MAX9247 Datasheet, PDF (1/17 Pages) Maxim Integrated Products – 27-Bit, 2.5MHz-to-42MHz DC-Balanced LVDS Serializer

19-3955; Rev 0; 1/06
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, 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 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 100Ω. 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.
Applications
Navigation System Displays
In-Vehicle Entertainment Systems
Video Cameras
LCDs
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
Ordering Information
PART
TEMP RANGE
PIN-
PACKAGE
PKG
CODE
MAX9247ECM+ -40°C to +85°C 48 TQFP
C48-5
MAX9247ETM+* -40°C to +85°C 48 TQFN-EP** T4866-1
*Future part—contact factory for availability.
**EP = Exposed pad.
+Denotes lead-free package.
Pin Configurations
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
36 35 34 33 32 31 30 29 28 27 26 25
GND 37
VCC 38
RGB_IN0 39
RGB_IN1 40
RGB_IN2 41
RGB_IN3 42
RGB_IN4 43
RGB_IN5 44
RGB_IN6 45
RGB_IN7 46
RGB_IN8 47
RGB_IN9 48
MAX9247
24 I.C.
23 PCLK_IN
22 DE_IN
21 CNTL_IN8
20 CNTL_IN7
19 CNTL_IN6
18 CNTL_IN5
17 CNTL_IN4
16 CNTL_IN3
15 CNTL_IN2
14 VCC
13 GND
1 2 3 4 5 6 7 8 9 10 11 12
TQFP
TQFN-EP
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