ZHCSHZ3C April 2018 – August 2019 TMUX1072
PRODUCTION DATA.
8.3.4 Overvoltage Protection
The OVP of the TMUX1072 is designed to protect the system from overvoltage conditions up to 18 V on the COM1 and COM2 pins. This protection is valid even if Vcc = 0V. Figure 15 depicts an event where up to 18 V could appear on COM1 and COM2 that could pass through the device and damage components behind the device.
Figure 15. Existing Solution Being Damaged by a Short, 18 V The TMUX1072 opens the switches and protect the rest of the system by blocking the 18 V as depicted in Figure 16.
Figure 16. Protecting During a 18-V Short Figure 17 is a waveform showing the voltage on the pins during an overvoltage scenario.
