Specifications
| Attribute | Value |
| Package / Case | Tube |
| Part Status | Obsolete |
| Type | General Purpose |
| Number of Elements | 2 |
| Output Type | CMOS, DTL, ECL, MOS, Open-Collector, TTL |
| Voltage - Supply, Single/Dual (±) | 2V ~ 36V, ±1V ~ 18V |
| Voltage - Input Offset (Max) | 5mV @ 30V |
| Current - Input Bias(Max) | 0.25µA @ 5V |
| Current - Output (Typ) | 18mA @ 5V |
| Current - Quiescent (Max) | 2.5mA |
| Operating Temperature | -40°C ~ 105°C |
| Mounting Type | Through Hole |
Overview
Description
The LM293N is a dual voltage comparator integrated circuit commonly used in electronic applications. A voltage comparator is a device that compares two input voltages and provides a digital output indicating which input is higher. The LM293N is part of the LMx93 series, which is designed for operation from a single power supply or dual supplies.
Key features of the LM293N include low input offset voltage, low power consumption, and the ability to operate over a wide range of supply voltages, typically from 2V to 36V. It can handle both positive and negative voltage swings, making it versatile for various applications.
The device is suitable for use in level detection, line driving, and other applications requiring precise voltage comparison. The LM293N's open-collector output can drive loads up to 50mA, which is useful for interfacing with other digital circuits or driving LEDs.
Overall, the LM293N is valued for its reliability, ease of use, and cost-effectiveness in designing circuits that require voltage comparison functionality.
Key features of the LM293N include low input offset voltage, low power consumption, and the ability to operate over a wide range of supply voltages, typically from 2V to 36V. It can handle both positive and negative voltage swings, making it versatile for various applications.
The device is suitable for use in level detection, line driving, and other applications requiring precise voltage comparison. The LM293N's open-collector output can drive loads up to 50mA, which is useful for interfacing with other digital circuits or driving LEDs.
Overall, the LM293N is valued for its reliability, ease of use, and cost-effectiveness in designing circuits that require voltage comparison functionality.
Equivalent
The LM293N is a dual differential comparator. Equivalent products include the LM393LM2903, and LM339 which are dual and quad comparators with similar functionality. These chips are often interchangeable in circuits, but it's important to check the specific electrical characteristics and pin configurations, as variations might exist depending on the manufacturer.
Features
The LM293N is a dual voltage comparator featuring several key characteristics:
1. Dual Comparators: Contains two independent voltage comparators in a single package.
2. Wide Supply Voltage Range: Operates with a supply voltage from 2V to 36V.
3. Low Input Offset Voltage: Typically around 2 mV, ensuring accurate voltage comparison.
4. Low Input Bias Current: Approximately 25 nA, reducing error in high-resistance circuits.
5. Low Output Saturation Voltage: Typically 700 mV at 4 mA, allowing for efficient switching.
6. High Input Impedance: Enables interfacing with high-impedance sources.
7. Open-Collector Output: Allows for wired-OR configurations and interfacing with different logic levels.
8. Wide Temperature Range: Operates efficiently between 0°C to +70°C.
9. Fast Response Time: Typically responds within microseconds, suitable for fast-switching applications.
10. Low Power Consumption: Ideal for battery-operated devices.
These features make the LM293N suitable for various applications, including zero-crossing detectors, voltage level translators, and general-purpose voltage comparison tasks.
1. Dual Comparators: Contains two independent voltage comparators in a single package.
2. Wide Supply Voltage Range: Operates with a supply voltage from 2V to 36V.
3. Low Input Offset Voltage: Typically around 2 mV, ensuring accurate voltage comparison.
4. Low Input Bias Current: Approximately 25 nA, reducing error in high-resistance circuits.
5. Low Output Saturation Voltage: Typically 700 mV at 4 mA, allowing for efficient switching.
6. High Input Impedance: Enables interfacing with high-impedance sources.
7. Open-Collector Output: Allows for wired-OR configurations and interfacing with different logic levels.
8. Wide Temperature Range: Operates efficiently between 0°C to +70°C.
9. Fast Response Time: Typically responds within microseconds, suitable for fast-switching applications.
10. Low Power Consumption: Ideal for battery-operated devices.
These features make the LM293N suitable for various applications, including zero-crossing detectors, voltage level translators, and general-purpose voltage comparison tasks.
