Assuming you asked just a single transistor, the answer is no because a tri-state buffer needs two inputs: a control valve and x which is zero or one. The transistor base can switch the the emitter to collector on or off only to control Hi-Z. But there is no buffer to hold the state of zero or one! Read this to help What's a Tri-state Buffer? What to add is a buffer on the emitter before the transistor control gate for a tri-state buffer.
Assuming you asked just a single transistor, the answer is no because a tri-state buffer needs two inputs: a control valve and x which is zero or one. The transistor base can switch the the emitter to collector on or off only to control Hi-Z. But there is no buffer to hold the state of zero or one! Read this to help What's a Tri-state Buffer? What to add is a buffer on the emitter before the transistor control gate for a tri-state buffer.
