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PDF MAX14998 Data sheet ( Hoja de datos )

Número de pieza MAX14998
Descripción Two-Lane and Four-Lane DisplayPort Passive Switches
Fabricantes Maxim Integrated Products 
Logotipo Maxim Integrated Products Logotipo



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No Preview Available ! MAX14998 Hoja de datos, Descripción, Manual

19-5033; Rev 0; 10/09
www.DataSheet4U.com
Two-Lane and Four-Lane DisplayPort Passive
Switches with Separate AUX/HPD Control
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.
Notebook PCs
Desktop PCs
Applications
Features
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 850µA (max) Supply Current
S Small Packages
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
TEMP RANGE PIN-PACKAGE
MAX4998ETI+T
-40NC to +85NC 28 TQFN-EP**
MAX14998ETO+T* -40NC to +85NC 42 TQFN-EP**
+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.

1 page




MAX14998 pdf
www.DataSheet4U.com
Two-Lane and Four-Lane DisplayPort Passive
Switches with Separate AUX/HPD Control
(TA = +25°C, unless otherwise noted.)
Typical Operating Characteristics
ON-RESISTANCE vs. COM_ VOLTAGE
8.0
VDD = 3.6V
7.5 ICOM_ = 15mA
7.0
6.5
6.0
5.5
5.0
4.5
4.0
-0.1 0.1 0.3 0.5 0.7 0.9 1.1 1.3 1.5 1.7 1.9
VCOM_ (V)
ON-RESISTANCE vs. COM_ VOLTAGE
10
VDD = 3.3V
9 ICOM_ = 15mA
TA = +85°C
8
TA = +25°C
7
TA = -40°C
6
5
4
-0.1 0.1 0.3 0.5 0.7 0.9 1.1 1.3 1.5
VCOM_ (V)
SUPPLY CURRENT vs. TEMPERATURE
800
VDD = 3.3V
700
600
500
400
300
200
100
0
-40
-15 10 35 60
TEMPERATURE (°C)
85
LOGIC THRESHOLD vs. SUPPLY VOLTAGE
1.5
VDD = 3.3V
1.3
VIH
1.1
0.9
VIL
0.7
0.5
3.0
3.1 3.2 3.3 3.4 3.5
SUPPLY VOLTAGE (V)
3.6
TURN-ON/OFF TIME vs. SUPPLY VOLTAGE
60
50
40
tON_SEL
30
20
tOFF_SEL
10
0
3.0 3.1 3.2 3.3 3.4 3.5 3.6
SUPPLY VOLTAGE (V)
0
-1
-2
-3
-4
-5
-6
-7
-8
-9
-10
10
DIFFERENTIAL INSERTION LOSS
100 1000
FREQUENCY (MHz)
10,000
DIFFERENTIAL OFF-ISOLATION
0
-10
-20
-30
-40
-50
-60
-70
-80
10
100 1000
FREQUENCY (MHz)
10,000
0
-10
-20
-30
-40
-50
-60
-70
-80
10
DIFFERENTIAL CROSSTALK
100 1000
FREQUENCY (MHz)
10,000
0
-5
-10
-15
-20
-25
-30
-35
-40
10
DIFFERENTIAL RETURN LOSS
100 1000
FREQUENCY (MHz)
10,000
_______________________________________________________________________________________   5

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