The NXP PCA9617ATPZ is a single-channel I²C buffer and re-driver. It accepts a 2-wire bus input and drives a 2-wire bus output at data rates up to 1 MHz. The dual supply range — 0.8 V to 5.5 V on one side and 2.2 V to 5.5 V on the other — allows the part to bridge buses operating at different logic levels. Housed in an 8-WFDFN with exposed pad (supplier package 8-HWSON, 2x3 mm), it is a surface-mount device rated for industrial temperature range from -40°C to 85°C.
The quiescent supply current is 50 µA typical, which is low enough that the buffer adds negligible load to the power rail in battery-powered or always-on I²C segments. Input capacitance is 7 pF per pin, so the buffer itself does not consume a meaningful portion of the bus's total capacitive budget — important when cascading multiple buffers on a long multidrop bus.
ROHS3 compliant.