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Texas Instruments TUSB2036VF
- Part No.:
- TUSB2036VF
- Manufacturer:
- Texas Instruments
- Category:
- Controllers
- Package:
- 32-LQFP
- Datasheet:
-
TUSB2036VF.pdf
- Description:
- IC HUB CONTROLLER USB 2.0 32LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,057
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Product details
Overview
TUSB2036VF from Texas Instruments is a 3.3-V, 2- or 3-port USB 2.0 full-speed hub IC with integrated transceivers, programmable port count (via NP3 pin), dual clock source support (6-MHz crystal or 48-MHz external clock), and ganged/per-port power switching control - deployed in docking stations and embedded host systems requiring plug-and-play USB expansion.
For engineers reviewing the TUSB2036VF datasheet, TUSB2036VF pinout, TUSB2036VF application, or TUSB2036VF equivalent, key selection considerations include bus/self-powered mode configuration (BUSPWR), EEPROM-enabled VID/PID customization (EXTMEM/EEDATA/EECLK), DP0PUR-controlled dynamic pullup disable for bus/self-power switching, and OVRCUR/PWRON signal mapping for overcurrent and power-gating logic.
Technical Context
The TUSB2036VF implements a digital state machine-not firmware-based-enabling zero-host-driver dependency and guaranteed USB 2.0 compliance (TID #30220242). Its integrated full-speed/low-speed transceivers auto-adjust slew rate per attached device speed, while internal APLL (MODE = low) or bypassed clock path (MODE = high) supports flexible timing architecture.
Power management is hardware-configured via BUSPWR (power-source mode), EEDATA/GANGED (ganged vs. per-port OCP), and NPINT0/NPINT1 (permanent port attachment reporting in hub descriptor). The SUSPND output enables external logic power-down during USB suspend, and DP0PUR provides precise 15-ms timed disable of DP0 pullup resistor after reset or BUSPWR transition.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| USB Compliance | Full-speed hub per USB 2.0 spec; TID #30220242 certified - ensures interoperability without host stack modification. |
| Port Configuration | 2 or 3 downstream ports selectable via NP3 pin; NPINT0/NPINT1 define permanent attachment status for hub descriptor DeviceRemovable field. |
| Supply Voltage | 3.3 V ±10% (3.0–3.6 V); ICC = 40 mA typical in active mode, 1 μA in suspend - enables low-power embedded operation. |
| Downstream Speed Support | Full-speed (12 Mb/s) and low-speed (1.5 Mb/s) on all ports; automatic slew-rate adaptation eliminates manual speed negotiation logic. |
| Clock Input Options | 6-MHz crystal (XTAL1/XTAL2) with internal APLL → 48 MHz, or direct 48-MHz clock (XTAL1/CLK48) with APLL bypassed - supports suspend-aware crystal use or oscillator simplicity. |
| Overcurrent Handling | OVRCUR1–OVRCUR3 are active-low, noise-filtered inputs sampled every 2 ms; supports ganged or per-port detection per EEDATA/GANGED state. |
| Power Control Outputs | PWRON1–PWRON3 are 3.3-V push-pull, active-low outputs driving external power switches (e.g., TPS2044); eliminate external pullups and simplify PCB layout. |
Pinout & Package
Package: HLQFP-32 (7.00 mm × 7.00 mm, 0.8-mm pitch), JEDEC S-PQFP-G compliant - suitable for space-constrained industrial and docking applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| DP0/DM0 | Upstream differential data pair | Connects to host controller; forms root port interface with full-speed/low-speed receiver sensitivity (VID ≥ 0.2 V, VICR = 0.8–2.5 V). |
| DP1–DP3 / DM1–DM3 | Downstream differential data pairs | Support up to three USB peripheral ports; each pair auto-scales slew rate based on attached device speed. |
| BUSPWR | Power-source mode select | Active-low input: tied low for bus-powered mode (reports power-switched ports), tied high for self-powered mode (reports overcurrent protection). |
| NP3 | Port count configuration | Active-low input: logic 0 configures 3-port operation; logic 1 configures 2-port operation - sets total port count in hub descriptor. |
| EXTMEM | EEPROM interface enable | High disables EEPROM; pins 5 (EECLK) and 6 (EEDATA/GANGED) become GPIO or power-mode indicators instead of serial interface. |
| DP0PUR | DP0 pullup resistor disable | Open-drain output that floats for 15 ms after RESET assertion or BUSPWR change - enables clean bus/self-power dynamic switching circuitry. |
| SUSPND | Suspend status indicator | Active-high output signals USB suspend state to external logic for system-level power-down sequencing. |
| OCPROT/PWRSW | Mode-dependent status pin | In bus-powered mode: active-low OCPROT reports overcurrent protection implementation; in self-powered mode: active-low PWRSW reports port power switching capability. |
Key Features
| Feature | Design Value |
|---|---|
