MK2715-01STR [IDT]
Video Clock Generator, 17.7345MHz, PDSO16, 0.150 INCH, SOIC-16;
| 型号： | MK2715-01STR |
| 厂家： | 
INTEGRATED DEVICE TECHNOLOGY |
| 描述： | Video Clock Generator, 17.7345MHz, PDSO16, 0.150 INCH, SOIC-16 光电二极管 |
| 文件： | 总4页 (文件大小：26K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
MK2715
NTSC/PAL Clock Source
ICRO CLOC K
Description
Features
The MK2715 provides clocks for audio systems
using NTSC or PAL encoders and decoders.
The chip uses MicroClock’s proprietary analog
Phase-Locked Loop technology, and generates all
of the outputs from a 13.5 MHz input crystal or
clock. This chip can save component cost,
component count, board stuffing cost, and
increase reliability by removing mechanical quartz
devices from the system.
• Packaged in 16 pin narrow (150 mil) SOIC
• Selectable NTSC, PAL, PAL(M), and
PAL COMBO N frequencies
• 1X and 4X clock outputs
• Zero ppm error on NTSC and PAL clocks
• Power Down turns off chip, reduces power to
microWatt levels
MicroClock offers many other clocks for audio
and video systems. Consult MicroClock when
you need to remove crystals and oscillators from
your board.
• 5V ±10% supply voltage
Block Diagram
VDD GND
3
4
PD
Output
1X CLK
Buffer
2
Clock Synthesis
and Control
Circuitry
S1:0
Output
Buffer
4X CLK
13.5 MHz
crystal
or
clock
X1
Clock
Buffer/
Crystal
Output
Buffer
13.5 MHz
Oscillator
X2
MDS2715B
1
Revision 8157
Printed 9/19/97
MicroClock Division of ICS•1271 Parkmoor Ave.•San Jose•CA•95126•(408)295-9800tel•(408)295-9818fax
MK2715
NTSC/PAL Clock Source
ICRO CLOC K
Pin Assignment
Video Clock Select Table (MHz)
S1
S0
1XCLK
pin 10
3.5821
3.5756
4.4336
3.5795
4XCLK
pin 8
Video
Standard
PAL N
PAL M
PAL
X1/ICLK
VDD
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
X2
pin 11 pin 12
NC
0
0
1
1
0
1
0
1
14.3284
14.3024
17.7345
14.31818
VDD
REFOUT
PD
VDD
NTSC
GND
S0
GND
S1
GND
1XCLK
GND
4XCLK
16 pin narrow (150 mil) SOIC
Pin Descriptions
Number
Name
X1/ICLK
VDD
VDD
VDD
GND
GND
GND
4XCLK
GND
1XCLK
S1
Type Description
1
2
I
P
P
P
P
P
P
O
P
O
I
Crystal connection. Connect to 13.5000 MHz crystal, or clock input
Connect to +5V.
3
Connect to +5V.
4
Connect to +5V.
5
Connect to ground.
6
Connect to ground.
7
Connect to ground.
8
4X NTSC/PAL clock output. Determined by S0, S1 per Table above.
Connect to ground.
9
10
11
12
13
14
15
16
1X NTSC/PAL clock output. Determined by S0, S1 per Table above.
Clock Select 1. Determines 1XCLK and 4XCLK outputs per Table above.
Clock Select 0. Determines 1XCLK and 4XCLK outputs per Table above.
Power Down. Active low. All clocks stop low and all circuitry is off.
Buffered 13.5000 MHz clock output.
No Connect.
S0
I
PD
I
REFOUT
NC
O
-
X2
O
Crystal connection. Leave unconnected for clock input, or connect to 13.5000 MHz crystal.
