View MAX14998ETOT_4586773.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

19-5033; Rev 0; 10/09
Two-Lane and Four-Lane DisplayPort Passive Switches with Separate AUX/HPD Control
General Description
The MAX4998/MAX14998 high-speed passive switches route DisplayPortTM between two possible destinations or vice versa in laptops or desktop PCs. The MAX4998/ MAX14998 are intended to be used where ultra-highspeed performance and minimal input capacitance is required. The MAX4998 has three double-pole/double-throw (DPDT) switches and one single-pole/double-throw (SPDT) switch. Two DPDT switches are for high-frequency switching, one DPDT switch is for AUX, and the one SPDT switch is for HPD. The two high-frequency switches are selected by SEL1, and the AUX and HPD are selected by SEL2. This part is suitable for two-lane DisplayPort switching. The MAX14998 has six double-pole/double-throw (DPDT) switches. Four DPDT switches are for high-frequency switching, and two DPDT switches are for AUX and HPD. The four high-frequency switches are selected by SEL1, and the AUX and HPD are selected by SEL2. This part is suitable for four-lane DisplayPort switching. The MAX4998/MAX14998 are fully specified to operate from a single +3.3V (typ) power supply. The MAX4998 is available in a 3.5mm x 5.5mm, 28-pin TQFN package with exposed pad, and the MAX14998 is available in a 3.5mm x 9mm, 42-pin TQFN package with exposed pad. Both devices operate over the -40NC to +85NC extended temperature range.
S Single 3.3V Power-Supply Voltage S 5GHz Bandwidth S Support 1.6/2.7Gbps DisplayPort Signals S Excellent Return Loss -14dB at 1.35GHz S Independent High Frequency: AUX Select S Designed for AC-Coupled Circuits S Pass Throughs Are Maintained S Low 850A (max) Supply Current S Small Packages
Features
MAX4998/MAX14998
3.5mm x 5.5mm, 28-Pin TQFN Package with Exposed Pad 3.5mm x 9mm, 42-Pin TQFN Package with Exposed Pad
S Flow-Through Layout for Easy Board Layout S ESD Protection for All I/O Pins: Human Body
Model (HBM) Q4kV
Ordering Information
PART MAX4998ETI+T MAX14998ETO+T* TEMP RANGE -40NC to +85NC -40NC to +85NC PIN-PACKAGE 28 TQFN-EP** 42 TQFN-EP**
Applications
Notebook PCs Desktop PCs
+Denotes a lead(Pb)-free/RoHS-compliant package. T = Tape and reel. *Future Product. Contact factory for availability. **EP = Exposed Pad.
Typical Operating Circuit appears at end of data sheet.
DisplayPort is a trademark of Video Electronics Standards Association (VESA).
_______________________________________________________________ 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.
Two-Lane and Four-Lane DisplayPort Passive Switches with Separate AUX/HPD Control MAX4998/MAX14998
ABSOLUTE MAXIMUM RATINGS
(All voltages referenced to GND, unless otherwise noted.) VDD ..........................................................................-0.3V to +4V SEL1, SEL2, COM_, NO_, NC_ (Note 1).....-0.3V to +(VDD + 0.3)V |VCOM_ - VNO_|, |VCOM_ - VNC_| (Note 1) ..................... 0 to +2V Continuous Current (COM_ to NO_/NC_) ....................... Q70mA Peak Current (COM_ to NO_/NC_) (pulsed at 1ms, 10% duty cycle) ................................. Q70mA Continuous Current (SEL1, SEL2) ................................... Q30mA Peak Current (SEL1, SEL2) (pulsed at 1ms, 10% duty cycle) ................................. Q70mA Continuous Power Dissipation (TA = +70NC) 28-Pin TQFN (derate 28.6mW/NC above +70NC) .......2285mW 42-Pin TQFN (derate 34.5mW/NC above +70NC) .......2758mW Operating Temperature Range .......................... -40NC to +85NC Junction Temperature .....................................................+150NC Storage Temperature Range............................ -65NC to +150NC Package Junction-to-Ambient Thermal Resistance (BJA) (Note 2) 28-Pin TQFN.................................................................35NC/W 42-Pin TQFN.................................................................29NC/W Package Junction-to-Case Thermal Resistance (BJC) (Note 2) 28-Pin TQFN................................................................2.7NC/W 42-Pin TQFN...................................................................2NC/W Lead Temperature (soldering, 10s) ................................+300NC
Note 1: Signals on COM_, NO_, NC_, SEL1, and SEL2 exceeding VDD or GND are clamped by internal diodes. Limit forwarddiode current to the maximum current rating. Note 2: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a 4-layer board. For detailed information on package thermal considerations, refer to www.maxim-ic.com/thermal-tutorial.
