MK1410/MK1411
NTSC/PAL Clock Source
MDS 1410/11 E
1
Revision 102298
Printed 11/15/00
Integrated Circuit Systems, Inc.525 Race StreetSan JoseCA95126(408)295-9800telwww.icst.com
The MK1410 and MK1411 are the ideal way to
generate clocks for NTSC/PAL video encoders
and decoders. Stored in the devices are two or four
popular frequencies for NTSC and PAL. In an 8
pin SOIC, the chips can save component count,
board space, and cost over surface mount crystals
and oscillators, and increase reliability by
eliminating one or two mechanical devices from
the board. The power down pin turns off the
device, drawing less than 20A.
MicroClock offers many other clocks for
computers and computer peripherals. Consult
MicroClock when you need to remove crystals and
oscillators from your board.
Block Diagram
Description
Features
Packaged in 8 pin SOIC
Ideal for devices such as AD722/AD725 from
Analog Devices and Brooktree BT819
Input crystal or clock frequency of 14.31818 MHz
Power down turns off chip
Frequencies are within 5 ppm with properly tuned
reference crystal or accurate input clock
Low jitter
Output clock frequencies of 14.31818MHz,
17.7345MHz, 28.6364MHz, or 35.46896MHz
25mA drive capability at TTL levels
3.3V or 5V supply voltage
Advanced, low power CMOS process
Insensitive to input clock duty cycle
Clock
Buffer/
Crystal
Oscillator
VDD
GND
Clock Synthesis
and Control
Circuitry
14.31818 MHz
crystal
or
clock
X1
X2
S0
Output
Buffer
NTSC or
PAL clock
S1
PD
Output
Buffer
14.31818 MHz
(MK1410 only)
MK1410/MK1411
NTSC/PAL Clock Source
MDS 1410/11 E
2
Revision 102298
Printed 11/15/00
Integrated Circuit Systems, Inc.525 Race StreetSan JoseCA95126(408)295-9800telwww.icst.com
MK1410 MK1411
Name
Type Description
1
1
X1/ICLK
I
Crystal Connection. Connect to a 14.31818 MHz crystal or clock.
2
2
VDD
P
Connect to +3.3V or +5V.
3
3
GND
P
Connect to ground.
4
-
14.3M
O
14.31818 MHz buffered crystal clock output.
5
4
NPCLK
O
NTSC or PAL output clock. Selected by SEL pin per tables above.
-
5
S1
I
Select pin. Selects NTSC or PAL frequency per tables above.
6
-
SEL
I
Select pin. Selects NTSC or PAL frequency per tables above.
-
6
S0
I
Select pin. Selects NTSC or PAL frequency per tables above. Internal pull-up.
7
7
PD
I
Power Down. Active low. Clocks stop low.
8
8
X2
O
Crystal Connection to a 14.31818 MHz crystal, or leave unconnected for clock input.
Pin Descriptions
Key: I = Input, O = output, P = power supply connection
Pin Assignment
External Components/Crystal Selection
A minimum number
of external components are required for proper oscillation. For a crystal input, a
parallel resonant 14.31818 MHz, 18pF load, crystal is recommended. Do not use a crystal with lower load
capacitance. It is possible to use a crystal with higher load capacitance. In this case, external capacitors must
be connected from each of X1 and X2 to ground. The value of these caps equals 2(C
L
-18), where C
L
is the
crystal load capacitance in pF. So for a 20 pF crystal, use 4 pF caps. The frequency tolerance of the crystal
should be 30ppm or better. For a clock input, connect to X1 and leave X2 unconnected. A decoupling
capacitor of 0.1F should be connected between VDD and GND on pins 2 and 3, and a 33
terminating
resistor should be used on the clock output if the trace is longer than 1 inch.
1
8
2
3
4
7
6
5
X1/ICLK
PD
GND
X2
VDD
SEL
NPCLK
MK1410
14.3M
S1
S0
NPCLK
ppm error
pin 5
pin 6
pin 4 (MHz)
0
0
35.46896
5 ppm
0
1
17.73448
5 ppm
1
0
28.63636
0 ppm
1
1
14.31818
0 ppm
NTSC/PAL Clock - MK1411
SEL
NPCLK
ppm error
pin 6
pin 5 (MHz)
0
17.73448
5 ppm
1
14.31818
0 ppm
NTSC/PAL Clock - MK1410
1
8
2
3
4
7
6
5
X1/ICLK
PD
GND
X2
VDD
S0
NPCLK
MK1411
S1
MK1410/MK1411
NTSC/PAL Clock Source
MDS 1410/11 E
3
Revision 102298
Printed 11/15/00
Integrated Circuit Systems, Inc.525 Race StreetSan JoseCA95126(408)295-9800telwww.icst.com
Notes:
1. Stresses beyond those listed under Absolute Maximum Ratings could cause permanent damage to the device. Prolonged exposure
to levels above the operating limits but below the Absolute Maximums may affect device reliability.
