Compare electronics parts

Two independent H-bridges — 2 DC motors, or 1 bipolar stepper wired across both.

Most modules recommend at least ~5-7V on the motor supply so the onboard 5V logic regulator (if its jumper is fitted) has enough headroom to work — check your specific board's silkscreen/jumper setup.

The bare L298 IC is rated to 46V absolute max, but breakout modules' screw terminals and trace widths commonly derate this to around 35V in practice — treat the silkscreen number, not the bare-chip datasheet max, as the real ceiling for your board.

Threshold is only the onset of conduction, not a fully-on gate voltage. Use the RDS(on) test conditions to choose gate drive.

This is the number the module's silkscreen advertises, and it assumes real heatsinking — the datasheet's saturation-voltage numbers mean 2A per channel is genuinely dissipating watts inside the package (see description).

Non-repetitive peak, datasheet-rated — a brief startup surge, not a sustainable current.

Still just 0.025Ω at Vgs=5V and 0.035Ω at Vgs=4V — this is what 'logic level' buys you: it stays low-resistance without a full 10V gate drive, unlike the IRF540N.

Drops off sharply with case temperature — don't expect anywhere near 47A without a heatsink and good PCB copper.

This is the LOGIC-side supply range (Vss in the datasheet), not the motor supply — see motorVoltageMin/Max for that.

IN1-IN4 are direction (digital), ENA/ENB are speed/enable (PWM) — some modules jumper ENA/ENB permanently HIGH instead of breaking them out, which removes speed control unless the jumper is cut.

The bare IC exposes current-sense pins (via external sense resistors), but many cheap breakout modules don't populate the sense resistors or break the pins out at all — check your specific board.