The MAX3353E and MAX3355E USB on the go (OTG) power plus support ICs enter the market as the first devices to make dual-role transceivers USB OTG compliant. Designed to replace a number of discrete components, the device’s primary applications
The MAX3353E and MAX3355E USB on the go (OTG) power plus support ICs enter the market as the first devices to make dual-role transceivers USB OTG compliant. Designed to replace a number of discrete components, the device’s primary applications will be portable products - cell phones, digital cameras, etc. Both chips provide the 5V VBUS power, and support for dual-role controllers. Internal charge pumps create a VBUS output from an input voltage between 2.6V and 5.5V. Internal comparators detect VBUS levels for host-negotiation and session-request protocols. The MAX3353E stores this information in registers that are accessible via an I2C interface, while the MAX3355E outputs information on the status-1 and status-2 pins. The MAX3353E also includes the pull-up and pull-down resistors required by USB. Both devices provide ID detection for default host and peripheral assignment. Another feature of both is a shut-down mode current of 0.4 µA. Available in UCSPs and TSSOPs, prices start at $1.21 each/1,000. MAXIM INTEGRATED PRODUCTS, Sunnyvale, CA. (800) 998-8800.
