USB 2.0 controller with SPI host interface
The MAX3421EEHJ+T is a USB 2.0 controller IC from Maxim Integrated that handles both host and peripheral roles through a SPI interface. It translates SPI commands into USB transactions, so any microcontroller with a spare SPI port can act as a USB host or device without needing built-in USB MAC/PHY logic. The 32-TQFP (5x5) package keeps the footprint small for space-constrained designs like portable instruments, embedded terminals, or industrial panel interfaces.
Lifecycle and compliance
This part carries an Active lifecycle status and is ROHS3 compliant. No end-of-life notice or last-time-buy window is in effect, so it can be specified into new designs without near-term obsolescence risk.
