MAXIM MAX9223, MAX9224 User Manual

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 differen­tial pair. 22 bits are serialized in each cycle of the paral­lel input clock resulting in a 110Mbps to 220Mbps net
serial-data rate ideal for cell phone QVGA and QCIF dis­plays. 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 dif­ferential signaling (LCDS) for low EMI, high common­mode 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

PART

TEMP RANGE

PIN­PACKAGE

PKG
CODE

MAX9223ETI

T2844-1

MAX9223ETI+

T2844-1

MAX9224ETI

T2844-1

MAX9224ETI+

T2844-1

EVALUATION KIT

AVAILABLE

+Denotes lead-free package.
*EP = Exposed paddle.

Typical Application Circuit

TIMING

AND

CONTROL

PARALLEL

TO

SERIAL

PARALLEL
DATA OUT

TIMING AND CONTROL

OUTPUT

LATCH

PIXEL
CLOCK OUT

DLL

LCDS

POWER-DOWN
CONTROL

SERIAL

TO

PARALLEL

PARALLEL

DATA IN

PIXEL

CLOCK IN

LATCH

INPUT

MAX9223 MAX9224

Pin Configurations appear at end of data sheet.

-40°C to +85°C 28 TQFN-EP*

-40°C to +85°C 28 TQFN-EP*

-40°C to +85°C 28 TQFN-EP*

-40°C to +85°C 28 TQFN-EP*

MAX9223/MAX9224

22-Bit, Low-Power, 5MHz to 10MHz
Serializer and Deserializer Chipset

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

DC ELECTRICAL CHARACTERISTICS—MAX9223

(VDD= +2.375V to +3.465V, TA= -40°C to +85°C, unless otherwise noted. Typical values are at VDD= +2.5V, TA= +25°C.) (Notes 1, 2)

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.

VDDto 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 (VDD+ 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

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

SINGLE-ENDED INPUTS (PCLKIN, DIN_, PWRDN)

High-Level Input Voltage V

IH

V

Low-Level Input Voltage V

IL

-0.3

V

VIN = 0V to V

DD

-20 +20

-0.3V ≤ VIN < 0VInput Current I

IN

VDD < VIN ≤ (VDD + 0.3V)

µA

LCDS OUTPUT (SDO+, SDO-)

I

ODH

High level 600 643 880

Differential Output Current (Note 3)

I

ODL

Low level 200 229 300

µA

Output Short-Circuit Current I

OS

Shorted to 0V or V

DD

880 µA

POWER SUPPLY

PCLKIN = 5MHz
(110Mbps)

4.4 8.2

Supply Current I

DD

VDD = 2.5V,
DIN_ = all low or
all high

PCLKIN = 10MHz
(220Mbps)

5.6 8.2

mA

PCLKIN = 5MHz
(110Mbps)

4.1

Worst-Case Pattern Supply Current

I

DDW

VDD = 2.5V,
Figure 1

PCLKIN = 10MHz
(220Mbps)

5.4

mA

Power-Down Supply Current I

DDZ

All inputs = low 0.5 µA

1.19 V

-100 +100

DD

+ 0.3

+0.3

10.6

10.6

MAX9223/MAX9224

22-Bit, Low-Power, 5MHz to 10MHz

Serializer and Deserializer Chipset

_______________________________________________________________________________________ 3

DC ELECTRICAL CHARACTERISTICS—MAX9224

(VDD= +2.375V to +3.465V, V

DDO

= +1.71V to +3.465V, TA= -40°C to +85°C, unless otherwise noted. Typical values are at VDD=

V

DDO

= +2.5V, TA= +25°C.) (Notes 1, 2)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

SINGLE-ENDED OUTPUTS (PCLKOUT, DOUT_)

High-Level Output Voltage V

OH

V

DDO

= +2.375V to +3.465V, IOH = -1mA

V

Low-Level Output Voltage V

OL

V

DDO

= +2.375V to +3.465V, IOL = 1mA 0.2 V

V

DDO

= 2.375V -2

V

DDO

= 3.135V -9

Output Short-Circuit Current I

OS

Output shorted
to ground

V

DDO

= 3.465V -25

mA

LCDS INPUT (SDI+, SDI-)

Differential Input-Current Threshold

I

ID

400 µA

Common-Mode Input Current I

IC

µA

IIC = 0µA at VDD = 3.3V ±5% 69 90 109

IIC = 0µA at VDD = 2.8V ±5% 82 108 132

IIC = 0µA at VDD = 2.5V ±5% 95 125 153

IIC = ±300µA at VDD = 3.3V ±5% 67 91 112

Differential Input Impedance Z

ID

IIC = ±300µA at VDD = 2.8V ±5% 86 108 136

Ω

Common-Mode Input Impedance Z

IC

IIC = ±300µA 90 167 375 Ω

Input Capacitance C

IN

SDI+ or SDI- to ground 2 pF

POWER SUPPLY

PCLKOUT = 5MHz
(110Mbps)

