MAX14998ETO+ ,Two-Lane and Four-Lane DisplayPort Passive Switches with Separate AUX/HPD ControlApplications*EP = Exposed pad.Notebook PCsTypical Operating Circuit appears at end of data sheet.De ..
MAX149ACAP ,+2.7V to +5.25V / Low-Power / 8-Channel / Serial 10-Bit ADCsGeneral Description ________
MAX149ACAP+ ,+2.7V to +5.25V Low-Power 8-Channel Serial 10-Bit ADCsELECTRICAL CHARACTERISTICS(V = +2.7V to +5.25V; COM = 0; f = 2.0MHz; external clock (50% duty cycle ..
MAX149AEAP ,+2.7V to +5.25V / Low-Power / 8-Channel / Serial 10-Bit ADCsELECTRICAL CHARACTERISTICSV = +2.7V to +5.25V; COM = 0V; f = 2.0MHz; external clock (50% duty cycle ..
MAX149BCAP ,+2.7V to +5.25V / Low-Power / 8-Channel / Serial 10-Bit ADCsMAX148/MAX14919-0464; Rev 2; 5/98+2.7V to +5.25V, Low-Power, 8-Channel, Serial 10-Bit ADCs
MAX149BEAP ,+2.7V to +5.25V / Low-Power / 8-Channel / Serial 10-Bit ADCsMAX148/MAX14919-0464; Rev 2; 5/98+2.7V to +5.25V, Low-Power, 8-Channel, Serial 10-Bit ADCs
MAX4121CSA ,330MHz Buffered Video Switches/ Crosspoint Building Blocksfeaturesinclude -92dB crosstalk and -78dB isolation (MAX4121).' Ultra-Low Switching GlitchThe MAX41 ..
MAX4122EUK ,Single/Dual/Quad / Wide-Bandwidth / Low-Power / Single-Supply Rail-to-Rail I/O Op AmpsELECTRICAL CHARACTERISTICS (continued)(V = +2.7V to +6.5V, V = 0V, V = 0V, V = V /2, R tied to V /2 ..
MAX4122EUK+T ,Single/Dual/Quad, Wide-Bandwidth, Low-Power, Single-Supply Rail-to-Rail I/O Op AmpsMAX4122–MAX412919-1087; Rev 1; 8/97Single/Dual/Quad, Wide-Bandw idth, Low -Pow er,Single-Supply Rai ..
MAX4122EUK-T ,Single/Dual/Quad, Wide-Bandwidth, Low-Power, Single-Supply Rail-to-Rail I/O Op AmpsFeaturesThe MAX4122–MAX4129 family of operational amplifiers♦ 5-Pin SOT23 Package (MAX4122/4)combin ..
MAX4123ESA ,Single/Dual/Quad / Wide-Bandwidth / Low-Power / Single-Supply Rail-to-Rail I/O Op AmpsApplicationsMAX4123C/D 0°C to +70°C Dice* —Battery-Powered InstrumentsMAX4123ESA -40°C to +85°C 8 S ..
MAX4123EUA ,Single/Dual/Quad / Wide-Bandwidth / Low-Power / Single-Supply Rail-to-Rail I/O Op AmpsMAX4122–MAX412919-1087; Rev 1; 8/97Single/Dual/Quad, Wide-Bandwidth, Low-Power,Single-Supply Rail-t ..
MAX14998ETO+
Two-Lane and Four-Lane DisplayPort Passive Switches with Separate AUX/HPD Control
Two-Lane and Four-Lane DisplayPort Passive
Switches with Separate AUX/HPD Control
MAX4998/MAX14998
19-5033; Rev 1; 8/10
Typical Operating Circuit appears at end of data sheet.
General Description
The MAX4998/MAX14998 high-speed passive switches
route DisplayPort™ between two possible destinations
or vice versa in laptops or desktop PCs. The MAX4998/
MAX14998 are intended to be used where ultra-high-
speed 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-frequen-
cy 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.
