1 Features
• AC-coupled or DC-coupled input and output
supporting HDMI 2.1 data rates up to 12 Gbps
– Backwards compatible to HDMI 1.4b and HDMI
2.0b
– HDMI 2.1 fixed rate link (FRL) of 3, 6, 8, 10,
and 12 Gbps
– Supports HDMI 2.1 three and four lane FRL
• Optimized for HDMI sink applications
• Adaptive and fixed equalizer up to 12 dB at 6 GHz
• I2C or pin strap programmable
• Integrated HPD level shifter supporting both 1.8-V
and 3.3-V LVCMOS levels
• Full lane swap on main lanes
• Integrated fan-out buffer for applications which
require separate clock and data paths
• Signal detect output indicator
• Digital display control (DDC) snooping function for
link configuration
• Low power consumption:
– 12G FRL four lanes active limited: 575 mW
– 12 G FRL four lanes active linear: 220 mW
– Power down: 0.6 mW
• Available in commercial and industrial temperature
• Single 3.3-V power supply
• 40-pin, 0.4 mm pitch, 4 mm × 6 mm, WQFN
package

2 Applications
• Notebooks and desktops
• TV
• Home theater and entertainment
• Gaming systems
• Docking stations
• Pro audio, video, and signage

3 Description
The TMDS1204 is an HDMI 2.1 redriver supporting
data rates up to 12 Gbps. It is backwards
compatible for HDMI 1.4b and HDMI 2.0b. The
high-speed differential inputs and outputs can either
be AC-coupled or DC-coupled, which qualifies the
TMDS1204 to be used as a DP++ to HDMI level
shifter or HDMI redriver. The TMDS1204 can support
both 3 and 4 lane HDMI 2.1 FRL at 3, 6, 8, 10, and
12-Gbps.
The TMDS1204 is a hybrid redriver supporting both
source and sink applications. A hybrid redriver can
operate either in a linear or limited redriver function.
When configured as a limited redriver, the TMDS1204
differential output voltage levels are independent
of the graphics process unit (GPU) output levels
ensuring HDMI compliant levels at the receptacle.
The limited redriver mode is recommended for HDMI
source applications. When configured as a linear
redriver, the TMDS1204 differential output levels are
a linear function of the GPU output levels enabling
TMDS1204 to be transparent to link training and
operate as a channel shortener. Linear redriver mode
is recommended for HDMI sink applications.
The TMDS1204 has an integrated HPD level shifter.
The HPD level shifter will shift the 5-V HPD signal
to either 1.8-V or 3.3-V. The level shifter output
can also be configured for push, pull, or open-drain.
The integration of the level shifter eliminates discrete
solutions and thereby saves system cost.
The TMDS1204 supports single power supply rails
of 3.3-V on VCC and is offered in a commercial
temperature (TMDS1204) and industrial temperature
(TMDS1204I).