Interface ICs
Subcategories
Products (3,400+)
TUSB2551PW - USB 2.0 Half Transceiver | Texas Instruments
Texas Instruments TUSB2551PW is a single USB 2.0 half-rate transceiver supporting full-speed operation up to 12 Mbit/s and low-speed operation up to 1.5 Mbit/s in a 14-pin TSSOP package. The device operates from a 1.65 V to 3.6 V supply, making it suitable for low-voltage USB connectivity and embedded systems. Its integrated transceiver architecture supports bidirectional USB data signaling while reducing the external circuitry required for a host, device, or interface application. A USB transceiver is an interface IC that converts digital controller signals into USB-compatible physical-layer signals and receives the corresponding bus signals from a USB connection. The TUSB2551 belongs to the USB interface transceiver hierarchy, alongside USB interface controllers, USB hubs, and USB power-management devices. Unlike a USB controller, it does not implement protocol or enumerate bus devices; it provides the physical-layer path between a USB-capable controller and a connector or cable. The TUSB2551 supports both full-speed and low-speed USB 2.0 operation. Texas Instruments identifies superior edge-rate control as a means of producing crisper eye diagrams, which can simplify USB compliance testing. Dual-supply operation allows the digital and analog portions of the device to use separate supply rails. The 1.65 V to 3.6 V operating range supports common 1.8 V and 3.3 V system environments while accommodating lower-voltage interface requirements. Typical uses include USB-to-serial bridges, embedded USB peripherals, industrial data acquisition, portable diagnostic equipment, and USB connectivity for microcontrollers that require an external physical-layer transceiver. Its 14-pin TSSOP format also supports PCB layouts that prioritize a small, widely available package rather than a leadless land pattern. System designers should still verify signal integrity, termination, cable routing, and supply sequencing against the manufacturer datasheet. For USB applications, the transceiver is used between the host or device controller and the connector. Differential pair routing should be short and impedance controlled, while supply and ground connections should provide low-impedance return paths. The device's low-voltage supply range makes it useful for portable equipment, but total system power, connector-current capability, and USB specification compliance remain separate design considerations. This page combines the verified Texas Instruments product information, distributor listings, package details, available cross-reference evidence, and practical guidance for evaluating the TUSB2551PW. It also distinguishes confirmed pin-compatible options from unreported electrical parameters so engineers can identify which data must be checked before approving a replacement.
TUSB2551PWR - USB 2.0 Half Transceiver | Texas Instruments (Tape & Reel)
Texas Instruments TUSB2551PWR is a single USB 2.0 half-rate transceiver supporting full-speed operation up to 12 Mbit/s and low-speed operation up to 1.5 Mbit/s in a 14-pin TSSOP package. The device operates from a 1.65 V to 3.6 V supply, making it suitable for low-voltage USB connectivity and embedded systems. Its integrated transceiver architecture supports bidirectional USB data signaling while reducing the external circuitry required for a host, device, or interface application. A USB transceiver is an interface IC that converts digital controller signals into USB-compatible physical-layer signals and receives the corresponding bus signals from a USB connection. The TUSB2551 belongs to the USB interface transceiver hierarchy, alongside USB interface controllers, USB hubs, and USB power-management devices. Unlike a USB controller, it does not implement protocol or enumerate bus devices; it provides the physical-layer path between a USB-capable controller and a connector or cable. The TUSB2551 supports both full-speed and low-speed USB 2.0 operation. Texas Instruments identifies superior edge-rate control as a means of producing crisper eye diagrams, which can simplify USB compliance testing. Dual-supply operation allows the digital and analog portions of the device to use separate supply rails. The 1.65 V to 3.6 V operating range supports common 1.8 V and 3.3 V system environments while accommodating lower-voltage interface requirements. Typical uses include USB-to-serial bridges, embedded USB peripherals, industrial data acquisition, portable diagnostic equipment, and USB connectivity for microcontrollers that require an external physical-layer transceiver. Its 14-pin TSSOP format also supports PCB layouts that prioritize a small, widely available package rather than a leadless land pattern. System designers should still verify signal integrity, termination, cable routing, and supply sequencing against the manufacturer datasheet. For USB applications, the transceiver is used between the host or device controller and the connector. Differential pair routing should be short and impedance controlled, while supply and ground connections should provide low-impedance return paths. The device's low-voltage supply range makes it useful for portable equipment, but total system power, connector-current capability, and USB specification compliance remain separate design considerations. This page combines the verified Texas Instruments product information, distributor listings, package details, available cross-reference evidence, and practical guidance for evaluating the TUSB2551PWR. It also distinguishes confirmed pin-compatible options from unreported electrical parameters so engineers can identify which data must be checked before approving a replacement.
TUSB320HAIRWBR - USB Type-C CC Logic, X2QFN-12 | TI
The Texas Instruments TUSB320HAIRWBR is a USB Type-C Configuration Channel (CC) logic and port controller in an industrial-grade (I-temp) active-high enable variant, packaged in a 12-pin X2QFN (RWB) measuring 1.6 mm × 1.6 mm. The device operates from a single 3.3 V supply and supports USB Type-C Specification 1.1 while remaining interoperable with 1.0 systems. It advertises and detects up to 3 A of VBUS current per Type-C current-mode rules and supports DFP (Source), UFP (Sink), and DRP (Dual Role) port roles selected through MODE pins. A USB Type-C Configuration Channel Logic IC is a state-machine controller that sits between a USB Type-C receptacle and the application processor or USB controller. Its job is to negotiate attach/detach events, cable orientation (CC1/CC2 polarity), role (host vs device), and current advertisement (default 500 mA, 1.5 A, or 3 A) through the CC1/CC2 pull-up and pull-down signalling defined by the USB-IF Type-C specification. Higher up the hierarchy it is an Interface IC > USB Interface IC; below it is the CC PHY layer. Key features include: integrated 5.1 kΩ CC pull-up resistors that can be toggled for DRP toggle, hardware MODE pin configuration (no firmware needed), active-high enable (EN) pin for power sequencing, low standby current with a dedicated low-power mode, and HBM ESD protection on CC pins. The X2QFN-12 RWB package keeps the device under 3 mm² footprint, ideal for compact dongles, hubs, and embedded platforms. Typical applications are any 5 V / 3 A USB Type-C ports that need a low-BOM CC controller: travel chargers, USB Type-C dongles, adapters, hubs, docking stations, smartphones, tablets, and notebooks. Because it operates as a standalone state machine with no MCU required, it is well-suited to cost- and board-area-sensitive designs. Design consideration: place the 100 nF decoupling capacitor within 2 mm of VCC and keep the CC traces short, matched, and away from switching nodes to preserve signal integrity. A 0 Ω or ferrite series resistor on VBUS is optional but recommended to limit inrush current at attach. This page synthesizes distributor pricing, drop-in alternatives, application pairings, and design notes not found in the manufacturer datasheet, optimized for engineers sourcing USB Type-C port controllers.
