CAT853, CAT859, CAT863, CAT869 3-Pin Microprocessor Power Supply Supervisors Description The CAT853, CAT863, CAT859, and CAT869 are supervisory circuits that monitor power supplies in digital systems.
These devices generate a reset signal, which is asserted while the power supply voltage is below a preset threshold level and for at least 140 ms after the power supply level has risen above that level.
Industry standard threshold levels are offered to support +3.
3 V or 5.
0 V systems.
The CAT859 and CAT869 feature a RESET push−pull output (active low) for the two pinout options.
The CAT853 and CAT863 feature an open drain RESET output (active low).
Both require a pull−up resistor on the RESET...

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