Off-line driving device with adjustable slew rate and resistance

The invention discloses an off-line driving device with an adjustable slew rate and resistance. The off-line driving device includes a driving circuit and a front driving circuit. The driving circuit includes a pull-up system, a pull-down system and a variable resistor. The front driving circuit is connected with the driving circuit. The front driving circuit includes a pull-up front driver and a pull-down front driver. Resistor strings capable of realizing switch-on and switch-off are connected in parallel between output ends of the pull-up front driver and output ends of the pull-down front driver. In the off-line driving device with the adjustable slew rate and resistance, the variable resistor is arranged in the driving circuit and the pull-up resistor strings and pull-down resistor strings capable of realizing switch-on and switch-off are arranged in the front driving circuit. Through combination of resistors of the front driving circuit and the driving circuit, a function of adjustability of the slew ra