ICS650R-21 IDT, Integrated Device Technology Inc, ICS650R-21 Datasheet

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ICS650R-21

Manufacturer Part Number
ICS650R-21
Description
IC CLK SOURCE SYSTEM PER 20-SSOP
Manufacturer
IDT, Integrated Device Technology Inc
Type
Clock/Frequency Synthesizerr
Datasheet

Specifications of ICS650R-21

Pll
Yes
Input
Clock, Crystal
Output
CMOS
Number Of Circuits
1
Ratio - Input:output
1:8
Differential - Input:output
No/No
Frequency - Max
66.67MHz
Divider/multiplier
No/No
Voltage - Supply
3 V ~ 5.5 V
Operating Temperature
0°C ~ 70°C
Mounting Type
Surface Mount
Package / Case
20-SSOP
Frequency-max
67MHz
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Other names
650R-21

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
ICS650R-21I
Manufacturer:
ICS
Quantity:
68
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ICS650R-21ILF
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SMI
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7 385
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ICS650R-21LF
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IDT
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324
Part Number:
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14 774
SYSTEM PERIPHERAL CLOCK SOURCE
Description
The ICS650-21 is a low cost, low-jitter, high-performance
clock synthesizer for system peripheral applications. Using
analog/digital Phase Locked Loop (PLL) techniques, the
device accepts a parallel resonant 25 MHz crystal input to
produce up to eight output clocks. The device provides
clocks for PCI, SCSI, Fast Ethernet, Ethernet, USB, and
AC97. The user can select one of three USB frequencies
and also one of two AC97 audio frequencies. The OE pin
puts all outputs into a high-impedance state for board level
testing. All frequencies are generated with less than one
ppm error, meeting the demands of SCSI and Ethernet
clocking.
Block Diagram
IDT™ / ICS™ SYSTEM PERIPHERAL CLOCK SOURCE
Crystal or Clock
25 MHz
ASEL
USEL
PSEL1:0
X1/ICLK
X2
Optional crystal
capacitors
2
Oscillator
Crystal
GND
VDD
3
2
1
Features
Synthesis
Circuitry
Packaged in 20-pin SSOP (QSOP)
Pb (lead) free package, RoHS compliant
Lower jitter version of ICS650-01
Operating voltage of 3.3 V or 5 V
Zero ppm synthesis error in all clocks
Inexpensive 25 MHz crystal or clock input
Provides Ethernet and Fast Ethernet clocks
Provides SCSI clocks
Provides PCI clocks
Selectable AC97 audio clock
Selectable USB clock
OE pin tri-states the outputs for testing
Selectable frequencies on three clocks
Duty cycle of 45/55 for Processor clock and Audio clock
Advanced, low-power CMOS process
Industrial temperature range available
Clock
OE (all outputs)
3
20 MHz
Processor
Clocks
25 MHz
Audio Clock
USB Clock
ICS650-21
DATASHEET
ICS650-21
REV J 051310

Related parts for ICS650R-21

ICS650R-21 Summary of contents

Page 1

SYSTEM PERIPHERAL CLOCK SOURCE Description The ICS650- low cost, low-jitter, high-performance clock synthesizer for system peripheral applications. Using analog/digital Phase Locked Loop (PLL) techniques, the device accepts a parallel resonant 25 MHz crystal input to produce up to ...

Page 2

ICS650-21 SYSTEM PERIPHERAL CLOCK SOURCE Pin Assignment 1 20 USEL X1/ICLK VDD 4 17 VDD 5 16 GND 6 15 UCLK 7 14 20M 8 13 ACLK 9 12 25M 10 11 20-pin (150 mil) ...

Page 3

ICS650-21 SYSTEM PERIPHERAL CLOCK SOURCE Pin Pin Pin Number Name Type 13 OFF/14.318M Output 14 GND Power 15 ASEL Input 16 VDD Power 17 PCLK3 Output 18 PCLK2 Output 19 PSEL0 Input 20 PSEL1 Input External Components The ICS650-21 requires ...

Page 4

ICS650-21 SYSTEM PERIPHERAL CLOCK SOURCE Absolute Maximum Ratings Stresses above the ratings listed below can cause permanent damage to the ICS650-21. These ratings, which are standard values for IDT commercially rated parts, are stress ratings only. Functional operation of the ...

Page 5

ICS650-21 SYSTEM PERIPHERAL CLOCK SOURCE AC Electrical Characteristics Unless stated otherwise, VDD = 3.3 V ±5%, Ambient Temperature 0 to +70 C Parameter Input Frequency Output Clocks Accuracy (synthesis error) Output Rise Time Output Fall Time Output Clock Duty Cycle ...

Page 6

... Ordering Information Part / Order Number Marking 650R-21LF ICS650R-21L 650R-21LFT ICS650R-21L 650R-21ILF 650R-21ILF 650R-21ILFT 650R-21ILF “LF” suffix to the part number are the Pb-Free configuration and are RoHS compliant. While the information presented herein has been checked for both accuracy and reliability, Integrated Device Technology (IDT) assumes no responsibility for either its use or for the infringement of any patents or other rights of third parties, which would result from its use ...

Page 7

ICS650-21 SYSTEM PERIPHERAL CLOCK SOURCE Revision History Rev. Originator Date Description of Change G P. Griffith 02/15/06 Added “Power-up Time” spec in AC chars. H 11/04/09 Added EOL note for non-green parts. J 05/13/10 Removed EOL note and non-green parts. ...

Page 8

ICS650-21 SYSTEM PERIPHERAL CLOCK SOURCE Innovate with IDT and accelerate your future networks. Contact: www.IDT.com For Sales 800-345-7015 408-284-8200 Fax: 408-284-2775 Corporate Headquarters Integrated Device Technology, Inc. www.idt.com © 2006 Integrated Device Technology, Inc. All rights reserved. Product specifications subject ...

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