ics650-36 Integrated Device Technology, ics650-36 Datasheet

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ics650-36

Manufacturer Part Number
ics650-36
Description
Networking And Pci Clock Source
Manufacturer
Integrated Device Technology
Datasheet
NETWORKING AND PCI CLOCK SOURCE
Description
The ICS650-36 is a low cost frequency generator designed
to support networking and PCI applications. Using
analog/digital Phase Locked-Loop (PLL) techniques, the
device uses a standard fundamental mode, inexpensive
crystal input of 25 MHz to produce four output clocks
supporting LAN, PCI, and 100M SDRAM functions.
The device also has a power down feature that tri-states the
clock outputs and turns off the PLL when the PDTS pin is
taken low.
Block Diagram
IDT™ / ICS™ NETWORKING AND PCI CLOCK SOURCE
25 MHz
crystal
input
S2:0
X1/ICLK
External capacitors
may be required.
X2
3
Oscillator/
Crystal
Buffer
Clock
Control
Select/
Circuit
1
GND
VDD
Features
NOTE: EOL for non-green parts to occur on 5/13/10
per PDN U-09-01
PLL1
PLL2
PLL3
Packaged in 16-pin TSSOP
Available in Pb (lead) free package
Replaces multiple crystals and oscillators
Input crystal or clock frequency of 25 MHz
Fixed reference output frequency of 25 MHz
Selectable output frequencies of 33.3, 33.333, 50,
66.666, 100, and 125 MHz
Duty cycle of 40/60
Operating voltage of 3.3 V
Advanced, low-power CMOS process
Industrial and commercial temperature ranges
3
3
PDTS
(all outputs and PLLs)
CLK1
CLK2
CLK3
REF
ICS650-36
DATASHEET
ICS650-36
REV E 102709

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ics650-36 Summary of contents

Page 1

... NETWORKING AND PCI CLOCK SOURCE Description The ICS650- low cost frequency generator designed to support networking and PCI applications. Using analog/digital Phase Locked-Loop (PLL) techniques, the device uses a standard fundamental mode, inexpensive crystal input of 25 MHz to produce four output clocks supporting LAN, PCI, and 100M SDRAM functions. ...

Page 2

... S1 S0 REF CLK1 CLK2 0 0 OFF 33. 33.333 33.333 33.333 66.666 66.666 66.666 33.333 33.333 33.333 66.666 33.30 50 Pin Description ICS650-36 CLK3 125 125 125 125 125 100 100 125 REV E 102709 ...

Page 3

... An optimum layout is one with all components on the same side of the board, minimizing vias through other signal layers. Other signal traces should be routed away from the ICS650-36. This includes signal traces just underneath the device layers adjacent to the ground plane layer used by the device. ...

Page 4

... NETWORKING AND PCI CLOCK SOURCE Absolute Maximum Ratings Stresses above the ratings listed below can cause permanent damage to the ICS650-36. These ratings, which are standard values for IDT commercially rated parts, are stress ratings only. Functional operation of the device at these or any other conditions above those indicated in the operational sections of the specifications is not implied. ...

Page 5

... PDTS low to tri-state OD 5 CLOCK SYNTHESIZER Min. Typ. Max. Units 3.135 3.3 3.465 100 0.8 V VDD-0.3 V 2.4 V 0.4 V ± 500 k 250 k Min. Typ. Max. Units 25 MHz 0 ±125 ps 150 ps 900 ps 0 ppm 350 ICS650-36 REV E 102709 ...

Page 6

... IDT™ / ICS™ NETWORKING AND PCI CLOCK SOURCE Symbol Conditions Still air JA 1 m/s air flow JA 3 m/s air flow JA JC (ICS650G-36LF (ICS650GI-36LF CLOCK SYNTHESIZER Min. Typ. Max. Units 78 C/W 70 C/W 68 C 650G36LF ###### YYWW 650GI36L ###### YYWW 1 8 ICS650-36 REV E 102709 ...

Page 7

... TSSOP 0 to +70 C 16-pin TSSOP 0 to +70 C 16-pin TSSOP 0 to +70 C 16-pin TSSOP -40 to +85 C 16-pin TSSOP -40 to +85 C 16-pin TSSOP -40 to +85 C 16-pin TSSOP -40 to +85 C ICS650-36 Inches* Max 0.047 0.006 0.041 0.012 0.008 0.201 0.177 0.030 8 0.004 c REV E 102709 ...

Page 8

... ICS650-36 NETWORKING AND PCI 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 to change without notice. IDT and the IDT logo are trademarks of Integrated Device Technology, Inc ...

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