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MAX3085CPA Datasheet(PDF) 10 Page - Maxim Integrated Products |
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MAX3085CPA Datasheet(HTML) 10 Page - Maxim Integrated Products |
10 / 20 page Fail-Safe, High-Speed (10Mbps), Slew-Rate-Limited RS-485/RS-422 Transceivers 10 ______________________________________________________________________________________ Pin Description PIN — 9 5 — Noninverting Driver Output Y 9 5 6 7 5 6 7 3 — 4 4 — 5 Driver Input. With DE high, a low on DI forces noninverting output low and inverting output high. Similarly, a high on DI forces non- inverting output high and inverting output low. DI 5 Slew-Rate-Limit Selector Pin. Connect SRL to GND for 10Mbps communication rate; connect to VCC for 500kbps communication rate. Leave unconnected for 115kbps communication rate. SRL — Ground GND 6, 7 8 8 — — TXP — 4 4 — 3 Driver Output Enable. Drive DE high to enable driver outputs. These outputs are high impedance when DE is low. Drive RE high and DE low to enter low-power shutdown mode. DE 4 2 3 HALF- DUPLEX MODE 1 MAX3089 2 3 FULL- DUPLEX MODE 1 2 — FULL-DUPLEX DEVICES — MAX3081 MAX3084 MAX3087 1 2 HALF- DUPLEX DEVICES — MAX3082 MAX3085 MAX3088 Receiver Output. When RE is low and if A - B ≥ -50mV, RO will be high; if A - B ≤ -200mV, RO will be low. RO 2 Receiver Output Enable. Drive RE low to enable RO; RO is high impedance when RE is high. Drive RE high and DE low to enter low-power shutdown mode. RE 3 FUNCTION NAME Half/Full-Duplex Selector Pin. Connect H/F to VCC for half-duplex mode; connect to GND or leave unconnected for full-duplex mode. H/F — MAX3080 MAX3083 MAX3086 Transmitter Phase. Connect TXP to GND, or leave floating for normal transmitter phase/polarity. Connect to VCC to invert the transmitter phase/polarity. — — — — 9 Y Noninverting Receiver Input and Noninverting Driver Output* 10 6 — 10 — Z Inverting Driver Output — — — — 10 Z Inverting Receiver Input and Inverting Driver Output* 11 7 — 11 — B Inverting Receiver Input — — — — 11 B Receiver Input Resistors* — — 7 — — B Inverting Receiver Input and Inverting Driver Output PIN |
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