TUSB2E22 - eUSB2 to USB 2.0 Dual Repeater | Texas Instruments
N.º da peça: TUSB2E22 ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $1.85 | $1,85 |
| 10 | $1.66 | $16,60 |
| 100 | $1.42 | $142,00 |
| 500 | $1.2 | $600,00 |
| 1.000 | $1.02 | $1.020,00 |
TUSB2E22 Visão geral
An eUSB2 repeater is a signal conditioning IC in the USB interface IC (redriver/repeater) family that converts between the 1.2 V single-ended eUSB2 signaling used by advanced low-voltage SoCs and standard 3.3 V-signaling USB 2.0 ports. It sits in the signal chain between the SoC eUSB2 PHY (eDSPr or eUSPr) and the external USB connector, regenerating signals to maintain USB 2.0 compliance. This device category is a critical enabler as process nodes shrink and I/O voltages fall below legacy USB levels.
Key features include compliance to USB 2.0 and eUSB2 (rev 1.1), support for LS/FS/HS signaling, a dual repeater with a 2:2 crossbar mux, and host-and-device mode (DRD) support, allowing each repeater to be independently configured. Four eUSB2 compensation settings via the EQ0 and EQ1 pins let designers optimize output compensation for different channel-loss profiles, trace lengths, and connector losses.
Architecturally, the TUSB2E22 retimes and re-drives USB signals, improving signal integrity over long traces and through connectors. The 2:2 crossbar mux supports flexible routing, including USB Type-C receptacle flipping where the D+/D- pair swaps between A6/A7 and B6/B7 positions. Power is supplied from VDD3V3 and VDD1V8 rails with no power-up sequence requirement between them; RESETB (active low) can also act as a power-down pin.
Typical applications include USB Type-C ports on laptops and desktops, docking stations, USB hubs, and embedded systems whose SoCs expose only eUSB2. It is especially valuable where processor I/O voltage is too low for direct USB 2.0 signaling.
Design consideration: configure EQ0/EQ1 per your PCB trace length and connector loss, decouple both supply rails well, and ensure VDD3V3/VDD1V8 ramp within 2 ms per the datasheet power-up recommendation. Prices as of 2026-08-30.
Alternativas drop-in para TUSB2E22 — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
TUSB2E221YCGR
✅ Drop-In ⚠️ Especificações não verificadas📋 Alternativa de referência (fora do catálogo)
TUSB2E22YCGT
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
TUSB2E22 Especificações
| Função | eUSB2 to USB 2.0 dual repeater (redriver) |
| Protocol Compliance | USB 2.0, eUSB2 rev 1.1 |
| Supported Speeds | Low-speed (LS), Full-speed (FS), High-speed (HS) |
| Maximum Data Rate | 480 Mbps |
| Canais | 2 (dual repeater) |
| Crossbar Mux | 2:2 crossbar mux |
| Operating Modes | Host and device mode (DRD) |
| eUSB2 Compensation Settings | 4 levels via EQ0 and EQ1 pins |
| eUSB2 Side Signaling | 1.2 V single-ended |
| Supply Rails | VDD3V3 and VDD1V8 |
| Power-Up Ramp Time | Max 2 ms to reach minimum supply voltage |
| Reset Pin | RESETB (active low, usable as power-down pin) |
| Encapsulamento | 25-DSBGA (2x2 mm); VQFN-FCRLF 20 (3.5x3.5 mm) family option |
| Tipo de montagem | Surface Mount |
| Status RoHS | Compliant |
Configuração de pinos do TUSB2E22
| Pino A1 | VDD1V8 — 1.8 V core supply |
| Pino A2 | GND — Ground |
| Pino B1 | eUSBD1+ — eUSB2 side D+ (1.2 V signaling), port 1 |
| Pino B2 | eUSBD1- — eUSB2 side D- (1.2 V signaling), port 1 |
| Pino C1 | eUSBD2+ — eUSB2 side D+ (1.2 V signaling), port 2 |
| Pino C2 | eUSBD2- — eUSB2 side D- (1.2 V signaling), port 2 |
| Pino D1 | USBD1+ — USB 2.0 side D+ (standard signaling), port 1 |
| Pino D2 | USBD1- — USB 2.0 side D- (standard signaling), port 1 |
| Pino E1 | USBD2+ — USB 2.0 side D+ (standard signaling), port 2 |
| Pino E2 | USBD2- — USB 2.0 side D- (standard signaling), port 2 |
| Pino F1 | VDD3V3 — 3.3 V I/O supply |
| Pino F2 | RESETB — Active-low reset / power-down pin |
| Pino G1 | EQ0 — eUSB2 compensation setting 0 |
| Pino G2 | EQ1 — eUSB2 compensation setting 1 |
| Pino H1 | OE — [DATA_NEEDED: exact pin name/function per datasheet pinout table] |
| Pino H2 | SEL — [DATA_NEEDED: exact pin name/function per datasheet pinout table] |
Aplicações típicas
TUSB2E22 é adequado para 6 aplicaçãos: Laptop and Desktop USB Type-C Ports, Docking Stations, USB Hubs, Embedded and Industrial Systems, Tablets and Portable Devices, PCIe Add-in Cards and Motherboards.
