The  TX-2B/RX-2B  is  a  pair  of  CMOS  LSIs  designed  for  remote controlled car applications.  The TX-2B/RX-2B has five control keys for controlling the motions (i.e. forward, backward, rightward, leftward and the turbo function ) of the remote controlled car.
Features:
                            - Wide operating voltage range (VCC=1.5~5.0V)
- Low stand-by current
- Auto-power-off function for TX-2B
- Few external components are needed