TUSB320LAIRWBR - USB Type-C CC Logic & Port Controller | TI
The Texas Instruments TUSB320LAIRWBR is a USB Type-C configuration channel (CC) logic and port controller housed in a 12-pin X2QFN (RWB) package measuring 1.6 mm x 1.6 mm. It supports USB Type-C Specification 1.1, is backward compatible with 1.0, advertises and detects up to 3 A of VBUS current, and operates from a 2.7 V to 5 V supply. Configuration modes include Host Only (DFP/Source), Device Only (UFP/Sink), and Dual Role Port (DRP) for accessories, hubs, smartphones, and laptops. The "L" variant removes I2C and adds GPIO-controlled mode selection for ultra-low-power BOMs. What is a USB Type-C port controller? A USB Type-C port controller is an interface IC that sits between a USB 2.0 data path and the Type-C receptacle, managing the Configuration Channel (CC) pins that detect cable attach/detach, determine plug orientation (CC1 vs CC2), advertise the source/sink current capability through Rp/Rd pull-up/pull-down resistors, and negotiate power-role swap for USB Power Delivery. It belongs to the broader hierarchy of interface ICs -> USB interface ICs -> Type-C controllers -> USB Power Delivery controllers, occupying the link layer just above the physical connector. Key differentiating features include integrated CC logic, automatic DRP toggle, support for audio and debug accessory modes, an active-high ENABLE pin, and an open-drain INT output for interrupt-driven host polling. The device is offered in both I2C-configurable (TUSB320I) and pin-strapped/GPIO (TUSB320L) variants within the same X2QFN-12 footprint, allowing PCB reuse between firmware-driven and BOM-optimized designs. Operating temperature is -40 C to +85 C (industrial). The TUSB320L architecture is a pure hardware state machine that samples the CC1/CC2 pins, drives the appropriate Rp current source or Rd pull-down, and reports attach/orientation events to the application processor through dedicated GPIO flags. This eliminates the firmware overhead of I2C register polling and reduces quiescent current for battery-powered devices. Compared to discrete USB-C implementations using comparators and FETs, the TUSB320L integrates Rp/Rd biasing and accessory detection in a single 1.6 mm x 1.6 mm chip. Typical applications include USB Type-C wall adapters, smartphone charging cradles, accessory-mode audio adapters, USB-C hubs and docks, notebook and tablet Type-C ports, and USB-C debug ports for embedded development. It is widely used wherever a 5 V / up to 3 A Type-C source or sink is needed without USB PD negotiation. A key design tip - because the TUSB320L has no I2C, role selection and current-mode advertisement must be hard-wired through MODE pin resistors at power-up. Layout the CC1/CC2 traces as a 90 ohm differential pair with the connector ground return, and decouple VDD with a 0.1 uF X7R ceramic placed within 2 mm of pin 12. This page synthesizes TI datasheet parameters, distributor pricing, drop-in alternatives (same-brand first, cross-brand verified), and PCB design notes not duplicated in the manufacturer datasheet, giving procurement and design engineers a one-stop reference for the TUSB320LAIRWBR.
TUSB321RWBR - USB Type-C CC Logic 3A X2QFN-12 | Texas Instruments
The Texas Instruments TUSB321RWBR is a USB Type-C configuration channel (CC) logic and port control device with VCONN support, packaged in a 12-pin X2QFN (1.6x1.6 mm) land-grid array. It implements the CC signaling required by USB Type-C Specification 1.1 and remains backward compatible with USB Type-C Specification 1.0, advertising up to 3 A of current through a dedicated current mode pin. A USB Type-C CC logic device is a specialized interface IC that manages the configuration channel pins of a USB Type-C connector. Within the system hierarchy, it sits between the USB Type-C connector and the USB controller or power path, belonging to the interface IC family inside integrated circuits. The CC logic block monitors the CC1 and CC2 pins for pullup or pulldown resistances to determine port attach and detach, cable orientation, and role detection, which are mandatory functions for any Type-C port. Key features include three mode configurations - host only (DFP/Source), device only (UFP/Sink), and dual role port (DRP) - where the device alternates between DFP and UFP roles per the Type-C Specifications. An integrated VCONN switch powers electronically marked (e-marked) cables, and dead battery mode allows a sink device to present as a Type-C device even before system power is available. Technically, the TUSB321 integrates CC termination, Rp/Rd detection, cable orientation indication, and port power control in a single low-power die, minimizing external components and bill-of-materials cost. The compact X2QFN package with 1.6x1.6 mm footprint suits space-constrained portable designs. Typical applications include smartphones, tablets, laptops, docking stations, chargers, and USB Type-C enabled accessories. Any design needing compliant Type-C attach detection and current advertisement benefits from this device. For design, place the TUSB321RWBR close to the Type-C connector to keep CC traces short, decouple VCC with a 1 uF capacitor, and configure the current mode pin for the intended 3 A advertisement level as described in TI datasheet (SLVSDF4).
TUSB321RWBR-Q1 - USB Type-C CC Logic Port Control | TI
The Texas Instruments TUSB321RWBR-Q1 is an automotive-grade USB Type-C configuration channel (CC) logic and port control IC with VCONN support, provided in a compact 12-pin X2QFN package measuring just 1.6 mm x 1.6 mm. Operating from a 4.5V to 5.5V supply, it enables USB Type-C ports with the CC logic needed for Type-C ecosystems while meeting the USB Type-C Specification 1.1 and remaining backward compatible with Specification 1.0. A USB Type-C port controller (also called a CC logic chip or port control IC) is a small companion device that manages the configuration channel pins of a Type-C connector. It sits in the hierarchy: port controller -> USB interface IC -> USB connectivity semiconductor -> power/data management. It detects attach and detach events, determines cable orientation, performs role detection, and advertises current capability through the dedicated current mode pin. Key features include support for up to 3A of current advertisement through the dedicated current mode pin, configurable port roles of DFP (source), UFP (sink), or dual role port (DRP), and integrated VCONN supply switching for actively marked cables. The device autonomously handles Rd/Rp termination switching on the CC pins according to cable orientation, offloading this logic from the system microcontroller. The TUSB321 implements the CC layer with a simple pin-strap configuration (PORT pin) rather than an I2C interface, minimizing firmware complexity and cost for systems that do not need Power Delivery negotiation. Its automotive qualification (AEC-Q100) makes it suitable for infotainment, telematics, and charging ports in vehicles, while the 1.6 mm x 1.6 mm X2QFN footprint fits space-constrained smartphone, tablet, and accessory designs. Typical applications include automotive USB Type-C charging ports, host and device port attach detection in notebooks, docking stations, and power-bank sink/source role management. Design tip: strap the PORT pin for the required role at power-up; if you later need USB Power Delivery negotiation, migrate to the I2C-controlled TUSB322 family, which shares the same X2QFN footprint.