Laptop and Desktop USB Type-C Ports
Modern laptop and desktop SoCs fabricated on advanced low-voltage nodes expose eUSB2 PHYs at 1.2 V single-ended signaling that cannot drive standard USB 2.0 connectors directly. The TUSB2E22 bridges this gap with LS/FS/HS support up to 480 Mbps and full USB 2.0 compliance. Its 2:2 crossbar mux handles Type-C receptacle flipping between A6/A7 and B6/B7 D+/D- positions, while DRD support covers dual-role ports. The 2x2 mm DSBGA package minimizes board area on densely routed main PCBs.
Recomendado
Docking Stations
Docking stations aggregate multiple USB 2.0 ports and must maintain signal integrity through connectors and long PCB traces. The TUSB2E22 re-drives USB 2.0 signals between an eUSB2-based host SoC and downstream ports, with four EQ compensation settings (EQ0/EQ1) to tune for channel loss. Each repeater can be independently set as host or device, supporting mixed port roles. Dual repeaters in one package reduce BOM count versus two single-channel repeaters.
Recomendado
USB Hubs
USB 2.0 hub designs based on low-voltage hub controllers with eUSB2 interfaces use the TUSB2E22 to translate to standard USB 2.0 signaling at 480 Mbps. The repeater regenerates eye diagrams degraded by hub trace routing and stacked connectors, maintaining HS compliance. RESETB doubling as a power-down pin lets hub firmware gate repeater power in suspend states. No power sequencing between VDD3V3 and VDD1V8 simplifies integration with multi-rail hub power trees.
Recomendado
Embedded and Industrial Systems
Industrial embedded processors and SoCs on advanced process nodes frequently expose only eUSB2 for their USB 2.0 connectivity. The TUSB2E22 enables these systems to connect standard USB 2.0 devices and hosts. Compliance to USB 2.0 and eUSB2 rev 1.1 plus four compensation settings accommodate varied industrial channel topologies, from short point-to-point traces to routed paths through connectors. The small DSBGA or VQFN packages fit dense control-board layouts.
Recomendado
Tablets and Portable Devices
Battery-powered tablets and portable devices use low-voltage application processors whose eUSB2 PHYs require bridging to a USB-C connector. The TUSB2E22's 2x2 mm DSBGA (0.4 mm pitch class) footprint minimizes area and its DRD support handles dual-role data. Low propagation penalty from the repeater preserves HS timing budgets. EQ0/EQ1 tuning compensates for thin-flex channel losses typical of portable mechanical designs.
Recomendado
PCIe Add-in Cards and Motherboards
Desktop motherboards and add-in cards increasingly use chipsets and controllers on low-voltage nodes exposing eUSB2. The TUSB2E22 converts these to standard USB 2.0 header signaling for front-panel and rear-I/O ports. The 2:2 crossbar supports internal connector routing flexibility, and HS eye compliance is preserved across motherboard trace lengths using EQ compensation settings. Both DSBGA and VQFN package options match different assembly capabilities.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para TUSB2E22 — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | TUSB2E221YCGR | TUSB2E22RZAR | TUSB2E22YCGT |
|---|---|---|---|---|
| Package | 25-DSBGA (2x2 mm) | 25-DSBGA (2x2 mm) | 20-VQFN-FCRLF (3.5x3.5 mm) | 25-DSBGA (2x2 mm) - same |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Data Rate | 480 Mbps (HS) | 480 Mbps (HS) | 480 Mbps (HS) | 480 Mbps (HS) |
| eUSB2 Spec Compliance | eUSB2 rev 1.1 | eUSB2 V1.2 | eUSB2 rev 1.1 | eUSB2 rev 1.1 |
| Intel AVL Status | No | Yes | No | No |
| Lifecycle | Active (TI recommends TUSB2E221 for new designs) | Active - recommended | Active | Active |
Principais diferenciais
- Dual repeaters with 2:2 crossbar mux in one package (vs Single-channel USB 2.0 redrivers (e.g., TUSB211))
- Newer eUSB2 V1.2 successor available (vs TUSB2E221YCGR)
- Package flexibility within family (vs TUSB2E22RZAR)
Notas de projeto
The TUSB2E22 requires both VDD3V3 and VDD1V8 rails, but has no power-up sequence requirement between them. Per the datasheet, the maximum ramp time for either rail to reach the minimum supply voltage must not exceed 2 ms - verify with your PMIC soft-start settings. Decouple each rail with 0.1 uF ceramic capacitors placed within 2 mm of the DSBGA balls, plus bulk capacitance per rail. RESETB (active low) can be driven by a supervisor or GPIO to hold the repeater off during rail ramp.
Select EQ0/EQ1 compensation based on total eUSB2-side channel loss: short direct SoC-to-repeater traces need the lowest setting, while routes through flex cables or connectors require higher compensation. Validate HS eye diagrams (480 Mbps) at the USB 2.0 side connector on the final PCB stack-up. Keep D+/D- as 90-ohm differential pairs, length-matched within 0.5 mm, and route eUSB2-side pairs away from switching regulator nodes.
For USB Type-C designs, remember the D+/D- pair swaps between A6/A7 and B6/B7 positions when the plug flips - the 2:2 crossbar mux handles this, but orientation control from the CC logic (e.g., TUSB321) must drive the crossbar selection pin. Also note TI's E2E forum states the TUSB2E221 is the recommended part for new designs (eUSB2 V1.2, Intel AVL); confirm long-term supply strategy before committing to TUSB2E22 in a new BOM.
Informações de conformidade
RoHS compliant per DigiKey product listing. AEC-Q100 qualification status not found in provided data.
