Other Parts Discussed in Thread: TPS2388, ISO7341FC
I am designing my circuit with ISO7241C. I want pass OSS signal from external MCU to TPS2388 device and the OSS pin is internally pulled down to GND. When I use ISO7241 to pass this signal, I found that if I left the INB open(without pull up or pull down resistor), the INB is high. Is the internal circuit of ISO7241 make that pin high? If I want the default status of OSS is low without any MCU controlled, should I add a pull down resistor? Thanks.