The CS61880 makes use of ultra low power matched impedance transmitters and receivers to reduce power beyond that achieved by traditional driver designs. By achieving a more precise line match, this technique also provides superior return loss characteristics. Additionally, the internal line matching circuitry reduces the external component count. All transmitters have controls for independent power down and High-Z. Each receiver provides reliable data recovery with over 12 dB of cable attenuation. The receiver also incorporates LOS detection compliant to the most recent specifications.