What this DisplayPort reDriver does on the bench
The SN75DP119RGYR is a 2-channel DisplayPort buffer and reDriver from Texas Instruments, built to clean up and re-transmit a DisplayPort signal that has degraded across a long cable or through a passive board trace. It handles data rates up to 2.7 Gbps per lane, which covers the full DisplayPort 1.1a and the high-bit-rate (HBR) mode of 1.2 — the 5.4 Gbps HBR2 rate is beyond this part's ceiling. The part applies input equalization and output pre-emphasis, meaning it can compensate for the skin-effect and dielectric losses that round off the signal edges over a metre or more of cable. The 325 ps typical propagation delay is the price you pay for that reconditioning — it shifts the entire signal train by about one bit period at 2.7 Gbps, which the sink's CDR (clock-data recovery) absorbs without trouble.
Active production and compliance
No AEC-Q or military qualification; this is a commercial/industrial-grade part.