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XR3178EID Datasheet(PDF) 4 Page - Exar Corporation |
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XR3178EID Datasheet(HTML) 4 Page - Exar Corporation |
4 / 24 page ABSOLUTE MAXIMUM RATINGS These are stress ratings only and functional operation of the device at these ratings or any other above those indicated in the operation sections to the specifications below is not implied. Exposure to absolute maximum rating conditions for extended periods of time may affect reliability and cause permanent damage to the device. VCC +6.0V Input Voltage at control pins (RE, DE and DI) -0.3V to (VCC + 0.3V) Driver Output Voltage (A, B, Y and Z) -8V to +13V Receiver Output Voltage (RO) -0.3V to (VCC + 0.3V) Receiver Input Voltage (A and B) -8V to +13V Storage Temperature Range -65°C to + 150°C Lead Temperature (soldering, 10s) +300°C Package Power Dissipation Maximum Junction Temperature 150°C 8-Pin SO θ JA = 128.4°C/W 14-Pin SO θ JA = 86°C/W XR3170E-3178E 4 3.3V HIGH SPEED RS-485/RS-422 TRANSCEIVERS WITH 1/8th UNIT LOAD REV. 1.0.0 CAUTION: ESD (Electrostatic Discharge) sensitive device. Permanent damage may occur on unconnected devices subject to high energy electrostatic fields. Unused devices must be stored in conductive foam or shunts. Personnel should be properly grounded prior to handling this device. The protective foam should be discharged to the destination socket before devices are removed. ELECTRICAL CHARACTERISTICS UNLESS OTHERWISE NOTED: VCC = +3.0V TO +3.6V WITH TA FROM -40 OC TO +85OC. TYPICAL VALUES ARE AT VCC = +3.3V AND 25 OC. SYMBOL PARAMETERS MIN. TYP. MAX. UNITS CONDITIONS DRIVER DC CHARACTERISTICS VOD Differential Driver Output Vcc V No Load 2.0 2.65 RL = 100Ω (RS-422), Figure 3 1.7 2.35 RL = 54Ω (RS-485), Figure 3 1.7 2.35 VCM = -7V, Figure 4 1.7 2.35 VCM = +12V, Figure 4 ∆V OD Change in Magnitude of Differential Output -0.20 0.20 V RL = 100Ω (RS-422), Figure 3, See Note 1 -0.20 0.20 RL = 54Ω (RS-485), Figure 3, See Note 1 -0.20 0.20 VCM = -7V, Figure 4, See Note 1 -0.20 0.20 VCM = +12V, Figure 4, See Note 1 VOC Driver Common Mode Output Voltage steady state 3.0 V Figure 3 |
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