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A Push-Pull output consists of a pair of complementary
MOSFETs. The principle is the following:
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Reset output goes high when T2 turns on and T1 turns
off. |
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Similarly, Reset output goes low when T2 turns off
and T1 turns on. |
ADVANTAGES:
| • |
Fast rise time |
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No current drained at High and Low states. Current
is drained only during a switch between the 2 states. |
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Almost rail-to-rail response, both from Low-to-High
and High-to-Low. |
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The Open Drain structure has only one MOSFET, which is
normally turned Off.
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Reset output is pulled to high level by an external
resistor. |
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In the event that Vcc drops below Vref, the transistor
will be turned on for a minimum of time (trec). |
ADVANTAGE:
| • |
Wired-OR capability. Several resets can be connected
in parallel. |
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