LM393LVDDFR

Overview

The LM393LVDDFR is a dual differential voltage comparator from Texas Instruments, designed for low-voltage single-supply operation. It operates within a supply voltage range of 1.65 V to 5.5 V and features rail-to-rail input capability. The device incorporates open-drain outputs with a maximum sink current of 100 mA per channel. Key electrical specifications include a typical quiescent current of 25 uA, an input offset voltage of 400 uV, and a propagation delay of 600 ns. It is housed in an SOT-23-8 package and supports industrial temperature ranges.

Feature Summary

• Supports low-voltage single-supply operation down to 1.65 V
• Features rail-to-rail input common-mode voltage range including ground
• Provides high-current open-drain outputs capable of sinking up to 100 mA

Applications

• Battery-powered portable electronics requiring ultra-low power consumption
• Low-voltage signal conditioning and threshold detection circuits
• Industrial control systems operating within extended temperature ranges

Procurement Notes

Verify the specific suffix DDFFR confirms the SOT-23-8 surface-mount packaging and tape-and-reel delivery format. Ensure the component meets RoHS compliance requirements for your target market. Confirm that the 100 mA output current rating aligns with your load drive requirements without exceeding thermal limits.

Selection Notes

Select this component when system design demands operation below standard 3.3 V thresholds while maintaining robust output drive capabilities. The low input bias current and offset voltage make it suitable for precision sensing applications. Consider the SOT-23-8 footprint constraints during PCB layout planning.

Part Context

This part belongs to the LM393LV family, which extends the traditional LM393 comparator functionality into the low-voltage domain. Unlike standard comparators requiring higher voltages, this series enables operation in modern battery-centric designs where power efficiency is critical. It maintains compatibility with digital logic interfaces through its open-drain architecture.

Replacement Considerations

The LM393LVDR serves as a pin-compatible alternative featuring SOIC-8 packaging instead of SOT-23-8. Verify that the package dimension differences do not impact existing board layouts before substitution.