MAX9234_12 Datasheet, PDF (1/15 Pages) Maxim Integrated Products – Hot-Swappable, 21-Bit, DC-Balanced LVDS Deserializers

MAX9234/MAX9236/
MAX9238
Hot-Swappable, 21-Bit, DC-Balanced LVDS
Deserializers
General Description
The MAX9234/MAX9236/MAX9238 deserialize three
LVDS serial-data inputs into 21 single-ended
LVCMOS/LVTTL outputs. A parallel-rate LVDS clock
received with the LVDS data streams provides timing for
deserialization. The outputs have a separate supply,
allowing 1.8V to 5V output logic levels. All these devices
are hot-swappable and allow “on-the-fly” frequency
programming.
The MAX9234/MAX9236/MAX9238 feature DC balance,
which allows isolation between a serializer and deseri-
alizer using AC-coupling. Each deserializer decodes
data transmitted by one of the MAX9209/MAX9211/
MAX9213/MAX9215 serializers.
The MAX9234 has a rising-edge output strobe. The
MAX9236/MAX9238 have a falling-edge output strobe.
The MAX9234/MAX9236/MAX9238 operate in DC-
balanced mode only.
The MAX9234/MAX9236 operate with a parallel input
clock of 8MHz to 34MHz, while the MAX9238 operates
from 16MHz to 66MHz. The transition time of the single-
ended outputs is increased on the low-frequency version
parts (MAX9234/MAX9236) for reduced EMI. The LVDS
inputs meet ISO 10605 ESD specification, ±25kV for Air-
Gap Discharge and ±8kV Contact Discharge.
The MAX9234/MAX9236/MAX9238 are available in 48-pin
TSSOP packages and operate over the -40°C to +85°C
temperature range.
Applications
Automotive Navigation Systems
Automotive DVD Entertainment Systems
Digital Copiers
Laser Printers
Features
o DC Balance Allows AC-Coupling for Wider Input
Common-Mode Voltage Range
o On-the-Fly Frequency Programming
o Operating Frequency Range
8MHz to 34MHz (MAX9234/MAX9236)
16MHz to 66MHz (MAX9238)
o Falling-Edge Output Strobe (MAX9236/MAX9238)
o Slower Output Transitions for Reduced EMI
(MAX9234/MAX9236)
o High-Impedance Outputs when PWRDWN Is Low
Allow Output Busing
o 5V-Tolerant PWRDWN Input
o PLL Requires No External Components
o Up to 1.386Gbps Throughput
o Separate Output Supply Pins Allow Interface to
1.8V, 2.5V, 3.3V, and 5V Logic
o LVDS Inputs Meet ISO 10605 ESD Requirements
o LVDS Inputs Conform to ANSI TIA/EIA-644 LVDS
Standard
o Low-Profile, 48-Lead TSSOP Package
o +3.3V Main Power Supply
o -40°C to +85°C Operating Temperature Range
Ordering Information
PART
TEMP RANGE
PIN-
PACKAGE
MAX9234EUM+
-40°C to +85°C
48 TSSOP
MAX9234EUM/V+
-40°C to +85°C
48 TSSOP
MAX9236EUM+
-40°C to +85°C
48 TSSOP
MAX9238EUM+
-40°C to +85°C
48 TSSOP
+Denotes a lead(Pb)-free/RoHS-compliant package.
/V Denotes an automotive qualified part.
Note: Devices are also available in a tape-and-reel packaging.
Specify tape and reel by adding “T” to the part number when
ordering.
Functional Diagram and Pin Configuration appear at end of
data sheet.
For pricing, delivery, and ordering information, please contact Maxim Direct
at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com.
19-3641; Rev 2; 9/12