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.
ELECTRICAL CHARACTERISTICS
(VDD = +3.3V Q10%, TA = TMIN to TMAX, unless otherwise noted. Typical values are at VDD = +3.3V, TA = +25NC, unless otherwise noted.) (Note 3) PARAMETER ANALOG SWITCH Analog Signal Range Voltage Between COM_ and NO_/NC_ On-Resistance On-Resistance Match Between Pairs of Same Channel On-Resistance Match Between Channels On-Resistance Flatness NO_ or NC_ Off-Leakage Current COM_ On-Leakage Current DIGITAL SIGNALS SEL1 and SEL2 to Switch Turn-On Time 2 tON_SEL VNO_ or VNC_ = +1.0V, RL = 50I, CL = 100pF (Figure 1) 45 120 ns VCOM_, VNO_, VNC_ |VCOM_ - VNO_|, |VCOM_ - VNC_| RON ICOM_ = 15mA; VNO_, VNC_ = 0V, +1.2V VDD = +3.0V; ICOM_ = 15mA; VNO_, VNC_ = 0V (Notes 4, 5) VDD = +3.0V; ICOM_ = 15mA; VNO_, VNC_ = 0V (Notes 4, 5) VDD = +3.0V; ICOM_ = 15mA; VNO_, VNC_ = 0V, +1.2V (Notes 5, 6) VDD = +3.6V; VCOM_ = 0V, +1.2V; VNO_ or VNC_ = +1.2V, 0V VDD = +3.6V; VCOM_ = 0V, +1.2V; VNO_ or VNC_ = VCOM_ or unconnected -1 -1 0 7 (VDD 1.8) 1.8 V V I SYMBOL CONDITIONS MIN TYP MAX UNITS
DRON
0.1
2
I
DRON RFLAT(ON) INO_(OFF) INC_(OFF) ICOM_(ON)
1.0 0.3
4 1.5 1 1
I I FA FA
______________________________________________________________________________________
Two-Lane and Four-Lane DisplayPort Passive Switches with Separate AUX/HPD Control
ELECTRICAL CHARACTERISTICS (continued)
(VDD = +3.3V Q10%, TA = TMIN to TMAX, unless otherwise noted. Typical values are at VDD = +3.3V, TA = +25NC, unless otherwise noted.) (Note 3) PARAMETER SEL1 and SEL2 to Switch Turn-Off Time Differential Insertion Loss Differential Crosstalk Differential Return Loss Signal Data Rate Differential -3dB Bandwidth Differential Off-Isolation LOGIC INPUT (SEL1, SEL2) Input Logic-High Input Logic-Low Input Logic Hysteresis Input Leakage Current POWER SUPPLY Power-Supply Range VDD Supply Current VDD IDD VSEL_ = 0V or VDD 3.0 500 3.6 850 V FA VIH VIL VHYST IIN VSEL_ = 0V or VDD -1 100 +1 1.4 0.5 V V mV FA SYMBOL tOFF_SEL SDD21 SDDCTK SDD11 BR f-3BW SDD21_OFF CONDITIONS VNO_ or VNC_ = +1.0V, RL = 50I, CL = 100pF (Figure 1) f = 0.8GHz (Figure 2) f = 1.35GHz (Figure 2) f = 0.8GHz (Figure 2) f = 1.35GHz (Figure 2) f = 0.8GHz (Figure 2) f = 1.35GHz (Figure 2) RS = RL = 100I balanced RS = RL = 100I balanced f = 1.35GHz (Figure 2) MIN TYP 5 -0.67 -0.95 -37 -34 -20 -14 17 8.5 -28 MAX 50 UNITS ns dB dB dB Gbps GHz dB
MAX4998/MAX14998
Note 3: All units are 100% production tested at TA = +85NC. Limits over the operating temperature range are guaranteed by design and characterization and are not production tested. Note 4: DRON = RON(MAX) - RON(MIN). Note 5: Guaranteed by design. Not production tested. Note 6: Flatness is defined as the difference between the maximum and minimum value of on-resistance as measured over the specified analog signal range.