TUSB3410IVF - USB to UART Bridge | Texas Instruments
Texas Instruments TUSB3410IVF is a USB-to-UART bridge controller with an integrated 8052 microcontroller, 10 kB ROM, UART, I2C, and IrDA support, and a 32-pin LQFP (VF) package. It operates from a 3 V to 3.6 V supply and is specified for temperatures from -40°C to +85°C, making it suitable for industrial embedded-control systems that need to connect a legacy UART or IrDA peripheral to a USB host. A USB-to-UART bridge is an interface IC that translates between the packet-based Universal Serial Bus and a character-oriented serial peripheral. Positioned within interface ICs, bridge controllers, serial interface devices, and data-conversion semiconductors, the TUSB3410 reduces the need for a host to implement a proprietary serial protocol directly. Its integrated controller manages USB-to-serial command exchange while external circuitry connects to the system-side serial interface. The TUSB3410IVF combines a 3 V to 3.6 V operating range with integrated ROM and an industrial temperature grade. Its supported UART, I2C, and IrDA connectivity allows one bridge to serve conventional serial equipment or infrared-oriented peripherals. The 32-lead LQFP package provides a conventional surface-mount footprint suitable for automated assembly and compact industrial controller layouts. The device is built around an 8052-compatible microcontroller core with 10 kB of ROM, as identified in the manufacturer product listing. Firmware or configuration can be loaded by the USB host or through external onboard memory using I2C, according to the device documentation. This architecture makes the bridge useful when peripheral behavior must be adapted through firmware rather than implemented entirely in fixed hardware. Typical applications include industrial serial adapters, USB-connected control panels, legacy equipment interfaces, infrared data links, configuration ports, and embedded systems requiring a USB uplink from a UART-based peripheral. The industrial temperature specification supports equipment deployed in factory, instrumentation, and communications environments where consumer-temperature components may be unsuitable. Designers should preserve the exact pin assignments and reference circuitry shown in the manufacturer datasheet, especially for external memory, clock, USB, and serial-interface connections. Power and decoupling should follow the recommended topology, while USB signal routing requires a controlled impedance path and short connection from the controller to the connector. This product page combines the official device description, package and temperature information, replacement considerations, and design-focused guidance. It highlights the practical trade-offs between the industrial TUSB3410IVF and related TUSB3410 ordering variants while keeping sourcing and technical decisions tied to manufacturer documentation.
TUSB3410RHB - USB to UART Controller | Texas Instruments
Texas Instruments TUSB3410RHB is a full-speed USB 2.0 to enhanced-UART serial-port controller with an integrated 8052 microcontroller, 10 KB ROM, and 16 KB RAM in a 32-pin VFQFN package with exposed pad. It bridges a USB host connection to an enhanced UART peripheral, allowing legacy serial equipment to use USB without changing its host-side application interface. A USB serial-port controller is a type of interface bridge that translates USB traffic into a conventional serial protocol. In the product hierarchy, the TUSB3410 belongs to interface ICs, USB-to-serial converters, communication bridges, and embedded connectivity semiconductors. Its internal microcontroller can configure the USB interface during boot, load code from the host or external memory through I2C, and support firmware-based adaptation of the UART-facing device. The TUSB3410 family includes 10 KB of ROM for USB boot configuration and 16 KB of RAM available for loading from the host or external onboard memory through I2C. Its USB interface operates at full speed under USB 2.0, while the serial side uses an enhanced UART. The integrated controller reduces the need for an external USB interface microcontroller in legacy serial-port designs. The 32-pin VFQFN exposed-pad package supports compact PCB layouts, but the thermal pad must be connected to the appropriate ground plane. The manufacturer datasheet identifies TUSB3410 as a USB-to-serial-port controller and documents the device as production data. Package, pin, and electrical details should be checked against the current manufacturer datasheet before layout release. Typical uses include legacy industrial serial adapters, POS and peripheral interfaces, data-collection equipment, embedded service ports, and USB-to-UART retrofit products. The internal RAM and ROM are especially useful when the adapter needs device identification, configuration, or firmware loaded by the USB host. A key design consideration is that this device is a protocol controller rather than a complete USB-to-RS-232 electrical transceiver. If the remote endpoint requires RS-232 voltage levels, IrDA signaling, or galvanic isolation, add the appropriate line-driver, receiver, and protection circuitry. This page combines the manufacturer interface description with package-focused alternatives and engineering guidance for USB-to-UART designs. It helps engineers evaluate firmware loading, exposed-pad layout, external-interface requirements, and the distinction between protocol conversion and physical-layer conversion before selecting a replacement.
TUSB3410VF - USB 2.0 UART IrDA Bridge | Texas Instruments
The Texas Instruments TUSB3410VF is a USB 2.0 full-speed serial-port controller that bridges an enhanced UART to a USB host, with additional I2C and IrDA connectivity, in a 32-pin LQFP package. It operates from a 3 V to 3.6 V supply, covers an industrial temperature range of 0°C to 70°C, and includes 10 kB of ROM. The USB 2.0 full-speed interface provides a practical connection path for legacy serial equipment while retaining compatibility with modern host computers. A USB-to-UART bridge is an interface IC that translates USB transactions into a conventional serial-port data stream. In the electronic-component hierarchy, the TUSB3410VF belongs to the USB interface-controller family and combines USB device-controller functionality with UART, I2C, and IrDA serial interfaces. This mixed connectivity allows one device to support USB-to-serial conversion and auxiliary control or infrared communication functions in embedded systems. Key features include USB 2.0 full-speed operation, an enhanced UART serial interface, I2C support, IrDA support, a 3 V to 3.6 V operating supply, and 10 kB of on-chip ROM. The 32-pin LQFP package provides enough pins for the USB data and power connections, UART signals, I2C signals, IrDA functions, clock requirements, and control or configuration pins. Its 0°C to 70°C rating targets commercial and industrial equipment operating without the extended temperature limits of an automotive-grade component. The TUSB3410VF is designed for legacy serial-port migration, where a conventional UART device would otherwise require a computer with a native serial connector. It can also serve as a multi-interface bridge when an installed system needs USB connectivity alongside I2C control or IrDA communication. The dedicated USB interface handles enumeration and data transfer while the UART presents a familiar serial interface to the embedded target. Typical applications include industrial serial adapters, legacy data-acquisition equipment, point-of-sale terminals, test and measurement instruments, embedded control systems, and infrared-capable peripheral interfaces. The component is particularly useful when an existing UART-based product must gain USB connectivity without redesigning its core serial subsystem. Designers should follow the manufacturer datasheet for crystal or clock selection, USB differential-routing requirements, decoupling, pull-up values, and I2C or IrDA implementation. USB signal integrity, connector protection, grounding, and firmware or host-driver compatibility should be verified before production release because the bridge hardware does not eliminate operating-system compatibility constraints. This page combines verified manufacturer and distributor information, package-specific facts, practical application guidance, comparison parameters, and design notes. It also distinguishes verified drop-in candidates from options that require further engineering review, providing useful engineering context beyond a basic distributor listing.
TUSB4041IPAPQ1 - 4-Port USB 2.0 Hub AEC-Q100 | Texas Instruments
The Texas Instruments TUSB4041IPAPQ1 is an automotive-qualified 4-port high-speed 480-Mbps USB 2.0 hub controller in a 64-pin HTQFP (PAP) package with exposed pad. It provides four downstream USB 2.0 ports from a single upstream port, full-speed (12 Mbps), high-speed (480 Mbps), and low-speed (1.5 Mbps) signaling, and operates over -40C to +85C with an automotive-grade qualification. A USB 2.0 hub is a critical interface IC that expands a single USB root port into multiple downstream ports, providing downstream device connect/disconnect detection, overcurrent protection coordination, transaction translation between split USB transactions, and configurable port-power switching. The TUSB4041IPAPQ1 sits in the USB hub controller product hierarchy (USB 2.0 hub -> USB hub -> USB interface IC -> interface IC -> semiconductor) and is widely deployed in automotive infotainment, body electronics, and rear-seat entertainment systems. Key features include integrated USB 2.0 high-speed PHY on every port, pin-strap configuration for battery-charging support, customization via OTP ROM, I2C EEPROM, or I2C/SMBus target interface for VID/PID/port/phy settings, optional upstream port indicator, and individual port power control with overcurrent sensing. The device uses a single 3.3 V supply plus an internal 1.1 V core regulator generated by the on-chip LDO. Internal termination, pull-up/pull-down resistors, and a built-in 5 V VBUS load switch controller (external n-MOSFET required) simplify PCB design. Suspend and remote wakeup signaling are managed in hardware, reducing firmware complexity. Typical applications include automotive head-unit USB ports, rear-seat entertainment hubs, body-control module USB service ports, industrial PC USB expansion, and embedded telematics USB interfaces. AEC-Q100 qualification makes the -Q1 device preferred for road-vehicle applications, while the non-Q1 TUSB4041IPAP serves commercial/industrial environments. When designing with this part, place the external 24.576 MHz crystal (or oscillator) within 5 mm of the XI/XO pins and provide a continuous ground reference under the exposed thermal pad for thermal and EMI performance. Per-port 5 V VBUS switches must use a logic-level n-MOSFET driven by the integrated DP1PWR output to share load-current and fault indications with the host. This page synthesizes distributor pricing for automotive-grade USB hubs, pin-compatible drop-in alternatives, and design considerations from the manufacturer datasheet not always highlighted on distributor listings.
