AS-i bus interface in a 20-SOIC footprint
The SAP5SD-A-G1-R is a specialized interface IC from Renesas Electronics designed for Actuator Sensor Interface (AS-i) networks, a fieldbus standard used to connect binary sensors and actuators to a controller over a single two-wire cable. It operates from a 16 V to 34 V supply rail, which covers the standard AS-i bus voltage range including the 30 V nominal and the 24 V industrial supply tolerance.
Supply voltage tolerance and bus-power compatibility
The 16-34 V supply range covers the AS-i bus power profile: the nominal 30 VDC bus, the 24 V industrial rail if stepped up, and the ripple or transient peaks that occur on long cable runs. The lower 16 V threshold means the IC stays operational even when the bus voltage sags under heavy load or during a short-circuit recovery — a common edge case on AS-i segments with many slave nodes drawing the 60 mA per node limit.
Sourcing and lifecycle for the BOM line
Renesas lists the SAP5SD-A-G1-R as Active with ROHS3 compliance.