CA339E Low Power Quad Voltage Comparator IC (DIP-14)

The CA339E is a high-performance quad voltage comparator designed for a wide variety of industrial, commercial, and military applications. It features four independent comparators that are specifically engineered to operate from a single power supply over a broad range of voltages, though split-supply operation is also supported. One of its most significant advantages is that the input common-mode voltage range includes ground, enabling the device to sense signals near the negative rail even when using a single supply. The CA339E utilizes open-collector outputs, which allows for wired-AND logic connections and simplifies interfacing with different voltage levels. This versatile IC is commonly used in level detectors, square wave generators, pulse generators, and analog-to-digital converters, making it a staple component for signal processing and automation systems.

Key Features:

Flexible operation from a single supply (2V to 36V) or dual supplies (plus or minus 1V to 18V).

Input common-mode voltage range includes ground, allowing direct sensing at 0V.

Low power consumption with a typical supply current drain of only 0.8mA.

Compatible with a wide range of logic families including TTL, DTL, ECL, MOS, and CMOS.

Capable of driving lamps or relays and switching voltages up to 36V.