EEWORLDEEWORLDEEWORLD

Part Number

Search

ICS843246AG

Description
FEMTOCLOCKS⑩ CRYSTAL-TO-3.3V LVPECL FREQUENCY SYNTHESIZER W/INTEGRATED FANOUT BUFFER
File Size194KB,15 Pages
ManufacturerICS ( IDT )
Websitehttp://www.icst.com
Download Datasheet Compare View All

ICS843246AG Overview

FEMTOCLOCKS⑩ CRYSTAL-TO-3.3V LVPECL FREQUENCY SYNTHESIZER W/INTEGRATED FANOUT BUFFER

PRELIMINARY
Integrated
Circuit
Systems, Inc.
ICS843246
F
EMTO
C
LOCKS
™ C
RYSTAL
-
TO
-3.3V LVPECL
F
REQUENCY
S
YNTHESIZER W
/I
NTEGRATED
F
ANOUT
B
UFFER
F
EATURES
Six LVPECL outputs
Crystal oscillator interface
Output frequency range: 53.125MHz to 333.3333MHz
Crystal input frequency range: 25MHz to 33.333MHz
RMS phase jitter at 125MHz, using a 25MHz crystal
(1.875MHz to 20MHz):
0.41ps
(typical)
Full 3.3V or 3.3V core, 2.5V output supply mode
0°C to 70°C ambient operating temperature
Industrial temperature information available upon request
Available in both standard and lead-free RoHS-compliant
packages
Function
G
ENERAL
D
ESCRIPTION
The ICS843246 is a Crystal-to-3.3V LVPECL
Clock Synthesizer/Fanout Buffer designed for
HiPerClockS™
Fibre Channel and Gigabit Ethernet appli-
cations and is a member of the HiperClockS™
family of High Performance Clock Solutions
from ICS. The output frequency can be set using the fre-
quency select pins and a 25MHz crystal for Ethernet
frequencies, or a 26.5625MHz crystal for a Fibre Channel.
The low phase noise characteristics of the ICS843246
make it an ideal clock for these demanding applications.
IC
S
S
ELECT
F
UNCTION
T
ABLE
Inputs
FB_SEL
0
0
0
0
1
1
1
1
N_SEL1
0
0
1
1
0
0
1
1
N_SEL0
0
1
0
1
0
1
0
1
M Divide
20
20
20
20
24
24
24
24
N Divide
2
4
5
8
3
4
6
12
M/N
10
5
4
2.5
8
6
4
2
B
LOCK
D
IAGRAM
Q0
nQ0
PLL_BYPASS
Pullup
P
IN
A
SSIGNMENT
V
CCO
V
CCO
nQ2
Q2
nQ1
Q1
nQ0
Q0
PLL_BYPASS
V
CCA
V
CC
FB_SEL
1
2
3
4
5
6
7
8
9
10
11
12
24
23
22
21
20
19
18
17
16
15
14
13
Q3
nQ3
Q4
nQ4
Q5
nQ5
N_SEL1
V
EE
V
EE
N_SEL0
XTAL_OUT
XTAL_IN
Q1
1
XTAL_IN
XTAL_OUT
nQ1
OSC
PLL
0
Output
Divider
Q2
nQ2
Q3
nQ3
Q4
nQ4
Q5
nQ5
Feedback
Divider
FB_SEL
N_SEL1
N_SEL0
Pulldown
Pullup
Pullup
ICS843246
24-Lead, 300-MIL SOIC
7.5mm x 15.33mm x 2.3mm
body package
M Package
Top View
24-Lead TSSOP
4.40mm x 7.8mm x 0.92mm
body package
G Package
Top View
The Preliminary Information presented herein represents a product in prototyping or pre-production. The noted characteristics are based on
initial product characterization. Integrated Circuit Systems, Incorporated (ICS) reserves the right to change any circuitry or specifications
without notice.
843246AM
www.icst.com/products/hiperclocks.html
REV. A SEPTEMBER 29, 2005
1

