MPU SUPERVISOR QUAD 5.5V TQFN-20
The MAX16008/MAX16009 are adjustable quad window voltage detectors in a small thin QFN package. These devices are designed to provide a higher level of sys- tem reliability by monitoring multiple supply voltages and providing a fault signal when any of the voltages exceed their overvoltage thresholds or fall below their undervoltage thresholds. These devices offer user-adjustable thresholds that allow voltages to be monitored down to 0.4V. These devices allow the upper and lower trip thresholds of each window detector to be set externally with the use of three external resistors. Each monitored threshold has an independent open- drain output for signaling a fault condition. The outputs can be wire OR’ed together to provide a single fault output. The open-drain outputs are internally pulled up with a 30µA current, but can be externally driven to other voltage levels for interfacing to other logic levels. Both devices feature a margin input to disable the out- puts during margin testing or any other time after power-up operations. The MAX16009 offers a reset out- put that deasserts after a reset timeout period after all voltages are within their threshold specifications. The reset timeout is internally set to 140ms (min), but can be externally adjusted to other reset timeouts using an external capacitor. In addition, the MAX16009 offers a manual reset input. All devices are offered in a 4mm x 4mm TQFN package and are fully specified from -40°C to +125°C.