MAX4886ETO+T Maxim Integrated Products, MAX4886ETO+T Datasheet - Page 6

• Manufacturer Part Number: MAX4886ETO+T
• Description: IC QUAD HDMI/DVI 2:1 SW 42-TQFN
• Manufacturer: Maxim Integrated Products

Specifications of MAX4886ETO+T

• Applications: Monitors, TV
• Interface: DVI
• Voltage - Supply: 3 V ~ 3.6 V
• Package / Case: 42-TQFN Exposed Pad
• Mounting Type: Surface Mount
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: MAX4886ETO+T; MAX4886ETO+TTR

The MAX4886 high-speed analog switch is ideal for
HDMI/DVI switching applications, permitting 2:1 or 1:2
switching. The MAX4886 contains four differential pairs
for HDMI or DVI switching. The MAX4886 connects either
one monitor to one of two digital video signals or one
HDMI/DVI output to one of two connectors or loads.
The MAX4886 differential switches are based on an
nFET architecture with an internal charge pump for gate
overdrive. This advanced architecture results in an
extremely low capacitance and on-resistance needed
for an excellent returns loss.
The MAX4886 features an 8Ω (typ) on-resistance and
2.5pF on-capacitance switches for routing RGB and
CLK video signals.
Quad, High-Speed HDMI/DVI 2:1 Digital
Video Switch
6
_______________________________________________________________________________________
COM3+
COM3-
COM1+
COM2+
COM2-
COM4+
COM4-
COM1-
SEL
GND
Detailed Description
MAX4886
Functional Diagram
V
DD
NO3+
NC4+
NC2+
NC3+
NO3-
NO4+
NC1+
NC1+
NO1+
NO1-
NC2-
NO2+
NC3-
NC4-
NO4-
NO2-
The MAX4886 switches are identical, and any of the
switches can be used to route RGB and CLK video
signals.
The device will also be useful in other high-speed
switching applications such as LVDS and LVPECL.
Signal inputs over the full voltage range (0V to V
passed through the switch with minimal change in on-
resistance (see the Typical Operating Characteristics
section). The switches are bidirectional. Therefore,
COM_, NC_, and NO_ can be either inputs or outputs.
The MAX4886 has a logic input that controls the switch
on/off function. Use SEL to switch COM_ to NO_ or
COM_ to NC_. Table 1 and the Functional Diagram
illustrate the MAX4886 Truth Table.
Proper power-supply sequencing is recommended for
all CMOS devices. Do not exceed the absolute
maximum ratings, because stresses beyond the listed
ratings can cause permanent damage to the device.
Always sequence V
inputs and the logic inputs. Bypass at least one V
input to ground with a 0.1µF capacitor as close to the
device as possible. Use the smallest physical size pos-
sible for optimal performance.
It is also recommended to bypass more than one V
input. A good strategy is to bypass one V
a 0.1µF capacitor and at least a second V
a 1nF to 10nF capacitor. (Use 0603 or smaller physical
size ceramic capacitor).
High-speed switches such as the MAX4886 require
proper PCB layout for optimum performance. Ensure
that impedance-controlled PCB traces for high-speed
signals are matched in length, and as short as possi-
ble. Connect the MAX4886 exposed paddle to a solid
ground plane.
Table 1. Switch Truth Table
Power-Supply Bypassing and Sequencing
SEL
0
1
Applications Information
COM_ to NC_
COM_ to NO_
DD
on first, followed by the switch
PC Board (PCB) Layout
Analog-Signal Levels
Logic Inputs (SEL)
FUNCTION
DD
DD
input with
input with
DD
) are
DD
DD