Test Circuits/Timing Diagrams
+3.3V VDD MAX4998/MAX14998 VN_ NO_ OR NC_ COM_ RL SEL_ LOGIC INPUT SEL GND SWITCH OUTPUT COM_ t OFF_SEL VOUT CL SWITCH OUTPUT COM_ 0V t ON_SEL t OFF_SEL 0.9 x VOUT 0V t ON_SEL 0.9 x VOUT VOUT 0.9 x VOUT 0.9 x VOUT LOGIC INPUT SEL_ VIH VIL 50% t r < 5ns t f < 5ns
CL INCLUDES FIXTURE AND STRAY CAPACITANCE.
VOUT = VN_
(
RL RL + RON
)
Figure 1. Switching Time _______________________________________________________________________________________ 3
Two-Lane and Four-Lane DisplayPort Passive Switches with Separate AUX/HPD Control MAX4998/MAX14998
Test Circuits/Timing Diagrams (continued)
+3.3V 0.1F NETWORK ANALYZER 50 VDD VDD SEL1 SEL2 MAX4998 MAX14998 +3.3V 0.1F NETWORK ANALYZER 50
VDD 0V 0V SEL1 SEL2 MAX4998 MAX14998 COM_+
PORT 1 VIN+ PORT 2 VIN-
VDD COM_+
PORT 1 VIN+ PORT 2 VIN-
50
50
COM_-
COM_-
50 50
NC_+ NO_+ NO_GND NC_-
PORT 3 VOUT+
50 50 NO_+ NO_GND
NC_+
PORT 3 VOUT+
50
PORT 4 VOUT-
50
50
NC_-
PORT 4 VOUT-
50
DIFFERENTIAL INSERTION LOSS/DIFFERENTIAL RETURN LOSS DIFFERENTIAL INSERTION LOSS = 20log
DIFFERENTIAL OFF-ISOLATION DIFFERENTIAL OFF-ISOLATION = 20log
(
VOUT+ - VOUTVIN+ - VIN+3.3V 0.1F
)
(
VOUT+ - VOUTVIN+ - VIN-
)
VDD 0V OR VDD 0V OR VDD SEL1 SEL2 MAX4998 MAX14998 50 50 50 50 COM_+
PORT 1 VIN+ PORT 2 VIN-
NETWORK ANALYZER 50
50
COM_-
COM_+ COM_NO_+/NC_+ NO_-/NC_GND NO_-/NC_PORT 4 VOUT50 PORT 3 VOUT+ 50
NO_+/NC_+
DIFFERENTIAL CROSSTALK DIFFERENTIAL CROSSTALK = 20log
(
VOUT+ - VOUTVIN+ - VIN-
)
MEASUREMENTS ARE STANDARDIZED AGAINST SHORTS AT IC TERMINALS. DIFFERENTIAL OFF-ISOLATION IS MEASURED BETWEEN COM_ AND "OFF" NO_ OR NC_ TERMINAL ON EACH SWITCH. DIFFERENTIAL ON-LOSS IS MEASURED BETWEEN COM_ AND "ON" NO_ OR NC_ TERMINAL ON EACH SWITCH. DIFFERENTIAL CROSSTALK IS MEASURED BETWEEN ANY TWO PAIRS.
Figure 2. Differential On-Loss, Differential Off-Isolation, and Differential Crosstalk 4 ______________________________________________________________________________________
Two-Lane and Four-Lane DisplayPort Passive Switches with Separate AUX/HPD Control
Typical Operating Characteristics
(TA = +25C, unless otherwise noted.)
