The MC34164 series is an undervoltage sensing circuit specifically designed for use as reset controllers in portable microprocessor-based systems where extended battery life is required. These devices offer the designer an economical solution for low voltage detection with a single external resistor. The MC34164 series features a bandgap reference, a comparator with precise thresholds and built-in hysteresis to prevent erratic reset operation, an open collector reset output capable of sinking in excess of 6.0 mA, and guaranteed operation down to 1.0 V input with extremely low standby current. The MC devices are packaged in 3-pin TO-226AA, micro size TSOP-5, 8-pin SOIC-8, and Micro8™ surface mount packages. The NCV device is packaged in SOIC-8. Applications include direct monitoring of the 3.0 V or 5.0 V MPU/logic power supply used in appliance, automotive, consumer, and industrial equipment.
The MC34164 series are micropower undervoltage sensing circuits intended for reset control in portable micro‑processor systems where extended battery life is required. They feature a bandgap reference, precise comparator thresholds, built‑in hysteresis, and an open‑collector reset output capable of sinking over 6 mA.
The devices are offered in multiple surface‑mount packages (3‑pin TO‑226AA, TSOP‑5, SOIC‑8, Micro‑8) and include detailed maximum ratings, electrical characteristics, ordering information, and package dimensions for designers and manufacturers.
| Input Supply Voltage Range | 1.0 V to 12 V |
|---|---|
| Standby Current | as low as 9.0 µA |
| Reset Output Sink Current | 6.0 mA (typical) |
| Maximum Power Dissipation | 700 mW @ 25 °C |
| Operating Temperature Range | 0 °C to +70 °C (MC34164 series) |
| Available Packages | 3‑pin TO‑226AA, TSOP‑5, SOIC‑8, Micro‑8 |
The input voltage range is 1.0 V to 12 V.
Standby current can be as low as 9.0 µA.
The reset output can sink more than 6.0 mA.
They are available in 3‑pin TO‑226AA, TSOP‑5, SOIC‑8 and Micro‑8 surface‑mount packages.