LM293PG4

Overview

The LM293PG4 is a dual differential voltage comparator manufactured by Texas Instruments, belonging to the LMx93 series. It features two independent comparators designed for single-supply operation over a wide voltage range, with input common-mode voltage including ground. The device utilizes an open-collector output configuration compatible with TTL and CMOS logic families. It is housed in an 8-pin PDIP package intended for through-hole mounting. Key electrical characteristics include a supply voltage range of 2 V to 30 V, a typical response time of 1.3 μs, and a maximum operating temperature of +85 °C.

Feature Summary

• Dual differential input architecture providing two independent comparison channels within a single integrated circuit.
• Open-collector output stage enabling direct interfacing with various digital logic families without additional pull-up components.
• Wide single-supply voltage capability allowing operation from low voltages up to 30 V while maintaining ground-referenced input common-mode ranges.

Applications

• Over-voltage and under-voltage detection circuits
• Window comparator configurations
• Level shifting and logic interface applications

Procurement Notes

Verify the specific suffix 'G4' against the manufacturer's current datasheet to confirm compliance with RoHS directives and material declarations. Ensure the procurement channel provides original manufacturer documentation rather than generic distributor summaries. Confirm that the PDIP-8 package dimensions match the target PCB footprint requirements before finalizing orders.

Selection Notes

Select this component when a dual-channel solution is required for single-supply systems operating between 2 V and 30 V. The open-collector output necessitates external pull-up resistors, which should be sized according to the load capacitance and desired switching speed. Consider the 1.3 μs propagation delay for timing-critical applications where faster alternatives like the LM393 might be preferred.

Part Context

The LM293PG4 is part of the broader LMx93 family, which includes variants such as the LM193, LM293, LM393, and LM2903. These devices share similar functional architectures but differ in temperature ranges, offset voltages, and packaging options. The PG4 designation typically indicates a lead-free, halogen-free variant compliant with environmental standards, distinguishing it from older non-compliant versions.

Replacement Considerations

The LM393P is a functionally equivalent alternative within the same family, offering similar performance characteristics. Verify pinout compatibility and ensure that the replacement part meets the specific temperature and voltage requirements of the existing design.