Detector
VCO
622.08MHz
QB
nQB
REC_CLK
nREC_CLK
V
CCO
_
B
XTAL_IN1
XTAL_OUT1
÷4
155.52MHz
11
843202I
÷32
SEL[1:0]
Pullup
OEB
Pullup
32-Lead LQFP
7mm x 7mm x 1.4mm
package body
Y Package
Top View
843202I REVISION A 5/26/16
1
©2016 Integrated Device Technology, Inc.

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843202AYILF
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Product Category Clock Synthesizer / Jitter Cleane
RoHS Yes
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Packaging Reel
Factory Pack Quantity 250
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