MAX4998/MAX14998
ON-RESISTANCE vs. COM_ VOLTAGE
MAX4998/MAX14998 toc01
ON-RESISTANCE vs. COM_ VOLTAGE
MAX4998/MAX14998 toc02
SUPPLY CURRENT vs. TEMPERATURE
VDD = 3.3V
700 SUPPLY CURRENT (A) 600 500 400 300 200 100
MAX4998/MAX14998 toc03
8.0 7.5 ON-RESISTANCE () 7.0 6.5 6.0 5.5 5.0 4.5 4.0
VDD = 3.6V ICOM_ = 15mA
10 9 ON-RESISTANCE () 8
VDD = 3.3V ICOM_ = 15mA TA = +85C TA = +25C
800
7
TA = -40C
6 5 4
-0.1 0.1 0.3 0.5 0.7 0.9 1.1 1.3 1.5 1.7 1.9 VCOM_ (V)
-0.1 0.1
0.3
0.5
0.7
0.9
1.1
1.3
1.5
0 -40 -15 10 35 60 85 TEMPERATURE (C)
VCOM_ (V)
LOGIC THRESHOLD vs. SUPPLY VOLTAGE
MAX4998/MAX14998 toc04
TURN-ON/OFF TIME vs. SUPPLY VOLTAGE
MAX4998/MAX14998 toc05
DIFFERENTIAL INSERTION LOSS
DIFFERENTIAL INSERTION LOSS (dB) -1 -2 -3 -4 -5 -6 -7 -8 -9 -10
MAX4998/MAX14998 toc06
1.5 1.3 LOGIC THRESHOLD (V)
VDD = 3.3V
60 50 TURN-ON/OFF TIME (ns) 40 30 20
0
VIH
1.1 0.9 0.7 0.5 3.0 3.1 3.2 3.3 3.4 3.5
tON_SEL
VIL
tOFF_SEL
10 0
3.6
3.0
3.1
3.2
3.3
3.4
3.5
3.6
10
100
1000
10,000
SUPPLY VOLTAGE (V)
SUPPLY VOLTAGE (V)
FREQUENCY (MHz)
DIFFERENTIAL OFF-ISOLATION
MAX4998/MAX14998 toc07
DIFFERENTIAL CROSSTALK
MAX4998/MAX14998 toc08
DIFFERENTIAL RETURN LOSS
-5 -10 -15 -20 -25 -30 -35 -40
MAX4998/MAX14998 toc09
0 DIFFERENTIAL OFF-ISOLATION (dB) -10 -20 -30 -40 -50 -60 -70 -80 10 100 1000
0 -10 DIFFERENTIAL CROSSTALK (dB) -20 -30 -40 -50 -60 -70 -80
0 DIFFERENTIAL RETURN LOSS (dB)
10,000
10
100
1000
10,000
10
100
1000
10,000
FREQUENCY (MHz)
FREQUENCY (MHz)
FREQUENCY (MHz)
_______________________________________________________________________________________
5
Two-Lane and Four-Lane DisplayPort Passive Switches with Separate AUX/HPD Control MAX4998/MAX14998
Pin Configurations
TOP VIEWS
NC2+ NC3+ NO0+ NO1+ NO2+ NO3+ NC4+ NC5+
*EP NO0+ NO1+ NC2+ NC3+
NC2-
NC3-
NO0-
NO1-
NO2-
NO3-
NC4-
24 23 22 21 20 19 18 17 16 15 NC1- 25 NC1+ 26 NC0- 27 NC0+ 28 1 COM0+ 14 NO2+ 13 NO2-
38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 NC1- 39 NC1+ 40 NC0- 41 NC0+ 42 1 VDD 21 NO4+ 20 NO4-
MAX4998
+
2 COM03 COM1+ 4 COM15 COM2+ 6 COM27 VDD 8 COM3+ *EP 9 VDD 10
12 NO3+ 11 SEL2
MAX14998
+
2 COM0+ 3 COM04 COM1+ 5 COM16 VDD 7 COM2+ 8 COM29 COM3+
10 11 12 13 14 15 16 17 COM3COM4+ COM4COM5+ COM5SEL1 SEL2 VDD
TQFN
*CONNECT EXPOSED PAD TO GROUND.
SEL1
TQFN
Pin Description
PIN MAX4998 1 2 3 4 5 6 7, 9, 15, 19 8 10 11 12 13 14 16 17 18 20 21 22 MAX14998 2 3 4 5 7 8 1, 6, 13, 26 9 16 17 28 29 30 36 37 38 31 32 33 NAME COM0+ COM0COM1+ COM1COM2+ COM2VDD COM3+ SEL1 SEL2 NO3+ NO2NO2+ NC3+ NC2NC2+ NO1NO1+ NO0FUNCTION Analog Switch 1. Common positive terminal. Analog Switch 1. Common negative terminal. Analog Switch 2. Common positive terminal. Analog Switch 2. Common negative terminal. Analog Switch 3. Common positive terminal. Analog Switch 3. Common negative terminal. Positive Supply Voltage Input. Connect VDD to a +3.0V to +3.6V supply voltage. Bypass VDD to GND with a 0.1FF ceramic capacitor placed as close to the device as possible (see the Board Layout section). Analog Switch 4. Common positive terminal. Control Signal Input. Selects high-frequency switching. Control Signal Input. Selects AUX/HPD. Analog Switch 4. Normally Open positive terminal. Analog Switch 3. Normally Open negative terminal. Analog Switch 3. Normally Open positive terminal. Analog Switch 4. Normally Closed positive terminal. Analog Switch 3. Normally Closed negative terminal. Analog Switch 3. Normally Closed positive terminal. Analog Switch 2. Normally Open negative terminal. Analog Switch 2. Normally Open positive terminal. Analog Switch 1. Normally Open negative terminal.
