![]() As speeds increase the blanking time will become the limiting factor. This includes the cable, connectors, circuit board traces, etc. ![]() The blanking time has to account for the worst-case scenario. As the speeds increase this blanking time becomes significant. This spread requires that there is a blanking time between when the bits are asserted and when the bits are read.Īt slow speeds this blanking time is irrelevant. ![]() There is a spread between the fastest bit and the slowest bit. Furthermore, those bits do not arrive at the same time. When the transmitter places a set of 8 bits on 8 lines it takes those bits a non zero amount of time to arrive at the receiver. The Achilles heel of parallel is the wait time between bytes. In reality, there are other factors that affect parallel transfers. At face value sending 8 bits at once seems faster than sending just one at a time.
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