Totem Pole Logic
Original Publication Date: 1978-Feb-01
Included in the Prior Art Database: 2005-Feb-20
The totem-pole logic (TPL) circuit (Fig. 2) is an extension of the Schottky transistor logic (STL) circuit (Fig. 1). The collector resistor in the STL circuit limits the circuits turn-off speed, and makes a significant contribution to the overall power dissipation of the circuit. The TPL circuit replaces this resistor with a switched PNP transistor to remove the resistor's limitations.