102990044 Seeed Studio

MC74LCX16245 Low-Voltage CMOS 16-Bit Transceiver With 5 VTolerant Inputs and Outputs (3State, NonInverting) MC74LCX16245 Table 1. PIN NAMES T/R1 OE1 1 48 Pins Function B0 A0 2 47 OEn Output Enable Inputs B1 3 46 A1 T/Rn Transmit/Receive Inputs GND 4 45 GND A0 A15 Side A Inputs or 3State Outputs B2 5 44 A2 B0 B15 Side B Inputs or 3State Outputs B3 6 43 A3 V 7 42 V CC CC B4 8 41 A4 B5 9 40 A5 GND 10 39 GND 1 24 B6 A6 11 38 T/R1 T/R2 B7 12 37 A7 48 25 OE1 OE2 B8 13 36 A8 B9 14 35 A9 GND 15 34 GND B8:15 B0:7 A8:15 B10 16 33 A10 A0:7 B11 17 32 A11 V 18 31 V CC CC B12 A12 19 30 One of Eight B13 A13 20 29 GND 21 28 GND B14 22 27 A14 Figure 2. Logic Diagram B15 23 26 A15 T/R2 24 25 OE2 Figure 1. Pinout: 48Lead (Top View) TRUTH TABLE Inputs Inputs OE1 T/R1 OE2 T/R2 Outputs Outputs L L Bus B0:7 Data to Bus A0:7 L L Bus B8:15 Data to Bus A8:15 L H Bus A0:7 Data to Bus B0:7 L H Bus A8:15 Data to Bus B8:15 H X High Z State on A0:7, B0:7 H X High Z State on A8:15, B8:15 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