Overview
The LM319DT, produced by STMicroelectronics, is a precision high-speed dual comparator designed to operate over a wide range of supply voltages. It can function with a single 5 V logic supply and ground, as well as with power supplies up to ±15 V. This component is characterized by its low input currents, high gains, and fast response times, making it versatile for various applications. The open collector output stage allows compatibility with transistor-transistor logic (TTL) and the ability to drive lamps and relays at currents up to 25 mA.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage | +5 V to ±15 V | V |
| Response Time | Typically 80 ns at ±15 V | ns |
| Input Current | Maximum 1 μA over operating temperature range | μA |
| Output Current | Up to 25 mA | mA |
| Operating Temperature Range | 0 °C to +70 °C | °C |
| Package | SO-14 (plastic micropackage) | |
| Maximum Junction Temperature | 150 °C | °C |
| Thermal Resistance Junction to Ambient | 105 °C/W (SO-14) | °C/W |
Key Features
- Two independent comparators
- Low input currents and high gains
- Open collector output stage compatible with TTL and capable of driving lamps and relays
- Inputs and outputs can be isolated from system ground
- High common-mode slew rate
- Minimum fan-out of two each side
Applications
The LM319DT is suitable for a variety of applications, including:
- Industrial control systems
- Relay drivers
- Window detectors
- Systems requiring high-speed comparison and logic compatibility
Q & A
- What is the supply voltage range for the LM319DT?
The LM319DT can operate with supply voltages ranging from +5 V to ±15 V.
- What is the typical response time of the LM319DT?
The typical response time is 80 ns at ±15 V.
- What is the maximum input current of the LM319DT?
The maximum input current is 1 μA over the operating temperature range.
- Can the inputs and outputs of the LM319DT be isolated from system ground?
- What is the maximum output current of the LM319DT?
The maximum output current is up to 25 mA.
- What are the operating temperature ranges for the LM319DT?
The operating temperature range is 0 °C to +70 °C.
- What package types are available for the LM319DT?
The LM319DT is available in SO-14 (plastic micropackage).
- What is the maximum junction temperature for the LM319DT?
The maximum junction temperature is 150 °C.
- What is the thermal resistance junction to ambient for the SO-14 package?
The thermal resistance junction to ambient is 105 °C/W for the SO-14 package.
- What are some common applications of the LM319DT?