912

Supply Current (Note 4) I

TOT

VDD = V

DDO

= 2.5V
DOUT_ = all high or
all low

PCLKOUT = 10MHz
(220Mbps)

912

mA

PCLKOUT = 5MHz
(110Mbps)

10 12

Worst-Case Pattern
Supply Current (Note 4)

CL = 5pF, VDD =
V

DDO

= 2.5V,

Figure 2

PCLKOUT = 10MHz
(220Mbps)

10 12

mA

Power-Down Supply Current
(Note 4)

I

TOTZ

3µA

Supply Difference V

SD

MAX9223 VDD to MAX9224 V

DD

-5 +5 %

GROUND POTENTIAL

Ground Difference V

GD

MAX9223 to MAX9224 ground difference -0.2

V

0.8 x V

DDO

-300 ±500 +300

I

TOTW

0.08

+0.2

MAX9223/MAX9224

22-Bit, Low-Power, 5MHz to 10MHz
Serializer and Deserializer Chipset

4 _______________________________________________________________________________________

AC ELECTRICAL CHARACTERISTICS—MAX9223

(VDD= +2.375V to +3.465V, TA= -40°C to +85°C, unless otherwise noted. Typical values are at VDD= +2.5V, TA= +25°C.) (Note 3)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

PCLKIN INPUT REQUIREMENTS (Figure 3)

Input Rise Time t

R

2ns

Input Fall Time t

F

2ns

PCLKIN Period t

P

100 200 ns

High-Level Pulse Width t

PWH

ns

Low-Level Pulse Width t

PWL

ns

Setup Time t

S

3ns

Hold Time t

H

1ns

AC ELECTRICAL CHARACTERISTICS—MAX9224

(VDD= V

DDO

= +2.375V to +3.465V, CL= 5pF, TA= -40°C to +85°C, unless otherwise noted. Typical values are at VDD= V

DDO

=

+2.5V, T

A

= +25°C.) (Notes 3, 5)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

PCLKOUT Period t

P

Figure 4 100 200 ns

High-Level Pulse Width t

PWH

Figure 4

ns

Low-Level Pulse Width t

PWL

Figure 4

ns

Data Valid Before PCLKOUT t

VB

Figure 4 5 ns

Data Valid After PCLKOUT t

VA

Figure 4 5 ns

SERIALIZER AND DESERIALIZER LINK

t

PU1

From V

DD

= V

DDO

= 2.375V when supplies

are ramping up

t

P

Power-Up Time

t

PU2

From PWRDN low to high

t

P

ns

Power-Down Time

From PWRDN high to low 2.8 10 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

= IDD+ I

DDO

.

Note 5: C

L

includes probe and test jig capacitance.

t

PWRDN

0.3 x t

0.3 x t

0.4 x t

0.4 x t

P

P

P

P

0.7 x t

0.7 x t

0.6 x t

0.6 x t

6144 x

4096 x

P

P

P

P

MAX9223/MAX9224

22-Bit, Low-Power, 5MHz to 10MHz

Serializer and Deserializer Chipset

_______________________________________________________________________________________ 5

Test Circuits/Timing Diagrams

t

S

V

IL

V

IH

t

R

V

IH

t

PWL

t

P

t

H

V

IL

V

IH

PCLKIN

t

PWH

V

IL

V

IH

V

IL

V

IH

DIN_

PWRDN

t

F

VIH IS THE MINIMUM HIGH-LEVEL INPUT AND VIL IS THE MAXIMUM LOW-LEVEL INPUT (SEE THE

DC ELECTRICAL CHARACTERISTICS

TABLE).

Figure 3. Serializer Input Timing

ODD DIN_

EVEN DIN_

PCLKIN

Figure 1. Serializer Worst-Case Switching Pattern

ODD DOUT_

EVEN DOUT_

PCLKOUT

Figure 2. Deserializer Worst-Case Switching Pattern

t

VB

V

OL

V

OH

V

OH

t

PWL

t

P

t

VA

V

OL

V

OH

PCLKOUT

t

PWH

V

OL

V

OH

V

OL

V

OH

DOUT_

V

OH

IS THE MINIMUM HIGH-LEVEL OUTPUT AND VOL IS THE MAXIMUM LOW-LEVEL OUTPUT (SEE THE

DC ELECTRICAL CHARACTERISTICS

TABLE).

Figure 4. Deserializer Output Timing