When you say 'symbology' do you mean the min/max values of the raster? Or the color ramp? The color ramps should be available to be selected, but there is not an import process from TIN to raster. In the attached screenshot, I selected 'Elevation # 1' for each TIN and raster.
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If the values do not match up then the symbology will never look the same. I chose a coarse cell size for a quick export, which has contributed to the generalized look of the raster. The TIN is more angular but the symbology is similar.