MAX4998 Datasheet, PDF (1/10 Pages) Maxim Integrated Products – Two-Lane and Four-Lane DisplayPort Passive Switches with Separate AUX/HPD Control

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 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).
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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.