Five-channel supervisor saves system costs

Edited by the Electronicstalk editorial team May 15, 2008

Monitors up to five system voltages by maintaining a reset output active until all the power supply voltages exceed the specified trip values.

Catalyst Semiconductor has added a new five-channel device to its supervisor product line that gives designers high reset threshold accuracy and very low power consumption for monitoring the power-supply status of any system processor.

The new CAT885 reduces system costs and saves board space by integrating five channels into a single, small MSOP 8-lead package.

The device features an open-drain output, active-low function with manual reset to perform comprehensive system reset and monitoring functions for a wide range of electronic products.

The CAT885 monitors 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, which allows the system power supplies to stabilise.

Two of the five voltage detectors are factory set for standard supplies (+5.0, +3.3, +3.0, +2.5 or +1.8V), and the threshold voltages of the third, fourth and fifth voltage monitors can be adjusted for specific system design requirements (0.6V minimum) using external resistors.

The CAT885 supervisor is priced at US $1.17 each in 10,000-piece quantities.

Samples are available now, and projected lead time for production quantities is currently 6 to 8 weeks ARO.