LM2901N

Overview

The LM2901N is a low-power quad voltage comparator manufactured by Texas Instruments. It features four independent differential input channels housed in a 14-pin PDIP package. The device operates with a supply voltage range from 2 V to 36 V and supports both single and dual power configurations. Key electrical parameters include an input offset voltage of 7 mV, an input bias current of 250 nA, and a typical response time of 1.3 μs. It utilizes open-collector outputs capable of sinking up to 16 mA at 5 V. The component functions within a temperature range of -40°C to +125°C.

Feature Summary

• Integrates four independent differential voltage comparators for multi-channel signal processing
• Features open-collector outputs allowing flexible interfacing with various logic families
• Supports operation across a wide common-mode input voltage range including ground
• Designed for low power consumption suitable for battery-operated applications

Applications

• Over-voltage and under-voltage detection circuits
• Threshold detection and level shifting
• Simple time delay and pulse generation circuits
• Window comparator designs

Procurement Notes

Verify the specific manufacturer source as the LM2901N part number appears associated with multiple vendors including Texas Instruments and STMicroelectronics in public records. Confirm the package type matches the required 14-pin DIP configuration. Ensure the datasheet specifications align with the intended operational voltage and temperature requirements before integration into the design.

Selection Notes

Select this component when a low-cost, general-purpose quad comparator is required. It is suitable for applications where propagation delay is not critical compared to high-speed alternatives. Consider the open-collector output structure for necessary pull-up resistor implementation. Verify compatibility with the system's logic levels and power supply constraints.

Part Context

The LM2901N belongs to the LMx39/LM2901 series of quad comparators. This family includes variants like LM139, LM239, and LM339, which share similar functional characteristics but may differ in temperature ranges or specific electrical parameters. The LM2901N specifically offers extended industrial temperature capabilities compared to commercial grade counterparts.

Replacement Considerations

Compatible substitutes include LM239N, LM339N, and LM139N. These parts share the same pinout and general functionality. Verify specific parameter differences such as operating temperature range and supply voltage limits against the original design requirements.