ICS843246AG Related Products

ICS843246AG ICS843246 ICS843246AM ICS843246AMLF ICS843246AMT ICS843246AGLF ICS843246AGT ICS843246AGLFT ICS843246AMLFT
Description FEMTOCLOCKS⑩ CRYSTAL-TO-3.3V LVPECL FREQUENCY SYNTHESIZER W/INTEGRATED FANOUT BUFFER FEMTOCLOCKS⑩ CRYSTAL-TO-3.3V LVPECL FREQUENCY SYNTHESIZER W/INTEGRATED FANOUT BUFFER FEMTOCLOCKS⑩ CRYSTAL-TO-3.3V LVPECL FREQUENCY SYNTHESIZER W/INTEGRATED FANOUT BUFFER FEMTOCLOCKS⑩ CRYSTAL-TO-3.3V LVPECL FREQUENCY SYNTHESIZER W/INTEGRATED FANOUT BUFFER FEMTOCLOCKS⑩ CRYSTAL-TO-3.3V LVPECL FREQUENCY SYNTHESIZER W/INTEGRATED FANOUT BUFFER FEMTOCLOCKS⑩ CRYSTAL-TO-3.3V LVPECL FREQUENCY SYNTHESIZER W/INTEGRATED FANOUT BUFFER FEMTOCLOCKS⑩ CRYSTAL-TO-3.3V LVPECL FREQUENCY SYNTHESIZER W/INTEGRATED FANOUT BUFFER FEMTOCLOCKS⑩ CRYSTAL-TO-3.3V LVPECL FREQUENCY SYNTHESIZER W/INTEGRATED FANOUT BUFFER FEMTOCLOCKS⑩ CRYSTAL-TO-3.3V LVPECL FREQUENCY SYNTHESIZER W/INTEGRATED FANOUT BUFFER
Some common sense about power adapter
1. What do the nominal voltage and current of a power adapter (hereinafter referred to as power supply) mean? First of all, the nominal voltage of a power adapter usually refers to the open-circuit ou...
songbo Power technology
Linux learning discussion post!
Everyone is here to discuss issues related to Linux! If you have any questions, we will help you solve them! :handshake If you see something good, please post it to the Linux document above, thank you...
daicheng Linux and Android
Macro definition problem
#define DR_ADDRESS ((uint32_t)0x4001244C) //ADC1 DR is defined in ADC.C. I see that it needs to be defined in the main function of other routines....
yangyi1818 stm32/stm8
The MSP430 pin with 2.5V power supply inputs 3.6V level
I supply 2.5V to MSP430F2418, but the external interrupt signal input to its pin is a 3.6V rectangular pulse. As a result, the system consumes a lot of power and the current injected from that pin exc...
adam_zhang41 Microcontroller MCU
I thought there was something wrong with IAR, but it turns out that I can input in multiple locations at the same time.
In IAR, if you hold down the CTRL key and select multiple locations with the mouse, you can actually enter content in multiple selected locations at the same time. When I encountered this problem acci...
littleshrimp Integrated technical exchanges
About safertos in ROM
I see that 9b96 has a built-in safertos. My question is, how do I use this built-in rtos? Has TI also done all the underlying porting, and can users directly call the API provided by the rtos to progr...
bluehacker Microcontroller MCU

EEWorld
subscription
account

EEWorld
service
account

Automotive
development
circle

Robot
development
community

Index Files: 556  1867  1410  1226  2748  12  38  29  25  56 
Datasheet   0 1 2 3 4 5 6 7 8 9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Room 1530, 15th Floor, Building B, No. 18 Zhongguancun Street, Haidian District, Beijing Telephone: (010) 82350740 Postal Code: 100190
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved 京ICP证060456号 京ICP备10001474号-1 电信业务审批[2006]字第258号函 京公网安备 11010802033920号