TCA9406 Datasheet, PDF (11/19 Pages) Texas Instruments – 2-BIT BIDIRECTIONAL 1MHz, I2C BUS AND SMBUS VOLTAGE-LEVEL TRANSLATOR

TCA9406
www.ti.com
SCPS221 – JULY 2010
Integrated Pullup Resistors on the I/Os (A-Ports/B-Ports)
Each A-port I/O has an internal 10-kΩ pullup resistor to V_CCA, and each B-port I/O has an internal 10-kΩ pullup
resistor to V_CCB. If a smaller value of pullup resistor is required, an external resistor must be added from the I/O
to V_CCA or V_CCB (in parallel with the internal 10-kΩ resistors). Adding lower value pull-up resistors may effect V_OL
levels, however. The internal pullups of the PCA9406 are disabled when the OE pin is low.
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