MAX481E Maxim Integrated Products, MAX481E Datasheet
MAX481E
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MAX481E Summary of contents
Page 1
... These transceivers draw as little as 120µA supply current when unloaded or when fully loaded with disabled drivers (see Selection Table ). Additionally, the MAX481E, MAX483E, and MAX487E have a low-current shutdown mode in which they consume only 0.5µA. All parts operate from a single +5V supply ...
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ESD-Protected, Slew-Rate-Limited, Low-Power, RS-485/RS-422 Transceivers ABSOLUTE MAXIMUM RATINGS Supply Voltage (V ) .............................................................12V CC – — – Control Input Voltage ( DE)...................-0. Driver Input Voltage (DI).............................-0. Driver Output Voltage ( ...
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... Supply Current in Shutdown I SHDN Driver Short-Circuit Current, I OSD1 V = High O Driver Short-Circuit Current, I OSD2 V = Low O Receiver Short-Circuit Current I OSR ESD Protection SWITCHING CHARACTERISTICS—MAX481E/MAX485E, MAX490E/MAX491E, MAX1487E ( ±5 unless otherwise noted.) (Notes MIN MAX PARAMETER SYMBOL t PLH Driver Input to Output t PHL Driver Output Skew to Output t ...
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... ESD-Protected, Slew-Rate-Limited, Low-Power, RS-485/RS-422 Transceivers SWITCHING CHARACTERISTICS—MAX481E/MAX485E, MAX490E/MAX491E, MAX1487E ( ±5 unless otherwise noted.) (Notes MIN MAX PARAMETER SYMBOL Driver Enable from Shutdown to t ZH(SHDN) Output High (MAX481E) Driver Enable from Shutdown to t ZL(SHDN) Output Low (MAX481E) Receiver Enable from Shutdown ...
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... Note 3: Supply current specification is valid for loaded transmitters when DE = 0V. Note 4: Applies to peak current. See Typical Operating Characteristics. Note 5: The MAX481E/MAX483E/MAX487E are put into shutdown by bringing less 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 ...
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... TEMPERATURE (°C) MAX481E/MAX485E/MAX490E/MAX491E SUPPLY CURRENT vs. TEMPERATURE 600 MAX481E/MAX485E 500 400 300 MAX485E MAX481E 200 MAX490E/MAX491E 100 MAX481E -60 -40 - 100 TEMPERATURE (°C) 6 _______________________________________________________________________________________ OUTPUT CURRENT vs. DRIVER OUTPUT LOW VOLTAGE 140 120 100 OUTPUT LOW VOLTAGE (V) MAX483E/MAX487E– ...
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... ESD-Protected, Slew-Rate-Limited, Low-Power, RS-485/RS-422 Transceivers ______________________________________________________________Pin Description PIN MAX481E/MAX483E MAX488E MAX485E/MAX487E MAX490E MAX1487E — 3 — — 5 — — — — — — — _______________________________________________________________________________________ NAME MAX489E MAX491E Receiver Output > 200mV, RO will be high < 200mV, RO will be low. – — – Receiver Output Enable enabled when ...
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... ESD-Protected, Slew-Rate-Limited, Low-Power, RS-485/RS-422 Transceivers TOP VIEW GND DIP/SO Figure 1. MAX481E/MAX483E/MAX485E/MAX487E/MAX1487E Pin Configuration and Typical Operating Circuit TOP VIEW GND DIP/SO Figure 2. MAX488E/MAX490E Pin Configuration and Typical Operating Circuit TOP VIEW N. N. GND GND 7 8 N.C. DIP/SO Figure 3. MAX489E/MAX491E Pin Configuration and Typical Operating Circuit ...
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... The MAX488E–MAX491E are full-duplex transceivers, while the MAX481E, MAX483E, MAX487E, and MAX1487E are half-duplex. In addition, driver- enable (DE) and receiver-enable (RE) pins are included on the MAX481E, MAX483E, MAX485E, MAX487E, MAX489E, MAX491E, and MAX1487E. When disabled, the driver and receiver outputs are high impedance. ±15kV ESD Protection ...
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ESD-Protected, Slew-Rate-Limited, Low-Power, RS-485/RS-422 Transceivers 1500 C D DISCHARGE CHARGE CURRENT LIMIT RESISTOR RESISTANCE HIGH C s STORAGE VOLTAGE 100pF CAPACITOR DC SOURCE Figure 4. Human Body ESD Test Model R 50M to 100M R 330 ...
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ESD-Protected, Slew-Rate-Limited, Low-Power, RS-485/RS-422 Transceivers DIFF Figure 10. Driver/Receiver Timing Test Circuit PLH PHL 1/2 ...
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... RS-485 drivers (32 transceivers maximum). Any combination of MAX487E/MAX1487E and other RS-485 transceivers with a total of 32 unit loads or less can be put on the bus. The MAX481E, MAX483E, MAX485E, and MAX488E–MAX491E have standard 12kΩ receiver input impedance. 12 ...
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... Typical propagation delays are shown in Figures 19–22 using Figure 18’s test circuit. The difference in receiver delay times, t typically under 13ns for the MAX481E, MAX485E, MAX490E, MAX491E, and MAX1487E, and is typically less than 100ns for the MAX483E and MAX487E– ...
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... ESD-Protected, Slew-Rate-Limited, Low-Power, RS-485/RS-422 Transceivers A 500mV/div B RO 5V/div 25ns/div Figure 19. MAX481E/MAX485E/MAX490E/MAX1487E Receiver t PHL A 500mV/div B RO 5V/div 200ns/div Figure 21. MAX483E/MAX487E–MAX489E Receiver s/div Figure 23. MAX481E/MAX485E/MAX490E/MAX491E/ MAX1487E System Differential Voltage at 110kHz Driving 4000ft of Cable 14 ______________________________________________________________________________________ B 500mV/div A 5V/div RO Figure 20. MAX481E/MAX485E/MAX490E/MAX491E/ MAX1487E Receiver t PLH ...
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... ESD-Protected, Slew-Rate-Limited, Low-Power, RS-485/RS-422 Transceivers 120 MAX481E MAX483E MAX485E MAX487E MAX1487E Figure 25. MAX481E/MAX483E/MAX485E/MAX487E/MAX1487E Typical Half-Duplex RS-485 Network A 120 120 NOTE: RE AND DE ON MAX489E/MAX491E ONLY. Figure 26. MAX488E–MAX491E Full-Duplex RS-485 Network ______________________________________________________________________________________ 120 120 120 MAX488E MAX489E MAX490E RE RO MAX491E 15 ...
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... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 16 __________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 (408) 737-7600 © 1996 Maxim Integrated Products ...