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Texas Instruments TUSB2070PT
- Part No.:
- TUSB2070PT
- Manufacturer:
- Texas Instruments
- Category:
- Controllers
- Package:
- 48-LQFP
- Datasheet:
-
TUSB2070PT.pdf
- Description:
- IC USB 7-PORT HUB 48-LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:31,337
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Product details
Overview
TUSB2070PT from Texas Instruments is a 7-port USB 1.0 hub IC with integrated transceivers, supporting both bus-powered (4 downstream ports) and self-powered (7 downstream ports) configurations, 3.3-V operation, 48-MHz crystal/oscillator clock input, and per-port or ganged power switching - deployed in desktop peripherals, industrial docking stations, and embedded host systems.
For engineers reviewing the TUSB2070PT datasheet, TUSB2070PT pinout, TUSB2070PT application, or TUSB2070PT equivalent, key selection considerations include USB 1.0 compliance, dual power mode support, suspend current of 1 µA, 48-pin TQFP package, and explicit port-level overcurrent reporting via seven OVRCUR inputs.
Technical Context
The TUSB2070PT implements a USB 1.0-compliant hub controller with integrated upstream and seven downstream transceivers, full- and low-speed auto-sensing on all ports, and frame timing logic synchronized to a 48-MHz reference clock. It features dedicated SUSPND output for external power-down control and OSCOFF input to disable internal oscillator during test.
Power management is configurable via BUSPWR (active-low power source select) and GANGED (per-port vs. ganged switching mode) TTL inputs. All seven PWRON outputs are open-drain, active-low, and support external power switches like TPS2014/TPS2015; OVRCUR inputs are active-low TTL with hysteresis for overcurrent detection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| USB Compliance | USB Specification v1.0 - ensures interoperability with legacy USB 1.0 hosts and peripherals without enumeration or signaling issues. |
| Downstream Ports | 7 total; only ports 1–4 active in bus-powered mode - requires self-powered configuration to enable full 7-port functionality. |
| Supply Voltage | 3.3 V ±10% (3.0–3.6 V) - mandates dedicated 3.3-V LDO regulation; not 5-V tolerant on I/Os except as specified for USB data lines. |
| Suspend Current | 1 µA typical - achieved by powering down internal oscillator; enables ultra-low-power system sleep states. |
| Clock Input | 48-MHz crystal or oscillator at XTAL1 - generates internal 12-MHz USB clock; XTAL2 serves as crystal feedback node. |
| Port Power Control | Seven open-drain PWRON outputs + seven OVRCUR inputs - supports either individual-port or ganged power switching with external FETs or load switches. |
| Operating Temperature | 0°C to 70°C ambient - validated for commercial-grade embedded systems, not extended industrial or automotive ranges. |
Pinout & Package
Package: 48-pin TQFP (PT), JEDEC S-PQFP-G48, 7.0 mm × 7.0 mm body, 0.5-mm pitch - thermally enhanced plastic quad flatpack with exposed die pad connection option.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| DP0 / DM0 | Upstream differential data pair | Connects to host controller's USB upstream port; DP0 requires 1.5-kΩ pull-up for device enumeration. |
| DP1–DP7 / DM1–DM7 | Downstream differential data pairs | Support full-speed (12 Mbps) and low-speed (1.5 Mbps) devices; each pair requires 15-kΩ pull-down resistors. |
| PWRON1–PWRON7 | Active-low port power control outputs | Open-drain signals driving external high-side switches; all transition simultaneously in GANGED mode. |
| OVRCUR1–OVRCUR7 | Active-low overcurrent sense inputs | TTL-compatible inputs monitoring external current-limiting circuits; tied together in ganged implementation. |
| BUSPWR / GANGED | Configuration control inputs | BUSPWR = low → bus-powered mode; GANGED = high → ganged power switching; both static during operation. |
| XTAL1 / XTAL2 | 48-MHz clock interface | XTAL1 = crystal input or oscillator drive; XTAL2 = crystal feedback output - leave open when using oscillator. |
| SUSPND | Suspend status indicator | Active-high output signaling suspend state to external logic for coordinated system power-down. |
