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Adjustable five-channel power supply supervisor

Catalyst Semiconductor has added a five-channel device to its supervisor product line that claims high reset threshold accuracy and low power consumption when monitoring the power supply status of a microprocessor, microcontroller, ASIC or other system processor.
The CAT885 can monitor up to five system voltages by maintaining a reset output active until all the power supply voltages exceed the specified trip values. The device then maintains the reset output in an active condition until the internal timer times out, allowing the system power supplies to stabilise. Two of the five voltage detectors are factory set for standard supplies (+5.0V, +3.3V, +3.0V, +2.5V or +1.8V), while the threshold voltages of the third, fourth, and fifth voltage monitors can be adjusted to meet specific system design requirements (> 0.6V) using external resistors.
The device, which has been integrated into an 8-lead MSOP package, features an open-drain output, active-low function with manual reset, and monitoring functions to suit a range of electronic products.

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