Code-hopping decoder with 4 outputs

Key-code Receiver 416 is a single IC solution for decrypting and decoding Radiometrix code-hopping transmitters. The device will retain the identities of up to 16 code-hopping transmitters, even when the power supply is removed. Specifically designed to be used in RF keyless remote control applications. Available in 18pin SO and DIL packages.Read code-hopping article...Read application note: Door Monitoring & Alarms...

Key Facts


Two way

Data sheet


  • Operating voltage (temperature): 4.5V-5.5V (-40°C to +85°C)
  • Draws <2mA without external load
  • 4 digital outputs (on/off)
  • Learn input pin (activate to store a transmitter identity)
  • Learn output pin (indication of a Learnt transmitter)
  • Mode select pin – choice of two output modes
  • Internal non-volatile memory for learning up to 16 different transmitters
  • Hop-code decryption ensures that only valid transmissions are acted upon
  • Manchester decoding at 1250bps (+25% -50%)
  • Suitable for use with Radiometrix FM radio-receiver modules e.g. RX2A
  • Internal clock – no external oscillator components needed
  • Internal supply monitoring (brown-out = self-reset)
  • Minimum external component requirement
  • Compatible with Radiometrix code-hopping transmitters, e.g. KTX2


  • Security and Alarm systems
  • Status reporting and monitoring systems
  • RF Remote control systems
  • Industrial controls
  • HVAC controls
  • Door entry systems
  • Simple On/Off switching

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