6
______________________________________________________________________________________
NC519 NO5+ 18 NO5-
NO0-
NO1-
NC2-
GND
VDD
VDD
VDD
Two-Lane and Four-Lane DisplayPort Passive Switches with Separate AUX/HPD Control
Pin Description (continued)
PIN MAX4998 23 24 25 26 27 28 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- MAX14998 34 -- 39 40 41 42 10 11 12 14 15 18 19 20 21 22 23 24 25 27 35 -- NAME NO0+ GND NC1NC1+ NC0NC0+ COM3COM4+ COM4COM5+ COM5NO5NO5+ NO4NO4+ NC5NC5+ NC4NC4+ NO3NC3EP FUNCTION Analog Switch 1. Normally Open positive terminal. Ground Analog Switch 2. Normally Closed negative terminal. Analog Switch 2. Normally Closed positive terminal. Analog Switch 1. Normally Closed negative terminal. Analog Switch 1. Normally Closed positive terminal. Analog Switch 4. Common negative terminal. Analog Switch 5. Common positive terminal. Analog Switch 5. Common negative terminal. Analog Switch 6. Common positive terminal. Analog Switch 6. Common negative terminal. Analog Switch 6. Normally open negative terminal. Analog Switch 6. Normally open positive terminal. Analog Switch 5. Normally open negative terminal. Analog Switch 5. Normally open positive terminal. Analog Switch 6. Normally Closed negative terminal. Analog Switch 6. Normally Closed positive terminal. Analog Switch 5. Normally Closed negative terminal. Analog Switch 5. Normally Closed positive terminal. Analog Switch 4. Normally Open negative terminal. Analog Switch 4. Normally Closed negative terminal. Exposed Pad. Internally connected to GND. Connect to a large plane to maximize thermal performance. Not intended as an electrical part.
MAX4998/MAX14998
Detailed Description
The MAX4998/MAX14998 high-speed passive switches route one DisplayPort source between two possible destinations or vice versa. The MAX4998 is used to switch two-lanes plus AUX/HPD DisplayPort, and the MAX14998 is used to switch four-lanes plus AUX/HPD DisplayPort. The MAX4998/MAX14998 feature two digital control inputs (SEL1, SEL2) to switch signal paths. The MAX4998/MAX14998 provide two digital control inputs (SEL1, SEL2) to select the signal path between the COM_ and NO_/NC_ channels. SEL1 selects highfrequency switching, while SEL2 selects AUX/HPD. On the MAX4998, switches 0 and 1 are high-frequency
switches and switches 2 and 3 are both low-frequency switches. On the MAX14998, switches 0, 1, 2, and 3 are high-frequency switches and switches 4 and 5 are lowfrequency switches. The truth tables for the MAX4998/ MAX14998 are depicted in the Functional Diagrams/ Truth Tables. Drive SEL_ 0V to VDD to minimize power consumption. The MAX4998/MAX14998 accept standard DisplayPort signals to a maximum of (VDD - 1.8V). Signals on the COM_+ channels are routed to either the NO_+ or NC_+ channels. Signals on the COM_- channels are routed to either the NO_- or NC_- channels. The MAX4998/ MAX14998 are bidirectional switches, allowing COM_, NO_, and NC_, to be used as either inputs or outputs.
