Fast limited swing push-pull driver

A push-pull driver including means for providing a source of potential with first and second driver transistors connected in series with said source of potential with the emitter of said first transistor connected to the collector of said second transistor at the output node, a differential pair predriver including a third and fourth transistor coupled together at the emitters to a current source, said collector of said third transistor coupled to the base of said first transistor and a first load resistor and the collector of said fourth transistor coupled to a second load resistor and through an emitter follower to the base of said second transistor, the input driver signal applied to the base of one or differentially to both of said third and fourth transistors, the improvement for decreasing the switching times of said driver and lower the power dissipation comprising means for providing a fixed voltage smaller than said source of potential to said first and second load resistors. wherein said means for providing said fixed voltage includes a third resistance connected at a node between said means for providing said source of potential and said first and second load resistors and a clamping means connected between said first and second load resistors and a reference potential whereby the up-level is clamped and said voltage swing across said load registers is safely limited saving power and providing faster swing time.