The ADM3064E features a 1/4 unit load input impedance that allows up to 128 transceivers on a bus. This device operates at a low 500kbps data rate suitable for operation over long cable runs. Excessive power dissipation caused by bus contention or by output shorting is prevented by a thermal shutdown circuit. If a significant temperature increase is detected in the internal driver circuitry during fault conditions, this feature forces the driver output into a high impedance state. The ADM3064E Transceiver guarantees a logic high receiver output when the receiver inputs are shorted, open, or connected to a terminated transmission line with all drivers disabled.