MAX9247_12 Datasheet, PDF (1/17 Pages) Maxim Integrated Products – 27-Bit, 2.5MHz-to-42MHz DC-Balanced LVDS Serializer

19-3955; Rev 4; 4/12
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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, reduc-
ing the serial-data rate. The data-enable input determines
when the video or control data is serialized.
The MAX9247 pairs with the MAX9248/MAX9250 dese-
rializers to form a complete digital video serial link.
Interconnect can be controlled-impedance PCB 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 100Ω. For operating frequen-
cies 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 a 48-lead
LQFP package and is specified from -40°C to +85°C or
-40°C to +105°C.
Applications
Navigation System Displays
In-Vehicle Entertainment Systems
Video Cameras
LCDs
Features
o Preemphasis Improves Eye Diagram and Signal
Integrity at the Output
o Proprietary Data Encoding for DC Balance and
Reduced EMI
o Control Data Sent During Video Blanking
o Five Control Data Inputs are Single-Bit-Error
Tolerant
o Programmable Phase-Shifted LVDS Signaling
Reduces EMI
o Output Common-Mode Filter Reduces EMI
o Greater Than 10m STP Cable Drive
o Wide ±2% Reference Clock Tolerance
o ISO 10605 and IEC 61000-4-2 Level 4
ESD Protection
o Separate Input Supply Allows Interface to 1.8V
to 3.3V Logic
o +3.3V Core Supply
o Space-Saving LQFP Package
o -40°C to +85°C and -40°C to +105°C Operating
Temperature Ranges
Ordering Information
PART
TEMP RANGE
PIN-PACKAGE
MAX9247ECM+
-40°C to +85°C 48 LQFP
MAX9247ECM/V+ -40°C to +85°C 48 LQFP
MAX9247GCM+
-40°C to +105°C 48 LQFP
MAX9247GCM/V+ -40°C to +105°C 48 LQFP
+Denotes a lead(Pb)-free/RoHS-compliant package.
/V denotes an automotive qualified part.
Pin Configuration
TOP VIEW
GND
+
1
VCCIN 2
RGB_IN10 3
RGB_IN11 4
RGB_IN12 5
RGB_IN13 6
RGB_IN14 7
RGB_IN15 8
RGB_IN16 9
RGB_IN17 10
CNTL_IN0 11
CNTL_IN1 12
MAX9247
36 RNG0
35 RNG1
34 VCCLVDS
33 OUT+
32 OUT-
31 LVDSGND
30 LVDSGND
29 CMF
28 PWRDWN
27 VCCPLL
26 PLLGND
25 PRE
LQFP
________________________________________________________________ Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.