LM393F-E2

Overview

The LM393F-E2 is a dual analog comparator manufactured by ROHM Semiconductor, designed for general-purpose applications. It operates within a supply voltage range of 3 V to 32 V and draws a typical operating current of 600 uA. The device features an open collector output capable of sourcing 16 mA per channel. Key electrical parameters include a maximum input offset voltage of 4.5 mV, a typical input bias current of 250 nA, and a response time of 1 us. It supports ground-sensed inputs and outputs, functioning reliably across an extended temperature range from -40 C to +85 C.

Feature Summary

• Ground-sensed input and output capability allows operation with signals referenced to ground even on single-supply systems.
• Open collector output structure provides flexibility in interfacing with various logic families such as TTL, DTL, ECL, MOS, and CMOS.
• Low offset voltage specification ensures high precision in voltage comparison tasks.

Applications

• General purpose voltage monitoring
• Over/under voltage detection circuits
• Temperature sensing interfaces

Procurement Notes

Verify the specific suffix 'E2' against the manufacturer's latest documentation to confirm pinout compatibility and RoHS status. Confirm that the SOP-8 package variant matches your PCB footprint requirements. Check for end-of-life or not-recommended-for-new-designations which may impact long-term availability.

Selection Notes

Select this component when a dual comparator with ground-referenced input/output is required. Ensure the design accommodates the open-collector output nature, requiring external pull-up resistors. Verify that the 3 V minimum supply voltage aligns with the system power rails and that the 16 mA sink current meets load requirements.

Part Context

This part belongs to the LM393 series of dual comparators, widely used in consumer, automotive, and industrial electronics. The ROHM version maintains functional compatibility with industry-standard equivalents while offering specific packaging and reliability characteristics defined by the manufacturer's SOP-8 form factor.

Replacement Considerations

Cross-reference with other LM393 variants from different manufacturers if supply constraints exist. Verify that alternative parts maintain the same 32 V maximum supply rating and open-collector output configuration to ensure circuit compatibility without redesign.