Applications
Notebook PCs
Desktop PCs
FeaturesSingle 3.3V Power-Supply Voltage8.5GHz (typ) BandwidthSupport 1.6/5.4Gbps DisplayPort SignalsHandles DisplayPort v1.1 SignalsHandles DisplayPort v1.2 Signals Excellent Return Loss -13dB at 2.7GHzIndependent High Frequency: AUX SelectDesigned for AC-Coupled CircuitsPass Throughs Are MaintainedLow 850µA (max) Supply CurrentSmall Packages3.5mm x 5.5mm, 28-Pin TQFN Package with Exposed Pad 3.5mm x 9mm, 42-Pin TQFN Package with Exposed PadFlow-Through Layout for Easy Board LayoutESD Protection for All I/O Pins: Human Body
Model (HBM) Q4kV
Ordering Information
+Denotes a lead(Pb)-free/RoHS-compliant package.
T = Tape and reel.
*EP = Exposed pad.
DisplayPort is a trademark of Video Electronics Standards
EVALUATION KIT
AVAILABLE
PARTTEMP RANGEPIN-PACKAGE
MAX4998ETI+T-40NC to +85NC28 TQFN-EP*
MAX14998ETO+T-40NC to +85NC42 TQFN-EP*
Two-Lane and Four-Lane DisplayPort Passive
Switches with Separate AUX/HPD Control
MAX4998/MAX14998
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.
(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
Soldering Temperature (reflow) ......................................+260NC
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)
ABSOLUTE MAXIMUM RATINGS
Note 1: Signals on COM_, NO_, NC_, SEL1, and SEL2 exceeding VDD or GND are clamped by internal diodes. Limit forward-
diode current to the maximum current rating.
Note 2: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-
layer board. For detailed information on package thermal considerations, refer to /thermal-tutorial.
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS
ANALOG SWITCH
Analog Signal RangeVCOM_, VNO_,
VNC_
(VDD -
1.8)V
Voltage Between COM_ and
NO_/NC_
|VCOM_ - VNO_|,
|VCOM_ - VNC_|01.8V
On-Resistance RONICOM_ = 15mA;
VNO_, VNC_ = 0V, +1.2V 7I
On-Resistance Match
Between Pairs of Same
Channel
DRONVDD = +3.0V; ICOM_ = 15mA; VNO_,
VNC_ = 0V (Notes 4, 5)0.12I
On-Resistance Match
Between Channels DRONVDD = +3.0V; ICOM_ = 15mA; VNO_,
VNC_ = 0V (Notes 4, 5)1.04I
On-Resistance FlatnessRFLAT(ON)VDD = +3.0V; ICOM_ = 15mA; VNO_,
VNC_ = 0V, +1.2V (Notes 5, 6)0.31.5I
NO_ or NC_ Off-Leakage
Current
INO_(OFF)
INC_(OFF)
VDD = +3.6V; VCOM_ = 0V, +1.2V;
VNO_ or VNC_ = +1.2V, 0V -11FA
COM_ On-Leakage
Current ICOM_(ON) VDD = +3.6V; VCOM_ = 0V, +1.2V;
VNO_ or VNC_ = VCOM_ or unconnected-11FA
DIGITAL SIGNALS
SEL1 and SEL2 to Switch tON_SELVNO_ or VNC_ = +1.0V, RL = 50I, 45120ns
Two-Lane and Four-Lane DisplayPort Passive
Switches with Separate AUX/HPD Control
MAX4998/MAX14998
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)
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
tr < 5ns
tf < 5ns
50%
VIL
LOGIC
INPUT
SEL
COM_
GND
SEL_
CL INCLUDES FIXTURE AND STRAY CAPACITANCE.
