All ProductsSemtechSemiconductorsIntegrated Circuits (ics)I/o Expanders Manufacturer Line SEMTECH SEMTECH Browse Categories Product Lines Semiconductors Integrated Circuits (ics) I/o Expanders Available Inventory Manufacturer Parts SX1501I087TRT I/O EXPANDER 4 I²C 400KHZ 20-QFN-UT (3X3) MFR. Name: Semtech SX1508BIULTRT I/O EXPANDER 8 I²C 400KHZ 20-QFN-UT (3X3) MFR. Name: Semtech