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Texas Instruments TXB0104PWR — Interface & Transceivers

TXB0104PWR Voltage Level Translator, 100 Mbps, 14-TSSOP

MPNTXB0104PWR
Active

Texas Instruments TXB0104PWR, 4-channel bidirectional voltage-level translator, 100 Mbps, auto-direction sensing, dual-supply 1.2–3.6 V / 1.65–5.5 V, 14-TSSOP, -40°C to 85°C.

$0.69644Ref. price · indicative, final on quote
Texas Instruments TXB0104PWR datasheet (PDF)
Packaging14-TSSOP (0.173", 4.40mm Width)
RoHSROHS3 Compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

TXB0104PWR specifications
ParameterValue
Output typeTri-State, Non-Inverted
Channel typeBidirectional
MountingSurface Mount
Translator typeVoltage Level
Voltage - VCCA1.2 V ~ 3.6 V
Voltage - VCCB1.65 V ~ 5.5 V
Operating temperature-40°C~85°C(TA)
PackageTape & Reel (TR); Cut Tape (CT)
FeaturesAuto-Direction Sensing
Data rate100Mbps
Case14-TSSOP (0.173\", 4.40mm Width)
Number of circuits1
Channels per circuit4

Product details

Auto-direction sensing — one less GPIO to route

The TXB0104PWR is a 4-channel bidirectional voltage-level translator from Texas Instruments. Its auto-direction sensing feature eliminates the need for a direction-control pin — the part determines data flow from the bus state, which simplifies both PCB layout and firmware.

Supply voltage range — what it buys you

VCCB spans 1.65 V to 5.5 V, so the same part bridges a 1.2 V FPGA bank to a 5 V legacy sensor or a 3.3 V MCU to a 5 V display interface. The 100 Mbps data rate is achievable across the full supply range, but edge-rate degradation at the lowest VCCA voltages should be verified against the load capacitance. Outputs are tri-state and non-inverted, which suits shared buses where high-impedance states prevent contention.

The ROHS3 compliance avoids the restricted-substance paperwork in EU-bound builds. For a production BOM, this part carries no imminent obsolescence risk — a straightforward fit for the bill of materials.

Temperature grade — industrial floor ready

That includes outdoor telecom cabinets, factory-floor sensor interfaces, and engine-bay-adjacent electronics that see moderate heat but not the full 125°C automotive soak.

Package — 14-TSSOP footprint

The 14-TSSOP package has a 4.40 mm body width and 0.65 mm pin pitch — a common footprint shared with many TI level translators. The supplier device package is 14-TSSOP, surface-mount.

Frequently asked questions

Is TXB0104PWR bidirectional?

Yes, each of the four channels is bidirectional. The auto-direction sensing means no direction pin is needed — the translator detects the data flow from the bus state. This is the key differentiator from unidirectional translators like the TXU0304BQAR, which require separate A-to-B and B-to-A paths.

What is the equivalent of TXB0104PWR?

A close functional peer is the TXU0304BQAR, also a 4-channel voltage-level translator but unidirectional and rated at 200 Mbps. The TXB0104PWR is bidirectional with auto-direction sensing, so the choice depends on whether your bus requires direction control or can rely on automatic detection. For automotive-grade needs, the CAXC4T774QBQBRQ1 (AEC-Q100, 310 Mbps, bidirectional) is an alternative, though its minimum supply is 0.65 V.

How to use TXB0104PWR for 3.3V to 5V translation?

Connect the 3.3 V rail to VCCA and the 5 V rail to VCCB. The auto-direction sensing handles the translation without firmware intervention. For best signal integrity at 100 Mbps, keep trace lengths short and place 0.1 µF decoupling capacitors close to both supply pins. The output is tri-state and non-inverted, so an enable pin (OE) is not present — the translator is always active when both supplies are present.