Overview
The LM339S, produced by onsemi, is a quad differential comparator integrated circuit designed for a wide range of applications. It features four independent voltage comparators, each capable of operating from a single power supply or dual supplies. This flexibility makes the LM339S versatile for use in various electronic systems, from consumer electronics to industrial and automotive applications. The device is known for its reliability, precision, and low power consumption, making it a popular choice for engineers and designers.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Power Supply Voltage | 2 to 36 Vdc or ±1 to ±18 Vdc | Vdc |
| Input Differential Voltage Range | 36 Vdc | Vdc |
| Input Common Mode Voltage Range | 0 to VCC - 1.5 Vdc | Vdc |
| Input Offset Voltage | ±2.0 to ±5.0 mVdc | mVdc |
| Input Bias Current | 25 nA (Typ), 250 nA (Max) | nA |
| Input Offset Current | ±5.0 nA (Typ) | nA |
| Output Saturation Voltage | 130 mV (Typ) @ 4.0 mA | mV |
| Output Leakage Current | 0.1 nA (Typ) | nA |
| Operating Ambient Temperature Range | 0°C to +70°C | °C |
| Storage Temperature Range | -65°C to +150°C | °C |
| Response Time | 1.3 µsec (Typ) | µsec |
| Package Type | 14-DIP | |
| Number of Pins | 14 |
Key Features
- Single or Split Supply Operation: The LM339S can operate with a single power supply from 2 to 36 volts or dual supplies from ±1 to ±18 volts.
- Low Input Bias Current: Typically 25 nA, making it energy-efficient and suitable for battery-powered devices.
- Low Input Offset Voltage and Current: Ensures high accuracy in voltage comparisons.
- Low Output Saturation Voltage: 130 mV at 4 mA, providing stable and consistent output performance.
- TTL and CMOS Compatibility: Compatible with TTL, MOS, and CMOS logic circuits.
- ESD Protection: Includes ESD clamps on the inputs to protect against static discharge.
- RoHS Compliant: Lead-free, halogen-free, and RoHS compliant, ensuring environmental safety.
- Independent Comparators: Four independent voltage comparators that can be used in separate circuits without interference.
Applications
- Level Detection and Low-Level Sensing: Ideal for detecting voltage levels in various electronic systems.
- Memory Applications: Used in memory circuits for voltage comparison and detection.
- Oscillators and Waveform Generation: Can be used to build oscillators and generate specific frequency signals.
- Peak Detection: Helps identify the maximum voltage levels in a signal, useful in audio systems and waveform analysis.
- Power Supervision: Monitors voltage levels and signals when the power supply is too high or too low.
- Industrial Control and Measurement Systems: Used in various control and measurement systems due to its precision and flexibility.
- Automotive Safety and Control Systems: Used in battery monitoring and sensor processing in the automotive industry.
- Testing Equipment and Diagnostic Tools: Used in measurement devices to analyze and process electrical signals accurately.
Q & A
- What is the operating voltage range of the LM339S?
The LM339S can operate with a single power supply from 2 to 36 volts or dual supplies from ±1 to ±18 volts.
- What is the typical input bias current of the LM339S?
The typical input bias current is 25 nA.
- What is the output saturation voltage of the LM339S?
The output saturation voltage is typically 130 mV at 4 mA.
- Is the LM339S compatible with TTL and CMOS logic circuits?
Yes, the LM339S is compatible with TTL, MOS, and CMOS logic circuits.
- Does the LM339S have ESD protection?
Yes, the LM339S includes ESD clamps on the inputs to protect against static discharge.
- What is the operating temperature range of the LM339S?
The operating ambient temperature range is from 0°C to +70°C.
- How many independent comparators does the LM339S have?
The LM339S has four independent voltage comparators.
- What is the response time of the LM339S?
The response time is typically 1.3 µsec.
- Is the LM339S RoHS compliant?
Yes, the LM339S is lead-free, halogen-free, and RoHS compliant.
- What are some common applications of the LM339S?
The LM339S is used in level detection, low-level sensing, oscillators, peak detection, power supervision, industrial control, and automotive safety systems.
