Is there a pin-compatible replacement for TXB0104RUTR?

The TXB0304RUTR shares the same UQFN-12 package and is expected to have the same pinout. However, it is not a direct drop-in replacement due to a more restrictive VCCB voltage range (max 3.6V vs 5.5V), which is a critical electrical difference.

What risks should I check before replacing TXB0104RUTR?

The main risk is voltage incompatibility. The target TXB0104RUTR supports up to 5.5V on its B-port, while many similar translators only support up to 3.6V. Always verify your VCCB supply voltage before substituting. Also check for feature differences like ESD protection levels.

TXB0104RUTR Alternatives, Datasheet & Cross Reference | Texas Instruments

TXB0104RUTR is a 4-bit bidirectional voltage translator from Texas Instruments, ideal for interfacing between different logic levels up to 5.5V. Finding a replacement requires careful matching of voltage ranges and features.

AI replacement insight

Electrical riskhigh

Candidate VCCB voltage range (max 3.6V) is much lower than target's (max 5.5V).

Package risklow

Top candidates share the same UQFN-12 package, suggesting physical compatibility.

Can it be replaced directly?

No direct, drop-in replacement for TXB0104RUTR was found. All viable candidates have a lower maximum B-port voltage, which is a critical difference.

Best replacement path

Consider TXB0304RUTR only if your B-port voltage does not exceed 3.6V. Otherwise, a new search is required.

Main risk

The primary risk is electrical damage or malfunction due to the candidate's lower VCCB voltage rating (3.6V max) compared to the target's 5.5V.

Recommended alternatives

A related part with a faster data rate but a more restrictive B-port voltage range that requires review.

View details

Alternative comparison matrix

Feature / factor	TXB0104RUTR	TXB0304RUTR	PI4ULS3V304ZMEX	Compatibility / risk
Package	UQFN (12)	UQFN-12	UQFN-12	UQFN-12 — Package matches, enabling physical drop-in.; PI4ULS3V304ZMEX: Package appears to match.
Voltage	1.65V to 5.5V (VCCB)	0.9V to 3.6V	0.9V to 3.6V (from datasheet)	0.9V to 3.6V / 0.9V to 3.6V (from datasheet) — VCCB range is narrower (max 3.6V vs 5.5V). Requires circuit verification.; PI4ULS3V304ZMEX: VCCB range is narrower (max 3.6V vs 5.5V). Requires circuit verification.
Data Rate	100 Mbps	140 Mbps	140 Mbps (from datasheet)	140 Mbps / 140 Mbps (from datasheet) — Candidate is faster, which is generally acceptable.; PI4ULS3V304ZMEX: Candidate is faster.
Temperature	-40°C to 85°C	-40°C to 85°C	-	-40°C to 85°C — Operating temperature range is identical.
Pin Count	12	-	0	0 — Pin count data is missing, pinout must be verified from datasheet.

Application & sourcing insights

Questions & answers

The TXB0304RUTR is a related part from Texas Instruments with a faster data rate, but its B-port voltage is limited to 3.6V, unlike the TXB0104RUTR's 5.5V. This makes it a conditional replacement that must be verified against your circuit's specific voltage requirements.