| RESET | Asynchronous reset input | Active-low TTL input with hysteresis; must be asserted at power-up to initialize hub state machine and port logic. |
Key Features
| Feature | Design Value |
|---|---|
| Self- and bus-powered dual-mode operation | Enables flexible system integration: bus-powered for portable hubs (4 ports), self-powered for desktop/industrial (7 ports). |
| Per-port or ganged power switching | Reduces BOM cost in ganged mode (one switch per group); improves fault isolation in per-port mode (single-port shutdown). |
| Full- and low-speed auto-sensing | Eliminates manual speed configuration - slew rate adjusted automatically based on attached device's signaling rate. |
| 1 µA suspend supply current | Minimizes standby power in always-on USB host systems; critical for battery-backed or energy-sensitive applications. |
| Integrated USB 1.0 transceivers | Removes need for external PHY components; reduces board area and signal integrity complexity on DP/DM traces. |
Applications
| Desktop Peripheral Hub | Industrial Docking Station |
|---|---|
|
Use Scenario: A compact 7-port USB hub integrated into a monitor base or keyboard palm rest, powered via upstream USB cable. IC Role / Device Role / Timing Role: TUSB2070PT acts as the central USB repeater and port manager, handling enumeration, packet routing, and power switching for connected mice, keyboards, and flash drives. Use Value: Enables single-cable connectivity while maintaining USB 1.0 compatibility with legacy peripherals and host controllers. |
Use Scenario: Ruggedized docking station for factory-floor HMIs, connecting barcode scanners, label printers, and USB storage under self-powered operation. IC Role / Device Role / Timing Role: TUSB2070PT provides isolated downstream port control with individual OVRCUR monitoring to prevent system-wide failure during field-device faults. Use Value: Supports hot-plug robustness and deterministic power recovery - critical in unattended industrial environments. |
| Embedded Host Expansion | Legacy System Upgrade Module |
|
Use Scenario: USB expansion module added to an older industrial PC lacking native USB ports, using local 5-V/3.3-V supplies. IC Role / Device Role / Timing Role: TUSB2070PT serves as the root hub extension, translating host PCI/ISA bus commands into USB protocol frames with precise frame timing. Use Value: Adds standardized peripheral connectivity without requiring OS driver updates or hardware redesign of the host platform. |
Use Scenario: Retrofit adapter board enabling USB 1.0 support on legacy medical or test equipment originally designed for PS/2 or serial interfaces. IC Role / Device Role / Timing Role: TUSB2070PT functions as a protocol bridge hub, managing upstream communication with minimal latency and strict USB 1.0 timing compliance. Use Value: Extends product lifecycle by adding modern peripheral compatibility while preserving existing mechanical and firmware architecture. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar USB hub applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TUSB2040PT | 4-port USB 1.0 hub, identical 48-pin TQFP package and pin-compatible I/O mapping except fewer DP/DM and PWRON/OVRCUR signals. | Lower port count suits space-constrained or cost-sensitive designs where ≤4 downstream devices are required. | Select TUSB2040PT when full 7-port capability is unnecessary and PCB layout reuse is prioritized. |
| TUSB2140IPR | 4-port USB 1.0 hub with integrated I²C interface for dynamic configuration; different pinout, QFN package, and no OSCOFF/SUSPND pins. | Enables runtime reconfiguration (e.g., port disable, power mode change) via microcontroller - unavailable on TUSB2070PT. | Choose TUSB2140IPR only if I²C-based host control and smaller footprint outweigh fixed-function simplicity of TUSB2070PT. |
Compared with TUSB2040PT and TUSB2140IPR, the TUSB2070PT uniquely delivers maximum port density in a fixed-function, low-cost TQFP package - ideal for static, high-port-count USB 1.0 expansion where configurability is secondary to reliability and layout stability.