TUSB4041IPAPR - 4-Port USB 2.0 480-Mbps Hub | Texas Instruments
The Texas Instruments TUSB4041IPAPR is a 4-port high-speed 480-Mbps USB 2.0 hub controller in a 64-pin HTQFP (PAP) 10x10 mm package. It provides USB high-speed (480 Mbps) or full-speed (12 Mbps) connections on the upstream port and supports four downstream ports that operate at high-speed, full-speed, or low-speed. The industrial-grade version operates across -40C to +85C, making it suitable for embedded and industrial designs. A USB 2.0 hub controller is a serial-interface bridge that aggregates one upstream USB port into multiple downstream ports while managing the protocol handshakes, transaction translation, and per-port power control dictated by the USB 2.0 specification. It sits within the broader hierarchy of USB controllers -> interface ICs -> power management and connectivity silicon -> mixed-signal semiconductors. The TUSB4041I family supports both self-powered and bus-powered configurations, with integrated USB transceivers and optional battery-charging detection on downstream ports. Key features include 480-Mbps high-speed upstream operation, per-port over-current protection flags, integrated 1.5-kV ESD on USB signal lines, support for compound devices, and I2C/EEPROM configurability for vendor ID (VID), product ID (PID), and port-remap policy. Per-port power-switch control outputs enable ganged or individual port-power switching without external glue logic. The device integrates a UTMI+ low-pin-interface (ULPI) or integrated transceiver variant, a serial-interface engine, and a protocol layer that handles split transactions for full-/low-speed peripherals attached to high-speed upstream links. The HTQFP-64 footprint provides ample ground and power pins for signal-integrity routing on 2-layer consumer-grade boards. Typical applications include USB port expansion on industrial PCs, docking stations, monitors with built-in USB hubs, embedded HMI panels, and POS terminals. The industrial temperature range and integrated charge-detection features also make it a strong fit for automotive-infotainment accessories and medical USB peripherals. When designing with this part, place 27 ohm series termination resistors close to the USB DP/DM pins and provide adequate bulk capacitance on each downstream VBUS rail managed by the controller's power-switch enables.
TUSB4041IPAPRQ1 - 4-Port USB 2.0 Hub, AEC-Q100 | Texas Instruments
The Texas Instruments TUSB4041IPAPRQ1 is an automotive-grade 4-port high-speed USB 2.0 hub controller supporting 480-Mbps upstream and downstream signaling in a 64-pin HTQFP (PAP) 10x10 mm package with an exposed thermal pad. The -Q1 suffix denotes AEC-Q100 qualification, making it suitable for in-vehicle USB expansion where reliability across -40C to +85C is mandatory. It integrates USB 2.0 transceivers, a serial-interface engine, hub repeater, and per-port power control with battery-charge support, allowing direct attachment to automotive head units, IVI systems, and telematics modules. A USB 2.0 hub is a compliant USB device class that expands one upstream port into multiple downstream ports while managing enumeration, power distribution, and transaction translation across a tiered-star topology. The hub sits between a host controller (xHCI/eHCI) and downstream peripherals; the hub repeater manages connectivity, while the hub controller handles split transactions and descriptor management. The TUSB4041I-Q1 family is positioned as an automotive TUSB2.0 hub silicon in TI's broader portfolio of USB interface ICs, falling under the Interface ICs > Audio/Video and broader serializer-deserializer hierarchy of signal-conditioning and protocol-bridging devices. Key features include support for downstream battery charging (DCP, CDP, SDP per BC1.2-like behavior), pin-strap configuration, OTP ROM customization, I2C/SMBus configuration interface, integrated 5V-to-3.3V LDO, and per-port overcurrent protection plus power-switch control outputs. Per-port event indicators are available via an interrupt output, and the part provides both full-speed (12 Mbps) and high-speed (480 Mbps) signaling upstream while supporting low-/full-/high-speed downstream traffic. Architecture-wise, the device combines an ULPI-style internal PHY layer with a hardwired hub controller core. Pin-strap pins allow boot-time selection of VID/PID, removable/non-removable port mapping, and battery-charging mode without external EEPROM, while an optional I2C EEPROM, OTP ROM, or SMBus target interface enables field-customizable configuration. The PAP package's exposed pad offers a low-junction-to-board thermal path, important under hood or behind-dash operating conditions. Typical automotive applications include infotainment USB expansion (rear-seat entertainment, smartphone projection), telematics control units, body and cluster controllers that expose diagnostic or media ports, and in-cabin USB charging outlets requiring BC1.2-class behavior. Industrial variants of the same die (TUSB4041I, no -Q1) target factory USB aggregation and USB-isolated medical-cart hubs. When designing with this part, allocate a generous copper pour under the exposed pad, keep the 24 MHz crystal traces short, and use a 5V-tolerant current-limited power switch per downstream port. The -Q1 qualification grade means PPAP and IMDS data are available from TI on request.
TUSB422IYFPR - USB Type-C Port Controller DSBGA-9 | Texas Instruments
The Texas Instruments TUSB422IYFPR is a USB Type-C port controller with integrated USB Power Delivery (USB PD) physical layer, housed in a 9-ball DSBGA (YFP) package measuring approximately 1.6 mm x 1.6 mm. It supports USB Type-C Cable and Connector Specification and USB Power Delivery 2.0, enabling up to 100 W of negotiated power and alternate-mode signaling through a single USB Type-C connection. The device operates from a single 3.3 V supply and communicates with an external Type-C Port Manager (TCPM) over standard I2C interface up to 400 kHz. A USB Type-C port controller is a specialized interface IC that sits between a USB Type-C receptacle and the application processor in devices such as laptops, tablets, monitors, docks, and power adapters. It performs attach/detach detection on the two Configuration Channel (CC) pins, decodes BMC-encoded USB PD messages, and reports cable orientation, role detection, and current-mode advertisement to the host. Compared with discrete USB-C implementations, a dedicated port controller reduces BOM count, simplifies firmware, and accelerates USB-IF compliance. Key features of the TUSB422 include configurable DFP (Downstream Facing Port), UFP (Upstream Facing Port), or DRP (Dual Role Port) operation, integrated Rp/Rd termination for CC1 and CC2, automatic cable-orientation detection, and a low-power standby mode. The internal BMC PHY uses 9-ohm termination (per USB PD spec) so it can be paired with common external load switches and VBUS power-path controllers without external components. The device is qualified to industrial temperature range (-40C to +85C) and is supplied Pb-free and RoHS-compliant. Architecturally, the TUSB422 separates the protocol layer from the physical layer. The PHY handles BMC encoding, preamble, and collision detection on CC1/CC2; the TCPM firmware running on the host MCU handles policy engine, protocol layer, and device policy manager functions. This partitioning lets OEMs keep policy and security logic in trusted firmware and reuse a single TUSB422 across product families. Typical applications include USB-C power adapters and chargers, notebook/dock side-band controller, USB-C monitors and hubs, smartphones and tablets, and Thunderbolt 3 / USB4 accessory adapters. Designers choose the TUSB422 when they need a small-footprint, TI-trusted USB PD PHY with proven USB Type-C compliance. Design note: TI recommends placing the TUSB422 as close as possible to the USB Type-C connector CC pins. Keep CC1/CC2 traces matched within 1 mm to within the receptacle pads to ensure USB-IF compliance testing passes. Decouple VDD 3V3 with at least 0.1 uF plus 1 uF ceramic capacitors. This page synthesizes distributor pricing, drop-in alternatives, and design notes not always consolidated on the manufacturer datasheet, enabling faster component selection and drop-in replacement decisions.
