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MAX14770E Datasheet(PDF) 11 Page - Maxim Integrated Products |
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MAX14770E Datasheet(HTML) 11 Page - Maxim Integrated Products |
11 / 16 page High-ESD Profibus RS-485 Transceiver ______________________________________________________________________________________ 11 Pin Configurations Pin Description PIN NAME FUNCTION 1 RO Receiver Output. When RE is low and (A - B) R -50mV, RO is high; if (A - B) P -200mV, RO is low. 2 RE Receiver 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. 3 DE Driver Enable. Drive DE high to enable driver output. The driver outputs are high impedance when DE is low. Drive RE high and DE low to enter low-power shutdown mode. 4 DI Driver Input. With DE high, a low on DI forces the noninverting output, A, low and the inverting out- put, B, high. Similarly, a high on DI forces the noninverting output, A, high and the inverting output, B, low. 5 GND Ground 6 A Noninverting Receiver Input and Noninverting Driver Output 7 B Inverting Receiver Input and Inverting Driver Output 8 VCC Positive Supply. Bypass VCC to GND with a 0.1FF ceramic capacitor as close as possible to the device. — EP Exposed Pad (TDFN Only). Connect EP to GND. MAX14770E + TOP VIEW A GND 8 7 VCC B SO 6 5 DE DI 1 2 RO 3 4 RE 1 + 4 3 8 6 5 VCC MAX14770E 2 7 B A GND DI RO DE TDFN (3mm × 3mm) *CONNECT EXPOSED PAD TO GND. *EP RE |
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