25LC128
SX151 (2)SX15 (36)SX1 (125)

Semtech

SX1511BIULTRT

I/O Expander 8 SPI 20MHz 20-QFN-UT (3x3)
Semtech

SX1512BIULTRT

I/O Expander 16 SPI 20MHz 28-QFN-UT (4x4)

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