SN74LS245

SN74LS245 Octal Bus Transceiver The SN74LS245 is an Octal Bus Transmitter/Receiver designed for 8-line asynchronous 2-way data communication between data buses. Direction Input (DR) controls transmission of Data from bus A to bus B or bus B to bus A depending upon its logic level. The Enable input (E) can be used to isolate the buses. Hysteresis Inputs to Improve Noise Immunity 2-Way Asynchronous Data Bus Communication Input Diodes Limit High-Speed Termination Effects ESD > 3500 Volts LOGIC AND CONNECTION DIAGRAMS DIP (TOP VIEW) VCC E B1 B2 B3 B4 B5 B6 B7 B8 20 19 18 17 16 15 14 13 12 11 1 2 3 4 5 6 7 8 9 10 DIR A1 A2 A3 A4 A5 A6 A7 A8 GND TRUTH TABLE INPUTS E DIR OUTPUT L L Bus B Data to Bus A L H Bus A Data to Bus B H X Isolation H = HIGH Voltage Level L = LOW Voltage Level X = Immaterial GUARANTEED OPERATING RANGES Symbol Parameter Min Typ Max Unit VCC Supply Voltage TA Operating Ambient Temperature Range 4.75 5.0 5.25 V 0 25 70 °C IOH Output Current − High −3.0 mA −15 mA IOL Output Current − Low 24 mA © Semiconductor Components Industries, LLC, 2006 1 July, 2006 − Rev. 9 http://onsemi.com LOW POWER SCHOTTKY MARKING DIAGRAMS 20 1 SN74LS245N AWLYYWW PDIP−20 N SUFFIX 1 CASE 738 20 LS245 SOIC−20 1 DW SUFFIX AWLYYWW CASE 751D 1 74LS245 AWLYWW 20 SOEIAJ−20 1 M SUFFIX 1 CASE 967 A = Assembly Location WL = Wafer Lot YY = Year WW = Work Week ORDERING INFORMATION Device Package Shipping SN74LS245N PDIP−20 1440 Units/Box...