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ICS557-08 Datasheet

2:1 MULTIPLEXER

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2:1 MULTIPLEXER CHIP FOR PCI-EXPRESS GEN1
DATASHEET
ICS557-08
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)
input pairs and fans 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.
Features
Packaged in 16-pin TSSOP
Pb (lead) free package
Operating voltage of 3.3 V
Low power consumption
Input clock frequency of up to 200 MHz
For PCIe Gen2/3 applications, see the 5V41068A
Block Diagram
VDD
OE
3
IN1
IN1
CLK
MUX
IN2
2 to 1
IN2
CLK
3
SEL GND
PD
Rr (IREF)
IDT® 2:1 MULTIPLEXER CHIP FOR PCI-EXPRESS GEN1
1
ICS557-08 REV L 112111


Renesas Electronics Components Datasheet

ICS557-08 Datasheet

2:1 MULTIPLEXER

No Preview Available !

ICS557-08
2:1 MULTIPLEXER CHIP FOR PCI-EXPRESS GEN1
PCIE MULTIPLEXER
Pin Assignment
VDD 1
IN1 2
IN1 3
PD 4
IN2 5
IN2 6
OE 7
GND 8
16 SEL
15 CLK
14
CLK
13 GND
12 GND
11 VDD
10 VDD
9
IREF
16-pin (173 mil) TSSOP
Select Table
SEL
0
1
Input Pair Selected
IN2/ IN2
IN1/ IN1
Pin Descriptions
Pin Pin Name Pin Type
Pin Description
1
VDD
Power Connect to +3.3 V. Supply voltage for Input clocks.
2
IN1
Input HCSL true input signal 1.
3
IN1
Input HCSL complimentary input signal 1.
4
PD
Input Powers down the chip and tri-states outputs when low. Internal pull-up
5
IN2
Input HCSL true input signal 2.
6
IN2
Input HCSL complimentary input signal 2.
7
OE
Input Provides output or, tri-states output (High = enable outputs; Low = disable).
Internal pull-up resistor.
8
GND
Power Connect to ground.
9
IREF
Output Precision resistor attached to this pin is connected to the internal current
10
VDD
Power Connect to +3.3 V. Supply Voltage for Output Clocks.
11
VDD
Power Connect to +3.3 V. Supply Voltage for Output Clocks.
12
GND
Power Connect to ground.
13
GND
Power Connect to ground.
14
CLK
Output HCSL/LVDS Complimentary output clock .
15
CLK
Output HCSL/LVDS True output clock.
16
SEL
Input SEL=1 selects IN1/IN1. SEL =0 selects IN2/ IN2. Internal pull-up resistor.
IDT® 2:1 MULTIPLEXER CHIP FOR PCI-EXPRESS GEN1
2
ICS557-08 REV L 112111



Part Number ICS557-08
Description 2:1 MULTIPLEXER
Maker Renesas
Total Page 3 Pages
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ICS557-08 Datasheet PDF





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