TCA9406DCUR (TEXAS INSTRUMENTS)

The TCA9406DCUR is a 2-bit bidirectional I?C and SMBus Voltage-level Translator with an output enable (OE) input. It is operational from 1.65 to 3.6V on the A-side, referenced to VCCA and from 2.3 to 5.5V on the B-side, referenced to VCCB. This allows the device to interface between lower and higher logic signal levels at any of the typical 1.8, 2.5, 3.3 and 5V supply rails. The OE input pin is referenced to VCCA, can be tied directly to VCCA, but it is also 5.5V tolerant. The OE pin can also be controlled and set to a logic low to place all the SCL and SDA pins in a high-impedance state, which significantly reduces the quiescent current consumption. Under normal I?C and SMBus operation or other open-drain configurations, the TCA9406 can support up to 2Mbps; therefore, it is compatible with standard I?C speeds where the frequency of SCL is 100kHz (Standard-mode), 400kHz (Fast-mode) or 1MHz (Fast-mode Plus).