To recommend a replacement for the DAT1 component, I'll need more specific information about what you're looking for in a replacement. Are there certain properties or functions of the DAT1 component that you want to be maintained in the replacement? Do you need it to be compatible with certain other components in the circuit?

Generally, DAT1 is a data bit line pin for an SD card interface, used in data transfer operations. So you need to replace it with a similar interface pin of either another TF card reader or a related electronic device that suits your circuit requirements. However, without more specific information, it's hard to suggest a direct replacement.