The MC34161/MC33161 is a universal voltage monitor intended for use in a wide variety of voltage sensing applications. These devices offer the circuit designer an economical solution for positive and negative voltage detection. The circuit consists of two comparator channels each with hysteresis, a unique Mode Select Input for channel programming, a pinned out 2.54 V reference, and two open collector outputs capable of sinking in excess of 10mA. Each comparator channel can be configured as either inverting or noninverting by the Mode Select Input. This allows over, under, and window detection of positive and negative voltages. The minimum supply voltage needed for these devices to be fully functional is 2.0 V for positive voltage sensing and 4.0V for negative voltage sensing. Applications include direct monitoring of positive and negative voltages used in appliance, automotive, consumer, and industrial equipment.
The MC34161, MC33161 and NCV33161 are universal voltage monitor ICs that provide positive and negative voltage detection with two comparator channels, a mode‑select input, a 2.54 V reference and open‑collector outputs. They are designed for a wide range of applications such as appliance, automotive, consumer and industrial equipment.
The devices operate from a minimum supply of 2.0 V for positive sensing and 4.0 V for negative sensing, support over‑, under‑ and window‑voltage detection, and are offered in PDIP‑8 and SOIC‑8 packages, including Pb‑free options. Detailed electrical characteristics, maximum ratings, functional description and ordering information are provided.
| Reference Voltage | 2.54 V |
|---|---|
| Operating Junction Temperature | +150 °C |
The device is fully functional at a supply voltage of 2.0 V for positive voltage sensing.
The device provides a pinned‑out reference voltage of 2.54 V.