74LS245

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. http://onsemi.com 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 20 E 19 B1 18 B2 17 B3 16 B4 15 B5 14 B6 13 B7 12 B8 11 LOW POWER SCHOTTKY 20 1 1 DIR 2 A1 3 A2 4 A3 5 A4 6 A5 7 A6 8 A7 9 A8 10 GND PLASTIC N SUFFIX CASE 738 TRUTH TABLE INPUTS OUTPUT E L L H DIR L H X Bus B Data to Bus A Bus A Data to Bus B Isolation 20 1 H = HIGH Voltage Level L = LOW Voltage Level X = Immaterial SOIC DW SUFFIX CASE 751D GUARANTEED OPERATING RANGES Symbol VCC TA IOH Parameter Supply Voltage Operating Ambient Temperature Range Output Current – High Min 4.75 0 Typ 5.0 25 Max 5.25 70 – 3.0 – 15 IOL Output Current – Low 24 Unit V °C mA mA mA Device SN74LS245N SN74LS245DW Package 16 Pin DIP 16 Pin Shipping 1440 Units/Box 2500/Tape & Reel ORDERING INFORMATION © Semiconductor Components Industries, LLC, 1999 1 December, 1999 – Rev. 6 Publication Order Number: SN74LS245/D SN74LS245 DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified) Limits Symbol VIH VIL VT...