The MAX33076-9E is a family of robust quad channel RS-485/422 receivers with high CMR (common mode range), high fault protection, and high ESD for harsh electrical environments. This family operates from a supply range of +3.3V or +5.0V.
These devices feature a high CMR of ±25V, which helps in reception of messages when the ground planes between two nodes have large differences or large external interference from motors or other electrical noise sources. These parts have extended fault protection of ±65V where the data lines are protected from accidental shorts to local power supplies. A high ESD HBM (human body model) of ±25kV also protects the data lines from ESD strikes either during production or in the field.
The MAX33076E-79E have true fail circuitry where the receiver output is placed in a high state when open, shorted, or connected to a terminated transmission line with all drivers disabled. For part numbers MAX33076/7E, the G and Ḡ pins configure for active high and active low respectively, as well as enable or disable the outputs. They are pin compatible with MAX3095-96. For part numbers MAX33078/9E, the EN12 and EN34 pins enable Y1/Y2 and Y3/Y4 outputs respectively, and are pin compatible with MAX3093-94.
The entire family is encased in a 16-pin SOIC and QSOP package and rated over the -40°C to +125°C temperature range.