MAX1483 Maxim Integrated Products, MAX1483 Datasheet
MAX1483
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MAX1483 Summary of contents
Page 1
... The receiver input has a fail-safe feature that guarantees a logic-high output if the input is open circuit. The MAX1482 is full duplex and the MAX1483 is half duplex. Both parts have a ⁄ -unit-load input impedance 1 8 that guarantees up to 256 transceivers on the bus ...
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... Y and Z – — – DE, DI – — – DE, DI – — – DE, DI 12V MAX1482 0V 5.25V - 12V MAX1483 0V 5.25V -7V IN -7V ≤ V ≤ 12V -4mA 200mV 4mA -200mV O ID 0.4V ≤ V ≤ 2.4V O -7V ≤ V ≤ 12V CM MIN TYP MAX ...
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... Output Low Note 2: Applies to peak current. See Typical Operating Characteristics. Note 3: The MAX1482/MAX1483 are put into shutdown by bringing than 50ns, the parts are guaranteed not to enter shutdown. If the inputs are in this state for at least 600ns, the parts are guaranteed to have entered shutdown. See Low-Power Shutdown Mode section. ...
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... OUTPUT LOW VOLTAGE ( 100 -40 -20 DRIVER OUTPUT CURRENT vs. DIFFERENTIAL OUTPUT VOLTAGE 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 OUTPUT VOLTAGE (V) OUTPUT CURRENT vs. DRIVER OUTPUT HIGH VOLTAGE 120 100 OUTPUT LOW VOLTAGE (V) MAX1483 SUPPLY CURRENT vs. TEMPERATURE GND 100 TEMPERATURE (°C) ...
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... Receiver Output Enable. When RE is low enabled. When RE is high high impedance high and DE is low, the MAX1482/MAX1483 enter a low-power (0.1µA) shutdown state. Driver Output Enable. The driver outputs, A and B, (Y and Z for the MAX1482) are enabled by bringing DE high. When DE is low, the driver outputs are high DE impedance, and the devices can function as line receivers low ...
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Slew-Rate-Limited 8 RS-485 Transceivers _________________________________________________________________Test Circuits Figure 1. Driver DC Test Load DIFF Figure ...
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Waveforms PLH PHL 1 ( (Z) DIFF 90% 90% DIFF 0V 10 ...
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... X = Don't Care High-Z = High Impedance * for MAX1483 and is a Don't Care for MAX1482. Reduced EMI and Reflections The MAX1482/MAX1483 are slew-rate limited, minimiz- ing EMI and reducing reflections caused by improperly terminated cables. Figure 9 shows both the driver out- put waveform of a MAX1482/MAX1483 transmitting a 125kHz signal and the Fourier analysis of that signal ...
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A 500mV/div B RO 5V/div 500ns/div Figure 11. Receiver t PHL Low-Power Shutdown Mode A low-power shutdown mode is initiated by bringing RE high and DE low. The devices will not shut down unless both the driver and receiver ...
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... MAX1482 and MAX1483 are more tolerant of imperfect termination than standard RS-485 ICs). For isolated RS-485 applications, see the MAX253 and MAX1480 data sheets. ...
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A 120 120 NOTE: RE AND DE ON. Figure 15. MAX1482 Full-Duplex RS-485 Network MAX1482 A RO 120 120 D Y ...
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... Maxim reserves the right to change the circuitry and specifications without notice at any time. implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 12 __________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 (408) 737-7600 12 __________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 (408) 737-7600 12 __________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 (408) 737-7600 © ...