MAX9247| Datasheet

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19-3955; Rev 1; 9/06

27-Bit, 2.5MHz-to-42MHz DC-Balanced LVDS Serializer
General Description
The MAX9247 digital video parallel-to-serial converter serializes 27 bits of parallel data into a serial-data stream. Eighteen bits of video data and 9 bits of control data are encoded and multiplexed onto the serial interface, reducing the serial-data rate. The data-enable input determines when the video or control data is serialized. The MAX9247 pairs with the MAX9248/MAX9250 deserializers to form a complete digital video serial link. Interconnect can be controlled-impedance PC board traces or twisted-pair cable. Proprietary data encoding reduces EMI and provides DC balance. DC balance allows AC-coupling, providing isolation between the transmitting and receiving ends of the interface. The LVDS output is internally terminated with 100. For operating frequencies less than 35MHz, the MAX9247 can also pair with the MAX9218 deserializer. ESD tolerance is specified for ISO 10605 with 10kV Contact Discharge and 30kV Air-Gap Discharge. The MAX9247 operates from a +3.3V core supply and features a separate input
supply for interfacing to 1.8V to 3.3V logic levels. This device is available in 48-lead TQFP and TQFN packages and is specified from -40 C to +85 C.

Features
Preemphasis Improves Eye Diagram and Signal Integrity at the Output Proprietary Data Encoding for DC Balance and Reduced EMI Control Data Sent During Video Blanking Five Control Data Inputs are Single-Bit-Error Tolerant Programmable Phase-Shifted LVDS Signaling Reduces EMI Output Common-Mode Filter Reduces EMI Greater Than 10m STP Cable Drive Wide 2% Reference Clock Tolerance ISO 10605 and IEC 61000-4-2 Level 4 ESD Protection Separate Input Supply Allows Interface to 1.8V to 3.3V Logic +3.3V Core Supply Space-Saving TQFP and TQFN Packages -40 C to +85 C Operating Temperature Range

MAX9247

Ordering Information
PART MAX9247ECM+ MAX9247ETM+* TEMP RANGE PINPACKAGE PKG CODE C48-5 T4866-1

Applications
Navigation System Displays In-Vehicle Entertainment Systems Video Cameras LCDs

-40 C to +85 C 48 TQFP -40 C to +85 C 48 TQFN-EP**

*Future part--contact factory for availability. **EP = Exposed pad. +Denotes lead-free package.

Pin Configurations
RGB_IN9 RGB_IN8 RGB_IN7 RGB_IN6 RGB_IN5 RGB_IN4 RGB_IN3 RGB_IN2 RGB_IN1 RGB_IN0 VCC RNG0 RNG1 VCCLVDS OUT+ OUTLVDSGND LVDSGND CMF PWRDWN VCCPLL TOP VIEW PLLGND PRE GND
37

48

47

46

45

44

43

42

41

40

39

38

36 35 34 33 32 31 30 29 28 27 26 25 36 35 34 33 32 31

GND VCCIN RGB_IN10 RGB_IN11 RGB_IN12 RGB_IN13 RGB_IN14 RGB_IN15 RGB_IN16 RGB_IN17 CNTL_IN0 CNTL_IN1

1 2 3 4 5 6 7 8 9 10 11 12

+

RNG0 RNG1 VCCLVDS OUT+ OUTLVDSGND LVDSGND CMF PWRDWN VCCPLL PLLGND PRE

GND VCC RGB_IN0 RGB_IN1 RGB_IN2 RGB_IN3 RGB_IN4 RGB_IN5 RGB_IN6 RGB_IN7 RGB_IN8 RGB_IN9

37 38 39 40 41 42 43 44 45 46 47 48

24 23 22 21 20 19

I.C. PCLK_IN DE_IN CNTL_IN8 CNTL_IN7 CNTL_IN6 CNTL_IN5 CNTL_IN4 CNTL_IN3 CNTL_IN2 VCC GND

MAX9247

30 29 28 27 26 25

MAX9247

18 17 16 15 14 13

+
1 2 3 4 5 6 7 8 9 10 11 12

13

14

15

16

17

18

19

20

21

22

23

24

GND VCCIN RGB_IN10 RGB_IN11 RGB_IN12

RGB_IN13 RGB_IN14 RGB_IN15 RGB_IN16

GND VCC CNTL_IN2 CNTL_IN3 CNTL_IN4 CNTL_IN5

CNTL_IN6 CNTL_IN7 CNTL_IN8 DE_IN

TQFP

TQFN-EP

________________________________________________________________ Maxim Integrated Products

RGB_IN17 CNTL_IN0 CNTL_IN1

PCLK_IN I.C.

1

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim's website at www.maxim-ic.com.

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MAX9247 DATASHEET