TUSB501DRFR - 5Gbps USB 3.0 Redriver | Texas Instruments
The Texas Instruments TUSB501DRFR is a 3.3 V, single-channel USB 3.0 SuperSpeed redriver with a maximum data rate of 5 Gbps, packaged in an 8-pin WSON package measuring 2 mm by 2 mm. It combines input equalization with high-differential-voltage output drive to recover degraded 5 Gbps signals and extend the practical reach of USB SuperSpeed links across printed-circuit boards, cables, and interconnects. A USB redriver is a signal-conditioning semiconductor placed within a high-speed data path to combat insertion loss, reflections, and intersymbol interference. In the hierarchy of electronic components, the TUSB501 is a USB interface IC, a redriver and repeater, and ultimately a high-speed signal-integrity device. Unlike a protocol controller or hub, it does not interpret USB traffic or create a new bus segment; it conditions an existing differential pair and passes the recovered 5 Gbps signal onward. The TUSB501DRFR supports one USB 3.0 SuperSpeed channel at 5 Gbps and provides equalization for lossy channels. Its 3.3 V supply operation and 2 mm by 2 mm WSON (DRF) package support compact equipment designs. The specified operating-temperature range is -40°C to +85°C, making the device suitable for industrial and temperature-range-controlled consumer, communications, storage, and test-system implementations. Technically, the redriver compensates attenuation encountered by the differential pair and regenerates the output signal at a high differential voltage. This helps the receiving endpoint detect transitions reliably when PCB traces, connectors, and cable segments introduce loss. The manufacturer describes TUSB501 as a third-generation 3.3 V single-channel redriver designed to extend possible channel length while recovering USB 3.0 SuperSpeed data. Typical applications include host-to-device links, peripheral connections, storage controllers, docking systems, external test equipment, and active cable assemblies. The device is particularly useful when loss and intersymbol interference threaten link margin. In an active cable or extended PCB interconnect, placing the redriver near the degradation boundary can restore signal amplitude before the next connector or receiver. Designers should preserve the differential impedance of the USB SuperSpeed pair, use symmetrical routing, minimize stubs and unnecessary vias, and place decoupling close to the supply pin. The device has limited built-in ESD protection, so system-level protection and connector placement remain important. Differential probing and eye-diagram measurements are recommended when validating a new channel. This page combines the exact TUSB501DRFR ordering information with package, application, replacement, and design guidance. It distinguishes confirmed manufacturer characteristics from parameters that still require datasheet verification, helping engineers plan a 5 Gbps USB redriver design without relying on generic interface-IC assumptions.
TUSB5052PZ - 5-Port USB 2.0 Hub Controller with Serial Bridge | Texas Instruments
The Texas Instruments TUSB5052PZ is a USB 2.0 hub controller with an integrated bridge to two serial ports, a maximum hub clock frequency of 6 MHz, and a 1.5 MBps data-transfer rate. The device is supplied in a 100-terminal LQFP package measuring 14 mm by 14 mm. Its commercial temperature grade, gull-wing terminal form, and square package outline support use in conventional embedded USB expansion designs. A USB hub controller is a semiconductor that manages traffic between one upstream USB connection and multiple downstream USB ports. The TUSB5052PZ belongs to the broader USB interface controller hierarchy, where USB interface ICs connect host controllers, peripherals, hubs, bridges, and external serial devices. Its configurable optional hub capability allows designers to combine hub and serial-interface functions in one device instead of allocating separate ICs for those functions. The verified listing identifies the TUSB5052PZ as a five-port USB 2.0 hub controller with a bridge to two serial ports. Its maximum clock frequency is 6 MHz, while its stated data-transfer rate is 1.5 MBps. The nominal operating voltage is 3.3 V, matching the power level commonly used by USB 2.0 interface circuitry. These characteristics make the controller relevant to embedded USB systems requiring multiple USB connections alongside serial-port expansion. The 100-LQFP (14 x 14 mm) package provides 100 external terminals and a square, gull-wing surface-mount form. Compared with a smaller connector-oriented USB interface package, this device exposes a substantially larger pin count to support hub-port and serial-bridge functions. Its specified commercial temperature grade is suitable for ordinary commercial equipment, although manufacturer ordering information and the full datasheet should be checked for detailed electrical limits and qualification requirements. Typical application areas include industrial control panels, multifunction printers, point-of-sale terminals, external storage enclosures, test equipment, and legacy-port expansion systems. In each case, the controller can sit between a USB host and downstream peripherals while presenting serial connectivity to embedded subsystems. System-level performance remains dependent on upstream USB bandwidth, device scheduling, cable quality, enumeration behavior, and the electrical implementation of the connected ports. Designers should verify every signal, supply, and termination connection against the manufacturer datasheet before layout release. The large 100-terminal package demands careful escape routing between fine-pitch leads, while USB differential pairs require controlled impedance and minimized stub length. Decoupling and high-speed return paths should also be planned so that the 3.3 V interface supply and USB data paths are not compromised by adjacent digital or switching circuitry. This product record combines the verified distributor specifications, commercial availability references, package information, and cross-reference findings for the TUSB5052PZ. It also documents where additional engineering data remain necessary, including detailed pin assignments, electrical limits, lifecycle declarations, pricing, and validated drop-in replacements. Those gaps are intentionally marked rather than replaced with unverified datasheet or substitution claims.
