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Learn how to use the totem pole configuration, a common output driver circuit that converts voltage levels and drives MOSFET gates. See the circuit diagram, video lecture, and applications of this versatile circuit design choice.
Circuit of TTL NAND gate has a 'totem pole output' stage (right) consisting of two NPN transistors in push pull. When at least one of the inputs is low, transistor V 1 is turned on, V 2 is turned off, V 3 is turned on and V 4 off, pulling output voltage high.
A Totem Pole output is a TTL device that can sink or source less current than a Push-Pull output. Learn the difference between the two types of outputs and how they are used in encoders and other devices.
Mar 26, 2023 · \$\begingroup\$ A Totem-Pole output is often used for logic gates and some op-amps because it allows the output to approach ground potential, or zero volts. The Push-Pull output cannot approach either power rail due to a Vbe drop of .6 to 1.2 volts.
A totem pole is a standard CMOS output structure where a P-channel MOSFET is connected in series with an N-Channel MOSFET and the connection point between the two is the output. The P-FET sits on top.
Oct 12, 2022 · Transistor Q 3 and Q 4 form the output side, called Totem pole output. The circuit of a 2-input TTL NAND gate may look complex. We can simplify its operation by considering the diode equivalent of the 2-input NPN transistor, as shown in the below figure.
Learn about the performance metrics, analysis and design of output stages using MOSFETs and BJTs. Compare different load types, such as linear resistors, current sources and active loads, and specialty pairings, such as push-pull or totem pole.
