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Serial Bus Interface for automotive audio controller

The CCA1224 is a bus interface IC with driver and receiver function. The bus driver provides dual data inputs which can also be combined to support a single input along with a differential current bus output. The receiver uses the driver outputs as input and delivers the signal to an open collector output.  The chip is automotive qualified and is available in a SOP8 package.  It is functional and pin compatible to the obsolete part no. HA12240.

Typical applications are automotive audio equipment controllers. 







  • Current drive output typ. 3.8 mA
  • Hysteresis comparator for receiver  
  • Open collector receiver output 
  • Operating VCC 5 V ±0.5 V
  • Standby function (IVCC < 1 μA)  
  • ESD protection 2kV on all IO pins 
  • SOP8 package 3.9x4.9mm
  • Automotive qualified (AECQ100)


  • Two or combined data inputs (3.3 V and 5.0 V)
  • Wide receiver common mode input range of 0 to 5V
  • Hysteresis input comparator
  • Drop in replacement for HA12240


  • Automotive audio equipment controller
  • General audio controller


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