MC74LCX245DWG ON Semiconductor

MC74LCX245 Low-Voltage CMOS Octal Transceiver With 5 VTolerant Inputs and Outputs (3State, NonInverting) MC74LCX245 V OE B0 B1 B2 B3 B4 B5 B6 B7 CC OE 19 20 19 18 17 16 15 14 13 12 11 T/R 1 2 A0 18 B0 1 2 3 4567 8 9 10 3 A1 T/R A0 A1 A2 A3 A4 A5 A6 A7 GND 17 B1 19 12 4 A2 20 11 16 B2 QFN PIN 1 10 5 A3 15 29 B3 6 A4 Figure 1. Pinout (Top View) 14 B4 PIN NAMES 7 A5 PINS FUNCTION 13 B5 OE Output Enable Input 8 T/R Transmit/Receive Input A6 A0 A7 Side A 3State Inputs or 3State Outputs 12 B0 B7 Side B 3State Inputs or 3StateOutputs B6 9 A7 11 B7 TRUTH TABLE INPUTS OPERATING MODE NonInverting Figure 2. Logic Diagram OE T/R L L B Data to A Bus L H A Data to B Bus H X Z H = High Voltage Level L = Low Voltage Level Z = High Impedance State X = High or Low Voltage Level and Transitions are Acceptable For I reasons, Do Not Float Inputs CC