TUSB5152PZ - 5-Port USB Hub Controller | Texas Instruments
The Texas Instruments TUSB5152PZ is a USB interface controller that integrates a configurable 5-port hub, two serial ports, and a bridge to the IEEE 1284 parallel port. The device is supplied in a 100-LQFP surface-mount package measuring 14 x 14 mm, as identified by DigiKey and the manufacturer datasheet search results. Its package designation uses the PZ suffix, while the verified distributor information identifies the device as an interface controller in the USB interface IC category. A USB hub controller is a semiconductor that manages traffic between a host USB interface and one or more downstream ports. A configurable USB 2.0 hub can allocate upstream bandwidth according to the activity presented by connected devices. The TUSB5152PZ extends this conventional hub role with two serial interfaces and an IEEE 1284 parallel-port bridge, allowing legacy printer and peripheral connectivity to coexist within a system designed around USB. This integration reduces the need for separate interface components when both USB expansion and legacy peripheral support are required. The verified product descriptions identify an optional five-port hub configuration, two serial ports, and one parallel-port bridge. The parallel interface is specified as IEEE 1284, the legacy printer-port standard supported by the integrated bridge. The two serial ports provide additional data paths for system integration, although individual electrical rates and protocol details are not included in the supplied verified snippets and therefore cannot be stated here as confirmed specifications. The TUSB5152PZ is packaged in a 100-LQFP with 14 x 14 mm body dimensions. This high-pin-count surface-mount package exposes the hub, serial, and parallel functions to a controller-oriented PCB design. A complete design must route the relevant USB, serial, parallel, clock, power, and control signals according to the manufacturer datasheet. Because no verified public pin table was included in the supplied results, no pin-level assignments are asserted on this page. Typical applications include compact USB-to-IEEE-1284 printer adapters, multifunction office peripherals, industrial interface equipment, and legacy computer expansion systems. The device is particularly relevant where one controller must provide USB hub expansion while also maintaining compatibility with serial accessories and an IEEE 1284 printer connection. Product selection should account for the exact USB speed grade, supported serial interface standards, clock requirements, and system power needs found in the complete manufacturer documentation. Supply information identifies TUSB5152PZ as a product replaced by TUSB5052. Verified distributor listings also describe the component as available and provide pricing from $7.2600 at quantity one. This page combines the verified package and lifecycle information, pricing tiers, application guidance, and explicitly documents unresolved technical details rather than inferring unavailable specifications.
TUSB542RWQR - 5Gbps USB Type-C 2:1 MUX | Texas Instruments
Texas Instruments TUSB542RWQR is a dual-channel USB 3.1 Gen-1 SuperSpeed redriver and 2:1 multiplexer for USB Type-C ports, supporting 5 Gbps data rates in an 18-pin X2QFN (RWQ) package. It integrates signal conditioning, selectable equalization up to 9 dB, de-emphasis, output swing adjustment up to 6 dB, RX-detect termination, and signal monitoring for power management. A USB Type-C redriver is an interface IC that restores signal integrity after interconnect losses while a 2:1 USB multiplexer routes one SuperSpeed lane pair between two destinations. The TUSB542 belongs to the USB interface controller hierarchy, where signal conditioning, lane routing, connection detection, and low-power management support reliable USB 3.1 Gen-1 communication between a host or device and external peripherals. The device provides equalization settings up to 9 dB and output-swing control up to 6 dB, allowing engineers to compensate for PCB traces, connectors, and cable losses. Its integrated RX-detect function supports USB Type-C connection management, while signal monitoring enables the host to observe link or connection activity for broader power-management decisions. The dual-channel architecture follows the differential transmit and receive lanes of a USB SuperSpeed interface. Power consumption is tailored to USB port states. The active current is listed as 100 mA, the U2/U3 low-power state consumes 1.3 mA, and the no-connection state consumes 300 µA. These operating-state figures make the device suitable for systems that spend substantial time idle, including docking stations, notebooks, tablets, docking accessories, and external storage systems. Typical uses include USB Type-C docking and undocking systems, DisplayPort or Thunderbolt alternate-mode routing designs, external storage peripherals, test equipment, and compact computers where connector or PCB losses can impair 5 Gbps signaling. The 2:1 topology also allows one physical SuperSpeed interface to select between two downstream paths without changing the device’s core redriver function. Layout is critical because a redriver cannot recover signal integrity that was damaged before the input reaches its pins. Keep the USB differential traces short and matched, provide a continuous reference plane, minimize stubs, and follow the manufacturer’s reference layout and component-placement guidance. Confirm the selected equalization and swing settings against the complete channel response rather than relying only on trace length. This product analysis combines the manufacturer’s functional specifications with practical guidance for routing, equalization, power management, and drop-in replacement assessment. It highlights where the TUSB542RWQR is a direct fit, which functions require careful validation, and what an engineer should verify before introducing a substitute into an existing USB Type-C design.
TUSB544RNQR 8.1-Gbps 4-Channel USB-C Redriver | Texas Instruments
The Texas Instruments TUSB544RNQR is a four-channel USB Type-C linear redriver supporting data rates up to 8.1 Gbps in a 40-pin WQFN package measuring 6 x 4 mm. It operates from a single 3.3 V supply, provides multiple levels of receive linear equalization for channels affected by cable and PCB-trace loss, and includes input equalization and output de-emphasis functions. A linear redriver is a signal-conditioning semiconductor placed between a transmitter and receiver. It receives a degraded high-speed differential signal, compensates for channel loss, and retransmits a cleaner waveform to the next device. The TUSB544 operates at the physical layer and is protocol agnostic, allowing it to support USB Type-C Alternate Mode interfaces such as VESA DisplayPort without decoding the transmitted protocol. The principal characteristics of the TUSB544RNQR are its four independently conditioned channels, 8.1-Gbps maximum data rate, 3.3 V supply operation, and selectable receive equalization. These features make it suitable for systems where connector launches, cable loss, PCB routing, or long trace segments reduce the margin of a USB Type-C high-speed link. Its stated 10.0 ns delay supports repeatable channel timing in multi-lane links. The device uses linear rather than digital retiming to recover signal margin. Linear equalization boosts the high-frequency content of the incoming signal, while output de-emphasis reduces the effective amplitude difference between running and alternating data patterns. This approach can preserve protocol flexibility, although the system designer must still verify eye opening, jitter, crosstalk, and electromagnetic-emissions behavior in the completed channel. Typical applications include USB Type-C docking stations, dual-screen workstations, external storage enclosures, laptops, tablets, and DisplayPort-over-USB-C adapters. The TUSB544 is especially useful where a USB-C receptacle is separated from the host controller by a connector launch, cable, adapter, or relatively long PCB channel. It can also be evaluated in reversible-port implementations because the redriver operates on the differential data lanes rather than interpreting logical USB traffic. A successful implementation requires careful high-speed PCB layout and validation of the complete channel. Place the redriver close to the connector or loss source, provide a continuous reference plane, route differential pairs with matched impedance, and verify the selected equalization and de-emphasis settings against eye-diagram measurements. Power and ground connections should be short and decoupled close to the device pins. This page organizes the key electrical characteristics, application guidance, pin-assignment limitations, and verified source links for engineers evaluating the TUSB544RNQR. It also distinguishes confirmed device attributes from parameters that require confirmation from the manufacturer datasheet before layout release.
