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SP339B Datasheet(PDF) 13 Page - Exar Corporation |
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SP339B Datasheet(HTML) 13 Page - Exar Corporation |
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13 / 23 page ![]() FIGURE 3. MODE 10 - RS-485 HALF DUPLEX L1 = 1 L2 L3 L6 = 1 L8 = 1 L9 = 1 Vcc R1 T1 R2 120Ω 11 12 13 14 15 16 17 18 19 20 40 39 38 37 36 35 34 33 32 31 1 2 3 4 5 6 7 8 9 10 30 29 28 27 26 25 24 23 22 21 All pull-downs 330kΩ C3 0.1µF C2 0.1µF C1 0.1µF C4 0.1µF Cc 1.0µF SP339B 13 REV. 1.0.0 RS-232/RS-485/RS-422 TRANSCEIVER WITH INTERNAL TERMINATION |
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