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Five-channel voltage supervisor saves costs, board space

Posted: 16 May 2008 ?? ?Print Version ?Bookmark and Share

Keywords:voltage supervisor? five-channel device? monitoring power supply?

Catalyst Semiconductor's supervisor

Catalyst Semiconductor Inc. has expanded its voltage supervisor product line with the introduction of a five-channel device that delivers high reset threshold accuracy and very low power consumption for monitoring the power supply (Vcc) status of a microprocessor, MCU, 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. It 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 (+5V, +3.3V, +3V, +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 (greater than 0.6V) using external resistors.

The CAT885 supervisor is priced at $1.17 each in 10,000 piece quantities. Samples are available.





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