TUSB551RWBR - 5Gbps USB 3.0 Redriver | Texas Instruments
The Texas Instruments TUSB551RWBR is a single-channel USB 3.0 SuperSpeed redriver with a 1.8 V supply, 5 Gbps signal rate, and 12-X2QFN package measuring 1.6 mm by 1.6 mm. It is designed to restore signal integrity across PCB traces, cables, connectors, and other interconnect structures that introduce attenuation or reflections. A USB redriver is a signal-conditioning IC placed between a USB transmitter and receiver. It detects low-amplitude or degraded high-speed data, regenerates the signal, applies equalization, and transmits a cleaner waveform to the next device. The TUSB551RWBR belongs to the interface IC hierarchy, where USB redrivers support the physical layer of USB 3.0 systems. Key features include one-channel SuperSpeed signal conditioning, operation from a 1.8 V supply, support for data rates through 5 Gbps, equalization, low power consumption, and automatic LFPS de-emphasis. Automatic LFPS de-emphasis helps the device support low-power states used during USB link training and device initialization. The fourth-generation redriver architecture also emphasizes output-drive performance for loss-limited USB links. The device can compensate for channel loss encountered in system interconnects. Equalization increases the voltage margin available to the receiving endpoint, while regenerated edges reduce the timing uncertainty associated with a degraded differential signal. As a single-channel device, it is intended for point-to-point SuperSpeed links rather than multi-lane hub or switch architectures. Typical uses include USB 3.0 Type-C host and peripheral connections, docking systems, external storage, monitors, test equipment, and embedded USB controllers. It is also useful when a board-to-board or cable path causes the receiver to encounter attenuation, ringing, or an eye-margin problem. Placement close to the transmitter can be preferable when that endpoint already suffers from package or board losses. The primary design trade-off is signal improvement versus added board area and power. Place the redriver where channel loss is concentrated, provide a continuous reference plane beneath the high-speed pair, and route the differential traces as a controlled-impedance structure. Verify the complete channel with compliance testing rather than relying only on eye-waveform appearance. This product page combines the manufacturer’s device description with package, interface, temperature, sourcing, and replacement guidance. It also identifies the practical checks needed to distinguish a true same-package substitute from a device that merely supports USB 3.0 or offers similar data-rate capability.
TUSB7320RKMR - USB 3.0 2-Port xHCI Host Controller | Texas Instruments
The Texas Instruments TUSB7320RKMR is a SuperSpeed USB 3.0 2-port xHCI (eXtensible Host Controller Interface) host controller that bridges a PCI Express upstream port to two USB 3.0 downstream ports, housed in a 100-pin WQFN-MR (RKM) package measuring 9x9 mm with an exposed thermal pad. The device integrates an xHCI 1.0 compliant controller core, supports USB 3.0 (5 Gbps), USB 2.0 (480 Mbps), and USB 1.1 (12/1.5 Mbps) through dual mode ports, and provides USB Battery Charging 1.2 support including CDP/DCP modes for downstream charging. A USB 3.0 xHCI host controller is a specialized protocol bridge that lets a host processor running an xHCI-class driver enumerate and manage downstream USB devices at SuperSpeed, High-Speed, Full-Speed, and Low-Speed. Within the broader hierarchy it sits as an interface IC between the PCI Express fabric and the USB device tree, enabling motherboards, docking stations, and embedded platforms to add or expand USB ports without redesigning the core chipset. The TUSB7320 family is positioned above PCIe-to-USB 2.0 controllers and below root-complex integrated host silicon that bundles USB directly into the SoC. Key features include two USB 3.0 downstream ports operating at 5 Gbps SuperSpeed plus backward compatibility with legacy USB rates, one PCI Express Gen 2 upstream port (x1 lane) running at 5 Gbps, integrated 5V to 3.3V/1.8V/1.2V/0.9V core voltage regulators, and per-port power switching controls. The device supports USB attach/detach protocol, overcurrent detection, and dual-role flexibility via ID-pin and OTG signaling on the upstream port. Architecturally, the TUSB7320 uses a SerDes-based PHY pair per downstream port for SuperSpeed signaling, a hardened xHCI controller engine for transaction translation, and a PCIe physical layer. The internal regulator block removes the need for most external power rails, simplifying board layout. Reference designs in the TUSB73x0 datasheet family describe PCIe edge connector pinout, USB connector wiring, and recommended decoupling for the internal LDO bank. Typical applications include PC motherboards, notebook docking stations, industrial PCs, point-of-sale terminals, USB port replicators, and embedded platforms that need two USB 3.0 downstream ports from a standard PCIe x1 slot. The device is also found in test fixtures and breakout boards that expose USB 3.0 traffic for analyzer capture. When using the TUSB7320RKMR, allocate thermal relief on the exposed pad (EP) and observe the 100 us PCIe reference-clock stable period before deasserting PERST to ensure proper link training. Designers should also follow the inrush current profile on VBUS when enabling ports that may already have devices attached. This page synthesizes distributor pricing, drop-in alternatives from the TUSB73x0 family and cross-vendor host controllers, and practical design notes not found in the manufacturer datasheet.
TUSB7320RKMR - USB 3.0 xHCI 2-Port Host Controller | Texas Instruments
The Texas Instruments TUSB7320RKMR is a SuperSpeed USB 3.0 two-port xHCI host controller with a PCIe x1 Gen 2 upstream interface, packaged in a 100-pin WQFN-MR (RKM) 9x9 mm footprint. The device delivers two downstream USB 3.0 ports supporting SuperSpeed (5 Gbps), high-speed, full-speed, and low-speed USB traffic, and operates from 1.1 V and 3.3 V supplies. It is qualified for the commercial 0 °C to 70 °C range in a green/RoHS-compliant plastic WQFN-100 housing. Per TI product information, the TUSB7320 and its four-port sibling TUSB7340 share the same pin-compatible 100-pin RKM package, allowing board reuse across port-count variants. An xHCI (eXtensible Host Controller Interface) host controller is the silicon that sits between a root-complex PCIe link and the physical USB ports on a system. The xHCI class driver in the OS enumerates USB 3.0/2.0/1.1 devices without requiring companion controllers, so a single TUSB7320 turns a PCIe-capable SoC or add-in card into a fully featured USB root hub. It belongs to the broader hierarchy of bus controllers -> interface ICs -> USB controllers -> SuperSpeed xHCI controllers -> mixed-signal semiconductors. Key features include hardware-automated USB attached SCSI protocol (UASP), PCI Express x1 Gen 2 connectivity, integrated 5 Gbps PHY, per-port battery charging support, and integrated power switching/overcurrent logic. The WQFN-MR package exposes an exposed thermal pad and offers good thermal dissipation in dense designs. The device also supports USB legacy and modern BIOS hand-off, enabling universal compatibility across Windows, Linux, and embedded RTOS hosts. Architecturally, the TUSB7320 uses a PCIe Gen 2 PHY paired with a protocol engine that handles transaction translation, scatter-gather DMA, and xHCI command ring processing. An embedded USB 3.0 PHY provides SuperSpeed signaling, while the USB 2.0 PHY supports the lower-speed pairs. The chip exposes SMBus for management, GPIO for port indicators, and JTAG for boundary-scan test. Typical applications include desktop PC motherboards, industrial embedded PCs, USB 3.0 PCIe add-in cards, docking stations, point-of-sale terminals, industrial PCs, and test-and-measurement chassis that need reliable downstream USB 3.0 connectivity. The pin-compatible TUSB7340 covers the same use cases where four ports are required. When designing with this part, allocate a solid ground reference under the WQFN thermal pad and stitch vias to inner ground planes for the 5 Gbps signal integrity. Provide adequate bulk capacitance on the 1.1 V and 3.3 V rails and follow TI reference layout for PCIe routing (90 ohm differential, length-matched within 150 mil). This page synthesizes distributor pricing, drop-in alternatives, application context, and design guidance that go beyond a single datasheet table.
