MAX14886 Datasheet, PDF (1/10 Pages) Maxim Integrated Products – Dual DisplayPort Graphics Multiplexer with HDMI Level Shifter

19-5707; Rev 0; 12/10
EVAALVUAAILTAIOBNLEKIT
Dual DisplayPort Graphics Multiplexer
with HDMI Level Shifter
General Description
The MAX14886 high-speed, low-skew, active redriver
multiplexer is ideal for switching between outputs of
dual-graphics systems and signal conditioning to meet
HDMIK v.1.4 compliance up to 2.25Gbps at an external
HDMI connector. It is used for switching between inte-
grated (e.g., Intel or AMD) and discrete graphics (e.g.,
NVIDIA or ATI GPU). The device is VESA DisplayPortK
Interoperability Guideline v.1.1a-compliant (requires
external DDC logic) and integrates seamlessly with an
external HDMI connector on the motherboard.
The device accommodates differential inputs as low
as 200mV and drives transition minimized differential
signaling (TMDS^®) outputs to 1000mV (typ). A precision
resistor on the output level adjust pin (ADJ) allows differ-
entiated output back-termination resistors of 400I (typ)
to better meet HDMI mask jitter compliance, while main-
taining full TMDS swing requirements. The device sup-
ports AC-(DisplayPort) or DC-(HDMI) coupling directly
to the graphics IC and must be DC-coupled to the HDMI
connector. In addition, the device features current back-
flow protection at the HDMI connector and a low-power,
active-high or active-low shutdown mode.
The device operates with a single +3.3V supply, is
specified over the 0NC to +70NC commercial temperature
range, and is available in a 5mm x 5mm, 40-pin TQFN
package.
Applications
Dual Graphics Notebook Computers
Dual Mode DisplayPort to HDMI External
Switches or Adapters
Features
S Single +3.3V Supply
S Meets HDMI v.1.4 Eye Mask Up to 2.25Gbps
S Meets VESA DisplayPort Interoperability Guideline
v.1.1a (Requires External DDC Logic)
S Low-Power Shutdown Mode
Active High or Active Low
S Output Level Adjust (ADJ) for Output Back-
Termination Without Amplitude Loss
S Seamless Integration into Dual-Graphics Systems
with External HDMI Connector
DC-Coupled HDMI Outputs Mate Directly to
HDMI Connector
AC- or DC-Coupled TMDS-Formatted Inputs
Ordering Information
PART
TEMP RANGE
PIN-PACKAGE
MAX14886CTL+
0NC to +70NC
40 TQFN-EP*
+Denotes a lead(Pb)-free/RoHS-compliant package.
*EP = Exposed pad.
Typical Operating Circuit
3.3V
VAVCC = 3.3V
50Ω
100nF
VCC
D0AP
D0CP
D0AN
D0CN
CKAP
CKAN
CKCP
CKCN
100nF
MAX14886
D0BP
SEL
D0BN
EN1
EN2
ADJ
CKBP
CKBN
GND
3.3kΩ
HDMI is a trademark of HDMI Licensing, LLC.
DisplayPort is a trademark of Video Electronics Standards
Association (VESA).
TMDS is a registered trademark of Silicon Image, Inc.
________________________________________________________________ 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.