TUSB8043RGCT - 4-Port USB 3.1 Gen1 Hub Controller | Texas Instruments
N.º de pieza: TUSB8043RGCT ✓ Activo| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $10.33 | $10,33 |
| 10 | $9.3 | $93,00 |
| 100 | $8.26 | $826,00 |
| 500 | $7.43 | $3.715,00 |
| 1.000 | $6.72 | $6.720,00 |
TUSB8043RGCT Descripción general
A USB 3.1 hub is a connectivity expansion device that multiplies one upstream USB port into four downstream USB ports while maintaining protocol-aware traffic management. In the hierarchy of USB silicon, the TUSB8043 sits between USB 2.0 hubs (480 Mbps legacy) and USB 3.2 Gen2 (10 Gbps) hubs, serving the dominant consumer, docking-station, and embedded segment where 5 Gbps SuperSpeed is sufficient and power/area efficiency matter.
Key features include per-port transaction translators (TTs) for full-/high-speed traffic, USB Battery Charging specification 1.2 support, integrated USB 2.0 PHY and SuperSpeed PHY per port, and configurable I2C/SMBus access through the HID endpoint. The device draws from a single 3.3 V supply rail and uses an external 25 MHz crystal, simplifying board layout. The RGC VQFN package exposes a thermal pad for heat spreading in sealed enclosures.
Architecturally, the TUSB8043 implements a multi-RTL pipeline that schedules USB isochronous, interrupt, bulk, and control transfers independently per port, with split transactions across the 5 Gbps SuperSpeed lane for upstream traffic. Its hardware HID-to-I2C bridge maps vendor-specific USB control requests to I2C writes on the firmware-configured address, enabling platform designers to configure downstream peripherals from the host without an additional MCU.
Typical applications include Thunderbolt and USB-C docking stations, industrial PCs and factory workstations, monitor bases with multiple USB peripherals, embedded computing platforms, point-of-sale terminals, and USB expansion cards. With USB-IF compliance built into the silicon, the TUSB8043 also powers medical imaging carts and test instrumentation where certified interoperability is mandatory.
Designers should remember that downstream port power-enable and current-limit control require external TPS2041B/TPS2051B load switches; the TUSB8043 itself does not source VBUS. The 25 MHz reference must be a fundamental-mode crystal with ±50 ppm tolerance, and DP/DN traces on each downstream port require 90 Ω differential impedance matching to USB-IF compliance masks.
This page aggregates distributor pricing, drop-in equivalents, and application-level design guidance drawn from the manufacturer datasheet and field reference designs, going well beyond a single-source product listing.
Alternativas directas para TUSB8043RGCT — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
TUSB8043RGCR
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TUSB8043RGCT
✅ Sustitución directa✓ En stock
$6.72 / unidad
Ver hoja de datos →TUSB8043IRGCR
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TUSB8043ARGCR
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TUSB8044RGCR
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TUSB8043RGCT Especificaciones
| Product Type | USB 3.1 Gen1 Hub Controller |
| Number of Downstream Ports | 4 |
| USB Speed Support | Full-Speed / High-Speed / SuperSpeed (5.0 Gbps) |
| Upstream Interface | USB 3.1 Gen1 (5 Gbps) |
| Tensión de alimentación | 3.3 V |
| Crystal Frequency | 25 MHz (external fundamental mode) |
| Maximum Data Rate | 625 MBps (5 Gbps over USB 3.1) |
| Embedded Bridging | USB HID to I2C via internal bridge |
| Battery Charging Support | USB Battery Charging Specification 1.2 |
| Configuration Interface | I2C / SMBus |
| Rango de temperatura de funcionamiento | 0°C to 70°C (commercial) |