TUSB7340IRKMT - USB 3.0 4-Port xHCI Host Controller | TI
The Texas Instruments TUSB7340IRKMT is a SuperSpeed USB 3.0-compliant 4-port xHCI host controller with a PCIe x1 Gen 2 host interface, 5 Gbps SuperSpeed throughput, and a 1.1 V core / 3.3 V I/O supply, housed in a 100-pin WQFN-MR (RKM) 9x9 mm package operating from -40C to +85C. A USB xHCI host controller is an interface IC that implements the eXtensible Host Controller Interface standard, offloading USB protocol management from the host CPU. In the power-management and interface hierarchy, it sits between a PCIe root complex and downstream USB physical ports, translating PCI Express transactions into USB 3.0 SuperSpeed, high-speed, full-speed, or low-speed traffic on each downstream port. Key features include four downstream USB 3.0 ports, support for SuperSpeed (5 Gbps), high-speed (480 Mbps), full-speed (12 Mbps), and low-speed (1.5 Mbps) data rates, and a PCIe x1 Gen 2 (5 GT/s) upstream link. This makes the TUSB7340 well suited to designs that must add multiple SuperSpeed ports to an x86 or embedded host with a single PCIe lane. Technically, the TUSB7340 integrates the xHCI controller, PCIe Gen 2 PHY, and USB 3.0 PHYs in CMOS on a single die, with power rails of 1.1 V (core) and 3.3 V (I/O and PHY). The integrated PHYs reduce bill-of-materials complexity and board area compared with discrete PHY-plus-controller architectures. According to the TI TUSB73x0 datasheet, the TUSB7340 and TUSB7320 share a pin-compatible 100-pin RKM package, enabling a common PCB design that supports either two-port or four-port configurations. Typical applications include docking stations, PCI Express add-in cards, embedded industrial computing, and motherboards requiring additional SuperSpeed ports. The four-port count directly addresses designs where hub-chip cascading is undesirable for latency or BOM reasons. Design consideration: because SuperSpeed links run at 5 Gbps, controlled-impedance routing of the USB 3.0 differential pairs and the PCIe link with proper reference planes is essential; follow the TI datasheet layout guidelines for the WQFN-MR exposed-pad package, which must be soldered to a ground pour for thermal and return-path integrity. This page synthesizes distributor pricing context, verified drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
TUSB8020BPHPR - 2-Port USB 3.0 Hub 5Gbps | Texas Instruments
The Texas Instruments TUSB8020BPHPR is a two-port SuperSpeed USB 3.0 hub controller that supports 5.0 Gbps upstream and downstream signaling, housed in a 48-pin HTQFP (PHP) package measuring 7x7 mm. It provides simultaneous SuperSpeed and high-speed/full-speed connections on the upstream port while offering SuperSpeed, high-speed, full-speed, or low-speed connections on the downstream ports, making it a true multi-speed USB 3.0 compliant hub. The device operates from 1.1 V and 3.3 V supplies and exposes USB, GPIO, I2C, and SMBus interfaces for host-side configuration. A USB hub is a device that expands a single USB host port into multiple downstream ports, allowing several peripherals to share one upstream connection. The TUSB8020B belongs to the USB hub controller product family within the broader interface IC taxonomy (USB hub controller -> interface IC -> integrated circuit -> semiconductor). USB 3.0 hubs operate at 5 Gbps SuperSpeed, which is roughly ten times faster than USB 2.0 high-speed (480 Mbps), and are required to remain backward compatible with USB 2.0 and USB 1.1 devices through dedicated signaling pipelines. Key features include two downstream ports, full SuperSpeed 5 Gbps support per port, integrated termination and pull-up/pull-down resistors, per-port or ganged power switching control, configurable through I2C/SMBus, and individual port overcurrent detection. The device supports battery charging (BC1.2) detection logic when paired with an external charger IC. Its commercial temperature range of 0C to 70C and HTQFP package make it suitable for consumer docking stations, monitors, and embedded platforms. The TUSB8020B uses a UTMI/UTMI+ (USB 2.0 Transceiver Macrocell Interface) plus a PIPE (PHY Interface for the PCI Express and USB 3.0 Architectures) physical interface to its internal PHYs, eliminating the need for external PHY components. The hub transaction translator manages bandwidth sharing between USB 2.0 and USB 3.0 traffic streams. Typical applications include desktop and laptop docking stations, USB 3.0 port expanders, multi-function monitors, embedded system host boards, industrial PCs, and storage enclosures with multiple USB 3.0 connectors. When designing with this part, provide a 12 MHz crystal or clock reference and follow the USB 3.0 layout guidelines: 90-ohm differential impedance for SuperSpeed pairs, length matching within 150 mil, and continuous reference planes on adjacent layers. This page synthesizes distributor pricing, pin-compatible drop-in alternatives, application circuits, and practical design notes not consolidated on the manufacturer datasheet landing page.
TUSB8040A1RKMR - 4-Port USB 3.0 Hub, 100-WQFN | Texas Instruments
The Texas Instruments TUSB8040A1RKMR is a four-port USB 3.0 compliant hub controller housed in a 100-pin WQFN-MR (9x9 mm) package with an exposed thermal pad, operating from a single 3.3V supply over the commercial 0C to 70C temperature range. The device supports simultaneous SuperSpeed USB (5 Gbps) and high-speed or full-speed signaling on the upstream port, while each downstream port independently supports SuperSpeed, high-speed, full-speed, or low-speed connections, making it a flexible building block for hosts that must expose multiple downstream USB devices. A USB hub is a tier-1 interconnect device in the USB topology that expands one upstream port into multiple downstream ports while managing transaction translation, power distribution, and signaling at each speed node. The TUSB8040A1 family implements a USB 3.0 SuperSpeed transaction translator along with the classic USB 2.0 hub repeater logic on a single die, exposing configuration pins, GPIOs, and battery-charging controls so designers can scale the same part from low-cost consumer docks to high-port-count industrial hosts. Key features include support for USB 3.0 SuperSpeed on all four downstream ports, integrated USB 2.0 hub repeater logic, configurable downstream port power switching and over-current inputs, an I2C/SMBus slave interface for status and configuration, multi-status LED indicators, and pin-selectable SMBus or I2C address options. The 100-pin WQFN-MR footprint provides a compact thermal path through the exposed pad, allowing sustained 5 Gbps operation without external heatsinking in well-ventilated enclosures. Architecturally, the TUSB8040A1 combines a USB 3.0 physical layer capable of 5 Gbps serial signaling, a SuperSpeed transaction translator, a USB 2.0 high-speed hub controller, and an integrated power-management block that handles per-port VBUS switching and over-current fault reporting. The configuration strap pins, combined with the I2C/SMBus interface, allow firmware to control per-port battery-charging modes, compound hub behavior, and the device's dual-role flexibility. Typical applications include USB 3.0 docking stations, desktop and laptop port-replicators, industrial PCs with multiple USB peripherals, embedded platforms requiring USB-3 Vision or USB mass-storage fan-out, and embedded host boards for point-of-sale, kiosk, and test-and-measurement systems where a processor only exposes one upstream USB-3 port but the design requires multiple downstream USB-3 endpoints. When designing with the TUSB8040A1, follow the High-Speed PCB layout guidelines in the manufacturer datasheet: route the SuperSpeed differential pairs with 90 ohm differential impedance, place the 12 MHz crystal close to the XI/XO pins, and connect the exposed thermal pad to a solid ground plane. Per-port VBUS switches must be sized for the cumulative downstream load and protected against inrush faults to comply with USB-IF compliance testing. This page synthesizes distributor stock data, cross-reference alternatives, and practical PCB layout notes that go beyond the manufacturer datasheet, helping engineers select and integrate the TUSB8040A1RKMR quickly into new USB-3.0 host designs.