LM339ANSR

Overview

The LM339ANSR is a quad differential comparator manufactured by Texas Instruments, housed in a 14-pin SOP (NS) package. It operates within a supply voltage range of 2 V to 30 V and supports a common-mode input voltage range from ground to the positive rail. The device features an open-collector output configuration with a maximum output current of 6 mA per channel. Key electrical specifications include a typical response time of 1.3 µs, an input bias current of 250 nA, and an input offset voltage of 3 mV. It functions reliably across a commercial temperature range of 0°C to +70°C.

Feature Summary

• Quad differential architecture providing four independent comparison channels
• Open-collector outputs compatible with various logic families
• Wide single-supply or split-supply operation capability
• Common-mode input voltage extends to ground

Applications

• Over/under voltage detection circuits
• Temperature sensing systems
• Peak hold circuits
• Driver for relay control interfaces

Procurement Notes

Verify that the ordering suffix 'SR' corresponds to the tape-and-reel packaging format required for automated assembly processes. Confirm the specific package variant matches the footprint constraints of the target PCB design. Ensure the component grade aligns with the intended commercial operating environment requirements.

Selection Notes

Select this component when multiple independent voltage comparisons are required within a single integrated circuit. It is suitable for designs needing low power consumption and wide supply voltage flexibility. Consider the open-collector output limitation when designing pull-up resistor networks for the desired logic levels.

Part Context

This part belongs to the LM339 family of analog comparators, widely used in industrial and consumer electronics. The LM339ANSR specifically denotes the surface-mount SOP-14 variant produced by Texas Instruments. It serves as a standard solution for general-purpose signal conditioning and threshold detection tasks.

Replacement Considerations

Compatible substitutes include the LM339MX-NOPB and LM339M. Verify pinout compatibility and electrical parameter tolerances before substitution.