The Texas Instruments TXS0104ERGYR is a 4-channel bidirectional voltage-level translator with auto-direction sensing, designed to connect digital logic domains running at different supply voltages. It handles open-drain and push-pull outputs at up to 24 Mbps, making it a common choice for I2C, SPI, and UART level shifting between 1.8V, 2.5V, 3.3V, and 5V logic families.
The 1.65 V minimum on VCCA also covers 1.8 V logic with margin, answering the common question of whether this part works with 1.8 V logic (it does, on the A-side).
Data rate and I2C compatibility
Rated at 24 Mbps, this translator comfortably exceeds the 400 kHz (Fast-mode) and 1 MHz (Fast-mode Plus) I2C data rates. It is suitable for I2C level shifting as long as the bus capacitance and pull-up resistors stay within the device's drive capability — the open-drain output type supports the wired-AND signalling I2C requires. For higher-speed serial interfaces like SPI at 10+ MHz, the 24 Mbps ceiling is adequate for most 8- and 16-bit transfers, but check the bus timing margin at your target frequency.
Package and footprint notes for the shop floor
The part is surface-mount only. No MSL rating is listed in the spec record, so assume MSL 1 (no bake required) unless the reel label says otherwise; if the pouch seal is broken, bake at 125°C for 48 hours before reflow to be safe.
It is a standard production part from Texas Instruments, available through independent distribution.