RJK0204DPA-00J53 is a multi-function digital integrated circuit manufactured by the Japanese electronics giant Renesas. It is a 4-channel low-power digital isolator integrated circuit designed to provide isolation between digital signals and ground or power supplies, as required in automotive and industrial systems. The device provides both galvanic isolation and noise immunity from transient or continuous high frequency noise using pulse transformer technology. It provides low on-resistance and low power consumption by operating off of a 5.5V power supply for a variety of circuit configurations. In addition to the isolator, the device features an integrated protection diode and open drain output stage to protect it against electrical overstress and to ensure proper signal operation.