Overview
The LM139J/PB, produced by Texas Instruments, is a low power, low offset voltage quad comparator integrated circuit. This device consists of four independent precision voltage comparators designed to operate over a wide range of supply voltages. It is particularly notable for its ability to function from a single power supply or from split power supplies, making it versatile for various applications. The LM139J/PB is housed in a 14-pin CDIP (Ceramic Dual In-Line Package) and is characterized for operation over the full military temperature range of -55°C to 125°C.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package | CDIP (J) | - |
| Pins | 14 | - |
| Operating Temperature Range | -55 to 125 | °C |
| Supply Voltage Range | 2 to 36 V DC or ±1 to ±18 V DC | V |
| Supply Current Drain | 0.8 mA | mA |
| Input Biasing Current | 25 nA | nA |
| Input Offset Current | ±5 nA | nA |
| Offset Voltage | ±3 mV | mV |
| Input Common-Mode Voltage Range | Includes GND | - |
| Differential Input Voltage Range | Equal to the Power Supply Voltage | - |
| Low Output Saturation Voltage | 250 mV at 4 mA | mV |
| Output Voltage Compatibility | TTL, DTL, ECL, MOS, and CMOS Logic Systems | - |
Key Features
- Wide Supply Voltage Range: Operates from 2 to 36 V DC or ±1 to ±18 V DC.
- Low Supply Current Drain: 0.8 mA, independent of the supply voltage.
- Low Input Biasing and Offset Currents: 25 nA and ±5 nA, respectively.
- Low Offset Voltage: ±3 mV.
- Input Common-Mode Voltage Range Includes GND: Allows sensing near ground even with a single power supply.
- Differential Input Voltage Range Equal to Power Supply Voltage: No restriction on differential input voltage up to the supply voltage.
- Low Output Saturation Voltage: 250 mV at 4 mA.
- Output Compatibility: Compatible with TTL, DTL, ECL, MOS, and CMOS logic systems.
- High Precision Comparators: Reduced VOS drift over temperature.
- Power Drain Suitable for Battery Operation: Low power consumption makes it suitable for battery-powered devices.
Applications
- Limit Comparators: Used in applications requiring precise voltage comparison.
- Simple Analog to Digital Converters: Can be used in basic A/D conversion circuits.
- Pulse, Squarewave, and Time Delay Generators: Useful in generating various types of signals.
- Wide Range VCO (Voltage-Controlled Oscillator): Can be part of VCO circuits.
- MOS Clock Timers and Multivibrators: Used in timing and oscillation circuits.
- High Voltage Digital Logic Gates: Compatible with various digital logic systems.
Q & A
- What is the operating temperature range of the LM139J/PB?
The operating temperature range is -55°C to 125°C.
- What is the supply voltage range for the LM139J/PB?
The supply voltage range is 2 to 36 V DC or ±1 to ±18 V DC.
- What is the typical supply current drain of the LM139J/PB?
The typical supply current drain is 0.8 mA, independent of the supply voltage.
- What is the input biasing current of the LM139J/PB?
The input biasing current is 25 nA.
- What is the offset voltage of the LM139J/PB?
The offset voltage is ±3 mV.
- Can the LM139J/PB operate with a single power supply?
Yes, it can operate from a single power supply or from split power supplies.
- What is the output saturation voltage of the LM139J/PB?
The output saturation voltage is 250 mV at 4 mA.
- Is the LM139J/PB compatible with TTL, DTL, ECL, MOS, and CMOS logic systems?
Yes, it is compatible with these logic systems.
- What are some common applications of the LM139J/PB?
Common applications include limit comparators, simple analog to digital converters, pulse and squarewave generators, and high voltage digital logic gates.
- Is the LM139J/PB suitable for battery operation?
Yes, it is suitable for battery operation due to its low power consumption.
