Abstract: An improved fall time is achieved in bipolar transistor logic circuits which have three-state outputs. The circuits comprise a logic input terminal which is coupled to a push-pull output stage to drive a three-state output terminal. A three-state input receives three-state control signals for holding the output transistors in their non-conducting, high impedance state. Improved speed is achieved by adding a feedback circuit to remove stored base charge from the upper output driver transistor and to supply base current derived from the load to the lower output driver transistor during high to low transitions of the output voltage.