SP488CT-L MaxLinear

SP488/489 Quad RS-485/RS-422 Line Receivers n RS-485 or RS-422 Applications n Quad Differential Line Receivers n Tristate Output Control n 120ns Typical Receiver Propagation Delays n 7V to +12V Common Mode Input Range n 1mA Supply Current n Single +5V Supply Operation n Pin Compatible with SN75173, SN75175, LTC488 and LTC489 Now available in Lead Free DESCRIPTION The SP488 and SP489 are lowpower quad differential line receivers meeting RS-485 and RS-422 standards. The SP488 features a common receiver enable control the SP489 provides independent receiver enable controls for each pair of receivers. Both feature tristate outputs and wide common mode input range. The receivers have a failsafe feature which forces a logic 1 output when receiver inputs are left floating. Both are available in 16pin plastic DIP and SOIC packages. RI B 1 16 V RI B 1 16 V 1 CC 1 CC SP489 SP488 RI A 2 15 RI B 1 1 4 RI A 2 15 RI B 1 1 4 RO 3 4 14 RI A RO 3 14 RI A 1 4 4 1 4 EN /EN 4 13 RO EN 4 13 RO 1 2 4 4 RO 5 12 EN /EN 2 3 4 RO 5 12 EN 2 2 RI A 6 11 RO RI A 6 2 11 RO 2 3 2 3 3 RI B 7 10 RI A 3 RI B 7 10 RI A 2 3 2 3 GND 8 9 RI B GND 8 9 RI B 3 3 SP488/489 Quad RS-485/RS-422 Line Receivers Copyright 2000 Sipex Corporation 1ABSOLUTE MAXIMUM RATINGS These are stress ratings only and functional operation of the device at these 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 (V +0.5V) CC Receiver ............................................................................... 14V Receiver Output Voltage ................................. 0.5V to (V +0.5V) CC Input Currents Logic .................................................................................. 25mA Storage Temperature ............................................ 65C to +150C Power Dissipation Plastic DIP ........................................................................ 375mW (derate 7mW/C above +70C) Small Outline .................................................................... 375mW (derate 7mW/C above +70C) Lead Temperature (soldering, 10 sec) ................................... 300C SPECIFICATIONS V = 5V5% typicals at 25C T T T unless otherwise noted. CC MIN A MAX PARAMETER MIN. TYP. MAX. UNIT CONDITIONS DC CHARACTERISTICS Digital Inputs EN, EN, EN /EN , EN /EN 1 2 3 4 Voltage V 0.8 Volts IL V 2.0 Volts IH Input Current 2 A 0V V V IN CC RECEIVER INPUTS Input Resistance 12 kOhm 7V V 12V CM Differential Input Threshold 0.2 +0.2 Volts 7V V 12V CM Input Current (A, B) V = 0V or 5.25V I CC IN2 +1.0 mA V = +12V IN 0.8 mA V = 7V IN Maximum Data Rate 10 Mbps RECEIVER OUTPUTS Output Voltage V 3.5 V I = 4mA V = +0.2V OH O ID V 0.4 V I = +4mA V = 0.2V OL O ID High Impedance Output Current 1 A V = maximum 0.4V V 2.4V CC O POWER REQUIREMENTS Supply Voltage 4.75 5.00 5.25 Volts Supply Current 1 5 mA No load ENVIRONMENTAL AND MECHANICAL Operating Temperature C 0 +70 C E 40 +85 C Storage Temperature 65 +150 C Package S 16pin Plastic DIP T 16pin SOIC SP488/489 Quad RS-485/RS-422 Line Receivers Copyright 2000 Sipex Corporation 2