Use this electronics calculation for a first-pass component, converter, signal, motor, or sensor estimate when the stated operating conditions and units match the device data.

Aggregate payload rate (Gb/s)

Required number input.

Active lanes

Required integer input.

Payload efficiency

Required number input.

Calculate required per-lane serial rate from aggregate payload rate, active lane count, and specified usable payload efficiency. The tool evaluates the supplied inputs together and returns the named outputs below; it does not infer omitted operating conditions or change the units shown.^[1]

Required rate per lane (Gb/s)

The resulting required rate per lane returned as a number.

• Signal-integrity estimates depend on edge rate, channel loss, impedance discontinuities, termination, encoding, equalization, clock recovery, jitter decomposition, crosstalk, connectors, vias, and receiver masks. Aggregate budgets must use compatible statistical or worst-case conventions.
• Use finite inputs in the displayed units and preserve more precision than the final presentation requires. Independently verify safety-critical, financial, compliance, or production decisions.

Check the result against the current datasheet and worst-case operating corners, then verify the circuit or measurement with simulation and bench testing where failure matters.

• MOST Bus Bandwidth

  Estimate usable MOST payload bandwidth from gross link bit rate and measured or specified payload-efficiency fraction.

• PCIe Link Bandwidth

  Estimate one-direction PCIe payload bandwidth from transfer rate, lane count, and the selected generation's encoding efficiency; excludes packet overhead.

• HDMI TMDS Lane Rate

  Estimate legacy HDMI TMDS serial bit rate per data lane from pixel clock and channel bit depth; HDMI 2.1 FRL uses a different link model.