SP3491CN-L/TR

SP3490 / SP3491 3.3V Low Power Full-Duplex RS-485 Transceivers with 10Mbps Data Rate Description FEATURES The SP3490 and SP3491 devices are 3.3V low power full-duplex Full-duplex RS-485 and RS-422 transceivers that meet the specifications of the RS-485 and RS-422 transceivers Operates from a single 3.3V supply serial protocols. These devices are pin-to-pin compatible with the Interoperable with 5.0V logic MaxLinear SP490 and SP491 devices as well as popular industry Driver/receiver tri-state enable lines standards. The SP3490 and SP3491 feature MaxLinears BiCMOS (SP3491) process, allowing low power operation without sacrificing performance. -7V to 12V common-mode input voltage The SP3490 and SP3491 meet the electrical specifications of the range RS-485 and RS-422 serial protocols up to 10Mbps under load. The 200mV receiver input sensitivity SP3491 is identical to the SP3490 with the addition of driver and Allows up to 32 transceivers on the serial reciveiver tri-state enable lines. bus Compatability with LTC490 and SN75179 (SP3490) Compatability with LTC491 and SN75180 (SP3491) Ordering Information - Back Page Block Diagrams 14 1 1 VCC V NC CC 13 NC 8 12 A A 2 2 R R R R 11 7 B B 3 REB 4 DE 6 10 Z Z 3 5 D D D D 5 9 6 Y Y GND 8 4 7 NC GND GND SP3490 SP3491 REV 1.0.3 1/12SP3490 / SP3491 Absolute Maximum Ratings Operating Conditions These are stress ratings only and functional operation of the Package Power Dissipation device at these ratings or any other above those indicated 8-pin NSOIC ................................................ 128.4C/W JA in the operation sections of the specifications below is not 14-pin NSOIC ................................................ 88.2C/W JA implied. Exposure to absolute maximum rating conditions for extended periods of time may affect reliability. V ...............................................................................6.0V CC ESD Rating Input Voltages Human Body Model (HBM) .......................................... 2kV Logic ..................................... -0.3V to 6.0V Drivers .................................. -0.3V to 6.0V Receivers ...........................................14V Output Voltages Drivers ...............................................14V Receivers .............................. -0.3V to 6.0V Storage Temperature .................................-65C to +150C Maximum Junction Temperature, T ..........................125C J Power Dissipation 8-pin NSOIC ............................................................600mW (derate 6.90mW/C above +70C) 14-pin NSOIC .........................................................700mW (derate 8.33mW/C above +70C) Electrical Characteristics T = T to T and V = 3.3V 5% unless otherwise noted. AMB MIN MAX CC PARAMETERS MIN. TYP. MAX. UNITS CONDITIONS SP3490 Driver DC Characteristics Differential output voltage Vcc V Unloaded R = Figure 1 Differential output voltage 2 Vcc V With load R = 50 (RS-422) Figure 1 Differential output voltage 1.5 Vcc V With load R = 27 (RS-485) Figure 1 Change in magnitude of driver differential output voltage for 0.2 V R = 27 or R = 50 Figure 1 complimentary states Driver common-mode output voltage 3 V R = 27 or R = 50 Figure 1 Input high voltage 2.0 V Input low voltage 0.8 V Input current 10 A Driver short circuit current 250 mA -7V V 12V Figure 8 O V = HIGH OUT Driver short circuit current 250 mA -7V V 12V Figure 8 O V = LOW OUT SP3490 Driver AC Characteristics Maximum data rate 10 Mbps Driver input to output, t 20 40 60 ns R = 27, Figures 2 & 9 PLH Driver input to output, t 20 40 60 ns R = 27, Figures 2 & 9 PHL REV 1.0.3 2/12