74F245 Octal Bidirectional Transceiver with 3-STATE Outputs January 2008 74F245 Octal Bidirectional Transceiver with 3-STATE Outputs Features General Description Non-inverting buffers The 74F245 contains eight non-inverting bidirectional buffers with 3-STATE outputs and is intended for bus- Bidirectional data path oriented applications. Current sinking capability is A outputs sink 24mA 24mA at the A Ports and 64mA at the B Ports. The B outputs sink 64mA Transmit/Receive (T/R) input determines the direction of data flow through the bidirectional transceiver. Trans- mit (active HIGH) enables data from A Ports to B Ports Receive (active LOW) enables data from B Ports to A Ports. The Output Enable input, when HIGH, disables both A and B Ports by placing them in a High Z condition. Ordering Information Order Package Number Number Package Description 74F245SC M20B 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide 74F245SJ M20D 20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide 74F245MSA MSA20 20-Lead Shrink Small Outline Package (SSOP), JEDEC MO-150, 5.3mm Wide 74F245MTC MTC20 20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide 74F245PC 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. 1988 Fairchild Semiconductor Corporation www.fairchildsemi.com 74F245 Rev. 1.4.074F245 Octal Bidirectional Transceiver with 3-STATE Outputs Connection Diagram Logic Symbols IEEE/IEC Truth Table Inputs OE T/R Output LL Bus B Data to Bus A LH Bus A Data to Bus B HX High Z State H = HIGH Voltage Level L = LOW Voltage Level X = Immaterial Unit Loading/Fan Out U.L. Input I /I IH IL Pin Names Description HIGH/LOW Output I /I OH OL OE Output Enable Input (Active LOW) 1.0/2.0 20A/1.2mA T/R Transmit/Receive Input 1.0/2.0 20A/1.2mA A A Side A Inputs or 3.5/1.083 70 A/0.65mA 0 7 3-STATE Outputs 150/40 (38.3) 3 mA/24mA (20mA) B B Side B Inputs or 3.5/1.083 70A/0.65mA 0 7 3-STATE Outputs 600/106.6 (80) 12mA/64mA (48mA) 1988 Fairchild Semiconductor Corporation www.fairchildsemi.com 74F245 Rev. 1.4.0 2