74AC240, 74ACT240 Octal Buffer/Line Driver with 3-STATE Outputs January 2008 74AC240, 74ACT240 Octal Buffer/Line Driver with 3-STATE Outputs Features General Description I and I reduced by 50% The AC/ACT240 is an octal buffer and line driver CC OZ designed to be employed as a memory address driver, Inverting 3-STATE outputs drive bus lines or buffer clock driver and bus oriented transmitter or receiver memory address registers which provides improved PC board density. Outputs source/sink 24mA ACT240 has TTL-compatible inputs Ordering Information Package Order Number Number Package Description 74AC240SC M20B 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide 74AC240SJ M20D 20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide 74AC240MTC MTC20 20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide 74AC240PC N20A 20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide 74ACT240SC M20B 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide 74ACT240SJ M20D 20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide 74ACT240MTC MTC20 20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide 74ACT240PC N20A 20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide Device also available in Tape and Reel. Specify by appending suffix letter X to the ordering number. All packages are lead free per JEDEC: J-STD-020B standard. 2006 Fairchild Semiconductor Corporation www.fairchildsemi.com 74AC240, 74ACT240 Rev. 1.2.074AC240, 74ACT240 Octal Buffer/Line Driver with 3-STATE Outputs Connection Diagram Logic Symbol IEEE/IEC 1 20 OE V 1 CC 2 19 I OE OE EN 0 2 1 3 18 O O 4 0 4 17 I I I O 1 4 0 0 5 16 O O I O 5 1 1 1 6 15 I I I O 2 5 2 2 14 7 O O I3 O3 6 2 8 13 I I 3 6 9 12 O O 7 3 10 11 OE 2 EN GND I 7 I O 4 4 I O 5 5 I O 6 6 I O 7 7 Pin Description Pin Names Description Truth Tables OE , OE 3-STATE Output Enable Inputs 1 2 I I Inputs Inputs 0 7 Outputs O O Outputs 0 7 OE I (Pins 12, 14, 16, 18) 1 n LL H LH L HX Z Inputs Outputs OE I (Pins 3, 5, 7, 9) 2 n LL H LH L HX Z H = HIGH Voltage Level L = LOW Voltage Level X = Immaterial Z = High Impedance 2006 Fairchild Semiconductor Corporation www.fairchildsemi.com 74AC240, 74ACT240 Rev. 1.2.0 2