Complementary Emitter Follower Driver
Original Publication Date: 1980-Jan-01
Included in the Prior Art Database: 2005-Feb-13
With advanced devices (namely PNPs with Beta >80 and I(E) up to 20 ma) improved driver designs may be utilized. An improved driver, depicted in the drawing, includes the following features: (A) The output rise time is a function of the input and the product of Rpu and Cpu. (B) The output fall time is a function of the input and the product of Rpd and Cpd. (C) Input B provides tri-state capability. (D) Low on-chip power dissipation. (E) Low or no DC off-chip current. (F) High AC current drive (emitter follower drive in both directions).