Is there a pin-compatible replacement for SN74LVC2T45DCUR?

Currently, no pin-to-pin compatible replacement has been verified. Alternatives like TXU0202QDCURQ1 have a different pinout and are not drop-in replacements.

What risks should I check before replacing SN74LVC2T45DCUR?

Key risks include functional differences (bidirectional vs. unidirectional), pinout incompatibility requiring board redesign, and ensuring the logic levels and data rates meet your application's needs.

SN74LVC2T45DCUR Alternatives, Datasheet & Cross Reference | Texas Instruments

SN74LVC2T45DCUR is a popular 2-bit dual-supply bus transceiver. Finding a direct pin-compatible replacement is challenging, but functional alternatives exist for new designs.

AI replacement insight

Package risklow

Alternatives in the same package exist.

Electrical riskhigh

Functional differences (unidirectional) and pinout mismatch require redesign and validation.

Can it be replaced directly?

No direct, pin-compatible replacement for the SN74LVC2T45DCUR is currently confirmed. All potential candidates require careful review and likely a board redesign.

Best replacement path

Redesign with a functional alternative like TXU0202QDCURQ1 if unidirectional operation is acceptable.

Main risk

The primary risk is the lack of a pin-compatible, bidirectional replacement, forcing a board redesign and functional validation.

Recommended alternatives

Functional alternative in the same package, but it is unidirectional and requires pinout changes.

View details

Alternative comparison matrix

Feature / factor	SN74LVC2T45DCUR	TXU0202QDCURQ1	Compatibility / risk
Package	VSSOP-8 (DCU)	VSSOP-8 (DCU)	VSSOP-8 (DCU) — Package is form-factor compatible.
Interface	Bidirectional Transceiver	Unidirectional Translator	Unidirectional Translator — Target is a bidirectional transceiver.
Pinout	Compatible	Not compatible	Not compatible — Pin functions differ, requires board redesign.
Voltage	1.65 V to 5.5 V	1.1V to 5.5V	1.1V to 5.5V — Candidate has a wider operating voltage range.
Temperature	-40°C to 85°C	-40°C to 125°C	-40°C to 125°C — Candidate has a wider temperature range.

Application & sourcing insights

Questions & answers

For new designs, TXU0202QDCURQ1 is a functional alternative if only unidirectional translation is needed, but it requires a new board layout. No direct drop-in replacement has been identified.