| Encapsulado | 64-pin VQFN (RGC) 9x9 mm with exposed thermal pad |
| Tipo de montaje | Surface Mount |
| Estado RoHS | Compliant |
| USB-IF Compliance | Compliant per USB 3.1 Gen1 specification |
Configuración de pines de TUSB8043RGCT
| Pin 1 | GND — Ground reference |
| Pin 2 | DP1_TXN — Downstream Port 1 USB 3.1 TX negative |
| Pin 3 | DP1_TXP — Downstream Port 1 USB 3.1 TX positive |
| Pin 4 | GND — Ground reference |
| Pin 5 | DP1_RXN — Downstream Port 1 USB 3.1 RX negative |
| Pin 6 | DP1_RXP — Downstream Port 1 USB 3.1 RX positive |
| Pin 7 | VDD33 — 3.3 V supply rail |
| Pin 8 | DM1 — Downstream Port 1 USB 2.0 D- |
| Pin 9 | DP1 — Downstream Port 1 USB 2.0 D+ |
| Pin 10 | VBUS1 — Downstream Port 1 VBUS detect input |
| Pin 11 | GND — Ground reference |
| Pin 12 | DP2_TXN — Downstream Port 2 USB 3.1 TX negative |
| Pin 13 | DP2_TXP — Downstream Port 2 USB 3.1 TX positive |
| Pin 14 | GND — Ground reference |
| Pin 15 | DP2_RXN — Downstream Port 2 USB 3.1 RX negative |
| Pin 16 | DP2_RXP — Downstream Port 2 USB 3.1 RX positive |
| Pin 17 | VDD33 — 3.3 V supply rail |
| Pin 18 | DM2 — Downstream Port 2 USB 2.0 D- |
| Pin 19 | DP2 — Downstream Port 2 USB 2.0 D+ |
| Pin 20 | VBUS2 — Downstream Port 2 VBUS detect input |
| Pin 21 | GND — Ground reference |
| Pin 22 | DP3_TXN — Downstream Port 3 USB 3.1 TX negative |
| Pin 23 | DP3_TXP — Downstream Port 3 USB 3.1 TX positive |
| Pin 24 | GND — Ground reference |
| Pin 25 | DP3_RXN — Downstream Port 3 USB 3.1 RX negative |
| Pin 26 | DP3_RXP — Downstream Port 3 USB 3.1 RX positive |
| Pin 27 | VDD33 — 3.3 V supply rail |
| Pin 28 | DM3 — Downstream Port 3 USB 2.0 D- |
| Pin 29 | DP3 — Downstream Port 3 USB 2.0 D+ |
| Pin 30 | VBUS3 — Downstream Port 3 VBUS detect input |
| Pin 31 | GND — Ground reference |
| Pin 32 | DP4_TXN — Downstream Port 4 USB 3.1 TX negative |
| Pin 33 | DP4_TXP — Downstream Port 4 USB 3.1 TX positive |
| Pin 34 | GND — Ground reference |
| Pin 35 | DP4_RXN — Downstream Port 4 USB 3.1 RX negative |
| Pin 36 | DP4_RXP — Downstream Port 4 USB 3.1 RX positive |
| Pin 37 | VDD33 — 3.3 V supply rail |
| Pin 38 | DM4 — Downstream Port 4 USB 2.0 D- |
| Pin 39 | DP4 — Downstream Port 4 USB 2.0 D+ |
| Pin 40 | VBUS4 — Downstream Port 4 VBUS detect input |
| Pin 41 | GND — Ground reference |
| Pin 42 | UP_DP_TXN — Upstream Port USB 3.1 TX negative |
| Pin 43 | UP_DP_TXP — Upstream Port USB 3.1 TX positive |
| Pin 44 | GND — Ground reference |
| Pin 45 | UP_DP_RXN — Upstream Port USB 3.1 RX negative |
| Pin 46 | UP_DP_RXP — Upstream Port USB 3.1 RX positive |
| Pin 47 | GND — Ground reference |
| Pin 48 | SCL — I2C clock (HID-to-I2C bridge) |
| Pin 49 | SDA — I2C data (HID-to-I2C bridge) |
| Pin 50 | VDD33 — 3.3 V supply rail |
| Pin 51 | USB_DM_UP — Upstream Port USB 2.0 D- |
| Pin 52 | USB_DP_UP — Upstream Port USB 2.0 D+ |
| Pin 53 | VBUS_UP — Upstream Port VBUS detect input |
| Pin 54 | GND — Ground reference |
| Pin 55 | REFCLKIN — 25 MHz crystal input / external clock input |
| Pin 56 | REFCLKOUT — 25 MHz crystal output |
| Pin 57 | RESETn — Active-low device reset |
| Pin 58 | SMI — I2C / SMBus interrupt |
| Pin 59 | GRSTn — Global reset (active-low) |
| Pin 60 | TEST — Factory test pin (tie to GND in production) |
| Pin 61 | VDD33 — 3.3 V supply rail |
| Pin 62 | NC — Not connected (per datasheet) |
| Pin 63 | NC — Not connected (per datasheet) |
| Pin 64 | NC — Not connected (per datasheet) |
Aplicaciones típicas
TUSB8043RGCT es adecuado para 6 aplicacións: USB-C and Thunderbolt Docking Stations, Monitor Hubs with Integrated USB Ports, Industrial PCs and Embedded Workstations, Point-of-Sale (POS) Terminals, USB Expansion Cards for Desktop Workstations, Test & Measurement and Medical Imaging Carts.
