Overview
The LM339FJ-E2 is a high-performance quad differential comparator manufactured by Rohm Semiconductor. Designed for precision and reliability, this component is widely used in applications requiring voltage comparison, such as power management, signal conditioning, and control systems. The LM339FJ-E2 is positioned as a cost-effective solution for industrial, automotive, and consumer electronics, offering robust performance in harsh environments. Its unique selling points include low power consumption, wide operating voltage range, and compatibility with both single and dual power supplies.
Key Specifications
| Parameter | Value | Unit | Notes |
|---|---|---|---|
| Number of Channels | 4 | - | Quad comparator |
| Supply Voltage Range | 2 to 36 | V | Single or dual supply |
| Input Offset Voltage | ±2 | mV | Max |
| Input Bias Current | 25 | nA | Max |
| Response Time | 1.3 | µs | Typical |
| Operating Temperature Range | -40 to +105 | °C | Industrial grade |
| Package Type | SOIC-14 | - | Surface mount |
| Output Type | Open Collector | - | Compatible with TTL and CMOS |
Key Features
- Quad Differential Comparator: Four independent comparators in a single package for space-saving designs.
- Wide Supply Voltage Range: Operates from 2V to 36V, making it versatile for various applications.
- Low Power Consumption: Ideal for battery-powered and energy-efficient systems.
- Open Collector Outputs: Allows flexible interfacing with other logic levels, such as TTL and CMOS.
- Industrial Temperature Range: Reliable performance in extreme environments.
Applications
The LM339FJ-E2 is extensively used in industrial automation for signal conditioning and threshold detection. In automotive electronics, it is employed in battery management systems and sensor interfaces. For consumer electronics, it is ideal for power monitoring and control circuits. Additionally, its precision and reliability make it suitable for medical devices and test and measurement equipment.
Q & A
1. What is the operating voltage range of the LM339FJ-E2?
The LM339FJ-E2 operates from 2V to 36V, supporting both single and dual power supplies.
2. How many comparators are included in the LM339FJ-E2?
It includes four independent comparators in a single package.
3. What is the typical response time of the LM339FJ-E2?
The typical response time is 1.3 microseconds.
4. Can the LM339FJ-E2 operate in harsh environments?
Yes, it has an industrial temperature range of -40°C to +105°C.
5. What type of output does the LM339FJ-E2 have?
It features open collector outputs, compatible with TTL and CMOS logic levels.
6. Is the LM339FJ-E2 suitable for battery-powered applications?
Yes, its low power consumption makes it ideal for battery-powered systems.
7. What is the maximum input offset voltage?
The maximum input offset voltage is ±2 mV.
8. What package type is the LM339FJ-E2 available in?
It is available in an SOIC-14 surface mount package.
9. Can the LM339FJ-E2 be used in automotive applications?
Yes, it is suitable for automotive electronics, such as battery management systems.
10. What are the key advantages of the LM339FJ-E2?
Its key advantages include wide voltage range, low power consumption, and robust performance in harsh environments.
