19-3943; Rev 3; 4/09
KIT
ATION
EVALU
E
AILABL
AV
27-Bit, 2.5MHz to 42MHz
DC-Balanced LVDS Deserializers
The MAX9248/MAX9250 digital video serial-to-parallel
converters deserialize a total of 27 bits during data and
control phases. In the data phase, the LVDS serial input is
converted to 18 bits of parallel video data and in the control phase, the input is converted to 9 bits of parallel control data. The separate video and control phases take
advantage of video timing to reduce the serial-data rate.
The MAX9248/MAX9250 pair with the MAX9247 serializer
to form a complete digital video transmission system. For
operating frequencies less than 35MHz, the MAX9248/
MAX9250 can also pair with the MAX9217 serializer.
The MAX9248 features spread-spectrum capability,
allowing output data and clock to spread over a specified frequency range to reduce EMI. The data and
clock outputs are programmable for a spectrum spread
of ±4% or ±2%. The MAX9250 features output enable
input control to allow data busing.
Proprietary data decoding reduces EMI and provides
DC balance. The DC balance allows AC-coupling, providing isolation between the transmitting and receiving
ends of the interface. The MAX9248/MAX9250 feature a
selectable rising or falling output latch edge.
ESD tolerance is specified for ISO 10605 with ±10kV
Contact Discharge and ±30kV Air-Gap Discharge.
The MAX9248/MAX9250 operate from a +3.3V ±10%
core supply and feature a separate output supply for
interfacing to 1.8V to 3.3V logic-level inputs. These
devices are available in a 48-lead LQFP package and
are specified from -40°C to +85°C or -40°C to +105°C.
Features
♦ Programmable ±4% or ±2% Spread-Spectrum
Output for Reduced EMI (MAX9248)
♦ Proprietary Data Decoding for DC Balance and
Reduced EMI
♦ Control Data Deserialized During Video Blanking
♦ Five Control Data Inputs are Single-Bit-Error
Tolerant
♦ Output Transition Time is Scaled to Operating
Frequency for Reduced EMI
♦ Staggered Output Switching Reduces EMI
♦ Output Enable Allows Busing of Outputs
(MAX9250)
♦ Clock Pulse Stretch on Lock
♦ Wide ±2% Reference Clock Tolerance
♦ Synchronizes to MAX9247 Serializer Without
External Control
♦ ISO 10605 and IEC 61000-4-2 Level 4
ESD Protection
♦ Separate Output Supply Allows Interface to 1.8V
to 3.3V Logic
♦ +3.3V Core Power Supply
♦ Space-Saving LQFP Package
♦ -40°C to +85°C and -40°C to +105°C Operating
Temperature Ranges
Applications
Navigation System Displays
Ordering Information
TEMP RANGE
PIN-PACKAGE
In-Vehicle Entertainment Systems
MAX9248ECM+
PART
-40°C to +85°C
48 LQFP
Video Cameras
MAX9248ECM/V+
-40°C to +85°C
48 LQFP
LCD Displays
MAX9248GCM+
-40°C to +105°C
48 LQFP
MAX9248GCM/V+
-40°C to +105°C
48 LQFP
-40°C to +85°C
48 LQFP
MAX9250ECM+
MAX9250ECM/V+
-40°C to +85°C
48 LQFP
MAX9250GCM+
-40°C to +105°C
48 LQFP
MAX9250GCM/V+
-40°C to +105°C
48 LQFP
+Denotes a lead(Pb)-free/RoHS-compliant package.
/V denotes an automotive qualified part.
Pin Configuration appears at end of data sheet.
________________________________________________________________ Maxim Integrated Products
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.
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MAX9248/MAX9250
General Description
