MAX3845
DVI/HDMI 2:4 TMDS Fanout Switch and Cable Driver
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Industry's First DVI/HDMI Fanout Switch Configurable to a Full 4x4 Switch
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Features
- Two DVI/HDMI TMDS-Compatible Inputs and Four DVI/HDMI TMDS-Compatible Outputs
- Save Power by Turning Off Unused Outputs
- Each Output Independently Selects Input 1 or Input 2
- Three Preemphasis Settings Extend Cable Reach Up to 7m
- Operation Up to 1.65Gbps
- 14mm x 14mm, 100-Pin TQFP Package with Exposed Paddle for Heat Sinking
- 3.3V Power Supply
- TMDS Data (x3) and Clock (x1) Can Be Arbitrarily Assigned to the Four Identical Switched Paths (A, B, C, and D)
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The MAX3845 is a TMDS® 2-to-4 fanout switch and cable driver for multimonitor distribution of DVI™ or HDMI™ signaling up to 1.65Gbps. Both inputs and outputs are standard TMDS signaling as per DVI and HDMI standards. Because TMDS links are "point-to-point", buffering is required for fanout applications.
Four DVI/HDMI TMDS outputs are provided for fanout distribution. Each TMDS output can be independently sourced from either input or can be turned off. Each TMDS input or output is composed of four differential channels that can be arbitrarily assigned to the three data signals and the 1/10th-rate clock. The data rate depends on resolution, but it can vary from 250Mbps (VGA) to 1.65Gbps (UXGA or 1080p/60).
Typical applications include multiroom display of the same video source or industrial/commercial signage applications such as airport monitors or trading room floor displays. The MAX3845 includes selectable output preemphasis that extends output cable reach up to an additional 7m.
For DDC switching, use the companion MAX4814E 2:4 low-resistance CMOS crosspoint switch. DDC switching is not required for applications that connect DDC to one reference monitor only.
The MAX3845 can be configured to create a 2 x 8 or 4 x 4 switch (see the Typical Operating Circuit diagrams located in the full data sheet).
The MAX3845 is available in a 14mm × 14mm, 100-pin TQFP-EP package and operates over the -10°C to +85°C temperature range.
Applications
- Digital Signage and Industrial Display
- DVI/HDMI Crosspoint Switches
- DVI/HDMI Distribution Amplifiers
- Home A/V Receivers
- PC Monitor Distribution
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Analog Devices Support Portal is a one-stop shop to answer all your ADI questions.
Visit the ADI Support Page
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MAX3845
Documentation
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Data Sheet 1
Reliability Data 1
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| MAX3845UCQ+ |
100-TQFP_EP-14X14X1.0
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| MAX3845UCQ+D |
100-TQFP_EP-14X14X1.0
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| MAX3845UCQ+TD |
100-TQFP_EP-14X14X1.0
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- MAX3845UCQ+
- Pin/Package Drawing
-
100-TQFP_EP-14X14X1.0
- Documentation
-
HTML
Material Declaration
-
HTML
Reliablity Data
- CAD Symbols, Footprints, and 3D Models
-
Ultra Librarian
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SamacSys
- MAX3845UCQ+D
- Pin/Package Drawing
-
100-TQFP_EP-14X14X1.0
- Documentation
-
HTML
Material Declaration
-
HTML
Reliablity Data
- CAD Symbols, Footprints, and 3D Models
-
Ultra Librarian
-
SamacSys
- MAX3845UCQ+TD
- Pin/Package Drawing
-
100-TQFP_EP-14X14X1.0
- Documentation
-
HTML
Material Declaration
-
HTML
Reliablity Data
- CAD Symbols, Footprints, and 3D Models
-
Ultra Librarian
-
SamacSys
Software & Part Ecosystem
Evaluation Kits 2
MAX4814EEVKIT
Evaluation Kit for the MAX3845 and MAX4814E
Features and Benefits
- Full 4-Output Fanout
- Independent DDC Routing to Any Output from Each Input with Priority to Input 1
- DVI-I and HDMI Connectors
- Supports Full 1080p and 1920 x 1200 Resolutions
- Input 2 Includes MAX3815 for Extended Cable Usage Up to 60 Meters
- Independent Selection of Preemphasis Level on Each Output
- All TMDS I/Os Feature 15kV HBM ESD Protection
- Wall-Plug Power-Supply Operation
- Fully Assembled and Tested
Product Detail
The MAX3845/MAX4814E evaluation kit (EV kit) is an assembled demonstration board that provides in-system evaluation of the MAX3845 DVI™/HDMI™ 2:4 TMDS® fanout/buffer and the MAX4814E 2:4 low-frequency switch. The input and output connections are made through Molex DVI and HDMI connectors for direct connection to DVI and HDMI cables.
An AC-to-DC wall-plug power adapter is included to provide power for the board. The board contains DC-DC conversion circuitry to allow operation of the +3.3V-supplied MAX3845 from the +5V DC wall-plug source.
Applications
- Digital Signage and Industrial Display
- DVI/HDMI Crosspoint Switches
- DVI/HDMI Distribution Amplifiers
- Home A/V Receivers
- PC Monitor Distribution
MAX3845EVKIT
Evaluation Kit for the MAX3845 and MAX4814E
Features and Benefits
- Full 4-Output Fanout
- Independent DDC Routing to Any Output from Each Input with Priority to Input 1
- DVI-I and HDMI Connectors
- Supports Full 1080p and 1920 x 1200 Resolutions
- Input 2 Includes MAX3815 for Extended Cable Usage Up to 60 Meters
- Independent Selection of Preemphasis Level on Each Output
- All TMDS I/Os Feature 15kV HBM ESD Protection
- Wall-Plug Power-Supply Operation
- Fully Assembled and Tested
Product Detail
The MAX3845/MAX4814E evaluation kit (EV kit) is an assembled demonstration board that provides in-system evaluation of the MAX3845 DVI™/HDMI™ 2:4 TMDS® fanout/buffer and the MAX4814E 2:4 low-frequency switch. The input and output connections are made through Molex DVI and HDMI connectors for direct connection to DVI and HDMI cables.
An AC-to-DC wall-plug power adapter is included to provide power for the board. The board contains DC-DC conversion circuitry to allow operation of the +3.3V-supplied MAX3845 from the +5V DC wall-plug source.
Applications
- Digital Signage and Industrial Display
- DVI/HDMI Crosspoint Switches
- DVI/HDMI Distribution Amplifiers
- Home A/V Receivers
- PC Monitor Distribution
Tools & Simulations 1
IBIS Model 1
IBIS Model
