MK2745-21STR

MK2745-21STR Datasheet

MK2745-21

Part	Datasheet
MK2745-21STR	MK2745-21STR (pdf)

Related Parts	Information
MK2745-21S	MK2745-21S

PDF Datasheet Preview
DVD/MPEG CLOCK SOURCE DATASHEET MK2745-21 The MK2745-21 is a low-cost, low-jitter, high-performance clock synthesizer for DVD and other MPEG 2-based applications. Using analog Phase-Locked Loop PLL techniques, the device accepts a 27 MHz fundamental mode crystal or clock input to produce multiple audio output clocks, a processor clock, the processor clock divided by two, 27 MHz, MHz, and a selectable audio clock. The audio clocks are frequency-locked to the 27 MHz using our patented zero ppm error techniques. This allows audio and video to track exactly, thereby eliminating the need for large buffer memory. IDT manufactures a large variety of DVD, Set-top Box, and multimedia clock synthesizers for all applications. Consult IDT to eliminate crystals and oscillators from your board. • Packaged in a 16-pin narrow 150 mil SOIC • Ideal for LuxSonor’s DVD solutions • V upgrade to the MK2744 • Patented zero ppm audio clock error for 256x and 384x sampling rates • Selectable audio sampling frequencies support 32, and 48 kHz in most DACs • 27 MHz fundamental crystal or clock input • Eight selectable processor frequencies • Fixed clocks of 27 and MHz • Zero ppm in all clocks • 25 mA output drive capability at TTL levels • Advanced, low-power, sub-micron CMOS process • Operating voltage of V to V • See also the MK2712 for NTSC/PAL clocks NOTE EOL for non-green parts to occur on 5/13/10 per PDN U-09-01 Block Diagram VDD 2 AS2:0 PS1:0 27 MHz crystal or clock X1 Clock Synthesis and Control Circuitry Clock Buffer/ Crystal Ocsillator 2 GND Audio Clock MHz Processor Clock PCLK/2 27 MHz IDT DVD/MPEG CLOCK SOURCE MK2745-21 DVD/MPEG CLOCK SOURCE VCXO AND SYNTHESIZER Pin Assignment PS1 1 X2 2 X1/ICLK 3 VDD 4 GND 5 ACLK 6 PCLK 7 AS2 8 16 PS0 15 24.576M 14 PCLK/2 13 VDD 12 AS1 11 GND 10 27M 9 AS0 16-pin 150 mil SOIC Pin Descriptions Audio Clock MHz DecodingTable 0 1 0 1 0 1 0 1 0 1 0 1 ACLK Processor Clock MHz 0 1 0 1 PCLK Ordering Information Part / Order Number MK2745-21S* MK2745-21STR* MK2745-21SLF MK2745-21SLFTR Marking 2745-21S 2745-21S 2745-21SLF 2745-21SLF Shipping Packaging Tubes Tape and Reel Tubes Tape and Reel *NOTE EOL for non-green parts to occur on 5/13/10 per PDN U-09-01 Package 16-pin SOIC 16-pin SOIC 16-pin SOIC 16-pin SOIC Temperature 0 to 70° C 0 to 70° C 0 to 70° C 0 to 70° C “LF” denotes Pb lead free package 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. IDT DVD/MPEG CLOCK SOURCE MK2745-21 DVD/MPEG CLOCK SOURCE VCXO AND SYNTHESIZER Innovate with IDT and accelerate your future networks. Contact: For Sales 800-345-7015 408-284-8200 Fax 408-284-2775 For Tech Support Corporate Headquarters Integrated Device Technology, Inc. 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

PDF Datasheet Preview

DVD/MPEG CLOCK SOURCE

DATASHEET

MK2745-21

The MK2745-21 is a low-cost, low-jitter, high-performance clock synthesizer for DVD and other MPEG 2-based applications. Using analog Phase-Locked Loop PLL techniques, the device accepts a 27 MHz fundamental mode crystal or clock input to produce multiple audio output clocks, a processor clock, the processor clock divided by two, 27 MHz, MHz, and a selectable audio clock. The audio clocks are frequency-locked to the 27 MHz using our patented zero ppm error techniques. This allows audio and video to track exactly, thereby eliminating the need for large buffer memory.

IDT manufactures a large variety of DVD, Set-top Box, and multimedia clock synthesizers for all applications. Consult IDT to eliminate crystals and oscillators from your board.
• Packaged in a 16-pin narrow 150 mil SOIC
• Ideal for LuxSonor’s DVD solutions
• V upgrade to the MK2744
• Patented zero ppm audio clock error for 256x and 384x
sampling rates
• Selectable audio sampling frequencies support 32,
and 48 kHz in most DACs
• 27 MHz fundamental crystal or clock input
• Eight selectable processor frequencies
• Fixed clocks of 27 and MHz
• Zero ppm in all clocks
• 25 mA output drive capability at TTL levels
• Advanced, low-power, sub-micron CMOS process
• Operating voltage of V to V
• See also the MK2712 for NTSC/PAL clocks

NOTE EOL for non-green parts to occur on 5/13/10 per PDN U-09-01

Block Diagram

VDD 2

AS2:0

PS1:0 27 MHz crystal
or clock X1

Clock

Synthesis and

Control

Circuitry

Clock Buffer/ Crystal

Ocsillator
2 GND

Audio Clock MHz Processor Clock PCLK/2
27 MHz

IDT DVD/MPEG CLOCK SOURCE

MK2745-21 DVD/MPEG CLOCK SOURCE

VCXO AND SYNTHESIZER

Pin Assignment

PS1 1 X2 2

X1/ICLK 3 VDD 4 GND 5 ACLK 6 PCLK 7 AS2 8
16 PS0 15 24.576M 14 PCLK/2 13 VDD 12 AS1 11 GND 10 27M 9 AS0
16-pin 150 mil SOIC

Pin Descriptions

Audio Clock MHz DecodingTable
0 1 0 1
0 1 0 1 0 1 0 1

ACLK

Processor Clock MHz
0 1 0 1

PCLK
Ordering Information

Part / Order Number

MK2745-21S* MK2745-21STR* MK2745-21SLF MK2745-21SLFTR

Marking
2745-21S 2745-21S 2745-21SLF 2745-21SLF

Shipping Packaging

Tubes Tape and Reel

Tubes Tape and Reel
*NOTE EOL for non-green parts to occur on 5/13/10 per PDN U-09-01

Package
16-pin SOIC 16-pin SOIC 16-pin SOIC 16-pin SOIC

Temperature
0 to 70° C 0 to 70° C 0 to 70° C 0 to 70° C
“LF” denotes Pb lead free package

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.

IDT DVD/MPEG CLOCK SOURCE

MK2745-21 DVD/MPEG CLOCK SOURCE

VCXO AND SYNTHESIZER

Innovate with IDT and accelerate your future networks. Contact:

For Sales
800-345-7015 408-284-8200 Fax 408-284-2775

For Tech Support

Corporate Headquarters

Integrated Device Technology, Inc.
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

Notice: we do not provide any warranties that information, datasheets, application notes, circuit diagrams, or software stored on this website are up-to-date or error free. The archived MK2745-21STR Datasheet file may be downloaded here without warranties.

Datasheet ID: MK2745-21STR 637466