What this translator does — and the one spec that decides fit
The Texas Instruments TXB0104ZXUR is a 4-channel, bidirectional voltage-level translator with auto-direction sensing. The outputs are tri-state and non-inverted, so the bus goes high-impedance when the chip is disabled or the supply is off.
Package and layout — the 12-BGA Microstar Junior
This part comes in a 12-UFBGA package, specifically the 12-BGA Microstar Junior with a 2.5 mm × 2 mm body (supplier device package 12-BGA Microstar Junior). It is a surface-mount BGA with a fine ball pitch — expect to use micro-vias or at least a four-layer board to route the signals out from under the package.
The industrial range also covers most factory-automation and instrumentation enclosures.
For new designs, you will need to select a current-production alternative.
