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HDMI protector IC rolls for HD video apps

Posted: 19 Oct 2006 ?? ?Print Version ?Bookmark and Share

Keywords:STMicro? HDMIULC6-4SC6? HDMI? port protection? ST?

STMicro's HDMIULC6-4SC6 protection IC

STMicroelectronics (ST) has added the HDMIULC6-4SC6 to its portfolio of ultralow-capacitance protection ICs for the high-definition video market. This ASIC provides complete rail-to-rail protection of four data lines without compromising signal integrity. It allows HDMI to run at 1.65Gbps and even up to 3.2Gbps, with 15kV contact and air ESD protection.

Protecting high-speed data ports is particularly challenging. Any capacitive loading introduced by protection devices can significantly degrade signal integrity. This is particularly significant at the high data rates required by HDMI connections in computer and consumer electronics.

The ultralow line capacitance (0.6pF) of HDMIULC6-4SC6 provides a new level of performance, ST said, enabling designers to protect the high-speed HDMI against 15kV air and contact discharges, above the IEC 61000-4-2 level 4 standard, while minimizing distortion of the HDMI signal. Its ultrahigh cut-off frequency of 5.3GHz also ensures data integrity, the company said.

The device promises better impedance matching (0.015pF versus 0.04pF), low leakage current (0.5?A max), and minimal channel imbalance, signal skew and crosstalk (0.007pF versus 0.13pF). It is also compatible with other high-speed interfaces such as IEEE 1394a/b, USB2.0, Ethernet links and video lines.

The footprint of the HDMIULC6-4SC6 is compatible with the company's USBLC6-4SC6 and DVIULC6-4SC6 ESD protection devices for USB 2.0 and DVI ports respectively, allowing easy board upgrades.

Housed in SOT23-6L, the HDMIULC6-4SC6 is in full production and costs 25 cents in quantities of 2,500.

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