SN74LS244

SN74LS240, SN74LS244 Octal Buffer/Line Driver with 3−State Outputs The SN74LS240 and SN74LS244 are Octal Buffers and Line Drivers designed to be employed as memory address drivers, clock drivers and bus-oriented transmitters/receivers which provide improved PC board density. Hysteresis at Inputs to Improve Noise Margins 3-State Outputs Drive Bus Lines or Buffer Memory Address Registers Input Clamp Diodes Limit High-Speed Termination Effects 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 − 15 mA mA IOL Output Current − Low 24 mA 20 1 http://onsemi.com LOW POWER SCHOTTKY MARKING DIAGRAMS SN74LS24xN AWLYYWW 1 PDIP−20 N SUFFIX CASE 738 LS24x 20 AWLYYWW 1 SOIC−20 1 DW SUFFIX CASE 751D 74LS24x AWLYWW 20 1 SOEIAJ−20 1 M SUFFIX CASE 967 x = 0 or 4 A = Assembly Location WL = Wafer Lot YY = Year WW = Work Week ORDERING INFORMATION See detailed ordering and shipping information in the package dimensions section on page 5 of this data sheet. © Semiconductor Components Industries, LLC, 2006 July, 2006 − Rev. 9 1 Publication Order Number: SN74LS240/D SN74LS240, SN74LS244 LOGIC AND CONNECTION DIAGRAMS DIP (TOP VIEW) SN74LS240 VCC 2G 1Y1 2A4 1Y2 2A3 1Y3 2A2 1Y4 2A1 20 19 18 17 16 15 14 13 12 11 1 2 3 4 5 6 7 8 9 10 1G 1A1 2Y4 1A2 2Y3 1A3 2Y2 1A4 2Y1 GND SN74LS244 VCC 2G 1Y1 2A4 1Y2 2A3 1Y3 2A2 1Y4 2A1 20 19 18 17 16 15 14 13 12 11 1...