The LM139A series consists of four independent precision voltage comparators with an offset voltage specification as low as 2 mV max for all four comparators. These were designed specifically to operate from a single power supply over a wide range of voltages. However, operation from dual supplies is also possible and the power drain is independent of the magnitude of the power supply voltage.
Key Features
- Wide Single Supply Voltage Range: 2V to 36V or dual supplies (±1V to ±18V).
- Very Low Supply Current Drain: Independent of supply voltage (0.8 mA typical).
- Low Input Biasing Current: 25 nA typical.
- Low Input Offset Current: ±5 nA typical.
- Offset Voltage: ±3 mV typical.
- Input Common-Mode Voltage Range: Includes ground.
- Differential Input Voltage Range: Equal to the supply voltage.
- Low Output Saturation Voltage: Output compatible with TTL, DTL, ECL, MOS, and CMOS logic systems.
Applications
The LM139A series is designed for use in level detection, low-level sensing and memory applications in consumer, automotive, and industrial electronic applications. It is particularly useful in complex systems where a stable, reliable comparator is necessary to maintain precise voltage thresholds.
Product Specifications
The LM139A comparators are characterized for operation from -55°C to 125°C. The LM139A series is offered in a 14-pin plastic DIP, a 14-pin metal can, and a 14-pin small outline package. The pin configuration and package are designed to be compatible with a wide range of standard devices.
Quality and Reliability
STMicroelectronics is committed to providing industry-leading quality and reliability in all its products. The LM139A series is rigorously tested and compliant with ST's standards for comparator devices, ensuring both consistent performance and reliability for critical control applications.
For detailed product information and datasheets, visit the STMicroelectronics website or contact your local ST sales office.
