In an embodiment, set forth by way of example and not limitation, a data slicer includes a signal input node, a comparator having a first input of a first polarity, a second input of a second polarity which is the opposite of the first polarity, and an output coupled to a data out node, the first input of the comparator being coupled to the signal input node, and a multi-mode threshold generator including a first threshold generator and second threshold generator, whereby the first threshold generator is selected firstly and the second threshold generator is selected secondly.