Totem-pole output, also known as a push-pull output, is a type of electronic circuit and usually realized as a complementary pair of transistors. The High and Low level of the output are determined. The output of high level is 10 V max, low level is 0.5 V min.

In output circuit of the RP-1700 series, thermistor with which resistance is set to 22Ω at 25℃ is used as the output resistance R0 (see the following figure).