Analog Signal Levels
Digital Control Inputs (SEL1, SEL2)
_______________________________________________________________________________________
7
Two-Lane and Four-Lane DisplayPort Passive Switches with Separate AUX/HPD Control MAX4998/MAX14998
Functional Diagrams/Truth Tables
VDD
MAX14998 COM0+ COM0NC0+ NC0NO0+ NO0COM1+ COM1NC1+ NC1NO1+ NO1COM2+ COM2NC2+ NC2NO2+ NO2COM3+ COM3NC3+ NC3NO3+ NO3COM4+ COM4NC4+ NC4NO4+ NO4COM5+ COM5NC5+ NC5NO5+ NO5SEL1 SEL2 SEL1 SEL2 COM3+ COM2+ COM2NC2+ NC2NO2+ NO2NC3+ NO3+ COM1+ COM1COM0+ COM0MAX4998 NC0+ NC0NO0+ NO0NC1+ NC1NO1+ NO1VDD
GND SEL1 0 1 SEL2 0 1 EVENT COM_ TO NC_ COM_ TO NO_ EVENT COM_ TO NC_ COM_ TO NO_ SWITCH 0, 1, 2, 3 0, 1, 2, 3 SWITCH 4, 5 4, 5 SEL1 0 1 SEL2 0 1
GND EVENT COM_ TO NC_ COM_ TO NO_ EVENT COM_ TO NC_ COM_ TO NO_ SWITCH 0, 1 0, 1 SWITCH 2, 3 2, 3
8
______________________________________________________________________________________
Two-Lane and Four-Lane DisplayPort Passive Switches with Separate AUX/HPD Control
Typical Operating Circuit
VDD = +3.3V DOCKING STATION MAX4998 NO0+ NO0NO1+ NO1NO2+ NO2DP01 DP11 AUX1 +1.1V
MAX4998/MAX14998
VCC = +1.1V GRAPHICS AND MEMORY CONTROLLER HUB DP0 DP1 AUX HPD COM0+ COM0COM1+ COM1COM2+ COM2COM3+
10k
NO3+ 1 OF THE 7WZ07 2
HPD1
DisplayPort CONNECTOR NC0+ NC0NC1+ NC1NC2+ NC2-
DP02 DP12 AUX2 +1.1V
10k
CHANNEL SELECT CHANNEL SELECT
SEL1 SEL2
NC3+ 1 OF THE 7WZ07 2
HPD2
7WZ07 DUAL-GATE LOTIC OPERATES FROM +3.3V VCC
NOTE: THE APPLICATION SHOWN IS A TWO-LANE SWITCH BETWEEN THE DOCKING STATION AND DisplayPort CONNECTOR ON A LAPTOP. SEL2 NEEDS TO BE CHANGED FIRST WHEN SWITCHING SO THAT THE AUX/HPD SIGNAL CAN ESTABLISH CONTACT AND SET PARAMETERS THROUGH DDC. THE HPD SIGNALS FROM THE DOCKING STATION AND DP CONNECTOR NEED TO BE INPUT THROUGH A LEVEL TRANSLATOR, SUCH AS A 7WZ07 OR 742G07 NONINVERTING TO THE MAX4998. EACH OUTPUT IS PULLED UP TO MATCH THE LOGIC LEVEL OF THE GMCH. THE COM SIDE OF THE MAX4998 NEEDS TO BE CONNECTED DIRECTLY TO THE GMCH, RUNNING AT LOW VOLTAGE (APPROXIMATELY 1.1V). THIS ESTABLISHES THE COMMON-MODE VOLTAGE FOR THE SWITCH AND KEEPS THE SWITCH WITHIN ITS OPTIMAL RANGE. IF A FOUR-LANE DisplayPort SWITCH IS DESIRED, THE MAX14998 SHOULD BE USED. THE CIRCUIT IS THE SAME EXCEPT THAT DP0 TO DP3 IS USED WITH AUX, AND THE HPD CIRCUITRY IS THE SAME.
_______________________________________________________________________________________
9
Two-Lane and Four-Lane DisplayPort Passive Switches with Separate AUX/HPD Control MAX4998/MAX14998
Applications Information
High-speed switches require proper layout and design procedures for optimum performance. Keep designcontrolled impedance PCB traces as short as possible. Ensure that power-supply bypass capacitors are placed as close to the device as possible. Multiple bypass capacitors are recommended. Connect all grounds and the exposed pad to large ground planes.
Package Information
For the latest package outline information and land patterns, go to www.maxim-ic.com/packages. Note that a "+", "#", or "-" in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the package regardless of RoHS status.
PACKAGE TYPE 28 TQFN-EP 42 TQFN-EP PACKAGE CODE T283555+1 T423590+1 DOCUMENT NO. 21-0184 21-0181
Board Layout
Chip Information
PROCESS: CMOS
Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.
10
(c)
Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 2009 Maxim Integrated Products Maxim is a registered trademark of Maxim Integrated Products, Inc.

▲Up To Search▲

Price & Availability of MAX14998ETOT

	To Download MAX14998ETOT Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .