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Driving SHDN pin on LTC4367 with 3.3V logic gate

Thread Summary

The user asked if the SHDN pin on the LTC4367 can be driven by a 3.3V CMOS gate, given the 10mA max current capability of the CMOS gate and the 1mA max current requirement of the SHDN pin. The final answer confirms that this setup should work, as the SHDN pin will only draw a few nA, well within the 10mA capability of the CMOS gate.

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Category: Hardware
Product Number: LTC4367

Can SHDN pin on LTC4367 be driven from the output of 3.3V CMOS gate?

Voltage levels are within specification.

There is a concern about maximum current (3.3V CMOS gate can source/sink 10mA). 

Datasheet for LTC4367 specifies max. 1mA for SHDN pin. However, internal structure (datasheet, pg.8, block diagram) of LTC4367 shows only input to inverter, no diode or typical statement like "...absolute voltage level can be exceeded if current is below xx mA...".

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