VN_
VIH
NO_ OR NC_
0.9 x VOUT0.9 x VOUT
0.9 x VOUT0.9 x VOUT
tON_SEL
tOFF_SEL
VOUTSWITCH
OUTPUT
COM_
SWITCH
OUTPUT
COM_
LOGIC
INPUT
SEL_VDD
+3.3V
VOUT
tON_SEL
tOFF_SEL
MAX4998/MAX14998
VOUT = VN_RL
RL + RON()
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS
SEL1 and SEL2 to Switch
Turn-Off Time tOFF_SELVNO_ or VNC_ = +1.0V, RL = 50I,
CL = 100pF (Figure 1)550ns
Differential Insertion LossSDD21f = 0.8GHz (Figure 2)-0.67dBf = 1.35GHz (Figure 2)-0.95
Differential CrosstalkSDDCTKf = 0.8GHz (Figure 2)-37dBf = 1.35GHz (Figure 2) -34
Differential Return LossSDD11f = 0.8GHz (Figure 2)-20dBf = 1.35GHz (Figure 2)-14
Signal Data RateBRRS = RL = 100I balanced17Gbps
Differential -3dB Bandwidthf-3BWRS = RL = 100I balanced8.5GHz
Differential Off-IsolationSDD21_OFFf = 1.35GHz (Figure 2)-28dB
LOGIC INPUT (SEL1, SEL2)
Input Logic-HighVIH1.4V
Input Logic-LowVIL0.5V
Input Logic HysteresisVHYST100mV
Input Leakage CurrentIINVSEL_ = 0V or VDD-1+1FA
POWER SUPPLY
Power-Supply RangeVDD3.03.6V
VDD Supply CurrentIDDVSEL_ = 0V or VDD500850FA
Two-Lane and Four-Lane DisplayPort Passive
Switches with Separate AUX/HPD Control
MAX4998/MAX14998
Test Circuits/Timing Diagrams (continued)
COM_+
COM_-
VDD
+3.3V
NC_+
NC_-
SEL1
GND
DIFFERENTIAL INSERTION LOSS/DIFFERENTIAL RETURN LOSS
PORT 1
PORT 2
PORT 3
PORT 4
NETWORK
ANALYZER
0.1µF
VIN+
VIN-
VOUT+
VOUT-
NO_+
NO_-
SEL20V
DIFFERENTIAL INSERTION LOSS = 20log()
VOUT+ - VOUT-
VIN+ - VIN-
50Ω
50Ω
50Ω
50Ω
50Ω
50Ω
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.
MAX4998
MAX14998
COM_+
COM_-
VDD
+3.3V
NC_+
NC_-
SEL1
GND
DIFFERENTIAL OFF-ISOLATION
PORT 1
PORT 2
PORT 3
PORT 4
NETWORK
ANALYZER
0.1µF
VIN+
VIN-
VOUT+
VOUT-
NO_+
NO_-
SEL2VDD
VDD
DIFFERENTIAL OFF-ISOLATION = 20log()
VOUT+ - VOUT-
VIN+ - VIN-
50Ω
50Ω
50Ω
50Ω
50Ω
50Ω
MAX4998
MAX14998
COM_+
COM_-
VDD
+3.3V
NO_+/NC_+
NO_-/NC_-
SEL1
GND
DIFFERENTIAL CROSSTALK
PORT 1
PORT 2
PORT 3
PORT 4
NETWORK
ANALYZER
0.1µF
VIN+
VIN-
VOUT+
VOUT-
NO_+/NC_+
NO_-/NC_-
SEL20V OR VDD
0V OR VDD
DIFFERENTIAL CROSSTALK = 20log()
VOUT+ - VOUT-
VIN+ - VIN-
50Ω
50Ω
COM_+
COM_-50Ω
50Ω
50Ω
50Ω
50Ω
50Ω
MAX4998
MAX14998
Two-Lane and Four-Lane DisplayPort Passive
Switches with Separate AUX/HPD Control
MAX4998/MAX14998
Typical Operating Characteristics
(TA = +25°C, unless otherwise noted.)
