LM2904 8SOIC Threshold Comparator

The LM2904 is a dual analog comparator manufactured by Texas Instruments. It has a number of features that make it an ideal device for a variety of applications, such as Low consumption (can work with only 3.3V power supply), Low threshold voltage (making it suitable for measuring low voltage signals), High speed (can operate at frequencies up to 10 MHz).

The LM2904 is a threshold comparator. When the voltage at the positive input of the comparator is greater than the voltage at the negative input, the comparator output is high. When the voltage at the negative input of the comparator is greater than the voltage at the positive input, the comparator output is low.

LM2904 Technical Specifications

• Supply voltage: 3.3V
• Threshold voltage: 1.5V
• Switching speed: 10MHz
• Operating temperature: -40°C ~ 85°C

— Compared to TLC393QDR

The LM2904 is a dual analog comparator similar to the TLC393QDR. Both devices are low power and can operate at high frequencies. However, the LM2904 has a lower threshold voltage than the TLC393QDR, making it suitable for measuring low voltage signals.

[title] - Electronic comparators are devices that compare two analog signals and generate a digital output that indicates which signal is greater. They are versatile electronic components that can be used in a variety of applications, including Switch control, Event Detection, Signal filter.

It usually consists of two inputs and one output. The inputs are used to connect analog signals to be compared. The output indicates which signal is greater. When the voltage on the positive input of the comparator is greater than the voltage on the negative input, the comparator output is high. When the voltage on the negative input of the comparator is greater than the voltage on the positive input, the comparator output is low.

There are two main types of electronic comparators: Threshold comparators (with a specific threshold voltage. When the voltage at one of the comparator inputs exceeds the threshold voltage, the comparator output changes state), Window comparators (They have two threshold voltages. When the voltage at one of the comparator inputs is between the two threshold voltages, the comparator output is high. When the voltage at one of the comparator inputs is outside the two threshold voltages, the comparator output is low.)