DATASHEET
HDTV CLOCK SYNTHESIZER MK2716
IDT™
HDTV CLOCK SYNTHESIZER 1
MK2716 REV G 051310
Description
The MK2716 is a low-cost, low jitter, high-performance PLL
clock synthesizer designed to produce the 74.176 MHz and
74.25 MHz clocks necessary for HDTV systems. Using
IDT’s patented analog Phase-Locked Loop (PLL)
techniques, the device accepts a 27 MHz crystal or clock
input. The zero ppm synthesis error exactly locks the
display to the digital stream.
IDT manufactures the largest variety multimedia clock
synthesizers for all applications. Consult IDT to eliminate
crystals and oscillators from your board.
For applications that require lower jitter, such as SDI and
pixel clocks, use the ICS664.
Features
•Packaged in 8-pin SOIC
•Pb (lead) free package
•Input frequency of 27 MHz
•Zero ppm synthesis error in output clock
•3.3 V or 5 V ±10% operating supply
•Ideal for HDTV applications and oscillator manufacturers
•25 mA output drive capability at TTL levels
•Advanced, low power, sub-micron CMOS process
•Operating voltage of 3.3 V or 5 V
Block Diagram
CLK
74.17582418 MHz or
74.2500 MHz
Clock
Synthesis
and Control
Circuitry
27 MHz
crystal or
clock input
VDD
Clock
Buffer
SEL
X1
X2
27.0000 MHz
GND
2
MK2716
HDTV CLOCK SYNTHESIZER CLOCK SYNTHESIZER
IDT™
HDTV CLOCK SYNTHESIZER 2
MK2716 REV G 051310
Pin Assignment FREQUENCY SELECT TABLE
Pin Descriptions
External Components
Decoupling Capacitor
As with any high performance mixed-signal IC, the MK2716
must be isolated from system power supply noise to perform
optimally.
A decoupling capacitor of 0.01µF must be connected
between VDD and GND on pins 2 and 3. It must be
connected close to the MK2716 to minimize lead
inductance. Pin 5 can be connected to pin 3. No external
power supply filtering is required for the MK2716.
Series Termination Resistor
A 33Ω terminating resistor can be used next to the clock
outputs for trace lengths over one inch.
Crystal Load Capacitors
The total on-chip capacitance is approximately 18 pF. A
parallel resonant, fundamental mode, AT cut 27 MHz crystal
should be used. The device crystal connections should
include pads for small capacitors from X1 to ground and
from X2 to ground. These capacitors are used to adjust the
stray capacitance of the board to match the nominally
required crystal load capacitance. Because load
capacitance can only be increased in this trimming process,
it is important to keep stray capacitance to a minimum by
using very short PCB traces (and no vias) between the
crystal and device. Crystal capacitors, if needed, must be
connected from each of the pins X1 and X2 to ground.
The value (in pF) of these crystal caps should equal (CL -16
pF)*2. In this equation, CL= crystal load capacitance in pF.
Example: For a crystal with an 18 pF load capacitance, each
crystal capacitor would be 4 pF [(18-16) x 2] = 4.
ICLK/X1
VDD
GND
27M
CLK
SEL
GND
X21
2
3
4
8
7
6
5
SEL CLK (MHz)
0 74.17582418
1 74.25
Pin
Number
Pin
Name
Pin
Type
Pin Description
1 ICLK/X1 XI Crystal connection. Connect to a 27 MHz fundamental crystal or clock.
2 VDD Power Connect to +3.3 V or +5 V.
3 GND Power Connect to ground.
4 27M Output 74.17582418 MHZ or 74.25 MHz clock output (see table above).
5 GND Power Connect to ground.
6 SEL Input Select pin determines value of CLK per table above.
7 27M Output 27 MHz buffered clock or crystal oscillator output.
8 X2 XO Crystal connection. Connect to a 27 MHz crystal, or leave unconnected
for clock input.
MK2716
HDTV CLOCK SYNTHESIZER CLOCK SYNTHESIZER
IDT™
HDTV CLOCK SYNTHESIZER 3
MK2716 REV G 051310
Absolute Maximum Ratings
Stresses above the ratings listed below can cause permanent damage to the MK2716. These ratings, which are
standard values for IDT commercially rated parts, 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.
Exposure to absolute maximum rating conditions for extended periods can affect product reliability. Electrical
parameters are guaranteed only over the recommended operating temperature range.
Recommended Operation Conditions
DC Electrical Characteristics
VDD=5 V unless otherwise noted, Ambient temperature 0 to +70°C
Item Rating
Supply Voltage, VDD 7 V
All Inputs and Outputs -0.5 V to VDD+0.5 V
Ambient Operating Temperature 0 to +70°C
Storage Temperature -65 to +150°C
Soldering Temperature 260°C
Parameter Min. Typ. Max. Units
Ambient Operating Temperature 0 +70 °C
Power Supply Voltage (measured in respect to GND) +3.0 +5.5 V
Parameter Symbol Conditions Min. Typ. Max. Units
Operating Voltage VDD 3.0 5 5.5 V
Input High Voltage VIH 2.0 V
Input Low Voltage VIL 0.8 V
Output High Voltage VOH IOH = -4 mA VDD-0.4 V
Output Low Voltage VOL IOL = 16 mA 0.4 V
Operating Supply Current IDD No load 30 mA
Short Circuit Current Each output +50 mA
Input Capacitance CIN S0, S1 pins 7 pF
MK2716
HDTV CLOCK SYNTHESIZER CLOCK SYNTHESIZER
IDT™
HDTV CLOCK SYNTHESIZER 4
MK2716 REV G 051310
AC Electrical Characteristics
VDD = 5 V unless otherwise noted, Ambient Temperature 0 to +70°C
Thermal Characteristics
Marking Diagram (Pb free)
Notes:
1. ###### is the lot number.
2. YYWW is the last two digits of the year and week that the part was assembled.
3. “LF” or “L” denotes Pb (lead) free package.
4. Bottom marking: (origin)
Origin = country of origin if not USA
Parameter Symbol Conditions Min. Typ. Max. Units
Input Frequency FIN 27 MHz
Frequency Error, Output Clock 0 ppm
Output Clock Rise Time tOR 0.8 to 2.0 V 1.5 ns
Output Clock Fall Time tOF 2.0 to 8.0 V 1.5 ns
Output Clock Duty Cycle at 1.4 V 40 50 60 %
Maximum Absolute Jitter, short term tja Deviation from mean 200 ps
Parameter Symbol Conditions Min. Typ. Max. Units
Thermal Resistance Junction to
Ambient
θJA Still air 150 °C/W
θJA 1 m/s air flow 140 °C/W
θJA 3 m/s air flow 120 °C/W
Thermal Resistance Junction to Case θJC 40 °C/W
MK2716SL
######
YYWW
14
58
MK2716
HDTV CLOCK SYNTHESIZER CLOCK SYNTHESIZER
IDT™
HDTV CLOCK SYNTHESIZER 5
MK2716 REV G 051310
Package Outline and Package Dimensions (8-pin SOIC, 150 Mil. Narrow Body)
Package dimensions are kept current with JEDEC Publication No. 95
Ordering Information
While the information presented herein has been checked for both accuracy and reliability, Integrated Device Technology (IDT) 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 IDT. IDT reserves the right to change any circuitry or specifications without notice. IDT
does not authorize or warrant any IDT product for use in life support devices or critical medical instruments.
Part / Order Number Marking Shipping Packaging Package Temperature
MK2716SLF MK2716SL Tubes 8-pin SOIC 0 to +70° C
MK2716SLFTR MK2716SL Tape and Reel 8-pin SOIC 0 to +70° C
INDEX
AREA
1 2
8
D
E
SEATING
PLANE
A1
A
e
- C -
B
.10 (.004) C
C
L
H
h x 45
Millimeters Inches
Symbol Min Max Min Max
A 1.35 1.75 .0532 .0688
A1 0.10 0.25 .0040 .0098
B 0.330.51.013.020
C 0.19 0.25 .0075 .0098
D 4.80 5.00 .1890 .1968
E 3.80 4.00 .1497 .1574
e 1.27 BASIC 0.050 BASIC
H 5.80 6.20 .2284 .2440
h 0.250.50.010.020
L 0.401.27.016.050
α0°8°0°8°
© 2006 Integrated Device Technology, Inc. All rights reserved. Product specifications subject to change without notice. IDT and the IDT logo are trademarks of Integrated Device
Technology, Inc. Accelerated Thinking is a service mark of Integrated Device Technology, Inc. All other brands, product names and marks are or may be trademarks or registered
trademarks used to identify products or services of their respective owners.
Printed in USA
Corporate Headquarters
Integrated Device Technology, Inc.
www.idt.com
For Sales
800-345-7015
408-284-8200
Fax: 408-284-2775
For Tech Support
www.idt.com/go/clockhelp
Innovate with IDT and accelerate your future networks. Contact:
www.IDT.com
MK2716
HDTV CLOCK SYNTHESIZER CLOCK SYNTHESIZER