DIFFERENTIAL RETURN LOSS
MAX4998/MAX14998 toc09
DIFFERENTIAL RETURN LOSS (dB)
-4010,000
DIFFERENTIAL CROSSTALK
MAX4998/MAX14998 toc08
DIFFERENTIAL CROSSTALK (dB)
-8010,000
DIFFERENTIAL OFF-ISOLATION
MAX4998/MAX14998 toc07
DIFFERENTIAL OFF-ISOLATION (dB)
-8010,000
DIFFERENTIAL INSERTION LOSS
MAX4998/MAX14998 toc06
FREQUENCY (MHz)
DIFFERENTIAL INSERTION LOSS (dB)
-1010,000
TURN-ON/OFF TIME vs. SUPPLY VOLTAGE
MAX4998/MAX14998 toc05
SUPPLY VOLTAGE (V)
TURN-ON/OFF TIME (ns)
tON_SEL
tOFF_SEL
LOGIC THRESHOLD vs. SUPPLY VOLTAGE
MAX4998/MAX14998 toc04
SUPPLY VOLTAGE (V)
LOGIC THRESHOLD (V)
VDD = 3.3V
VIH
VIL
SUPPLY CURRENT vs. TEMPERATURE
MAX4998/MAX14998 toc03
TEMPERATURE (°C)
SUPPLY CURRENT (µA)35-1510
VDD = 3.3V
ON-RESISTANCE vs. COM_ VOLTAGE
MAX4998/MAX14998 toc02
VCOM_ (V)
ON-RESISTANCE (
VDD = 3.3V
ICOM_ = 15mA
TA = +85°C
TA = +25°C
TA = -40°C
ON-RESISTANCE vs. COM_ VOLTAGE
MAX4998/MAX14998 toc01
VCOM_ (V)
ON-RESISTANCE (
VDD = 3.6V
ICOM_ = 15mA
Two-Lane and Four-Lane DisplayPort Passive
Switches with Separate AUX/HPD Control
MAX4998/MAX14998
Pin Configurations
Pin Description
MAX4998MAX14998
TOP VIEWS
TQFNSEL2
NO3+
NO2-
NO2+
+NC0+
NC0-
NC1+
*EP*EP
*CONNECT EXPOSED PAD TO GROUND.
NC1-2345678910232221201918171615
SEL1
COM3+
COM2-
COM2+
COM1-
COM1+
COM0-
COM0+
NC3+NC2-NC2+V
NO1-NO1+NO0-NO0+GND
TQFN23456789101112131415161737363534333231302928272625242322
COM4-
COM5+
COM5-
SEL1SEL2
COM4+
COM3-
COM3+
COM2-
COM2+
COM1-
COM1+
COM0-
COM0+
NO5-
NO5+
NO4-
NO4+
NC0+
NC0-
NC1+
NC1-
NO3-V
NC4+NC4-NC5+NC5-NO3+NO2-NO2+NO1-NO1+NO0-NO0+NC3-NC3+NC2-NC2+
PINNAMEFUNCTIONMAX4998MAX149982COM0+Analog Switch 1. Common positive terminal.3COM0-Analog Switch 1. Common negative terminal.4COM1+Analog Switch 2. Common positive terminal.5COM1-Analog Switch 2. Common negative terminal.7COM2+Analog Switch 3. Common positive terminal.8COM2-Analog Switch 3. Common negative terminal.
7, 9, 15, 191, 6, 13, 26VDD
Positive Supply Voltage Input. Connect VDD to a +3.0V to +3.6V supply voltage.
Bypass VDD to GND with a 0.1mF ceramic capacitor placed as close to the device as
possible (see the Board Layout section).9COM3+Analog Switch 4. Common positive terminal.16SEL1Control Signal Input. Selects high-frequency switching.17SEL2Control Signal Input. Selects AUX/HPD.28NO3+Analog Switch 4. Normally Open positive terminal.29NO2-Analog Switch 3. Normally Open negative terminal.30NO2+Analog Switch 3. Normally Open positive terminal.36NC3+Analog Switch 4. Normally Closed positive terminal.37NC2-Analog Switch 3. Normally Closed negative terminal.38NC2+Analog Switch 3. Normally Closed positive terminal.31NO1-Analog Switch 2. Normally Open negative terminal.32NO1+Analog Switch 2. Normally Open positive terminal.33NO0-Analog Switch 1. Normally Open negative terminal.
