MAX4929EEEP+T Maxim Integrated Products, MAX4929EEEP+T Datasheet - Page 7

• Manufacturer Part Number: MAX4929EEEP+T
• Description: IC SWITCH HDMI 2:1 20-QSOP
• Manufacturer: Maxim Integrated Products
• Series: 4000r

Specifications of MAX4929EEEP+T

• Function: Switch
• Circuit: 1 x 2:1
• On-state Resistance: 25 Ohm
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 20-QSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

The MAX4929E low-frequency 2:1 switch is ideal for the
low-frequency portion of HDMI/DVI switching applica-
tions. The device features three independent voltage
inputs that allow the user to match any voltage level
encountered in switching without additional compo-
nents. The V+ range is from 4.5V to 5.5V to match the
HDMI/DVI 5V requirements. CLP is set to match the
EDID EPROM from 3.3V to 5.5V. VL is connected to the
same supply as the system MCU. All pins going to the
HDMI/DVI connectors are ESD-protected to ±6kV
Human Body Model (HBM).
The MAX4929E has two enable inputs. The enable
function allows the device to operate in normal mode or
go into a high-Z state. It is possible to control two
MAX4929Es with a single control bit, creating a 4:1
equivalent switch using a minimum of external compo-
nents (see Figure 6).
Supply or signals sequencing are not required for the
MAX4929E. Supply voltages V+, VL, and CLP can be
HDMI 2:1 Low-Frequency Translating Switch
HPDO1
HPDO2
HPIR2
HPIR1
SDA1
SDA2
SCL1
SCL2
_______________________________________________________________________________________
Detailed Description
HPD LOGIC
V+
(V+)
MAX4929E
GND
applied in any order. Signals can be applied in any
order as well.
The MAX4929E features a voltage clamp function for the
two 2:1 switch. Inputs to SCL_/SDA_ are V+ level compat-
ible. Maximum output voltages of SCLO/SDAO are
clamped to CLP. For optimum performance connect the
EDID EPROM supply voltage to CLP (see Figure 6). For
proper operation of the voltage clamp, connect
SCLO/SDAO to CLP through the pullup resistors. For
maximum output range, connect CLP to V+. The output of
the switch is connected to the EDID EPROM, voltages
from 3V to 5.5V are expected.
VL is the supply to input logic HIZ_, SEL, and HPD.
Connect VL to the same supply as the system MCU for
compatibility.
V+ is the supply to the input logic of the HPIR1 and
HPIR2 inputs.
HPD LOGIC
(VL)
CLP
VL
Functional Diagram
Analog Switch
SDAO
SEL
HPD
SCLO
HPIRO
HIZ1
HIZ2
EXESD
Logic Inputs
7