Five-Channel Voltage Supervisor from Catalyst Semiconductor

Catalyst Semiconductor has expanded its supervisor product line with the addition of a five-channel device that gives designers high reset threshold accuracy and low power consumption for monitoring the power supply (Vcc) status of a microprocessor, microcontroller, ASIC or other system processor. The CAT885 lowers 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 stabilize. 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 for specific system design requirements (> 0.6V) using external resistors. The CAT885 supervisor is priced at $1.17 each in 10,000 piece quantities. Samples are available now. Projected lead-time for production quantities is currently 6 to 8 weeks ARO.