Overview
The LM339DR, produced by Texas Instruments, is a quad differential comparator belonging to the next-generation B-version of the industry-standard LM339 and LM2901 comparator family. These comparators are designed to operate from a single power supply over a wide range of voltages and feature significant improvements over their predecessors, including lower offset voltage, higher supply voltage capability, lower supply current, and lower input bias current. The LM339B and LM2901B devices are drop-in replacements for the LM239, LM339, and LM2901 in both 'A' and 'V' grades, making them highly versatile and compatible with various existing designs.
Key Specifications
| Specification | Value |
|---|---|
| Package | SOIC (D) - 14 pins |
| Operating Temperature Range | 0 to 70°C |
| Maximum Supply Voltage | Up to 38 V |
| ESD Rating (HBM) | 2 kV |
| Input Offset Voltage | 0.37 mV |
| Input Bias Current | 3.5 nA |
| Supply Current per Comparator | 200 µA |
| Response Time | 1 µsec |
| Common-Mode Input Voltage Range | Includes ground |
| Differential Input Voltage Range | ±38 V |
| Output Saturation Voltage | Low |
| Output Compatibility | TTL, MOS, CMOS |
Key Features
- Improved specifications of B-version, including lower offset voltage and higher supply voltage capability.
- Low input bias current of 3.5 nA and low supply current of 200 µA per comparator.
- Faster response time of 1 µsec.
- Extended temperature range for LM339B.
- B-version is a drop-in replacement for LM239, LM339, and LM2901 in both 'A' and 'V' grades.
- Common-mode input voltage range includes ground and differential input voltage range equal to maximum-rated supply voltage (±38 V).
- Low output saturation voltage and output compatible with TTL, MOS, and CMOS.
- Improved 2 kV ESD performance and input ruggedness through dedicated ESD clamps.
Applications
The LM339DR is versatile and can be used in a variety of applications, including:
- Threshold detection and window comparators.
- Zero-crossing detectors.
- Pulse-width modulators.
- Relay drivers.
- Line receivers.
- Analog-to-digital converters.
Q & A
- What is the maximum supply voltage for the LM339DR? The maximum supply voltage is up to 38 V.
- What is the input offset voltage of the LM339DR? The input offset voltage is 0.37 mV.
- What is the input bias current of the LM339DR? The input bias current is 3.5 nA.
- How many comparators are included in the LM339DR? The LM339DR includes four independent voltage comparators.
- What is the response time of the LM339DR? The response time is 1 µsec.
- Is the LM339DR compatible with TTL, MOS, and CMOS outputs? Yes, the LM339DR is compatible with TTL, MOS, and CMOS outputs.
- Can the LM339DR replace older versions of the LM339 and LM2901? Yes, the LM339B and LM2901B can drop-in replace the LM239, LM339, and LM2901 in both 'A' and 'V' grades.
- What is the ESD rating of the LM339DR? The ESD rating is 2 kV (HBM).
- What is the operating temperature range of the LM339DR? The operating temperature range is 0 to 70°C.
- What package types are available for the LM339DR? The LM339DR is available in SOIC (D) packages with 14 pins.
