MAX4929E Maxim, MAX4929E Datasheet

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MAX4929E

Manufacturer Part Number
MAX4929E
Description
The MAX4929E low-frequency 2:1 switch is ideal for HDMI™/DVI™ switching applications
Manufacturer
Maxim
Datasheet

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MAX4929EEEP+
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The MAX4929E low-frequency 2:1 switch is ideal for
HDMI™/DVI™ switching applications. The device fea-
tures a voltage clamp function to protect low-voltage
systems at the output. The MAX4929E operates with a
single 5V supply or dual or triple supplies. The
MAX4929E provides clamping and voltage translation
without additional components. All external inputs/out-
puts are electrostatic-discharge (ESD)-protected to
±6kV Human Body Model (HBM).
The MAX4929E is available in 20-pin QSOP and 20-pin,
4mm x 4mm, TQFN packages. The device is specified
for the extended -40°C to +85°C operating temperature
range.
HDMI is a trademark of HDMI Licensing, LLC.
DVI is a trademark of Digital Display Working Group (DDWG).
19-0860; Rev 0; 10/07
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.
HDMI1
HDMI2
HD Television Receivers
HD Monitors
High-Resolution Computer Monitors
HDMI 2:1 Low-Frequency Translating Switch
TMDS1
TMDS1
0.1μF
Typical Operating Circuit
HPIR1
SCL1
SDA1
HPDO1
HPIR2
SCL2
SDA2
HPDO2
________________________________________________________________ Maxim Integrated Products
+5V
V+
MAX4929E
SEL
HPIRO
General Description
+3.3V TO +5V
MCU
CLP
HPD
EXESD
SDAO
SCLO
HIZ2
HIZ1
V
DD
2kΩ
Applications
0.1μF
0.1μF
+2V to +3.3V
2kΩ
0.1μF
EPROM
EDID
V
DD
♦ DDC Switches
♦ Protects EDID (Extended Display Identification
♦ Hot-Plug Detect Signal
♦ Two Devices Can Be Used to Form a 4:1 Switch
♦ ±6kV ESD Protection HBM on All External I/Os
♦ Available in Lead-Free, 20-Pin TQFN or 20-Pin QSOP
+ Denotes a lead-free package
* EP = Exposed paddle.
MAX4929EEEP+ -40°C to +85°C
MAX4929EETP+ -40°C to +85°C
Data) EPROM or MCU from Excess Voltage
Packages
Pin Configurations continued at end of data sheet.
TOP VIEW
Low 20pF (typ) Capacitance
Translates MCU Voltage to TTL Levels
No Added Active Components Needed
PART
*EXPOSED PADDLE CONNECTED TO GND OR LEAVE EP UNCONNECTED
HPDO2
EXESD
HPIR2
HIZ1
GND
16
17
18
19
20
TEMP RANGE
15
1
(4mm x 4mm)
Ordering Information
14
2
MAX4929E
TQFN
Pin Configurations
13
3
12
4
*EP
PIN-
PACKAGE
20 QSOP
20 TQFN-EP*
11
5
10 SEL
9
8
7
6
Features
VL
CLP
V+
SCL1
T2044-3
CODE
E20-1
PKG
1

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MAX4929E Summary of contents

Page 1

... The MAX4929E low-frequency 2:1 switch is ideal for HDMI™/DVI™ switching applications. The device fea- tures a voltage clamp function to protect low-voltage systems at the output. The MAX4929E operates with a single 5V supply or dual or triple supplies. The MAX4929E provides clamping and voltage translation without additional components. All external inputs/out- puts are electrostatic-discharge (ESD)-protected to ± ...

Page 2

... TQFN (derate 16.9mW/°C above +70°C) ......1356mW Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability ...

Page 3

HDMI 2:1 Low-Frequency Translating Switch ELECTRICAL CHARACTERISTICS (continued) (V+ = +5V ±10%, CLP = VL = +3.3V ±10%, T PARAMETER SYMBOL LOGIC INPUT (SEL, HPD, HIZ1, HIZ2) Input Logic-Low Voltage Input Logic-High Voltage Hysteresis V Input Logic-Leakage Current LOGIC OUTPUT ...

Page 4

... CROSSTALK IS MEASURED FROM ONE CHANNEL TO THE OTHER CHANNEL. SIGNAL DIRECTION THROUGH SWITCH IS REVERSED; WORST VALUES ARE RECORDED. Figure 2. On-Loss, Off-Isolation, and Crosstalk Figure 3. Logic Delay Timing 4 _______________________________________________________________________________________ Test Circuits/Timing Diagrams +5V 0.1μF V+ MAX4929E SDAO/SCLO SDA_/ SCL_ GND NETWORK ANALYZER 50Ω SDAO/ ...

Page 5

HDMI 2:1 Low-Frequency Translating Switch ( 3.3V, CLP = 3.3V +25°C, unless otherwise noted.) A ON-RESISTANCE vs 4. 0.5 V ...

Page 6

... Serial Clock Input. SCL Mux Input 1. Positive Supply Voltage. Bypass V+ to GND with a 0.1µF or greater ceramic capacitor. Clamp-Voltage Reference. Clamp the maximum voltage of SCLO and SDAO. Bypass CLP to GND with a 0.1µF or greater ceramic capacitor (see Figure 6 and the Typical Operating Circuit). ...

Page 7

... V+ 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 ...

Page 8

... Several ESD testing standards exist for measuring the 1 0 robustness against ESD events. The ESD protection of 0 the MAX4929E is characterized with the HBM method Figure 4 shows the model used to simulate an ESD event 0 resulting from contact with the human body. The model ...

Page 9

... HDMI2 V MCU CHIP SELECT HDMI3 HDMI4 Figure 6. Two MAX4929Es Connected to Form a 4:1 Translating Switch _______________________________________________________________________________________ V+, VL, and CLP to GND using 0.1µF or larger ceramic capacitors as close to the device as possible. PEAK-TO-PEAK RINGING (NOT DRAWN TO SCALE) The MAX4929E is designed for HDMI/DVI switching. The MAX4929E permits hot-plugging to any inputs/ outputs regardless of the power status of the device ...

Page 10

... HDMI 2:1 Low-Frequency Translating Switch Pin Configurations (continued) TOP VIEW HPDO2 1 HPIR2 2 SDA2 3 MAX4929E SCL2 4 HPDO1 5 HPIR1 6 SDA1 7 SCL1 CLP 10 QSOP 10 ______________________________________________________________________________________ PROCESS: BiCMOS 20 EXESD 19 GND 18 HIZ1 17 HIZ2 16 HPD HPIRO 15 14 SDAO 13 SCLO 12 SEL 11 VL Chip Information ...

Page 11

... HDMI 2:1 Low-Frequency Translating Switch (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information go to www.maxim-ic.com/packages.) ______________________________________________________________________________________ Package Information 11 ...

Page 12

... HDMI 2:1 Low-Frequency Translating Switch (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information go to www.maxim-ic.com/packages.) 12 ______________________________________________________________________________________ Package Information (continued) ...

Page 13

... For the latest package outline information go to www.maxim-ic.com/packages.) Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. ...

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