The MC34064 is an undervoltage sensing circuit specifically designed for use as a reset controller in microprocessor-based systems. It offers the designer an economical solution for low voltage detection with a single external resistor. The MC34064 features a trimmed-in-package bandgap reference, and a comparator with precise thresholds and built-in hysteresis to prevent erratic reset operation. The open collector reset output is capable of sinking in excess of 10 mA, and operation is guaranteed down to 1.0 V input with low standby current. These devices are packaged in 3-pin TO-226AA, 8-pin SO–8 and Micro–8 surface mount packages. Applications include direct monitoring of the 5.0 V MPU/logic power supply used in appliance, automotive, consumer and industrial equipment.
The MC34064 and MC33064 are undervoltage sensing circuits designed specifically for use as reset controllers in microprocessor-based systems. These devices feature a trimmed-in-package bandgap reference and a comparator with precise thresholds and built-in hysteresis to prevent erratic reset operation. The open collector reset output is capable of sinking in excess of 10 mA, and operation is guaranteed down to 1.0 V input with low standby current.
| Comparator Threshold Voltage (Typical) | 4.6 V |
|---|---|
| Reset Output Sink Current | Excess of 10 mA |
| Guaranteed Reset Operation Input | 1.0 V |
| Operating Junction Temperature | +150 °C |
| Operating Ambient Temperature (MC34064) | 0° to +70°C |
| Operating Ambient Temperature (MC33064) | -40° to +85°C |
It is specifically designed for use as a reset controller in microprocessor-based systems.
The comparator threshold is 4.6 V at 25°C.
They are available in 3-pin TO-226AA, 8-pin SO-8, and Micro-8 surface mount packages.