[FAQ] What are the recommended logic HIGH and LOW input voltage levels that can be applied to the isolated I2C devices, ISO1540 and ISO1541?

Anthony Viviano

Other Parts Discussed in Thread: ISO1541, ISO1540

What are the recommended logic HIGH and LOW input voltage levels that can be applied to the isolated I2C devices, ISO1540 and ISO1541?

over 5 years ago

0 Anthony Viviano over 5 years ago

TI__Prodigy 460 points

The recommended logic input voltage levels for ISO1540 and ISO1541 devices for Side1 & Side2 inputs are as shown below.

V_IL1 < 0.5V	V_IH1 > 0.7*VCC1
V_IL2 < 0.3*VCC2	V_IH2 > 0.7*VCC2

These input voltage levels apply to both the I2C data and clock signals. For more information please refer to the Recommended Operating Section of the ISO154x datasheet.

Isolation

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[FAQ] What are the recommended logic HIGH and LOW input voltage levels that can be applied to the isolated I2C devices, ISO1540 and ISO1541?