CM2020-01TR Datasheet, PDF (10/12 Pages) ON Semiconductor – HDMI Transmitter Port Protection and Interface Device

CM2020-01TR
Application Information (cont’d)
Design Considerations
5V Overcurrent Output
Maximum Overcurrent Protection output drop at 55mA on 5V_OUT is 100mV. To meet HDMI output
requirements of 4.8-5.3V, an input of greater than 4.9V should be used (i.e. 5.1V ±4%). A 0.1 F ceramic bypass
capacitor on this output is also recommended.
Hotplug Detect Input
To meet the requirements of HDMI CTS TID7-12, the following pullup/pulldown configuration is recommended
for a 3.3V ±10% internal VCC rail (See Figure 4 below). A 0.1µF ceramic capacitor is recommended for
additional edge debounce and ESD bypass.
DUT On vs. DUT Off
Many HDMI CTS tests require a power off condition on the System Under Test. Many Dual Rail Clamp (DRC)
ESD diode configurations will be forward biased when their VDD rail is lower than the I/O pin bias, thereby
exhibiting extremely high apparent capacitance measurements, for example. The MediaGuard™ backdrive
isolation circuitry limits this current to <5µA, and will help ensure compliance.
Figure 4. Design Example
Rev. 4 | Page 10 of 12 | www.onsemi.com