Totem pole output what is1/16/2024 The current from VCC will flow across the base resistor RB. The base-emitter voltage is less and the base-collector voltage, VBE, will be more than zero. When the input voltage is high, then transistor T1 will be in the reverse active region. Let us first consider the working of the basic TTL gate. The circuit of the basic Transistor-Transistor Logic (TTL) gate is shown in the figure below. Working of Transistor-Transistor Logic (TTL) It is also known as T 2L family and was introduced by Texas Instruments in 1964. Transistor-Transistor Logic is the most popular and widely used IC logic family. The NAND gate is the basic building block of this logic family. It is a logic family implemented with bipolar process technology that combines or integrates NPN transistors, PN junction diodes, and diffused resistors in a single monolithic structure to get the desired logic function. TTL as outlined above stands for Transistor-Transistor Logic. Totem Pole Transistor-Transistor Logic (TTL):. Disadvantage of Single Output Stage TTL:.
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