ics557-08 Integrated Device Technology, ics557-08 Datasheet

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ics557-08

Manufacturer Part Number
ics557-08
Description
2 1 Multiplexer Chip For Pci-express
Manufacturer
Integrated Device Technology
Datasheet
2:1 MULTIPLEXER CHIP FOR PCI-EXPRESS
Description
The ICS557-08 is a 2:1 multiplexer chip that allows the user
to select one of the two HCSL (Host Clock Signal Level) or
LVDS input pairs and fan out to one pair of differential HCSL
or LVDS outputs. This chip is suited especially for
PCI-Express applications, where there is a need to select
the PCI-Express clock either locally from the PCI-E card or
from the motherboard.
Block Diagram
IDT™ / ICS™ 2:1 MULTIPLEXER CHIP FOR PCI-EXPRESS
IN1
IN1
IN2
IN2
MUX
2 to 1
SEL
GND
VDD
3
3
PD
1
Features
Packaged in 16-pin TSSOP
Available in Pb (lead) free package
Operating voltage of 3.3 V
Low power consumption
Input clock frequency of up to 200 MHz for HCSL and up
to 100 MHz for LVDS
OE
Rr (IREF)
CLK
CLK
ICS557-08
DATASHEET
ICS557-08
REV E 062607

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ics557-08 Summary of contents

Page 1

... MULTIPLEXER CHIP FOR PCI-EXPRESS Description The ICS557- 2:1 multiplexer chip that allows the user to select one of the two HCSL (Host Clock Signal Level) or LVDS input pairs and fan out to one pair of differential HCSL or LVDS outputs. This chip is suited especially for PCI-Express applications, where there is a need to select the PCI-Express clock either locally from the PCI-E card or from the motherboard ...

Page 2

... Connect to +3.3 V. Supply Voltage for Output Clocks. Connect to ground. Connect to ground. HCSL/LVDS Complimentary output clock . HCSL/LVDS True output clock. SEL=1 selects IN1/IN1. SEL =0 selects IN2/ IN2. Internal pull-up resistor. 2 PCIE MULTIPLEXER Input Pair Selected IN2/ IN2 IN1/ IN1 ICS557-08 REV E 062607 ...

Page 3

... These resistor values and their allowable locations are shown in detail in the PCI-Express Layout Guidelines section. The ICS557-08 can also be configured for LVDS compatible voltage levels. See the LVDS Compatible Layout Guidelines section. 3 ...

Page 4

... Other signal traces should be routed away from the ICS557-08.This includes signal traces just underneath the device layers adjacent to the ground plane layer used by the device. ...

Page 5

... PCIE MULTIPLEXER Dimension or Value Unit 0.5 max inch 0.2 max inch 0.2 max inch 33 ohm 49.9 ohm Dimension or Value Unit 2 min to 16 max inch 1.8 min to 14.4 max inch Dimension or Value Unit 0. max inch 0.225 min to 12.6 max inch L4 L4’ PCI-Express Load or Connector ICS557-08 REV E 062607 ...

Page 6

... IDT™ / ICS™ 2:1 MULTIPLEXER CHIP FOR PCI-EXPRESS L1’ L2’ 1250 mV 1150 mV 6 PCIE MULTIPLEXER Dimension or Value Unit 0.5 max inch 0.2 max inch 100 ohm 100 ohm 150 ohm L3’ LVDS Device Load ICS557-08 REV E 062607 ...

Page 7

... MULTIPLEXER CHIP FOR PCI-EXPRESS Absolute Maximum Ratings Stresses above the ratings listed below can cause permanent damage to the ICS557-08. These ratings 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. Exposure to absolute maximum rating conditions for extended periods can affect product reliability ...

Page 8

... Typ. Max. Units 200 MHz 100 MHz 660 700 850 mV -150 0 mV 250 350 450 mV 1.125 1.25 1.375 V 660 700 850 mV -150 250 350 550 mV 140 mV 175 332 700 ps 175 344 700 ps 125 µs 10 µ ICS557-08 REV E 062607 ...

Page 9

... Symbol Conditions θ Still air JA θ 1 m/s air flow JA θ 3 m/s air flow JA θ JC Marking Diagram 9 8 Marking Diagram PCIE MULTIPLEXER Min. Typ. Max. Units ° C/W 93 ° C/W 78 ° C/W 65 ° C/W 20 (ICS557GI-08 557GI-08 ###### YYWW (ICS557GI-08LF 557GI08L ###### YYWW 1 8 ICS557-08 REV E 062607 ...

Page 10

... L Package Temperature 16-pin TSSOP 0 to +70° C 16-pin 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 ICS557-08 c REV E 062607 ...

Page 11

... Added industrial temp range; updated PCI-Express Waveform diagram to include 0.525 V; changed “Supply Voltage, VDD” spec in Absolute Max. Ratings from 5 changed CLKOUT to CLK and CLK ; added marking diagrams for I-temp device. Removed Cycle-to-cycle jitter spec. Added 27mV to VOL max. spec 11 PCIE MULTIPLEXER ICS557-08 REV E 062607 ...

Page 12

... ICS557-08 2:1 MULTIPLEXER CHIP FOR PCI-EXPRESS 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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