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This literature is subject to all applicable copyright laws and is not for resale in any manner.74LVT2245, 74LVTH2245 Low Voltage Octal Bidirectional Transceiver with 3-STATE Inputs/Outputs and 25 Series Resistors in the B Port Outputs January 2008 74LVT2245, 74LVTH2245 Low Voltage Octal Bidirectional Transceiver with 3-STATE Inputs/Outputs and 25 Series Resistors in the B Port Outputs Features General Description Input and output interface capability to systems at The LVT2245 and LVTH2245 contain eight non-inverting 5V V bidirectional buffers with 3-STATE outputs and are CC intended for bus-oriented applications. The Transmit/ Equivalent 25 series resistor on B Port outputs Receive (T/R ) input determines the direction of data flow Bushold data inputs eliminate the need for external through the bidirectional transceiver. Transmit (active- pull-up resistors to hold unused inputs (74LVTH2245), HIGH) enables data from A Ports to B Ports Receive also available without bushold feature (74LVT2245) (active-LOW) enables data from B Ports to A Ports. The Live insertion/extraction permitted Output Enable input, when HIGH, disables both A and B Power Up/Down high impedance provides glitch-free Ports by placing them in a high impedance state. The bus loading equivalent 25 -series resistor in the B Port helps reduce Outputs source/sink 12mA/+12mA on B Port, output overshoot and undershoot. 32mA/+64mA on A Port The LVTH2245 data inputs include bushold, eliminating Latch-up performance exceeds 500mA the need for external pull-up resistors to hold unused ESD performance: inputs. Human-body model > 2000V These transceivers are designed for low voltage (3.3V) Machine model > 200V V applications, but with the capability to provide a TTL CC Charged-device model > 1000V interface to a 5V environment. The LVT2245 and LVTH2245 are fabricated with an advanced BiCMOS technology to achieve high speed operation similar to 5V ABT while maintaining low power dissipation. Ordering Information Package Order Number Number Package Description 74LVT2245WM M20B 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide 74LVT2245SJ M20D 20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide 74LVT2245MTC MTC20 20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide 74LVTH2245WM M20B 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide 74LVTH2245SJ M20D 20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide 74LVTH2245MTC MTC20 20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm 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. 1999 Fairchild Semiconductor Corporation www.fairchildsemi.com 74LVT2245, 74LVTH2245 Rev. 1.5.0