Overview
The LM239DR is a quad differential comparator integrated circuit manufactured by Texas Instruments. It is part of the LM239 series, which is known for its high performance and versatility in various analog and digital applications. This commercial-grade IC is designed to operate from a single power supply over a wide range of voltages, making it suitable for a variety of electronic systems.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage (VS) | -0.3 to 38 | V |
| Differential Input Voltage (VID) | ±38 | V |
| Input Pins Voltage (IN+, IN-) | -0.3 to 38 | V |
| Current into Input Pins | -50 | mA |
| Output Pin Voltage | -0.3 to 38 | V |
| Output Sink Current | 25 | mA |
| Input Offset Voltage (Max over temp) | ±5.5 | mV |
| Input Bias Current (typ / max) | 3.5 / 25 | nA |
| Response Time (typ) | 1 | µsec |
| Junction Temperature (TJ) | -65 to 150 | °C |
| Storage Temperature (Tstg) | -65 to 150 | °C |
| Package Type | 14-SOIC |
Key Features
- Quad differential comparators in a single package.
- Operates from a single power supply over a wide range of voltages (up to 38 V).
- Low input offset voltage (±5.5 mV max over temperature).
- Low input bias current (3.5 nA typical, 25 nA maximum).
- Low supply current (200 µA per comparator).
- Faster response time (1 µsec typical).
- Output compatible with TTL, MOS, and CMOS logic.
- Common-mode input voltage range includes ground.
- Differential input voltage range equal to maximum-rated supply voltage (±38 V).
- Low output saturation voltage.
- ESD rating (HBM): 2k V.
Applications
- Analog-to-digital converters.
- Threshold detectors.
- Window comparators.
- Level detectors.
- Pulse generators.
- Schmitt triggers.
- Line receivers.
- Automotive and industrial control systems.
Q & A
- What is the maximum supply voltage for the LM239DR?
The maximum supply voltage for the LM239DR is 38 V.
- What is the typical response time of the LM239DR?
The typical response time of the LM239DR is 1 µsec.
- What is the input offset voltage of the LM239DR?
The maximum input offset voltage of the LM239DR is ±5.5 mV over temperature.
- Is the LM239DR compatible with TTL, MOS, and CMOS logic?
- What is the ESD rating of the LM239DR?
The ESD rating of the LM239DR is 2k V (HBM).
- What are the common package types for the LM239DR?
The LM239DR is available in 14-SOIC, among other package types.
- What is the junction temperature range for the LM239DR?
The junction temperature range for the LM239DR is -65 to 150 °C.
- Can the LM239DR operate from a single power supply?
- What are some typical applications of the LM239DR?
The LM239DR is used in analog-to-digital converters, threshold detectors, window comparators, level detectors, pulse generators, Schmitt triggers, line receivers, and automotive and industrial control systems.
- What is the input bias current of the LM239DR?
The typical input bias current of the LM239DR is 3.5 nA, with a maximum of 25 nA.
