Reference Design HFRD-34.0 (Rev.3, 05/08)
Maxim Integrated Products
Page 7 of
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6 IC Summary
A summary of the ICs used in this reference
design is provided below, along with links to
additional information for each device.
HFRD-34.0 demonstrates the operation of a small
sample of Maxim’s digital and analog switches,
digital video equalizers, power-management
products, and audio drivers. For additional
information about other Maxim products for this
and many other applications, please visit:
www.maxim-ic.com
.
Video Section Components
Part Number
Functional Description
MAX3845
The MAX3845 is a TMDS® 2-to-4 fanout switch and cable driver for multimonitor distribution
of DVI or HDMI™ (
high-definition multimedia interface)
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, and industrial and
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.
Additional information:
www.maxim-ic.com/MAX3845
MAX3814
The MAX3814 TMDS EQ/driver compensates for FR-4 and cable losses to the DVI/HDMI
transmit connector, and provides a fully compliant DVI/HDMI TMDS output. The device can
also be used in DVI/HDMI cable applications to extend reach and improve jitter margin of
cable channels at the receive-side connector.
Additional information:
www.maxim-ic.com/MAX3814
MAX4814E
The MAX4814E bidirectional 2:4 HDMI switch provides routing for low-frequency signals. The
MAX4814E operates from a single +5.0V ±10% supply voltage and is ideal for connecting
multiple HDMI sources to multiple loads.
Additional information:
www.maxim-ic.com/MAX4814
MAX3208
The MAX3208E is a low-capacitance, ±15kV ESD-protection diode array with an integrated
transient voltage suppressor (TVS) clamp. The device is suitable for high-speed and general-
signal ESD protection. Low input capacitance makes this device ideal for ESD protection of
signals in HDTV; PC monitors (DVI, HDMI); PC peripherals (FireWire®, USB 2.0); server
interconnect (PCI Express®, Infiniband®); datacom; and interchassis interconnect.
Additional information:
www.maxim-ic.com/MAX3208