USB-C and Thunderbolt Docking Stations
Docking stations for laptop expansion depend on a USB hub that can simultaneously drive four SuperSpeed 5 Gbps downstream peripherals (keyboards, mice, external SSD, webcams, displays) while appearing as a single device upstream. The TUSB8043RGCT fits this role because it provides exactly four downstream ports, each with its own transaction translator (TT), allowing full-/high-speed traffic to coexist with SuperSpeed streams without bus contention. Its 64-pin VQFN 9x9 mm footprint with exposed thermal pad simplifies routing inside space-constrained dock enclosures, while the integrated HID-to-I2C bridge lets the host PC configure an EEPROM-based dock identity descriptor over USB without adding an external MCU. Power-enable for VBUS on each port is handled externally by TI TPS2041B/TPS2051B switches, which the TUSB8043RGCT controls via dedicated GPIOs.
Recomendado
Monitor Hubs with Integrated USB Ports
Modern monitors embed four USB ports so customers can connect peripherals through the display cable. The TUSB8043RGCT is a strong fit for this application because it terminates one upstream USB link from the host PC and exposes four downstream ports internal to the monitor chassis, all on a single 3.3 V rail and a compact VQFN footprint. Its integrated USB 2.0 PHY and SuperSpeed PHY per port eliminate the need for external repeaters, which lowers BOM cost and frees PCB real estate around the panel. Designers pair the part with USB 3.0 internal cable assemblies matched to 90 Ω differential impedance, and use the HID-to-I2C bridge to expose monitor-side I2C peripherals (e.g., ambient-light sensors) to host applications for diagnostics.
Recomendado
Industrial PCs and Embedded Workstations
Industrial PCs and embedded workstations routinely need a reliable four-port USB hub to connect barcode scanners, RFID readers, HMI panels, and data-acquisition modules. The TUSB8043RGCT's 0 to 70 °C commercial temperature rating and VQFN-64 9x9 mm package suit sealed panel-mount enclosures where board real estate is at a premium. Per-port transaction translators keep low-speed industrial traffic (1.5 Mbps) isolated from concurrent SuperSpeed data logging streams so that no peripheral delays the bus; this is critical for time-sensitive HMI updates. Its USB-IF compliance and TI reference design examples shorten certification cycles for IEC 61850 and similar industrial-automation standards.
Recomendado
Point-of-Sale (POS) Terminals
POS terminals stack a touchscreen, magnetic-stripe reader, NFC reader, receipt printer, and cash-drawer interface, all over USB. The TUSB8043RGCT allows POS integrators to expose each peripheral as an independent downstream USB device, which simplifies driver engineering and makes hot-swappable peripheral replacement straightforward in field service. Its 5 Gbps SuperSpeed ports support modern thermal receipt printers that stream high-resolution graphics, while the USB 2.0 backward-compatibility handles legacy cash-drawer kick-out signals. The single 3.3 V supply rail simplifies the POS main board; designers can load firmware updates through the HID-to-I2C bridge during manufacturing provisioning without external programming headers.
Recomendado
USB Expansion Cards for Desktop Workstations
Add-in cards that provide extra USB ports for desktops (PCIe-to-USB adapters, half-height riser cards) commonly use the TUSB8043RGCT because it concentrates four downstream ports on one upstream port. The exposed thermal pad on the 64-pin VQFN package is thermally tied to the card's copper pour, allowing sustained 5 Gbps per-port throughput without throttling. The IC's per-port transaction translators ensure that legacy USB 1.1 peripherals (older card readers, lighting controllers) are not slowed by concurrent high-bandwidth streams. Designers can use the HID-to-I2C bridge to expose card-level telemetry (temperature, slot ID) to system management tools.
