ITEM NAME:TXB0104 4-Bit Bidirectional Voltage-level Translator With Automatic Directi K4J5 TXB0104 4-Bit.The TXB0104 is designed so that the OE input circuit is supplied by Vcca. Vcca should not exceed Vccb. When the output-enable (OE) input is low, all outputs are placed in the high-impedance state. 1.2 V to 3.6 V on A Port and 1.65 V to 5.5 V on B Port (Vcca less than equal Vccb);.