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74F642 Datasheet(PDF) 4 Page - NXP Semiconductors |
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74F642 Datasheet(HTML) 4 Page - NXP Semiconductors |
4 / 10 page Philips Semiconductors Product specification 74F641/74F642* Transceivers 1999 Jan 08 4 * Discontinued part. Please see the Discontinued Products List. LOGIC DIAGRAM – 74F641 VCC = Pin 20 GND = Pin 10 SF01149 T/R 2 3 4 18 17 16 15 14 13 12 B0 B1 B4 B5 B6 B7 OE A1 A4 A5 A6 A7 B2 B3 A3 A2 5 6 7 8 A0 11 9 19 1 LOGIC DIAGRAM – 74F642 VCC = Pin 20 GND = Pin 10 SF01150 T/R 2 3 4 18 17 16 15 14 13 12 B0 B1 B4 B5 B6 B7 OE A1 A4 A5 A6 A7 B2 B3 A3 A2 5 6 7 8 A0 11 9 19 1 FUNCTION TABLE – 74F641 INPUTS INPUTS/OUTPUTS OE T/R An Bn L L A=B INPUTS H H INPUTS B=A H X OFF OFF H = High voltage level L = Low voltage level X = Don’t care OFF= High if pull-up resistor is connected to open collector output FUNCTION TABLE – 74F642 INPUTS INPUTS/OUTPUTS OE T/R An Bn L L A=B INPUTS H H INPUTS B=A H X OFF OFF H = High voltage level L = Low voltage level X = Don’t care OFF= High if pull-up resistor is connected to open collector output |
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