2. Typical values are at 25C.
Electrical Specifications
Parameter
Conditions
Minimum
Typical
Maximum
Units
ABSOLUTE MAXIMUM RATINGS (note 1)
ABSOLUTE MAXIMUM RATINGS (note 1)
Supply Voltage, VDD
Referenced to GND
7
V
Inputs
Referenced to GND
-0.5
VDD+.5V
V
Clock Outputs
Referenced to GND
-0.5
VDD+.5V
V
Ambient Operating Temperature
0
70
C
Soldering Temperature
Max of 10 seconds
260
C
Storage temperature
-65
150
C
DC CHARACTERISTICS (at 5.0V unless otherwise noted)
DC CHARACTERISTICS (at 5.0V unless otherwise noted)
DC CHARACTERISTICS (at 5.0V unless otherwise noted)
Operating Voltage, VDD
3.0
5.5
V
Input High Voltage, VIH, input clock only
Clock input
3.5
2.5
V
Input Low Voltage, VIL, input clock only
Clock input
2.5
1.5
V
Input High Voltage, VIH
2
V
Input Low Voltage, VIL
0.8
V
Output High Voltage, VOH
IOH=-4mA
VDD-0.4
V
Output High Voltage, VOH
IOH=-25mA
2.4
V
Output Low Voltage, VOL
IOL=25mA
0.4
V
Operating Supply Current, IDD, 5.0V
No Load, 17.7 MHz
16
mA
Operating Supply Current, IDD, 3.0V
No Load, 17.7 MHz
9
mA
Power Down Supply Current, IDDPD, 5V
No Load
25
A
Input Capacitance
SEL, PD pins
7
pF
Actual Mean Frequency versus Target
With exact crystal
5
5
ppm
AC CHARACTERISTICS (at 5.0V unless otherwise noted)
AC CHARACTERISTICS (at 5.0V unless otherwise noted)
AC CHARACTERISTICS (at 5.0V unless otherwise noted)
Input Clock or Crystal Frequency
14.31818
14.31818
MHz
Input Crystal Accuracy
30
ppm
Input Clock Duty Cycle
Time above 2.5V
20
80
%
Output Clock Rise Time
0.8 to 2.0V
1.5
ns
Output Clock Fall Time
2.0 to 0.8V
1.5
ns
Output Clock Duty Cycle
Time above 1.5V
45
50
55
%
Absolute Maximum Clock Period Jitter
Variation from mean
130
ps
One Sigma Clock Period Jitter
40
ps
Application Note
The MK1410/11 is commonly used to drive an AD722/4 NTSC/PAL encoder. If the encoder is not
displaying the proper color, this means that the input frequency to the MK1410/11 is incorrect. This is
caused by using the wrong type of crystal, or by connecting incorrect capacitors to X1 and X2. To get
correct color, specify the crystal as listed on page 2. The MK1410/11 has internal crystal capacitors set for a
crystal with 18 pF load capacitance. Contact MicroClock if unable to obtain the listed crystal.
MK1410/MK1411
NTSC/PAL Clock Source
MDS 1410/11 E
4
Revision 102298
Printed 11/15/00
Integrated Circuit Systems, Inc.525 Race StreetSan JoseCA95126(408)295-9800telwww.icst.com
While the information presented herein has been checked for both accuracy and reliability, MicroClock Incorporated assumes no responsibility for either its use or for the
infringement of any patents or other rights of third parties, which would result from its use. No other circuits, patents, or licenses are implied. This product is intended for use in
normal commercial applications. Any other applications such as those requiring extended temperature range, high reliability, or other extraordinary environmental requirements
are not recommended without additional processing by MicroClock. MicroClock reserves the right to change any circuitry or specifications without notice. MicroClock does not
authorize or warrant any MicroClock product for use in life support devices or critical medical instruments.
Package Outline and Package Dimensions
Inches
Inches
Millimeters
Millimeters
Symbol
Min
Max
Min
Max
A
0.055
0.068
1.397
1.7272
b
0.013
0.019
0.330
0.483
D
0.185
0.200
4.699
5.080
E
0.150
0.160
3.810
4.064
H
0.225
0.245
5.715
6.223
e .050 BSC
.050 BSC
1.27 BSC
1.27 BSC
h
0.015
0.381
Q
0.004
0.01
0.102
0.254
8 pin SOIC
Ordering Information
Part/Order Number
Marking
Package
Temperature
MK1410S
MK1410S
8 pin SOIC
0-70C
MK1410STR
MK1410S
Add tape and reel
0-70C
MK1411S
MK1411S
8 pin SOIC
0-70C
MK1411STR
MK1411S
Add tape and reel
0-70C
c
A
b
D
E
H
e
h x 45
Q
Pin 1
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