ICS557G-06LFT IDT, Integrated Device Technology Inc, ICS557G-06LFT Datasheet

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ICS557G-06LFT

Manufacturer Part Number
ICS557G-06LFT
Description
IC CLK BUFFER 1:4 HCSL 20-TSSOP
Manufacturer
IDT, Integrated Device Technology Inc
Type
Clock Bufferr
Datasheet

Specifications of ICS557G-06LFT

Input
HCSL, LVDS
Output
HCSL, LVDS
Frequency - Max
200MHz
Voltage - Supply
3.135 V ~ 3.465 V
Operating Temperature
0°C ~ 70°C
Mounting Type
Surface Mount
Package / Case
20-TSSOP
Frequency-max
200MHz
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
557G-06LFT

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ICS557G-06LFT
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Part Number:
ICS557G-06LFT
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20 000
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ICS557G-06LFT
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2 TO 4 DIFFERENTIAL CLOCK MUX
Description
The ICS557-06 is a two to four differential clock mux
designed for use in PCI-Express applications. The device
selects one of the two differential HCSL or LVDS input pairs
and fans out to four pairs of differential HCSL or LVDS
outputs.
Block Diagram
IDT® 2 TO 4 DIFFERENTIAL CLOCK MUX
IN1
IN1
IN2
IN2
MUX
2 to 1
SEL
GND
VDD
2
2
PD
1
Features
Packaged in 20-pin TSSOP
Pb (lead) free packaging
Operating voltage of 3.3 V
Low power consumption
Input differential clock of up to 200 MHz for HCSL and up
to 100 MHz for LVDS
Jitter 60 ps (cycle-to-cycle)
Output-to-output skew of 50 ps
Available in industrial temperature range (-40 to +85°C)
OE
Rr (IREF)
CLKA
CLKA
CLKB
CLKB
CLKC
CLKC
CLKD
CLKD
ICS557-06
DATASHEET
ICS557-06
REV J 121510

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ICS557G-06LFT Summary of contents

Page 1

TO 4 DIFFERENTIAL CLOCK MUX Description The ICS557- two to four differential clock mux designed for use in PCI-Express applications. The device selects one of the two differential HCSL or LVDS input pairs and fans out to ...

Page 2

ICS557- DIFFERENTIAL CLOCK MUX Pin Assignment SEL 1 VDDIN 2 IN1 3 IN1 IN2 6 7 IN2 GND 10 IREF 20-pin (173 mil) TSSOP Pin Descriptions Pin Pin Pin Name Type ...

Page 3

ICS557- DIFFERENTIAL CLOCK MUX Application Information Decoupling Capacitors As with any high-performance mixed-signal IC, the ICS557-06 must be isolated from system power supply noise to perform optimally. Decoupling capacitors of 0.01µF must be connected between each VDD ...

Page 4

ICS557- DIFFERENTIAL CLOCK MUX Output Structures IREF =2.3 mA See Output Termination Sections - Pages Ω R 475 R General PCB Layout Recommendations For optimum device performance and lowest output phase noise, the following ...

Page 5

ICS557- DIFFERENTIAL CLOCK MUX PCI-Express Layout Guidelines Common Recommendations for Differential Routing L1 length, Route as non-coupled 50 ohm trace. L2 length, Route as non-coupled 50 ohm trace. L3 length, Route as non-coupled 50 ohm trace. R ...

Page 6

ICS557- DIFFERENTIAL CLOCK MUX LVDS Compatible Layout Guidelines Alternative T ermination for LVDS and other Common Differential Signals Vdiff Vp-p Vcm 0.45v 0.22v 1.08 0.58 0.28 0.6 0.80 0.40 0.6 0.60 0.3 1.2 R1a = R1b = ...

Page 7

ICS557- DIFFERENTIAL CLOCK MUX Absolute Maximum Ratings Stresses above the ratings listed below can cause permanent damage to the ICS557-06. These ratings are stress ratings only. Functional operation of the device at these or any other conditions ...

Page 8

ICS557- DIFFERENTIAL CLOCK MUX AC Electrical Characteristics - CLKOUTA/CLKOUTB Unless stated otherwise, VDD=3.3 V ±5%, Ambient Temperature -40 to +85° C Parameter Symbol Input Frequency Output Frequency 1,2 Input High Voltage V IH 1,2 Input Low Voltage ...

Page 9

... Bottom marking: (origin). Origin = country of origin if not USA. IDT® DIFFERENTIAL CLOCK MUX Symbol Conditions θ Still air JA θ 1 m/s air flow JA θ 3 m/s air flow JA θ JC (ICS557GI-06LF PCIE FAN OUT BUFFER Min. Typ. Max. Units ° C/W 93 ° C/W 78 ° C/W 65 ° ...

Page 10

ICS557- DIFFERENTIAL CLOCK MUX Package Outline and Package Dimensions Package dimensions are kept current with JEDEC Publication No INDEX AREA Ordering Information Part / Order Number Marking 557G-06LF See Page ...

Page 11

ICS557- DIFFERENTIAL CLOCK MUX 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 © 2010 Integrated Device Technology, Inc. All rights reserved. Product ...

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