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 document describes the MC34064, MC33064, and NCV33064 devices, which are undervoltage sensing circuits specifically designed to function as reset controllers in microprocessor-based systems. These components offer an economical solution for low voltage detection using a single external resistor.
| Comparator Threshold Voltage (Typical) | 4.6 V at 25°C |
|---|---|
| Reset Output Sink Current | Excess of 10 mA |
| Minimum Guaranteed Input Voltage | 1.0 V |
| Operating Junction Temperature (MC34064) | +70°C |
| Operating Ambient Temperature Range (NCV33064) | -40 to +125 °C |
It is specifically designed for use as a reset controller in microprocessor-based systems.
The circuit offers an economical solution using just a single external resistor.