ics557-07 Integrated Device Technology, ics557-07 Datasheet

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ics557-07

Manufacturer Part Number
ics557-07
Description
2 1 Multiplexer Chip For Pci-e
Manufacturer
Integrated Device Technology
Datasheet
MDS 557-07 B
I n t e gra te d C i r c u i t S y s t e m s
Description
The ICS557-07 is a 2:1 HCSL multiplexer chip that
allows the user to select one of the two input pairs of
HCSL (Host Clock Signal Level) or LVDS inputs and
fans out to one pair of differential HCSL outputs. This
chip is suited especially for PCI-Express applications,
where there is a need to select the PCI-Express clock
locally from the PCI-E card or from the motherboard.
Block Diagram
IN1
IN1
IN2
IN2
P R E L I M I N A R Y I N F O R M A T I O N
525 Race Stre et, San Jo se, CA 9 5126
MUX
2 to 1
SEL
GND
VDD
3
3
1
PD
2:1 M
Features
Packaged in 16-pin TSSOP
Available in Pb (lead) free package
Operating voltage of 3.3 V
Low power consumption
Input differential clock of up to 200 MHz (can accept
LVDS, HCSL)
Output, one pair (HCSL, 0.7 V Current mode
differential pair)
Jitter 60 ps (peak-to-peak)
Operating frequency of 80 MHz to 200 MHz
OE
ULTIPLEXER
Rr (IREF)
te l (40 8) 2 97-12 01
CLK
CLK
C
ICS557-07
HIP FOR PCI
w w w. i c st . c o m
Revision 041405
-
E

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ics557-07 Summary of contents

Page 1

... Description The ICS557- 2:1 HCSL multiplexer chip that allows the user to select one of the two input pairs of HCSL (Host Clock Signal Level) or LVDS inputs and fans out to one pair of differential HCSL outputs. This ...

Page 2

... Connect to +3.3 V. Supply Voltage for output clocks. Connect to +3.3 V. Supply Voltage for output clocks. Connect to ground. Connect to ground. SEL=1 selects IN1/IN1. SEL =0 selects IN2/ IN2. Internal pull-up resistor. 2 ICS557-07 2:1 Multiplexer Chip for PCI-E Input Pair selected IN2/ IN2 IN1/ IN1 Revision 041405 ...

Page 3

... should be used. This crystal must have L less than 300 ppm of error across temperature in order for the ICS557-07 to meet PCI Express specifications. Crystal Capacitors Crystal capacitors are connected from pins X1 to ground and X2 to ground to optimize the accuracy of the output frequency. ...

Page 4

... Absolute Maximum Ratings Stresses above the ratings listed below can cause permanent damage to the ICS557-07. 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 ...

Page 5

... All outputs All outputs From power-up VDD=3.3 V Measured at crossing points Symbol Conditions θ Still air JA θ 1 m/s air flow JA θ 3 m/s air flow JA θ ICS557-07 2:1 Multiplexer Chip for PCI-E Min. Typ. Max. Units 80 200 MHz 80 200 MHz 660 700 850 mV -150 0 mV ...

Page 6

... In te grated Circuit Systems 525 Ra ce Street, San Jose, CA 9512 6 6*IREF IREF =2 Ω R 475 L L Ω L 50.2 50.2 700 mV 500 ps 500 0.52 V 0.52 V 0.175 V 0.175 V 6 ICS557-07 2:1 Multiplexer Chip for PCI-E Ω Revision 041405 tel (4 08) 297-1 201 ...

Page 7

... YYWW is the last two digits of the year, and the week number that the part was assembled. 3. “LF” denotes Pb free package. 4. Bottom marking: (origin). Origin = country of origin if not USA. MDS 557- grated Circuit Systems 525 Ra ce Street, San Jose, CA 9512 6 Marking Diagram (Pb free ICS557-07 2:1 Multiplexer Chip for PCI 557G07LF ###### YYWW 1 8 Revision 041405 ...

Page 8

... Basic H 6.40 Basic L 0. Shipping Packaging Tubes 16-pin TSSOP Tape and Reel 16-pin TSSOP Tubes 16-pin TSSOP Tape and Reel 16-pin TSSOP 8 tel (4 08) 297-1 201 ICS557-07 2:1 Multiplexer Chip for PCI-E Inches Max Min Max 1.20 -- 0.047 0.15 0.002 0.006 0.30 0.007 0.012 0.20 0.0035 0.008 5 ...

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