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The H-bridge module uses TTL compatible logic, but the chip allows these values (based on the L298N data sheet):

Symbol Parameter Min. Max.
ViL Input Low Voltage (pin 5, 7, 10, and 12) -0.3 V 1.5 V
ViH Input High Voltage (pin 5, 7, 10, and 12) 2.3 V VSS

Am I correct to assume that I do not need to step-up the logic signal (from 3.3 V to 5 V) for this to work, but can I connect straight to the input?

Schematic in mind:

Enter image description here

Peter Mortensen
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MeSo2
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1 Answers1

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Am I correct to assume that I do not need to step-up the logic signal (from 3.3V to 5V) for this to work, but can connect straight to the input?

You are correct. The input has to be above 2.3V to register as HIGH and below 1.5V to register as LOW. You have 3.3V for HIGH and near 0V for LOW, which fits those criteria perfectly.

Majenko
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