Availability
TUSB2070PT is available at Aetrix Electronics and suitable for desktop peripheral hubs, industrial docking stations, and embedded host expansion modules requiring stable component supply despite its obsolete status through verified legacy channel sourcing.
Supply support for TUSB2070PT 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, embedded processing, and connectivity solutions since 1930.
The TUSB2070PT belongs to TI's USB 1.0 hub IC family, engineered specifically for cost-effective, low-power USB expansion in commercial and industrial systems where backward compatibility and design longevity are essential.
FAQ
What USB specification version does the TUSB2070PT support?
The TUSB2070PT supports USB Specification Version 1.0 exclusively. It is not compliant with USB 2.0 or later versions, and lacks high-speed (480 Mbps) capability. Its full-speed operation is limited to 12 Mbps, and low-speed operation to 1.5 Mbps - confirmed in the SLLS239B datasheet revision August 1997.
Can the TUSB2070PT operate in bus-powered mode with all seven downstream ports active?
No. The TUSB2070PT restricts downstream port activation to ports 1–4 in bus-powered mode, as mandated by USB 1.0 specification power budget limits. To enable all seven ports, the TUSB2070PT must be configured in self-powered mode using a local 3.3-V supply and setting BUSPWR high.
What is the function of the SUSPND pin on the TUSB2070PT?
The SUSPND pin on the TUSB2070PT is an active-high output that asserts during USB suspend state to signal external logic - such as PMICs or microcontrollers - to power down auxiliary circuitry. It remains low during normal operation and transitions high within microseconds of entering suspend, enabling coordinated low-power system behavior.
Does the TUSB2070PT require external USB termination resistors?
Yes. The TUSB2070PT requires 22-Ω series resistors on all DP/DM lines (upstream and downstream) per USB 1.0 specification. Additionally, downstream DP lines need 1.5-kΩ pull-up resistors for full-speed device detection, and all DM lines require 15-kΩ pull-down resistors - details confirmed in Figure 1 and Application Information section of the datasheet.
Is the TUSB2070PT pin-compatible with other TI USB hub ICs like the TUSB2040PT?
The TUSB2070PT shares the same 48-pin TQFP (PT) package and overlapping signal assignments with the TUSB2040PT, but is not fully pin-compatible due to unused pins (e.g., DP5–DP7, DM5–DM7, PWRON5–PWRON7, OVRCUR5–OVRCUR7) repurposed as NC on the TUSB2040PT. Direct replacement requires PCB modification to accommodate differing pin functions.
TUSB2070PT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 48-LQFP
- Programmable:
- Not Verified
- Protocol:
- -
- Function:
- -
- Interface:
- -
- Standards:
- -
- Voltage - Supply:
- -
- Current - Supply:
- -
- Operating Temperature:
- -
- Supplier Device Package:
- 48-LQFP (7x7)
- Grade:
- -
- Qualification:
- -
TUSB2070PT FAQ
1.How can I place an order for TUSB2070PT through Aetrix?
Please submit a Request for Quotation (RFQ) for TUSB2070PT 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 TUSB2070PT reliable?
The price and inventory of TUSB2070PT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TUSB2070PT is usually 5 days.
3.What payment methods are accepted for TUSB2070PT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TUSB2070PT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TUSB2070PT?
TUSB2070PT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TUSB2070PT 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 TUSB2070PT?
For technical support, including TUSB2070PT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TUSB2070PT requirements.
6.How does Aetrix verify that TUSB2070PT is sourced from the original manufacturer or authorized distributors?
All TUSB2070PT 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 TUSB2070PT meets industry standards.
7.What is the process for return or replacement of TUSB2070PT?
All TUSB2070PT units undergo pre-shipment inspection (PSI). If there is an issue with TUSB2070PT, 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 TUSB2070PT part is unused and in its original packaging.
Return procedure for TUSB2070PT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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