Is there a pin-compatible replacement for LM393BIDR?

Yes, parts from the LM393 and LM293 families in the same SOIC-8 package, like LM293DR and LM393DR2G, are typically pin-compatible. However, electrical parameters must always be verified against your circuit's requirements.

What risks should I check before replacing LM393BIDR?

Key risks include differences in operating temperature range, input offset voltage, and input bias current. Also, verify the supply voltage range, as some alternatives like the LMV393IDR are for low-voltage only.

LM393BIDR Alternatives, Datasheet & Cross Reference | Texas Instruments

The LM393BIDR from Texas Instruments is a high-precision, industrial-grade dual differential comparator in a SOIC-8 package. Finding a substitute requires careful matching of voltage range, temperature, and precision.

AI replacement insight

Electrical riskmedium

Most alternatives have higher offset/bias current and narrower temperature ranges.

Package risklow

SOIC-8 is a standard package with typically consistent pinouts in this family.

Can it be replaced directly?

No direct 1-to-1 replacement exists without parametric trade-offs. The LM293DR is a close functional match but has a narrower temperature range and lower precision.

Best replacement path

Downgrade to LM293DR if a -25°C minimum temperature is acceptable, or use LM393DR2G for non-industrial applications.

Main risk

The main risk is performance degradation due to wider electrical tolerances and narrower operating temperature ranges in most alternatives.

Recommended alternatives

A close functional alternative from the same manufacturer with slightly lower precision and temperature range.

View details

Alternative comparison matrix

Feature / factor	LM393BIDR	LM293DR	LM393DR2G	LMV393IDR	Compatibility / risk
Package	SOIC-8	SOIC-8	-	-	SOIC-8 — Form factor matches.
Voltage	2V to 36V	2mV typ	-	-	2.7V to 5.5V — Low voltage only, not a general replacement.
Temperature	-40°C to 85°C	-25°C to 85°C	-	-	-40°C to 125°C — Wider temperature range.
Current	3.5nA typ	-	25nA	-	25nA — Input bias current is higher.

Application & sourcing insights

Questions & answers

The best alternative depends on your application's tolerance for temperature and precision. The LM293DR is a functional alternative with slightly lower specs, while the LM393DR2G is a similar part with a commercial temperature range.