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What are the difference between open collector output and totem pole out put?
Wiki User
∙ 15y ago
Totem-pole output: two transistors with opposite drive :
- if T1 is open, T2 is closed >> so the output is Vcc or logical 1
- if T1 is closed, T2 is open >> so the output is GND or logical 0
Vcc
|
T1
|
-----output
|
T2
|
GND
Open collector output: the output with one transistor, whom collector is on Vcc through a R resistor.
Wiki User
∙ 15y ago
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Why totem pole output is called so?
DUe to the transistors being stacked vertically and a diode being in between to connect them
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