Retimer function and signal integrity role
The SN75DP149RSBT is a retimer — it regenerates the incoming video signal's clock and data edges, cleaning up jitter before the signal reaches the downstream sink. This matters on longer PCB traces or cables where the DVI or HDMI eye pattern would otherwise close beyond the receiver's tolerance. It operates under the DVI 1.0 and HDMI 1.4a standards, meaning it supports single-link TMDS clock rates up to 165 MHz and the associated data rates for 1080p and lower resolutions at standard color depth. The I²C control interface allows the host processor to configure equalization, output swing, and pre-emphasis — adjustments that compensate for board-specific loss without a hardware spin.
Supply rail and board integration
Supplier device package is the 40-WQFN (5x5) — the 0.4 mm pitch and 5 mm body fit a standard QFN land pattern.
Lifecycle and compliance posture
For a BOM that already carries this line item, the supply risk is low; for a new design, the active status and single-source footprint (no pin-compatible second source in the same package) mean a quoted-to-order RFQ is the standard procurement path.