| No firmware required | Digital state machine architecture eliminates flash programming, bootloader, and USB stack dependencies - reduces BOM and qualification time. |
| Dynamic power-source switching | DP0PUR output enables hardware-controlled 3-ms DP0 pullup disable after reset/BUSPWR change - simplifies onboard bus/self-power arbitration without microcontroller intervention. |
| Ganged or per-port overcurrent handling | EEDATA/GANGED pin selects detection mode; OVRCUR inputs include 2-ms sampling + dual-sample validation - prevents false trips from voltage spikes. |
| Push-pull PWRON outputs | Eliminates external pullup resistors on PWRON1–PWRON3 - reduces component count and improves rise/fall time consistency for external power switches. |
| Configurable VID/PID via EEPROM | EXTMEM low enables 2-wire serial interface (EECLK/EEDATA) for custom vendor/product IDs - replaces generic "General Purpose USB Hub" enumeration message. |
| Noise-immune OVRCUR inputs | Internal filtering rejects transients < 2 ms; each OVRCURn requires two consecutive valid samples before triggering - enhances reliability in electrically noisy docking environments. |
Applications
| Desktop Docking Station | Industrial USB Host Adapter |
|---|---|
|
Use Scenario: Adds three USB 2.0 downstream ports to a laptop via single upstream connection, supporting keyboards, storage, and HID peripherals simultaneously. IC Role / Device Role / Timing Role: USB 2.0 full-speed hub IC managing packet routing, transaction translation, and power delivery coordination between host and peripherals. Use Value: Enables compact, driverless expansion with configurable port count (2/3) and bus/self-powered flexibility - critical for thermally constrained dock enclosures. |
Use Scenario: Integrates into an industrial PLC or HMI to provide isolated, robust USB connectivity for configuration tools, barcode scanners, or firmware update interfaces. IC Role / Device Role / Timing Role: USB repeater/hub IC providing signal integrity-preserving differential buffering and deterministic suspend/resume signaling for real-time control systems. Use Value: SUSPND output synchronizes external power-down; OVRCUR filtering prevents spurious shutdowns in EMI-heavy factory floors. |
| Embedded System Expansion Module | USB-C Multiport Adapter Core |
|
Use Scenario: Serves as the USB hub engine in a credit-card-sized module adding legacy USB-A ports to a SoM-based edge gateway or IoT gateway. IC Role / Device Role / Timing Role: Low-power (1 μA suspend current), 3.3-V CMOS hub IC with crystal-based clocking - optimized for battery-backed or energy-harvested deployments. Use Value: MODE pin allows 6-MHz crystal use for true suspend-capable operation; eliminates need for external clock generator or oscillator stop logic. |
Use Scenario: Functions as the USB 2.0 hub core inside a USB-C to USB-A/HDMI/Ethernet adapter, sharing bandwidth across multiple legacy peripherals. IC Role / Device Role / Timing Role: Configurable 2- or 3-port hub IC interfacing with USB-C CC logic and PD controller to manage downstream port allocation and power reporting. Use Value: NPINT0/NPINT1 pins report permanent attachment status to host OS, enabling accurate DeviceRemovable field in hub descriptor - essential for macOS/Windows plug-and-play behavior. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar USB hub applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMSC USB2514B | 4-port, integrated 5-V power switches; requires external EEPROM for VID/PID; no DP0PUR pin; 5-V tolerant I/O. | Higher port count and integrated power FETs reduce external component count but increase thermal load and board area. | Choose when needing >3 ports or built-in 5-V switching - not drop-in compatible due to pinout, power architecture, and lack of DP0PUR. |
| Microchip USB5744 | 4-port, USB 2.0 hub with integrated USB PHY, spread-spectrum clocking, and advanced power gating; supports USB Battery Charging 1.2. | Targets high-reliability computing and automotive infotainment where ESD robustness (±8 kV HBM) and BC1.2 charging are mandatory. | Choose for enhanced ESD rating and BC1.2 support; not functionally equivalent due to different clocking, suspend behavior, and descriptor reporting logic. |
Compared with SMSC USB2514B and Microchip USB5744, the TUSB2036VF offers minimal external component count for 2–3 port designs, deterministic DP0 pullup control for dynamic power sourcing, and lower active current - making it optimal for cost-sensitive, space-constrained, and suspend-critical embedded hubs.
Availability
TUSB2036VF is available at Aetrix Electronics and suitable for desktop docking stations, industrial USB host adapters, embedded system expansion modules, and USB-C multiport adapters requiring stable component supply, long-term lifecycle support, and TI-qualified production-grade silicon.
