Overview
The LM239DRG4, produced by Texas Instruments, is a quad differential comparator integrated circuit. This device is part of the LMx39x family, which includes several variants characterized by different operating temperature ranges. The LM239 is specifically designed to operate from a single power supply over a wide range of voltages (2 V to 36 V) and can also operate with dual supplies (±1 V to ±18 V). It is known for its low supply-current drain, low input bias and offset currents, and compatibility with TTL, MOS, and CMOS outputs.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage (Single) | 2 V to 36 V | V |
| Supply Voltage (Dual) | ±1 V to ±18 V | V |
| Supply Current | 0.8 mA (Typical) | mA |
| Input Bias Current | 25 nA (Typical) | nA |
| Input Offset Current | 3 nA (Typical) | nA |
| Input Offset Voltage | 2 mV (Typical) | mV |
| Common-Mode Input Voltage Range | 0 to VCC - 1.5 V | V |
| Differential Input Voltage Range | ±36 V | V |
| Output Compatibility | TTL, MOS, CMOS | - |
| Operating Temperature Range | -25°C to +85°C | °C |
| Delay Time | 300 ns | ns |
| Mounting Type | SMT | - |
Key Features
- Quad differential comparator with four independent voltage comparators.
- Wide operating voltage range: single supply (2 V to 36 V) and dual supplies (±1 V to ±18 V).
- Low supply-current drain independent of supply voltage.
- Low input bias and offset currents.
- Output compatible with TTL, MOS, and CMOS.
- Common-mode input voltage range includes ground.
- Differential input voltage range equal to maximum-rated supply voltage.
- Low output saturation voltage.
- Outputs can be connected to other open-collector outputs to achieve wired-AND relationships.
Applications
- Industrial control systems.
- Automotive systems: infotainment, clusters, body control modules.
- Power supervision and monitoring.
- Oscillators and peak detectors.
- Logic voltage translation.
Q & A
- What is the operating voltage range of the LM239DRG4?
The LM239DRG4 operates from a single supply of 2 V to 36 V and can also operate with dual supplies from ±1 V to ±18 V.
- What is the typical supply current of the LM239DRG4?
The typical supply current is 0.8 mA.
- What is the input bias current of the LM239DRG4?
The input bias current is typically 25 nA.
- Is the LM239DRG4 compatible with TTL, MOS, and CMOS outputs?
- What is the operating temperature range of the LM239DRG4?
The operating temperature range is -25°C to +85°C.
- What is the delay time of the LM239DRG4?
The delay time is 300 ns.
- How many comparators does the LM239DRG4 have?
The LM239DRG4 has four independent voltage comparators.
- What type of mounting does the LM239DRG4 use?
The LM239DRG4 uses Surface Mount Technology (SMT).
- Can the outputs of the LM239DRG4 be connected to achieve wired-AND relationships?
- What are some common applications of the LM239DRG4?
