MC34064/D is a low voltage 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.
This document describes the MC34064 family of undervoltage sensing circuits, intended for use as reset controllers in micro‑processor based systems. It highlights features such as a trimmed‑in‑package band‑gap reference, precise comparator thresholds with built‑in hysteresis, and an open‑collector reset output capable of sinking over 10 mA.
Technical data include electrical characteristics, maximum ratings, package dimensions, ordering information, and device marking details for the available TO‑92, TSOP‑5, SOIC‑8 and Micro8 packages. The datasheet also provides typical application notes for appliance, automotive, consumer and industrial equipment.
| Comparator Threshold Voltage | 4.6 V (typical at 25 °C) |
|---|---|
| Reset Output Sink Current | >10 mA |
| Operating Input Voltage Range | 1.0 V to 6.5 V (typical) |
| Operating Temperature Range (NCV) | -40 °C to +125 °C |
The typical comparator threshold voltage is 4.6 V at 25 °C.
The reset output can sink more than 10 mA.
Available packages include 3‑pin TO‑92, micro‑size TSOP‑5, 8‑pin SOIC‑8, and Micro8/C0116 surface‑mount packages.
The device operates with an input voltage from 1.0 V up to 6.5 V (typical) and is rated up to 10 V.