19-3861; Rev 1; 12/07
KIT
ATION
EVALU
BLE
AVAILA
22-Bit, Low-Power, 5MHz to 10MHz
Serializer and Deserializer Chipsets
MAX9223/MAX9224
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
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.
Ordering Information
PART
MAX9223ETI
MAX9223ETI+
MAX9224ETI
MAX9224ETI+
TEMP RANGE
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
PIN-
PACKAGE
28 TQFN-EP*
28 TQFN-EP*
28 TQFN-EP*
28 TQFN-EP*
PKG
CODE
T2844-1
T2844-1
T2844-1
T2844-1
Applications
Cell Phones
LCDs
Digital Cameras
+Denotes
lead-free package.
*EP
= Exposed paddle.
Pin Configurations appear at end of data sheet.
Typical Application Circuit
LCDS
PARALLEL
DATA IN
LATCH
INPUT
PARALLEL
TO
SERIAL
SERIAL
TO
PARALLEL
OUTPUT
LATCH
PARALLEL
DATA OUT
PIXEL
CLOCK IN
TIMING
AND
CONTROL
POWER-DOWN
CONTROL
TIMING AND CONTROL
DLL
PIXEL
CLOCK OUT
MAX9223
MAX9224
________________________________________________________________
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.
22-Bit, Low-Power, 5MHz to 10MHz
Serializer and Deserializer Chipset
MAX9223/MAX9224
ABSOLUTE MAXIMUM RATINGS
V
DD
to GND ...........................................................-0.5V to +4.0V
V
DDO
to GND.........................................................-0.5V to +4.0V
Serial Interface (SDO+, SDO-, SDI+,
SDI-) to GND .....................................................-0.5V to +4.0V
Single-Ended Inputs (DIN_, PCLKIN,
PWRDN)
to GND ....................................-0.5V to (V
DD
+ 0.5V)
Single-Ended Outputs (DOUT_,
PCLKOUT) to GND ..............................-0.5V to (V
DDO
+ 0.5V)
Continuous Power Dissipation (T
A
= +70°C)
28-Pin TQFN (4mm x 4mm x 0.8mm)
Multilayer PCB (derate 28.6mW/°C
above +70°C).............................................................2286mW
Single-Layer PCB (derate 20.8mW/°C
above +70°C).............................................................1667mW
Storage Temperature Range .............................-65°C to +150°C
Junction Temperature ......................................................+150°C
Lead Temperature (soldering, 10s) .................................+300°C
ESD Protection (Human Body Model)
SDO+, SDO-, SDI+, SDI- to GND ...............................> ±15kV
All Other Pins ................................................................> ±2kV
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
DC ELECTRICAL CHARACTERISTICS—MAX9223
(V
DD
= +2.375V to +3.465V, T
A
= -40°C to +85°C, unless otherwise noted. Typical values are at V
DD
= +2.5V, T
A
= +25°C.) (Notes 1, 2)
PARAMETER
High-Level Input Voltage
Low-Level Input Voltage
Input Current
LCDS OUTPUT (SDO+, SDO-)
Differential Output Current (Note 3)
Output Short-Circuit Current
POWER SUPPLY
V
DD
= 2.5V,
DIN_ = all low or
all high
PCLKIN = 5MHz
(110Mbps)
PCLKIN = 10MHz
(220Mbps)
PCLKIN = 5MHz
(110Mbps)
PCLKIN = 10MHz
(220Mbps)
4.4
5.6
4.1
5.4
8.2
mA
8.2
10.6
mA
10.6
0.5
µA
I
ODH
I
ODL
I
OS
High level
Low level
Shorted to 0V or V
DD
600
200
643
229
880
300
880
µA
µA
SYMBOL
V
IH
V
IL
V
IN
= 0V to V
DD
I
IN
-0.3V
≤
V
IN
<
0V
V
DD
<
V
IN
≤
(V
DD
+ 0.3V)
CONDITIONS
MIN
1.19
-0.3
-20
-100
TYP
MAX
V
DD
+ 0.3
+0.3
+20
+100
µA
UNITS
V
V
SINGLE-ENDED INPUTS (PCLKIN, DIN_,
PWRDN)
Supply Current
I
DD
Worst-Case Pattern Supply Current
I
DDW
V
DD
= 2.5V,
Figure 1
All inputs = low
Power-Down Supply Current
I
DDZ
2
_______________________________________________________________________________________
22-Bit, Low-Power, 5MHz to 10MHz
Serializer and Deserializer Chipset
DC ELECTRICAL CHARACTERISTICS—MAX9224
(V
DD
= +2.375V to +3.465V, V
DDO
= +1.71V to +3.465V, T
A
= -40°C to +85°C, unless otherwise noted. Typical values are at V
DD
=
V
DDO
= +2.5V, T
A
= +25°C.) (Notes 1, 2)
PARAMETER
High-Level Output Voltage
Low-Level Output Voltage
Output Short-Circuit Current
LCDS INPUT (SDI+, SDI-)
Differential Input-Current Threshold
Common-Mode Input Current
I
ID
I
IC
I
IC
= 0µA at V
DD
= 3.3V ±5%
I
IC
= 0µA at V
DD
= 2.8V ±5%
Differential Input Impedance
