An input that can accept 5 V without damage and without current flowing into the supply, even when the IC runs from 3.3 V or similar. It only tolerates 5 V at the input; it does not mean the IC can output a 5 V signal.
Japanese name: 5 Vトレラント
5 V tolerant appears in 1 practice question across 1 topic, including How to read datasheets.
Field: How to read datasheets
Answer: C. Even when the device runs from a supply such as 3.3 V, a 5 V signal may be applied to that input
A normal CMOS input has an ESD protection diode to the supply (VDD), and if the input exceeds about VDD + 0.3 V, the diode conducts and current flows in. A 5 V tolerant input is designed without this path, so applying 5 V while the supply is 3.3 V causes neither damage nor current inflow. It only tolerates the input; it does not mean the output reaches 5 V. Whether 5 V may also be applied while the supply is off must be checked in a separate statement.
A 5 V tolerant input is designed without this path, so applying 5 V while the supply is 3.3 V causes neither damage nor current inflow.
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