ASM1834A/D
Reset Output Signal
Reset output signals are valid as long as either voltage at
5VIN or 3.3VIN is above 1.2V. In addition, the ASM1834
has push-pull outputs that can remain valid below a 1.2V
input level. To sink current below 1.2V, a resistor should
be connected from the RESET output to ground. This
resistor guarantees a valid reset signal down to 0V. A
100kΩ value is suggested.
most applications and a value of 10kΩ is suggested.
(See Figures 5 and 6.)
The ASM1834A open drain reset outputs can be
connected to the same potential through a single pull-up
resistor. In this configuration a failure on either supply will
generate an active LOW reset. If the inputs are pulled-up
to different voltages, the reset outputs (pin 2 and pin 7)
cannot be connected to form a wired “AND” (see Figure
7).
The AS1834A open drain reset outputs require pull-up
resistors and must be low enough in value to pull the
output into a HIGH state. Resistor value is not critical in
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