PI3EQX32904Q

The PI3EQX32904Q is an automotive four-channel linear ReDriver from Diodes, specified to 32 Gbps per channel for PCIe 5.0, SAS4 and CXL links - it is a PCIe-class redriver, not a USB4 part. Each channel offers individually programmable equalisation, output swing and flat gain under I2C control, so trace loss on long board runs or through connectors can be compensated per lane. The 100 ohm differential CML inputs and outputs, automatic receiver detection and protocol transparency mean the device needs no link training and behaves identically regardless of data rate or encoding. It runs from a 3.3 V supply over -40 C to +85 C, drops below 5 mW in deep standby, is AEC-Q100 qualified and comes in a W-QFN3063-46 package. Selection advice: a linear redriver extends channel reach without the latency and power of a retimer, but it passes jitter through - if your link budget fails on jitter rather than loss, evaluate a retimer architecture instead of adding a second redriver stage. Parameters verified against Diodes Incorporated documentation.