Difference between push-pull output and open-drain output

push-Pull output: can output high, low level, connect digital devices , low drive capacity. Push-pull structure is generally referred to as two transistors by two complementary signal control, always in one transistor on the time of the other cutoff . This structure generally does not require pull-up and pull-down resistors.

open-Drain output : The output is equivalent to the collector of the transistor. To get high-level status External Circuit Connection pull-up resistor. Suitable for current-type drive, its ability to absorb current is relatively strong . The resistance of the pull-up resistor determines the speed at which the logic level transitions along. The higher the resistance, the lower the power consumption.

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Difference between push-pull output and open-drain output