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MAX491CSD Datasheet(PDF) 2 Page - Maxim Integrated Products |
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MAX491CSD Datasheet(HTML) 2 Page - Maxim Integrated Products |
2 / 19 page Low-Power, Slew-Rate-Limited RS-485/RS-422 Transceivers 2 _______________________________________________________________________________________ ABSOLUTE MAXIMUM RATINGS Supply Voltage (VCC) .............................................................12V Control Input Voltage (RE, DE)...................-0.5V to (VCC + 0.5V) Driver Input Voltage (DI).............................-0.5V to (VCC + 0.5V) Driver Output Voltage (A, B)...................................-8V to +12.5V Receiver Input Voltage (A, B).................................-8V to +12.5V Receiver Output Voltage (RO).....................-0.5V to (VCC +0.5V) Continuous Power Dissipation (TA = +70°C) 8-Pin Plastic DIP (derate 9.09mW/°C above +70°C) ....727mW 14-Pin Plastic DIP (derate 10.00mW/°C above +70°C) ..800mW 8-Pin SO (derate 5.88mW/°C above +70°C).................471mW 14-Pin SO (derate 8.33mW/°C above +70°C)...............667mW 8-Pin µMAX (derate 4.1mW/°C above +70°C) ..............830mW 8-Pin CERDIP (derate 8.00mW/°C above +70°C).........640mW 14-Pin CERDIP (derate 9.09mW/°C above +70°C).......727mW Operating Temperature Ranges MAX4_ _C_ _/MAX1487C_ A ...............................0°C to +70°C MAX4_ _E_ _/MAX1487E_ A .............................-40°C to +85°C MAX4_ _MJ_/MAX1487MJA ...........................-55°C to +125°C Storage Temperature Range .............................-65°C to +160°C Lead Temperature (soldering, 10sec) .............................+300°C DC ELECTRICAL CHARACTERISTICS (VCC = 5V ±5%, TA = TMIN to TMAX, unless otherwise noted.) (Notes 1, 2) Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. V VIN = -7V VIN = 12V VIN = -7V VIN = 12V Input Current (A, B) IIN2 VTH kΩ 48 -7V ≤ VCM ≤ 12V, MAX487/MAX1487 RIN Receiver Input Resistance -7V ≤ VCM ≤ 12V, all devices except MAX487/MAX1487 R = 27Ω (RS-485), Figure 4 0.4V ≤ VO ≤ 2.4V R = 50Ω (RS-422) IO = 4mA, VID = -200mV IO = -4mA, VID = 200mV VCM = 0V -7V ≤ VCM ≤ 12V DE, DI, RE DE, DI, RE MAX487/MAX1487, DE = 0V, VCC = 0V or 5.25V DE, DI, RE R = 27Ω or 50Ω, Figure 4 R = 27Ω or 50Ω, Figure 4 R = 27Ω or 50Ω, Figure 4 DE = 0V; VCC = 0V or 5.25V, all devices except MAX487/MAX1487 CONDITIONS kΩ 12 µA ±1 IOZR Three-State (high impedance) Output Current at Receiver V 0.4 VOL Receiver Output Low Voltage 3.5 VOH Receiver Output High Voltage mV 70 ∆VTH Receiver Input Hysteresis V -0.2 0.2 Receiver Differential Threshold Voltage -0.2 mA 0.25 mA -0.8 1.0 1.5 5 VOD2 Differential Driver Output (with load) V 2 V 5 VOD1 Differential Driver Output (no load) µA ±2 IIN1 Input Current V 0.8 VIL Input Low Voltage V 2.0 VIH Input High Voltage V 0.2 ∆VOD Change in Magnitude of Driver Common-Mode Output Voltage for Complementary Output States V 0.2 ∆VOD Change in Magnitude of Driver Differential Output Voltage for Complementary Output States V 3 VOC Driver Common-Mode Output Voltage UNITS MIN TYP MAX SYMBOL PARAMETER |
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