As of my last update in September 2021, there is no specific component known as a "current steering diode." However, based on the terminology and concepts commonly used in electronics, I can speculate on what this might refer to.
In signal routing and electronic circuits, "current steering" often refers to a technique used to control the flow of current through different paths. This can be achieved using various components like transistors, operational amplifiers, or analog switches. However, there is no standard electronic component called a "current steering diode" that is widely recognized.
That said, the term might refer to a specialized diode used in specific applications or be a misnomer. If you encountered this term in a specific context or publication, I recommend referring to the source for detailed information on how they define and use the "current steering diode" in signal routing.
To better understand the concept and its application, more context or accurate terminology is needed. If you have additional details or a specific use case in mind, feel free to provide more information, and I'll do my best to assist you.