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LM393M
+BOMLM393-N LOW POWER LOW OFFSET VOL
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ManufacturerFairchild Semiconductor
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Mfr. Part #LM393M
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Datasheet LM393M DataSheet
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Package SOIC (D)-8
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In Stock2504
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Specifications
| Attribute | Value |
| Package | Bulk |
| ProductStatus | Active |
| Type | Differential |
| NumberofElements | 2 |
| Voltage-SupplySingle/Dual(±) | 2V ~ 36V, ±1V ~ 18V |
| Voltage-InputOffset(Max) | 5mV @ 5V |
| Current-InputBias(Max) | 0.25µA @ 5V |
| Current-Output(Typ) | 18mA @ 5V |
| Current-Quiescent(Max) | 2.5mA |
| OperatingTemperature | 0°C ~ 70°C |
| Package/Case | 8-SOIC (0.154, 3.90mm Width) |
| MountingType | Surface Mount |
Overview
Description
Key features of the LM393M include low power consumption, wide power supply voltage range (from 2V to 36V), and low input bias current. These features make it ideal for use in battery-operated devices. The IC's open-collector output allows for wired OR connections, enabling it to be easily interfaced with other digital logic circuits.
Typical applications of the LM393M include level shifters, zero-crossing detectors, and simple analog-to-digital converters. Its compact form factor makes it suitable for use in space-constrained designs. Overall, the LM393M is a reliable and versatile component commonly used in various consumer electronics, automotive, and industrial control systems.
Equivalent
Features
1. Dual Comparator: Contains two independent voltage comparators in a single 8-pin package.
2. Wide Supply Voltage Range: Operates from 2V to 36V for a single supply and ±1V to ±18V for dual supplies.
3. Low Input Offset Voltage: Typically around 2mV, ensuring high precision.
4. Low Input Bias Current: Typically around 25nA, which is beneficial for high-impedance signal sources.
5. Low Output Saturation Voltage: When the output is in the low state, the saturation voltage is typically 200mV at a 4mA load.
6. Open-Collector Output: Enables wired-AND connections and the ability to pull up the output to a higher voltage than the supply voltage.
7. Wide Temperature Range: Operates effectively between -40°C to +85°C.
8. High Gain: Ensures fast transition and high-speed performance.
These characteristics make the LM393M suitable for applications like zero-crossing detectors, voltage level shifting, and other signal comparison tasks.
Pinout
1. VCC (Pin 8): Positive power supply voltage.
2. GND (Pin 4): Ground or negative power supply voltage.
3. IN+ (Pins 3 & 5): Non-inverting inputs for the two comparators.
4. IN- (Pins 2 & 6): Inverting inputs for the two comparators.
5. OUT (Pins 1 & 7): Outputs for the two comparators.
The LM393M comparator operates by comparing the voltage levels at the non-inverting and inverting inputs (IN+ and IN-). If the voltage at the non-inverting input (IN+) is higher than the inverting input (IN-), the output (OUT) will be high. Conversely, if the voltage at the inverting input (IN-) is higher, the output will be low. This makes the LM393M useful in applications requiring signal comparison, zero-crossing detection, or level shifting.
Manufacturer
Application
1. Voltage Level Sensing: Used in battery management systems to monitor and compare voltage levels.
2. Zero-Crossing Detectors: Employed in AC signal processing to detect when the waveform crosses zero voltage.
3. Oscillator Circuits: Utilized to generate precise timing signals.
4. Analog Signal Processing: Assists in converting analog signals to digital by comparing them against reference voltages.
5. Simple Analog-to-Digital Converters (ADCs): Works in the front-end of ADCs to prepare signals for further processing.
These features make the LM393M suitable for automotive, industrial, and consumer electronics applications.