ADM3485

The ADM3483/ADM3485/ADM3488/ADM3490 are low power, differential line transceivers designed to operate using a single 3.3 V power supply. Low power consumption, coupled with a shutdown mode, makes the ADM3483/ADM3485/ADM3488/ ADM3490 ideal for power-sensitive applications. ADM3483/ ADM3485/ADM3488/ADM3490 are suitable for communica-tion on multipoint bus transmission lines.

The ADM3488/ADM3490 feature full duplex communication, while the ADM3483/ADM3485 are designed for half duplex communication.

The ADM3483/ADM3488 feature slew rate limited drivers that minimize EMI and reduce reflections caused by improperly terminated cables, allowing error-free data transmission at data rates up to 250 kbps.

The ADM3485/ADM3490 transmit at up to 10 Mbps.

The receiver input impedance is 12 k, allowing up to 32 transceivers to be connected on the bus. A thermal shutdown circuit prevents excessive power dissipation caused by bus contention or by output shorting. If a significant temperature increase is detected in the internal driver circuitry during fault conditions, then the thermal shutdown circuit forces the driver output into a high impedance state. If the inputs are uncon-nected (floating) then the receiver contains a fail-safe feature that results in a logic high output state. All parts are fully specified over the commercial and industrial temperature ranges and are available in an 8-lead SOIC_N package.