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Integrated Device Technology Electronic Components Datasheet

ICS548A-03 Datasheet

LOW SKEW CLOCK INVERTER AND DIVIDER

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LOW SKEW CLOCK INVERTER AND DIVIDER
DATASHEET
ICS548A-03
Description
The ICS548A-03 is a low cost, low skew, high-performance
general purpose clock designed to produce a set of one
output clock, one inverted output clock, and one clock
divided-by-two. Using our patented Phase-Locked Loop
(PLL) techniques, the device operates from a frequency
range of 10 MHz to 120 MHz in the PLL mode, and up to
160 MHz in the non-PLL mode.
In applications that need to maintain low phase noise in the
clock tree, the non-PLL (when S3=S2=1) modes should be
used.
This chip is not a zero delay buffer. Many applications may
be able to use the ICS527 for zero delay dividers.
Features
Packaged in 16-pin SOIC (150 mil)
Input clock up to 160 MHz in the non-PLL mode
Provides clock outputs of CLK, CLK, and CLK/2
Low skew (500 ps) on CLK, CLK, and CLK/2
All outputs can be tri-stated
Entire chip can be powered down by changing one or two
select pins
3.3 V operating range
Available in commercial and industrial temperature
ranges
RoHS 5 (green) or RoHS 6 (green and lead free)
compliant package
Block Diagram
S3:S0
4
Clock
input
Input
Buffer
VDD
2
GND
2
Clock
Synthesis
and Divider
Circuitry
CLK
CLK
CLK/2
OE (all outputs)
IDT™ / ICS™ LOW SKEW CLOCK INVERTER AND DIVIDER
1
ICS548A-03 REV C 063006



Integrated Device Technology Electronic Components Datasheet

ICS548A-03 Datasheet

LOW SKEW CLOCK INVERTER AND DIVIDER

No Preview Available !

ICS548A-03 pdf
ICS548A-03
LOW SKEW CLOCK INVERTER AND DIVIDER
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Pin Assignment
ICLK
VDD
VDD
S3
GND
GND
S2
S0
1
2
3
4
5
6
7
8
16 DC
15 DC
14 DC
13 CLK
12 CLK
11 CLK/2
10 OE
9 S1
CLK, CLK, and CLK/2 Select Table (MHz)
S3 S2 S1 S0 CLK, CLK
0 000
Low
0 001
Input/4
0 010
Input
0 011
Input/2
0 100
Low
0 1 0 1 Input x 2
0 110
Input/5
0 111
Input/3
1 000
Low
1 001
Input/4
1 010
Input
1 011
Input/2
1 100
Low
1 101
Input/6
1 110
Input/8
1 111
Input/2
CLK/2
Low
Input/8
Input/2
Input/4
Low
Input
Input/10
Input/6
Low
Input/8
Input/2
Input/4
Low
Input/12
Input/16
Input/4
PLL
OFF
ON
ON
ON
OFF
ON
ON
ON
OFF
ON
ON
ON
OFF
OFF
OFF
OFF
Input Range
Power Down
30 - 120
20 - 40
20 - 80
Power Down
10 - 20
40 - 120
25 - 120
Power Down
30 - 120
20 - 40
20 - 80
Power Down
0 - 160
0 - 160
0 - 80
CLOCK DIVIDER
IDT™ / ICS™ LOW SKEW CLOCK INVERTER AND DIVIDER
2
ICS548A-03 REV C 063006



Integrated Device Technology Electronic Components Datasheet

ICS548A-03 Datasheet

LOW SKEW CLOCK INVERTER AND DIVIDER

No Preview Available !

ICS548A-03 pdf
ICS548A-03
LOW SKEW CLOCK INVERTER AND DIVIDER
www.DataSheet4U.com
CLOCK DIVIDER
Pin Descriptions
Pin
Number
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Pin
Name
ICLK
VDD
VDD
S3
GND
GND
S2
S0
S1
OE
CLK/2
CLK
CLK
DC
DC
DC
Pin
Type
Pin Description
Input Clock input.
Power Connect to 3.3 V.
Power Connect to 3.3 V.
Input Clock Select 3. See table on page 2.
Power Connect to ground.
Power Connect to ground.
Input Clock Select 2. See table on page 2.
Input Clock Select 0. See table on page 2.
Input Clock Select 1. See table on page 2.
Input Output Enable. Tri-states all clock outputs when low.
Output Clock output divided by 2. See table on page 2.
Output Clock output. See table on page 2.
Output Inverted clock output. See table on page 2.
— Don’t connect. Do not connect anything to this pin.
— Don’t connect. Do not connect anything to this pin.
— Don’t connect. Do not connect anything to this pin.
External Components
The ICS548A-03 requires a minimum number of external components for proper operation. Decoupling capacitors
of 0.01µF should be connected between pins 3 and 5, as close to the device as possible. Connect pin 2 directly to
pin 3, and pin 6 directly to pin 5. A series termination resistor of 33should be used on all clock outputs, as close
to the device as possible. Leave any unused clock outputs floating. There are no pull-up resistors on the input pins,
and they may be connected directly to VDD or ground.
IDT™ / ICS™ LOW SKEW CLOCK INVERTER AND DIVIDER
3
ICS548A-03 REV C 063006




Part Number ICS548A-03
Description LOW SKEW CLOCK INVERTER AND DIVIDER
Maker Integrated Device Technology
Total Page 7 Pages
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