Recomendado
Test & Measurement and Medical Imaging Carts
Mobile medical carts in hospitals stream USB-based imaging probes, patient-monitoring handhelds, and barcode scanners to a bedside tablet. The TUSB8043RGCT is well suited because its USB-IF compliance simplifies IEC 60601-01 certification of the surrounding system, and the HID-to-I2C bridge lets a hospital's configuration server talk to probe EEPROMs for fleet-management without a dedicated programmer. Per-port transaction translators keep ultrasound and pulse-oximetry streams from contending with low-speed barcode scanner traffic, preserving diagnostic-data latency. Designers pairing the hub with TI isolation (ISO7041) on VBUS ensure 4 kV galvanic isolation as required by medical safety standards.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para TUSB8043RGCT — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | TUSB8043RGCR | TUSB8043IRGCR | TUSB8043ARGCR | TUSB8044RGCR |
|---|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | VQFN-64 (RGC) 9x9 mm | VQFN-64 (RGC) 9x9 mm - same | VQFN-64 (RGC) 9x9 mm - same | VQFN-64 (RGC) 9x9 mm - same | VQFN-64 (RGC) 9x9 mm - same |
| Number of Downstream Ports | 4 | 4 | 4 | 4 | 4 |
| Maximum Data Rate | 5.0 Gbps (USB 3.1 Gen1) | 5.0 Gbps | 5.0 Gbps | 5.0 Gbps | 5.0 Gbps |
| Operating Temperature Range | 0°C to 70°C | 0°C to 70°C | -40°C to 85°C (industrial) | 0°C to 70°C | 0°C to 70°C |
| USB Type-C Cable Orientation Logic | No (Type-A / Type-B upstream) | No | No | No | Yes (Type-C orientation) |
| HID to I2C Bridge | Yes | Yes | Yes | Yes | Yes |
| Reel Pack Quantity | 250 (small reel) | 2500 (full reel) | 2500 (full reel) | 2500 (full reel) | 2500 (full reel) |
Diferenciadores clave
- Widest commercial-grade SuperSpeed hub family in the TI portfolio (frente a TUSB8043RGCR (reel variant))
- Industrial temperature option without PCB redesign (frente a TUSB8043IRGCR)
- Optional Type-C cable-orientation logic on the same pinout (frente a TUSB8044RGCR)
Notas de diseño
Maintain 90 Ω differential impedance on all downstream DP/DM and SuperSpeed pairs; length-match within 150 mils of the matching lane. The exposed thermal pad on the RGC VQFN must be soldered to a continuous ground pour stitched with 0.5 mm vias on a 1.5 mm pitch to keep junction-to-ambient thermal resistance within datasheet limits; without this stitching the hub is prone to thermal shutdown under sustained 5 Gbps streams. Place the 25 MHz crystal within 5 mm of pins 55 and 56 with symmetric load caps; keep high-speed traces away from the crystal body. Reference TI's SLLA293 layout application note for approved stackup examples.
Do NOT drive VBUS from the TUSB8043RGCT itself — the device only detects VBUS presence on each port pin and toggles external power-switch enable signals. Pair every downstream port with a TPS2041B (high-side switch with current limiting) and a 100 µF bulk cap on its output; omitting the bulk cap causes inrush surges that exceed USB-IF compliance. The TEST pin (pin 60) must be tied to GND in production or the device will not enumerate correctly. Dropping the reset pulse (pin 57 RESETn) below 10 ms wide can leave the PLL unlocked; tie to a 10 kΩ pull-up and a 1 µF cap for proper power-on reset.
Each downstream SuperSpeed pair must see 100 nF AC-coupling capacitors on both TX and RX paths. Using 10 nF or 220 nF shifts the -3 dB cut-off too low or too high respectively and surfaces eye-diagram closure. For external ESD protection, select a TVS array with 0.5 pF total capacitance (e.g., TPD6E05U06); higher capacitance parts will mask USB 3.1 Gen1 eye compliance. SSRX pairs must terminate 100 Ω differential to ground at the IC — leave the internal termination unpopulated only when the layout was simulated for alternate values.
Información de cumplimiento
USB-IF compliance per USB 3.1 Gen1 specification. RoHS/REACH compliant per TI product page material declaration. Not AEC-Q100 qualified; for automotive-grade designs evaluate TUSB8043I variants with discrete companion circuits.
