The TC7SZ34FU,LJ(CT is a single-element, non-inverting buffer from Toshiba's TC7SZ series. At that temperature the 32 mA continuous drive should be derated per the junction-to-ambient curve in the datasheet.
Peer comparison — TC7SZ34FE,LJ(CT vs TC7SZ34FU,LJ(CT
The closest functional peer is TC7SZ34FE,LJ(CT — same logic type, same output drive (32 mA), same supply range, but its temperature range stops at 85 °C instead of 125 °C. The FU variant's extra 40 °C headroom matters only if the ambient near the part exceeds 85 °C.