Pinout
The LM293N is a dual comparator IC with 8 pins. Here is the pin configuration and function:
1. Pin 1 (Output 1): Output of comparator 1.
2. Pin 2 (Inverting Input 1): Inverting input for comparator 1.
3. Pin 3 (Non-Inverting Input 1): Non-inverting input for comparator 1.
4. Pin 4 (VCC- or GND): Ground or negative supply voltage.
5. Pin 5 (Non-Inverting Input 2): Non-inverting input for comparator 2.
6. Pin 6 (Inverting Input 2): Inverting input for comparator 2.
7. Pin 7 (Output 2): Output of comparator 2.
8. Pin 8 (VCC+ or VDD): Positive supply voltage.
The LM293N is used in applications requiring two independent voltage comparisons, such as signal processing and control systems. Each comparator can compare an input voltage on the non-inverting pin against a reference voltage on the inverting pin, providing a digital output based on the comparison result.
1. Pin 1 (Output 1): Output of comparator 1.
2. Pin 2 (Inverting Input 1): Inverting input for comparator 1.
3. Pin 3 (Non-Inverting Input 1): Non-inverting input for comparator 1.
4. Pin 4 (VCC- or GND): Ground or negative supply voltage.
5. Pin 5 (Non-Inverting Input 2): Non-inverting input for comparator 2.
6. Pin 6 (Inverting Input 2): Inverting input for comparator 2.
7. Pin 7 (Output 2): Output of comparator 2.
8. Pin 8 (VCC+ or VDD): Positive supply voltage.
The LM293N is used in applications requiring two independent voltage comparisons, such as signal processing and control systems. Each comparator can compare an input voltage on the non-inverting pin against a reference voltage on the inverting pin, providing a digital output based on the comparison result.
Manufacturer
The LM293N is a voltage comparator made by multiple manufacturers, including Texas Instruments and ON Semiconductor.
Texas Instruments (TI) is an American technology company that designs and manufactures semiconductors and various integrated circuits, which it sells to electronics designers and manufacturers globally. TI is one of the largest semiconductor companies in the world and is well-known for its analog chips and embedded processors.
ON Semiconductor (now known as onsemi) is also an American semiconductor supplier company. It provides a wide range of chips and solutions for automotive, industrial, cloud power, and IoT applications. The company is known for delivering high performance and energy-efficient products.
Both companies operate in the technology and electronics industry, specializing in semiconductor products that are critical components in a wide variety of electronic devices.
Texas Instruments (TI) is an American technology company that designs and manufactures semiconductors and various integrated circuits, which it sells to electronics designers and manufacturers globally. TI is one of the largest semiconductor companies in the world and is well-known for its analog chips and embedded processors.
ON Semiconductor (now known as onsemi) is also an American semiconductor supplier company. It provides a wide range of chips and solutions for automotive, industrial, cloud power, and IoT applications. The company is known for delivering high performance and energy-efficient products.
Both companies operate in the technology and electronics industry, specializing in semiconductor products that are critical components in a wide variety of electronic devices.
Application
The LM293N is a dual voltage comparator integrated circuit commonly used in electronics applications. Its primary application areas include voltage level detection, signal conditioning, and threshold switching. It is ideal for use in devices requiring a comparison between two voltage levels, such as zero-crossing detectors, pulse-width modulation, and oscillator circuits. It can also be employed in battery management systems for under-voltage lockout and over-voltage protection. Due to its wide operating voltage range and low power consumption, it is suitable for automotive, industrial, and consumer electronics applications. Additionally, it can be utilized in simple analog-to-digital converters and in operational amplifier circuits for designing precision voltage comparators.
Package
The LM293N is a dual comparator IC commonly available in a Dual In-line Package (DIP) with 8 pins. This package type is suitable for through-hole mounting on a printed circuit board (PCB).
