400 Mbps per channel — what it means for timing margin
At 400 Mbps the bit period is 2.5 ns. With typical LVDS output skew under 400 ps and receiver setup/hold windows around 500 ps, the SN65LVDS049PWRG4 leaves roughly 1.6 ns of timing margin per link — enough for a clean eye through a short backplane or ribbon cable without external re-drivers. The full-duplex architecture keeps the transmit and receive paths independent, so there are no bus-turnaround dead cycles. This matters for real-time control loops where latency must be deterministic.
2/2 driver/receiver count — channel assignment in a 16-TSSOP
Two independent full-duplex channels in the 16-TSSOP footprint mean one device handles two separate point-to-point links — for example, a clock and data lane, or a control and status link — without needing a second IC. The 0.173-inch body width fits a dense PCB layout, though the 0.65 mm pin pitch calls for careful routing under the package. Supply decoupling with a 0.1 µF ceramic within 2 mm of each VCC pin is the standard starting point for this class.