Схема включения
 
                                  MC1488

                       QUAD MDTL LINE DRIVER RS-232C

     The MC1488  is  a  monolitic  quad  line  driver  design  to interface
terminal equipment with data communications equipment in  conformance  with
specifications of EIA Standard RS-232C.
 Features:
     - Current Limited Output +-10mA typ
     - Power-Off Sourse Impedance 300 Ohms min
     - Simple Slew Rate Control with External Capacitor
     - Flexible Operating Supply Range
     - Compatible with All Motorola MDTL and MTTL Logic Families

              MAXIMUM RATING (Ta=25C,unless otherwise noted)
     Power Supply Voltage                         Vcc=+15Vdc
                                                  Vee=-15Vdc
     Input Voltage Range                          -15