Overview
The LM339FVJ-E2 is a quad voltage comparator integrated circuit (IC) manufactured by Rohm Semiconductor. It is designed for general-purpose applications and is widely used in electronic circuits requiring voltage comparison functionality. The device features four independent comparators with open-collector outputs, making it versatile for various digital and analog applications. Its compact 14-TSSOP package and surface-mount design make it suitable for space-constrained applications. The LM339FVJ-E2 is particularly valued for its wide operating voltage range, low power consumption, and robust performance in industrial and consumer electronics.
Key Specifications
| Parameter | Value | Unit | Notes |
|---|---|---|---|
| Supply Voltage (Single/Dual) | 3V ~ 32V / ±1.5V ~ ±16V | V | Wide operating range |
| Input Offset Voltage | 4.5 | mV | @ 1.4V |
| Input Bias Current | 0.05 | µA | @ 1.4V |
| Output Current | 16 | mA | @ 5V |
| Quiescent Current | 2 | mA | Typical |
| Operating Temperature | -40 to 85 | °C | Industrial range |
| Package | 14-TSSOP | - | Surface mount |
| Output Type | Open Collector | - | Compatible with TTL, CMOS |
Key Features
- Four independent voltage comparators in a single package.
- Wide supply voltage range: 3V to 32V (single) or ±1.5V to ±16V (dual).
- Low input bias current of 0.05 µA ensures minimal loading on input sources.
- Open-collector outputs allow flexible interfacing with other logic families.
- Compact 14-TSSOP package for space-efficient designs.
- Industrial temperature range (-40°C to 85°C) for reliable operation in harsh environments.
Applications
The LM339FVJ-E2 is widely used in applications requiring voltage comparison, such as:
- Industrial Automation: Signal conditioning, threshold detection, and control systems.
- Consumer Electronics: Battery monitoring, level detection, and audio signal processing.
- Automotive Electronics: Sensor interfacing, fault detection, and power management.
- Power Supplies: Overvoltage/undervoltage protection and voltage regulation.
- Medical Devices: Signal comparison and monitoring in diagnostic equipment.
Q & A
1. What is the operating voltage range of the LM339FVJ-E2?
The LM339FVJ-E2 operates from 3V to 32V in single-supply mode or ±1.5V to ±16V in dual-supply mode.
2. What is the output type of the LM339FVJ-E2?
It features open-collector outputs, which allow flexible interfacing with other logic families.
3. What is the input bias current of the LM339FVJ-E2?
The input bias current is 0.05 µA at 1.4V.
4. What is the maximum output current of the LM339FVJ-E2?
The maximum output current is 16 mA at 5V.
5. What is the operating temperature range of the LM339FVJ-E2?
It operates from -40°C to 85°C, making it suitable for industrial applications.
6. What package does the LM339FVJ-E2 come in?
It is available in a 14-TSSOP surface-mount package.
7. Can the LM339FVJ-E2 be used in automotive applications?
Yes, it is suitable for automotive electronics, including sensor interfacing and fault detection.
8. What is the input offset voltage of the LM339FVJ-E2?
The input offset voltage is 4.5 mV at 1.4V.
9. Is the LM339FVJ-E2 compatible with TTL and CMOS logic?
Yes, its open-collector outputs are compatible with TTL, CMOS, and other logic families.
10. What are the typical applications of the LM339FVJ-E2?
It is used in voltage comparison, threshold detection, signal conditioning, and power management applications.
