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.
General Description
The MAX9223/MAX9224 serializer/deserializer chipsets
reduce wiring by serializing 22 bits onto a single differen-
tial pair. 22 bits are serialized in each cycle of the paral-
lel input clock resulting in a 110Mbps to 220Mbps net
serial-data rate ideal for cell phone QVGA and QCIF dis-
plays. The MAX9223 serializes the 18-bit RGB, VSYNC,
HSYNC, and two control signals from the baseband
processor to reduce wiring through the hinge to the LCD
controller. The 2-wire serial interface uses low-current dif-
ferential signaling (LCDS) for low EMI, high common-
mode noise immunity, and ground-shift tolerance. The
MAX9223/MAX9224 automatically identify the word
boundary in serial data in case of signal interruption. The
MAX9224 power-down is controlled by the MAX9223.
The MAX9223 and MAX9224 consume 3.5µA or less in
power-down mode.
The MAX9223 serializer operates from a single +2.375V
to +3.465V supply and accepts +1.71V to +3.465V
inputs. The MAX9224 deserializer operates from a
+2.375V to +3.465V core supply and has a separate
output buffer supply (V
DDO
), allowing +1.71V to
+3.465V output high levels.
The MAX9223/MAX9224 are specified over the -40°C to
+85°C extended temperature range and are available
in 28-pin TQFN (4mm x 4mm x 0.8mm) packages with
an exposed paddle.
Applications
Cell Phones
LCDs
Digital Cameras
Features
♦ Ideal for Serializing Cell Phone LCD or Imager
Parallel Interface
♦ MAX9223 Serializes 18-Bit RGB, VSYNC, HSYNC,
and Two Control Signals
♦ LCDS Rejects Common-Mode Noise
♦ Automatic Location of Word Boundary After Signal
Interruption
♦ Power-Down Control Through the Serial Link
♦ Power-Down Supply Current
0.5µA (max)—MAX9223
3.0µA (max)—MAX9224
♦ +2.375V to +3.465V Core Supply Voltage
♦ Parallel I/O Interfaces Directly to 1.8V to 3.3V Logic
♦ ±15kV Human Body Model ESD Protection
♦ -40°C to +85°C Operating Temperature Range
MAX9223/MAX9224
22-Bit, Low-Power, 5MHz to 10MHz
Serializer and Deserializer Chipsets
________________________________________________________________ Maxim Integrated Products 1
Ordering Information
19-3861; Rev 1; 12/07