Z
ID
I
IC
= 0µA at V
DD
= 2.5V ±5%
I
IC
= ±300µA at V
DD
= 3.3V ±5%
I
IC
= ±300µA at V
DD
= 2.8V ±5%
Common-Mode Input Impedance
Input Capacitance
POWER SUPPLY
V
DD
= V
DDO
= 2.5V
DOUT_ = all high or
all low
PCLKOUT = 5MHz
(110Mbps)
PCLKOUT = 10MHz
(220Mbps)
PCLKOUT = 5MHz
(110Mbps)
PCLKOUT = 10MHz
(220Mbps)
9
9
10
10
0.08
MAX9223 V
DD
to MAX9224 V
DD
MAX9223 to MAX9224 ground difference
-5
-0.2
12
mA
12
12
mA
12
3
+5
+0.2
µA
%
V
Z
IC
C
IN
I
IC
= ±300µA
SDI+ or SDI- to ground
-300
69
82
95
67
86
90
400
±500
90
108
125
91
108
167
2
+300
109
132
153
112
136
375
Ω
pF
Ω
µA
µA
SYMBOL
V
OH
V
OL
I
OS
CONDITIONS
V
DDO
= +2.375V to +3.465V, I
OH
= -1mA
V
DDO
= +2.375V to +3.465V, I
OL
= 1mA
Output shorted
to ground
V
DDO
= 2.375V
V
DDO
= 3.135V
V
DDO
= 3.465V
-2
-9
-25
mA
MIN
0.8 x V
DDO
0.2
TYP
MAX
UNITS
V
V
SINGLE-ENDED OUTPUTS (PCLKOUT, DOUT_)
MAX9223/MAX9224
Supply Current (Note 4)
I
TOT
Worst-Case Pattern
Supply Current (Note 4)
Power-Down Supply Current
(Note 4)
Supply Difference
GROUND POTENTIAL
Ground Difference
I
TOTW
C
L
= 5pF, V
DD
=
V
DDO
= 2.5V,
Figure 2
I
TOTZ
V
SD
V
GD
_______________________________________________________________________________________
3
22-Bit, Low-Power, 5MHz to 10MHz
Serializer and Deserializer Chipset
MAX9223/MAX9224
AC ELECTRICAL CHARACTERISTICS—MAX9223
(V
DD
= +2.375V to +3.465V, T
A
= -40°C to +85°C, unless otherwise noted. Typical values are at V
DD
= +2.5V, T
A
= +25°C.) (Note 3)
PARAMETER
Input Rise Time
Input Fall Time
PCLKIN Period
High-Level Pulse Width
Low-Level Pulse Width
Setup Time
Hold Time
SYMBOL
t
R
t
F
t
P
t
PWH
t
PWL
t
S
t
H
100
0.3 x t
P
0.3 x t
P
3
1
CONDITIONS
MIN
TYP
MAX
2
2
200
0.7 x t
P
0.7 x t
P
UNITS
ns
ns
ns
ns
ns
ns
ns
PCLKIN INPUT REQUIREMENTS (Figure 3)
AC ELECTRICAL CHARACTERISTICS—MAX9224
(V
DD
= V
DDO
= +2.375V to +3.465V, C
L
= 5pF, T
A
= -40°C to +85°C, unless otherwise noted. Typical values are at V
DD
= V
DDO
=
+2.5V, T
A
= +25°C.) (Notes 3, 5)
PARAMETER
PCLKOUT Period
High-Level Pulse Width
Low-Level Pulse Width
Data Valid Before PCLKOUT
Data Valid After PCLKOUT
SERIALIZER AND DESERIALIZER LINK
t
PU1
Power-Up Time
t
PU2
Power-Down Time
t
PWRDN
From V
DD
= V
DDO
= 2.375V when supplies
are ramping up
From
PWRDN
low to high
From
PWRDN
high to low
2.8
6144 x
t
P
4096 x
t
P
10
SYMBOL
t
P
t
PWH
t
PWL
t
VB
t
VA
Figure 4
Figure 4
Figure 4
Figure 4
Figure 4
CONDITIONS
MIN
100
0.4 x t
P
0.4 x t
P
5
5
TYP
MAX
200
0.6 x t
P
0.6 x t
P
UNITS
ns
ns
ns
ns
ns
ns
µs
Note 1:
Current into a pin is defined as positive. Current out of a pin is defined as negative. All voltages are referenced to ground.
Note 2:
Maximum and minimum limits over temperature are guaranteed by design and characterization. Devices are production
tested at T
A
= +85°C.
Note 3:
Parameters are guaranteed by design and characterization, and are not production tested. Limits are set at ±6 sigma.
Note 4:
I
TOT
= I
DD
+ I
DDO
.
Note 5:
C
L
includes probe and test jig capacitance.
4
_______________________________________________________________________________________
22-Bit, Low-Power, 5MHz to 10MHz
Serializer and Deserializer Chipset
MAX9223/MAX9224
Test Circuits/Timing Diagrams
ODD DIN_
EVEN DIN_
PCLKIN
ODD DOUT_
EVEN DOUT_
PCLKOUT
Figure 1. Serializer Worst-Case Switching Pattern
Figure 2. Deserializer Worst-Case Switching Pattern
t
P
t
PWL
V
IH
PCLKIN
t
F
t
PWH
V
IH
V
IH
V
IL
V
IL
t
R
t
S
t
H
V
IH
V
IL
DIN_
PWRDN
V
IH
V
IL
V
IH
IS THE MINIMUM HIGH-LEVEL INPUT AND V
IL
IS THE MAXIMUM LOW-LEVEL INPUT (SEE THE
DC ELECTRICAL CHARACTERISTICS
TABLE).
Figure 3. Serializer Input Timing
t
P
t
PWL
V
OH
PCLKOUT
V
OL
V
OL
V
OH
t
PWH
V
OH
t
VB
DOUT_
V
OH
V
OL
t
VA
V
OH
V
OL
V
OH
IS THE MINIMUM HIGH-LEVEL OUTPUT AND V
OL
IS THE MAXIMUM LOW-LEVEL OUTPUT (SEE THE
DC ELECTRICAL CHARACTERISTICS
TABLE).
Figure 4. Deserializer Output Timing
_______________________________________________________________________________________
5
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