The PWM feature allows each output to generate a variable-duty-cycle waveform, which is useful for dimming LEDs or controlling fan speed without a separate PWM controller. The interrupt output lets the host MCU sleep until an input changes, saving power in battery-operated designs. Together, these features can eliminate a dedicated PWM generator and reduce the MCU's polling overhead, simplifying firmware and lowering the component count.
The MAX7313AEG+T is supplied in a 24-pin QSOP package with a 0.154-inch body width and 3.90 mm width. The QSOP footprint is smaller than a standard SOIC-24, saving board area in dense layouts.