Hence it is known as fastest logic family. ➨It has average propagation delay time ( 1 to 4 ns ) better compare to both TTL and CMOS. What is advantage of ECL over others?įollowing points summarize ECL advantages over TTL and CMOS: ➨It has fanout of 25 which is better than TTL and less then CMOS. What is totem pole? Totem pole basically an output driver circuit use to convert one level of voltage into another level of voltage. It signifies the person who rises above the petty details of daily life to take in the big picture. It protects the spirit and the body, representing health and wholeness of being. The majestic Eagle is strength and vision. The best examples of TTL are logic gates namely the 7402 NOR Gate & the 7400 NAND gate. As the name suggests, the transistor performs two functions like logic as well as amplifying. Neither low power dissipation nor high speed What is Transistor-Transistor Logic (TTL) The Transistor-Transistor Logic (TTL) is a logic family made up of BJTs (bipolar junction transistors). A.īoth low power dissipation and high speed What is the major advantage of ECL logic?Ī major advantage of ECL logic over TTL and CMOS is _….Exercise :: Logic Gates – Filling the Blanks. Output stage of Open collector consists of only pull down transistor. Output stage of totem pole circuit consists of pull-up transistor, diode resistor and a pull down transistor. Logic operation is the same as the open collector output. Totem Pole Output Totem Pole means the addition of an active pull up the circuit in the output of the Gate which results in a reduction of propagation delay.
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