Supply support for TUSB2036VF includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor company headquartered in Dallas, Texas, delivering analog and embedded processing solutions for industrial, automotive, and personal electronics markets.
The TUSB2036VF belongs to TI's USB interface portfolio, designed specifically for cost-effective, firmware-free USB 2.0 hub implementations in resource-constrained embedded systems and peripheral expansion products.
FAQ
What is the primary function of the DP0PUR pin on the TUSB2036VF?
The DP0PUR pin on the TUSB2036VF is an open-drain output that disables the DP0 pullup resistor for 15 ms after a system reset or any logic-level change on the BUSPWR pin. This precise timing enables reliable onboard bus/self-power dynamic switching circuitry without requiring external timers or microcontrollers. The TUSB2036VF uses this feature to ensure clean enumeration transitions when the hub changes power-source mode, directly supporting USB specification-compliant behavior in docking and adapter applications.
Does the TUSB2036VF require firmware or a microcontroller to operate?
No, the TUSB2036VF does not require firmware or a microcontroller. It implements a dedicated digital state machine for USB protocol handling, making it fully autonomous. All USB enumeration, packet routing, suspend/resume signaling, and port management are handled in hardware. This design eliminates boot code, flash memory, and USB stack integration effort - the TUSB2036VF works seamlessly with any host OS that supports standard USB hub class drivers, including Windows, Linux, and macOS.
How does the TUSB2036VF support both bus-powered and self-powered configurations?
The TUSB2036VF supports both configurations via the BUSPWR pin: pulled low for bus-powered mode (reporting power-switched downstream ports), pulled high for self-powered mode (reporting overcurrent protection). The OCPROT/PWRSW pin adapts its function accordingly - indicating overcurrent protection status in bus-powered mode or power-switching capability in self-powered mode. The TUSB2036VF enforces USB 2.0 compliance by automatically configuring hub descriptor fields (wHubCharacteristics, bPwrOn2PwrGood) based on these inputs, ensuring correct host enumeration regardless of power architecture.
Can the TUSB2036VF be used with a 48-MHz oscillator instead of a crystal?
Yes, the TUSB2036VF supports a 48-MHz external clock applied to the XTAL1/CLK48 pin when the MODE pin is held high, which bypasses the internal APLL and oscillator cell. In this configuration, XTAL2 must remain unconnected. However, using an oscillator disables true low-power suspend because most oscillators cannot be stopped while powered - unlike crystals, which allow clock gating during suspend. For suspend-critical applications, a 6-MHz crystal with MODE = low is recommended; the TUSB2036VF maintains full functionality in either mode.
What is the role of the NPINT0 and NPINT1 pins on the TUSB2036VF?
The NPINT0 and NPINT1 pins on the TUSB2036VF configure the DeviceRemovable field in the USB hub descriptor to indicate which downstream ports host permanently attached devices. Their 2-bit encoding (00 to 11) defines port availability and compound-device status - for example, NPINT0=1/NPINT1=0 indicates ports 1 and 2 are permanently attached, while port 3 remains user-accessible. This information is reported to the host OS during enumeration, enabling accurate plug-and-play behavior and preventing unnecessary port re-enumeration in fixed-function systems. The TUSB2036VF uses these pins to ensure correct descriptor compliance without software intervention.
TUSB2036VF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 32-LQFP
- Programmable:
- Not Verified
- Protocol:
- USB
- Function:
- Hub Controller
- Interface:
- USB
- Standards:
- USB 2.0
- Voltage - Supply:
- 3V ~ 3.6V
- Current - Supply:
- 40mA
- Operating Temperature:
- 0°C ~ 70°C
- Supplier Device Package:
- 32-LQFP (7x7)
- Grade:
- -
- Qualification:
- -
TUSB2036VF FAQ
1.How can I place an order for TUSB2036VF through Aetrix?
Please submit a Request for Quotation (RFQ) for TUSB2036VF on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for TUSB2036VF reliable?
The price and inventory of TUSB2036VF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TUSB2036VF is usually 5 days.
3.What payment methods are accepted for TUSB2036VF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TUSB2036VF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TUSB2036VF?
TUSB2036VF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TUSB2036VF order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for TUSB2036VF?
For technical support, including TUSB2036VF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TUSB2036VF requirements.
6.How does Aetrix verify that TUSB2036VF is sourced from the original manufacturer or authorized distributors?
All TUSB2036VF products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TUSB2036VF meets industry standards.
7.What is the process for return or replacement of TUSB2036VF?
All TUSB2036VF units undergo pre-shipment inspection (PSI). If there is an issue with TUSB2036VF, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The TUSB2036VF part is unused and in its original packaging.
Return procedure for TUSB2036VF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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