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SN74AVC8T245QPWRQ1 Scheda tecnica(PDF) 2 Page - Texas Instruments |
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2 / 22 page DIR OE A1 B1 To Seven Other Channels 2 3 22 21 SN74AVC8T245-Q1 SCES785A – DECEMBER 2008 – REVISED JUNE 2011 www.ti.com This device is fully specified for partial-power-down applications using Ioff. The Ioff circuitry disables the outputs, preventing damaging current backflow through the device when it is powered down. The VCC isolation feature ensures that if either VCC input is at GND, both ports are in the high-impedance state. To ensure the high-impedance state during power up or power down, OE should be tied to VCC through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver. ORDERING INFORMATION(1) TA PACKAGE(2) ORDERABLE PART NUMBER TOP-SIDE MARKING QFN – RHL Reel of 1000 CAVC8T245QRHLRQ1 WE245Q –40°C to 125°C TSSOP – PW Reel of 2000 SN74AVC8T245QPWRQ1 WE245Q (1) For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI web site at www.ti.com. (2) Package drawings, thermal data, and symbolization are available at www.ti.com/packaging. FUNCTION TABLE (each 8-bit section) INPUTS OPERATION OE DIR L L B data to A bus L H A data to B bus H X All outputs Hi-Z LOGIC DIAGRAM (POSITIVE LOGIC) 2 Copyright © 2008–2011, Texas Instruments Incorporated |
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