+------------------------+
   + SN754410 specification +
   +------------------------+
 

                (Top View)
                   __ __
                  |  *  |
            1,2EN=|     |=VCC1
               1A=|     |=4A
               1Y=|     |=4Y
   HEAT SINK AND =|     |= HEAT SINK AND
          GROUND =|     |= GROUND
               2Y=|     |=3Y
               2A=|     |=3A
             VCC2=|     |=3,4EN
                  |_____| 
 
 A   - Driver input 
 Y   - Driver output
 vcc1- 5V supply for internal logic translation
 vcc2- Power VCC for drivers 4.5V to 36V