Overview
The LM393ST, produced by STMicroelectronics, is a low-power dual voltage comparator designed to operate from a single supply over a wide range of voltages. It consists of two independent low voltage comparators, making it versatile for various applications. The device can operate from a single supply voltage ranging from 2 V to 36 V or from dual supplies ranging from ±1 V to ±18 V. This flexibility, along with its low power consumption and robust features, makes the LM393ST a reliable choice for many electronic systems.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage | 2 V to 36 V or ±1 V to ±18 V | V |
| Supply Current | 0.45 mA | mA |
| Input Bias Current | 20 nA (typ.) | nA |
| Input Offset Current | ±3 nA (typ.) | nA |
| Input Offset Voltage | ±1 mV (typ.) | mV |
| Input Common-Mode Voltage Range | Includes ground | - |
| Output Saturation Voltage | 80 mV (typ. at Isink = 4 mA) | mV |
| Differential Input Voltage Range | Equal to the supply voltage | - |
| Output Compatibility | TTL, DTL, ECL, MOS, CMOS | - |
| Package Options | DFN8 2x2, MiniSO8, TSSOP8, SO8 | - |
| Operating Temperature Range | 0 to 70 °C | °C |
| ESD Protection (LM393W) | 2 kV HBM on all pins | - |
Key Features
- Wide single-supply voltage range or dual supplies: 2 V to 36 V or ±1 V to ±18 V
- Very low supply current (0.45 mA) independent of supply voltage
- Low input bias current: 20 nA typ.
- Low input offset current: ±3 nA typ.
- Low input offset voltage: ±1 mV typ.
- Input common-mode voltage range includes ground
- Low output saturation voltage: 80 mV typ. (Isink = 4 mA)
- Differential input voltage range equal to the supply voltage
- TTL, DTL, ECL, MOS, CMOS compatible outputs
- Available in DFN8 2x2, MiniSO8, TSSOP8, and SO8 packages
- LM393W with internal ESD protection: 2 kV HBM on all pins
Applications
The LM393ST is suitable for a variety of applications due to its low power consumption, wide operating voltage range, and robust features. Some common applications include:
- Industrial control systems
- Automotive systems
- Medical devices
- Consumer electronics
- Analog signal processing and conditioning
Q & A
- What is the supply voltage range for the LM393ST?
The LM393ST can operate from a single supply voltage ranging from 2 V to 36 V or from dual supplies ranging from ±1 V to ±18 V.
- What is the typical supply current of the LM393ST?
The typical supply current is 0.45 mA, independent of the supply voltage.
- What is the input bias current of the LM393ST?
The input bias current is typically 20 nA.
- Does the LM393ST have ESD protection?
The LM393W version of the comparator has internal ESD protection of 2 kV HBM on all pins.
- What are the package options for the LM393ST?
The LM393ST is available in DFN8 2x2, MiniSO8, TSSOP8, and SO8 packages.
- What is the operating temperature range of the LM393ST?
The operating temperature range is from 0 to 70 °C.
- Is the LM393ST compatible with various logic families?
Yes, the LM393ST has outputs compatible with TTL, DTL, ECL, MOS, and CMOS logic families.
- What is the differential input voltage range of the LM393ST?
The differential input voltage range is equal to the supply voltage.
- Can the input common-mode voltage range include ground?
Yes, the input common-mode voltage range includes ground even when operated from a single power supply voltage.
- What is the typical output saturation voltage of the LM393ST?
The typical output saturation voltage is 80 mV at Isink = 4 mA.
