USB连接器
产品（2)
FUSB302MPX - USB Type-C Controller with PD | onsemi
The onsemi FUSB302MPX is a programmable USB Type-C controller with Power Delivery (PD) support, operating from a 2.8V to 5.5V supply and packaged in a 14-pin MLP (2.5x2.5 mm) package with exposed pad. It is a USB 3.1 companion USB interface IC designed to implement the USB Type-C connection management and Power Delivery protocol layers. A USB Type-C controller is a dedicated interface IC that manages the CC (Configuration Channel) lines of a USB Type-C connector. In the system hierarchy, it sits between the USB power path / USB 3.1 physical connector and the host microcontroller, handling attach detection, cable orientation, role swap, and PD message negotiation so the application processor does not need to bit-bang the PD protocol. Key features of the FUSB302MPX include full USB Type-C CC-line termination and detection, a full-featured PD PHY supporting BMC (Biphase Mark Coding) signaling on the CC line, an I2C slave interface for host control, and integrated VCONN support for powering electronically marked cables. The programmable architecture lets firmware implement sink, source, or dual-role power policies in software. Technically, the device integrates a PD transceiver with BMC encoding/decoding, comparator-based CC voltage monitoring for attach and orientation detection, and register-based configuration accessible over I2C at up to 400 kHz clock rates. The exposed-pad MLP-14 package provides low thermal impedance and short trace lengths, which benefits CC-line signal integrity at BMC data rates. RoHS-compliant, lead-free construction supports modern environmental requirements. Typical applications include USB Type-C power adapters and chargers, smartphone and tablet port controllers, notebook and dock power negotiation, power banks with PD sink input, and monitor or display-port alternate-mode designs. In each case the FUSB302MPX handles CC attach detection and PD contract negotiation while the system MCU manages the actual power conversion stage. A key design consideration: onsemi explicitly recommends the FUSB302BMPX for new designs; the FUSB302B family incorporates updates aligned to later USB-C specification releases, and per onsemi the B version is a drop-in replacement requiring no software optimization. This page adds value beyond the manufacturer datasheet by synthesizing distributor availability, drop-in alternative guidance, design notes, and comparison data in one engineer-oriented reference.
TS3USB221AQRSERQ1 - USB 2.0 1:2 Mux/Demux Switch | Texas Instruments
The Texas Instruments TS3USB221AQRSERQ1 is an ESD-protected, high-speed USB 2.0 (480-Mbps) 1:2 multiplexer/demultiplexer analog switch in a 10-pin UQFN (2.0 mm x 1.5 mm) package. It operates from a 2.3 V to 3.6 V supply, accepts I/O signals up to 5.5 V, and delivers a typical 1 GHz (900 MHz for the A-Q1 automotive grade) signal bandwidth, making it purpose-built for routing high-speed USB 2.0 differential pairs in space-constrained systems. A USB switch, also called a USB mux or DPDT analog switch, is a special-purpose analog switch IC that routes differential D+ and D- signal pairs from one USB host or controller to one of multiple downstream ports. In the system hierarchy, it sits between the USB PHY/controller and the USB connectors, complementing power management and ESD protection ICs in the connectivity signal chain. Such switches are essential when a hub or application processor has limited USB I/O ports that must be shared among several connectors. Key features of the TS3USB221AQRSERQ1 include an on-resistance of 6 ohm maximum with a typical delta rON of 0.2 ohm, low ON-state capacitance of 6 pF maximum (CIO), and 1.8 V-compatible control-pin inputs that simplify interfacing with low-voltage GPIO. When the OE pin disables the device, it enters a low-power mode drawing only 1 uA, and total power consumption is 30 uA maximum, which is critical for battery-powered designs. The integrated ESD protection is rated above 2000 V per the Human-Body Model (HBM), reducing the need for external transient-suppression diodes on the USB lines. The wide 1 GHz-class bandwidth allows USB 2.0 signals to pass with minimum edge and phase distortion, preserving eye-diagram margin at 480 Mbps. As an AEC-Q100 qualified device (TS3USB221A-Q1 family), it is validated for automotive ambient temperature ranges and supports automotive USB hubs and charging ports. Typical applications include automotive USB hubs and infotainment ports, cell phones and handsets, digital cameras, and notebooks where a hub or controller has limited USB I/Os that must be multiplexed between connectors. Design consideration: keep the switch close to the USB connector, match the differential pair layout through the device, and verify that the select (S) and enable (OE) logic levels are compatible with your controller GPIO; unused channel stubs should be minimized to preserve signal integrity. This page synthesizes distributor listings, cross-reference tooling, and drop-in alternative analysis not found in the manufacturer datasheet alone.