SP486ET-L/TR MaxLinear

SP486/SP487 Quad RS-485/RS-422 Line Drivers RS-485 or RS-422 Applications Quad Differential Line Drivers Tri-state Output Control 40ns Typical Driver Propagation Delays 5ns Skew -7V to +2V Common Mode Output Range 00A Supply Current Single +5V Supply Operation Pin Compatible with SN7572, SN75 74, L TC486 and LTC487 DESCRIPTION The SP486 and SP487 are low-power quad differential line drivers meeting RS-485 and RS- 422 standards. The SP486 features a common driver enable control the SP487 provides independent driver enable controls for each pair of drivers. Both feature tri-state outputs and a wide common-mode output range. SP486 and SP487 are available in a 6-pin SOIC package. Exar Corporation 48720 Kato Road, Fremont CA, 94538 50-668-70 7 www .exar.com SP486 487 00 06 6 ABSOLUTE MAXIMUM RATINGS These are stress ratings only and functional operation of the device at these ratings or any other above those indicated in the operation sections of the specifications below is not implied. Exposure to absolute maximum rating conditions for extended periods of time may affect reliability. V ........................................................................+7V CC Input Voltages Logic..........................-0.5V to (Vcc + 0.5V) Drivers.......................-0.5V to (Vcc + 0.5V) Driver Output Voltage.......................................+/-4V Input Currents Logic..............................................+/-25mA Driver.............................................+/-25mA Storage Temperature........................-65C to +150C Power Dissipation Plastic DIP......................................................375mW (derate 7mW/C above +70C) Small Outline..................................................375mW (derate 7mW/C above +70C) ELECTRICAL CHARACTERISTICS V = +5.0V +/-5% typicals at 25C T T T unless otherwise noted. CC MIN AMB MAX PARAMETERS MIN. TYP. MAX. UNITS CONDITIONS DC CHARACTERISTICS DIGITAL INPUTS DI, EN, EN, EN /EN , EN /EN 2 3 4 Voltage V 0.8 Volts IL Voltage V 2.0 Volts IH Input Current +/-2 A V = 0V to V IN CC DRIVER OUTPUTS Differential Voltage 5 Volts I = 0 unloaded O Differential Voltage 2 Volts R = 50 (RS-422) Figure 1 L Differential Voltage .5 2 5 Volts R = 27 (RS-485) Figure 1 L Change in Output Magnitude 0.2 Volts R = 27 or 50 Figure 1 L for Complementary Output state Common Mode Output Voltage 2.3 3 Volts R = 27 or 50 Figure 1 L Change in Common Mode 0.2 Volts R = 27 or 50 Figure 1 L Output Magnitude for Complementary Output state Driver Short Circuit Current V +/-250 mA -7V V +10V OH O Driver Short Circuit Current V +/-250 mA -7V V +10V OL O High Impedance Output +/-2 +/-200 A V = -7V to +0V O Current POWER REQUIREMENTS Supply Voltage 4.75 5.25 Volts Supply Current 0.5 0 A No load, output enabled Supply Current 0. 0 A No load, output disabled Exar Corporation 48720 Kato Road, Fremont CA, 94538 50-668-70 7 www .exar.com SP486 487 00 06 6 2