Overview
The LM393PT, produced by STMicroelectronics, is a low-power dual voltage comparator integrated circuit. It is part of the LM393 family, which includes devices designed to operate from a single supply over a wide range of voltages or from split power supplies. This comparator is known for its low power consumption and versatility, making it suitable for various applications in industrial, automotive, and consumer electronics.
Key Specifications
| Parameter | Value | Unit | Conditions |
|---|---|---|---|
| Supply Voltage Range | 2 V to 36 V or ±1 V to ±18 V | V | |
| Supply Current | 0.45 mA | mA | Independent of supply voltage |
| Input Bias Current | 20 nA | nA | Typical |
| Input Offset Voltage | ±1 mV | mV | Typical |
| Input Offset Current | ±3 nA | nA | Typical |
| Output Saturation Voltage | 80 mV | mV | Isink = 4 mA |
| Operating Temperature Range | 0°C to +70°C | °C | Commercial Grade |
| Package Types | DFN8 2x2, MiniSO8, TSSOP8, SO8 |
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 typical
- Low input offset voltage: ±1 mV typical
- Input common-mode voltage range includes ground
- Low output saturation voltage: 80 mV typical (Isink = 4 mA)
- Differential input voltage range equal to the supply voltage
- TTL, DTL, ECL, MOS, CMOS compatible outputs
- Available in various packages including DFN8 2x2, MiniSO8, TSSOP8, and SO8
- LM393W models offer internal ESD protection: 2 kV HBM
Applications
The LM393PT is widely used in various applications due to its versatility and low power consumption. Some common applications include:
- Industrial automation and control systems
- Automotive systems for sensor signal processing
- Consumer electronics for voltage monitoring and control
- Medical devices requiring precise voltage comparisons
- General-purpose comparator applications in embedded systems
Q & A
- What is the supply voltage range of the LM393PT?
The LM393PT can operate from a single supply voltage range of 2 V to 36 V or from dual supplies ranging from ±1 V to ±18 V.
- What is the typical supply current of the LM393PT?
The typical supply current is 0.45 mA, which is independent of the supply voltage.
- What is the input bias current of the LM393PT?
The input bias current is typically 20 nA.
- What is the input offset voltage of the LM393PT?
The input offset voltage is typically ±1 mV.
- Does the input common-mode voltage range include ground?
- What is the output saturation voltage of the LM393PT?
The output saturation voltage is typically 80 mV when Isink = 4 mA.
- Is the LM393PT compatible with TTL, DTL, ECL, MOS, and CMOS outputs?
- What are the available package types for the LM393PT?
The LM393PT is available in DFN8 2x2, MiniSO8, TSSOP8, and SO8 packages.
- Does the LM393PT have any ESD protection?
The LM393W models offer internal ESD protection of 2 kV HBM.
- What is the operating temperature range of the LM393PT?
The operating temperature range is 0°C to +70°C for the commercial grade.
