MAX487EEPA+ Maxim, MAX487EEPA+ Datasheet
MAX487EEPA+
Specifications of MAX487EEPA+
Related parts for MAX487EEPA+
MAX487EEPA+ Summary of contents
Page 1
... Level Translators Transceivers for EMI-Sensitive Applications Industrial-Control Local Area Networks ________________________________________________________________ Maxim Integrated Products For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. Next-Generation Device Features ♦ For Fault-Tolerant Applications: MAX3430: ±80V Fault-Protected, Fail-Safe, 1/4- Unit Load, +3.3V, RS-485 Transceiver MAX3080– ...
Page 2
... Plastic DIP (derate 9.09mW/°C above +70°C) ....727mW 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 ...
Page 3
... PLH PHL t SKD Receiver Skew Receiver Enable to Output Low t ZL Receiver Enable to Output High t ZH Receiver Disable Time from Low t LZ Receiver Disable Time from High t HZ Maximum Data Rate f MAX Time to Shutdown t SHDN _______________________________________________________________________________________ CONDITIONS MAX488E/MAX489E, – — – DE, DI MAX490E/MAX491E, – ...
Page 4
... Receiver Enable to Output Low t ZL Receiver Enable to Output High t ZH Receiver Disable Time from Low t LZ Receiver Disable Time from High t HZ Maximum Data Rate f MAX Time to Shutdown t SHDN Driver Enable from Shutdown to t ZH(SHDN) Output High Driver Enable from Shutdown to t ...
Page 5
ESD-Protected, Slew-Rate-Limited, Low-Power, RS-485/RS-422 Transceivers NOTES FOR ELECTRICAL/SWITCHING CHARACTERISTICS Note 1: All currents into device pins are positive; all currents out of device pins are negative. All voltages are referenced to device ground unless otherwise specified. Note 2: All ...
Page 6
ESD-Protected, Slew-Rate-Limited, Low-Power, RS-485/RS-422 Transceivers ____________________________Typical Operating Characteristics (continued 5V +25°C, unless otherwise noted DRIVER DIFFERENTIAL OUTPUT VOLTAGE vs. TEMPERATURE 2 2.2 2.1 2.0 1.9 1.8 1.7 1.6 1.5 -60 ...
Page 7
ESD-Protected, Slew-Rate-Limited, Low-Power, RS-485/RS-422 Transceivers ______________________________________________________________Pin Description PIN MAX481E/MAX483E MAX488E MAX485E/MAX487E MAX490E MAX1487E — 3 — — 5 — — — — — — — ...
Page 8
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 V ...
Page 9
... IEC1000-4-2 air-gap discharge (for- merly IEC801-2). ESD performance depends on a variety of conditions. Contact Maxim for a reliability report that documents test set-up, test methodology, and test results. Figure 4 shows the Human Body Model, and Figure 5 shows the current waveform it generates when dis- charged into a low impedance ...
Page 10
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 ...
Page 11
ESD-Protected, Slew-Rate-Limited, Low-Power, RS-485/RS-422 Transceivers DIFF Figure 10. Driver/Receiver Timing Test Circuit PLH PHL 1/2 ...
Page 12
... MAX487E and MAX1487E allows up to 128 transceivers on a bus, compared to the 1-unit load (12kΩ input impedance) of standard 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– ...
Page 13
ESD-Protected, Slew-Rate-Limited, Low-Power, RS-485/RS-422 Transceivers 100pF Z B TTL < 6ns 100pF Figure 18. Receiver Propagation Delay Test Circuit It takes the drivers and receivers longer to ...
Page 14
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. ...
Page 15
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 ...
Page 16
... Chip Information TRANSISTOR COUNT: 295 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 © ...