●The MAX3421EEHJ+T is a USB peripheral/host controller with SPI interface in 32 pin TQFP package. It contains digital logic and analogue circuitry necessary to implement a full speed USB peripheral or a full speed/low speed host compliant to USB specification rev 2.0. A built-in transceiver features ±15kV ESD protection and programmable USB connect and disconnect. An internal serial interface engine (SIE) handles low level USB protocol details such as error checking and bus retries. It operates using a register set accessed by an SPI interface that operates up to 26MHz. Any SPI master (microprocessor, ASIC, DSP etc.) can add USB peripheral or host functionality using the simple 3-wire or 4-wire SPI interface. It has a firmware/hardware control of an internal D+ pull-up resistor (peripheral mode) & D+/D- pull-down resistors (host mode). It is used in embedded systems, microprocessors and DSPs, custom USB devices, cameras, MP3 Players and instrumentation.
● Supply voltage range is 3V to 3.6V
● Operating temperature range from -40°C to 85°C
● Microprocessor independent USB solution, integrated USB transceiver
● Eight general purpose inputs and eight general purpose outputs
● Level translators and VL input allow independent system interface voltage
● Internal comparator detects VBUS for self powered peripheral applications
● ESD protection on D+, D- and VBCOMP
● Interrupt signal for general-purpose input pins, programmable edge polarity, intelligent USB SIE
● Automatically handles USB flow control and double buffering
● Handles low level USB signalling details