Type: I = Input, O = output, P = power supply connection
MDS2715B
2
Revision 8157
Printed 9/19/97
MicroClock Division of ICS•1271 Parkmoor Ave.•San Jose•CA•95126•(408)295-9800tel•(408)295-9818fax
MK2715
NTSC/PAL Clock Source
ICRO CLOC K
Electrical Specifications (at 5.0V unless otherwise noted)
Parameter
Conditions
Minimum
Typical
Maximum
Units
ABSOLUTE MAXIMUM RATINGS (Note 1)
Supply Voltage, VDD
Referenced to GND
7
VDD+0.5
70
V
V
Inputs and Clock Outputs
Ambient Operating Temperature
Soldering Temperature
-0.5
0
°C
°C
°C
Max of 10 seconds
250
Storage Temperature
-65
150
DC CHARACTERISTICS
Operating Voltage, VDD
Input High Voltage, VIH
Input Low Voltage, VIL
Output High Voltage
4.5
2
5
5.5
0.8
V
V
V
IOH=-4mA
IOH=-25mA
IOL=25mA
No Load
VDD-0.4
2.4
V
Output High Voltage
V
Output Low Voltage
0.4
V
Operating Supply Current, IDD
Standby Supply Current, IDDPD
Short Circuit Current
22
20
mA
µA
mA
pF
ppm
ppm
No Load, PD=0V
Each output
S0, S1 pins
±100
7
Input Capacitance
Actual mean frequency error versus target, note 2 Ex 14.328, 3.582 MHz
0
Actual mean frequency error versus target
14.328, 3.582 MHz
14
AC CHARACTERISTICS
Input Frequency
13.5
MH z
ns
Output Clock Rise Time
0.8 to 2.0V
1.5
1.5
55
1
Output Clock Fall Time
2.0 to 0.8V
ns
Output Clock Duty Cycle
Time above 1.4V
45
49 to 51
%
Power down Time, PD taken low to clocks off
Power up Time, PD taken high to clocks stable
µs
10
ms
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. Provided the crystal is properly tuned, or an accurate 13.5000 MHz input clock is used.
External Components/Crystal Selection
The MK2715 requires a minimum number of external components for proper operation. For a crystal input,
a parallel resonant 13.5000 MHz crystal is recommended, with frequency tolerance of 50ppm or better.
Crystal capacitors should be connected from each of the pins X1 and X2 to Ground. The value (in pF) of
these crystal caps should be = (C -8)*2, where C is the crystal load capacitance in pF. For a clock input,
L
L
connect to X1 and leave X2 unconnected. Multiple VDD and GND pins should be connected together,
and a decoupling capacitor of 0.1µF must be connected between them very close to the chip. A 33W
terminating resistors can be used on clock outputs with traces longer than 1 inch.
MDS2715B
3
Revision 8157
Printed 9/19/97
MicroClock Division of ICS•1271 Parkmoor Ave.•San Jose•CA•95126•(408)295-9800tel•(408)295-9818fax
MK2715
NTSC/PAL Clock Source
ICRO CLOC K
Package Outline and Package Dimensions
16 pin SOIC narrow
Inches
Symbol Min
Millimeters
Min Max
Max
A
b
0.055 0.070 1.397
0.013 0.019 0.330
0.007 0.010 0.190
1.778
0.483
0.254
E
H
c
D
E
H
e
0.385 0.400 9.779 10.160
0.150 0.160 3.810
0.225 0.245 5.715
4.064
6.223
.050 BSC
0.016
0.01
1.27 BSC
h
0.406
0.254
h x 45°
Q
0.004
0.102
D
A
c
Q
b
e
Ordering Information
Part/Order Number
Marking
Package
Temperature
MK2715-01S
MK2715-01S
MK2715-01S
16 pin narrow SOIC
Add Tape & Reel
0-70°C
0-70°C
MK2715-01STR
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.
CHANGE HISTORY
Version Date first published
Comments
A
B
3/19/97
8/15/97
Original
Changed load capacitance equation on page 3.
MDS2715B
4
Revision 8157
Printed 9/19/97
MicroClock Division of ICS•1271 Parkmoor Ave.•San Jose•CA•95126•(408)295-9800tel•(408)295-9818fax
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