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. The MC devices are packaged in 3-pin TO-92, micro size TSOP-5, 8-pin SOIC-8 and Micro8 surface mount packages. The NCV device is packaged in SOIC-8 and TO-92. Applications include direct monitoring of the 5.0 V MPU/logic power supply used in appliance, automotive, consumer and industrial equipment.
The MC34064, MC33064, and NCV33064 are undervoltage sensing circuits specifically designed for use as reset controllers in microprocessor-based systems. They offer an economical solution for low voltage detection using a single external resistor and feature a trimmed-in-package bandgap reference 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 a 1.0 V input with low standby current.
| Comparator Threshold Voltage (High State) | 4.6 V |
|---|---|
| Reset Output Sink Current | 10 mA minimum |
| Guaranteed Reset Operation Input Voltage | 1.0 V |
| Operating Input Voltage Range | 1.0 to 6.5 V |
| Operating Junction Temperature (MC34064) | +150 °C |
| Package Types | TO-92, TSOP-5, SOIC-8, Micro8 |
The comparator threshold voltage is 4.6 V at 25 °C.
The device guarantees reset operation with a 1.0 V input.