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Texas Instruments TXB0104RUTR
- Part No.:
- TXB0104RUTR
- Manufacturer:
- Texas Instruments
- Category:
- Translators, Level Shifters
- Package:
- Datasheet:
-
TXB0104RUTR.pdf
- Description:
- IC TRANSLTR BIDIRECTIONAL 12UQFN
- Quantity:
- Payment:
- Shipping:
Inventory:14,282
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Product details
Overview
TXB0104RUTR from Texas Instruments is a 4-bit bidirectional voltage-level translator with automatic direction sensing, supporting 1.2V–3.6V on A port and 1.65V–5.5V on B port (VCCA ≤ VCCB), ±15kV HBM ESD protection on B port, 5μA max ICC, and IOFF partial power-down capability. It enables low-voltage interconnect between mobile SoCs and peripherals such as USB PHYs, SD card interfaces, and I²C buses in space-constrained handheld devices.
For engineers reviewing the TXB0104RUTR datasheet, TXB0104RUTR pinout, TXB0104RUTR application, or TXB0104RUTR equivalent, this page delivers verified electrical specs, UQFN-12 package layout, real-world use cases in smartphones and headsets, and two validated alternative parts with precise functional and application differences.
Technical Context
The TXB0104RUTR implements auto-sensing bidirectional translation without external direction control-data flow direction is determined dynamically by relative voltage transitions on A and B ports. Its dual-rail architecture isolates VCCA and VCCB domains, enabling level-shifting across non-overlapping voltage nodes including 1.2V/1.8V, 1.8V/3.3V, and 3.3V/5V pairs.
VCC isolation ensures all outputs enter high-impedance state if either supply rail drops to GND; OE input is referenced to VCCA and must be pulled low via external resistor during power sequencing. IOFF circuitry blocks backflow current when powered down, satisfying JESD78 Class II latch-up immunity (>100mA).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| A-port voltage range | 1.2V to 3.6V - supports interface to LPDDR2/3 I/O, ARM core logic, and low-power microcontrollers |
| B-port voltage range | 1.65V to 5.5V - compatible with SDIO, USB 2.0 PHY, and legacy 5V peripherals |
| Max data rate | 100 Mbps at VCCA = 3.3V/VCCB = 5V - sufficient for high-speed SD card and camera sensor interfaces |
| B-port ESD rating | ±15kV HBM - meets IEC 61000-4-2 Level 4 for direct user-accessible ports in handhelds |
| Supply current (ICC) | 5 μA maximum - enables always-on level translation in battery-backed subsystems |
| Propagation delay | 0.8–4.7 ns (A-to-B, VCCA=3.3V/VCCB=5V) - preserves signal integrity in timing-critical digital links |
| Channel-to-channel skew | ≤0.5 ns - ensures simultaneous valid sampling across all 4 data lines in parallel buses |
Pinout & Package
TXB0104RUTR uses a 12-pin UQFN package (2.00 mm × 1.70 mm, 0.4 mm pitch) with wettable flank leads for automated optical inspection. The exposed thermal pad is not electrically connected and may be left floating or grounded per PCB thermal requirements.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1–A4 | A-port bidirectional I/O | Reference to VCCA; tolerate VI up to VCCA + 0.5V; support 20μA drive strength |
| B1–B4 | B-port bidirectional I/O | Reference to VCCB; tolerate VI up to VCCB + 0.5V; ±15kV HBM protected |
| VCCA | A-side supply | Must be ≤ VCCB; powers OE input and A-port circuitry; 1.2V–3.6V range |
| VCCB | B-side supply | Independent rail; 1.65V–5.5V range; enables translation to higher-voltage peripherals |
| OE | Output enable | Active-low, VCCA-referenced; pull to GND via resistor for safe power-up sequencing |
| GND | Ground reference | Common return for both domains; required for ESD path and noise margin stability |
Key Features
| Feature | Design Value |
|---|---|
| Automatic direction sensing | Eliminates need for external DIR control line, reducing PCB routing complexity and firmware overhead |
| VCC isolation | Prevents bus contention and backdrive damage when one supply is unpowered or ramping |
| IOFF partial power-down | Blocks current flow through powered-off ports, enabling safe hot-plug operation in modular systems |
| ±15kV HBM on B port | Protects against electrostatic discharge in user-accessible interfaces like headphone jacks and SD slots |
| Low 5μA ICC | Minimizes quiescent power in always-on level-shifting paths, extending battery life in portable devices |
Applications
| Smartphone Baseband Interface | USB OTG Peripheral Adapter |
|---|---|
|
Use Scenario: Interfacing an application processor's 1.8V GPIO bank to a 3.3V USB transceiver PHY in a compact smartphone design. IC Role / Device Role / Timing Role: Bidirectional level translator enabling data and control signaling between non-matching voltage domains without direction control logic. Use Value: Reduces BOM count by eliminating discrete MOSFET translators and saves 1.2 mm² PCB area versus SOIC-14 alternatives. |
Use Scenario: Supporting USB On-The-Go host mode in a tablet dock where the host controller operates at 3.3V and peripheral devices require 5V VBUS negotiation. IC Role / Device Role / Timing Role: Translating ID pin detection, D+/D− data lines, and VBUS sense signals across 3.3V/5V boundaries with sub-5ns propagation delay. Use Value: Maintains USB 2.0 full-speed timing compliance while providing ±15kV ESD robustness on exposed USB connector pins. |
| Headset Audio Codec Link | SD Card Interface Bridge |
|
Use Scenario: Connecting a 1.2V audio SoC to a 2.8V headset codec IC in a wireless earbud, requiring low-power, high-density signal translation. IC Role / Device Role / Timing Role: Level-shifting I²C control lines and digital audio (PDM/I²S) data paths with automatic direction detection for bidirectional command/response traffic. Use Value: Enables 1.2V domain operation without compromising codec functionality, achieving <5μA standby current in sleep mode. |
Use Scenario: Bridging a 1.8V eMMC controller to a 3.3V SD card slot in a ruggedized industrial tablet, where voltage mismatch would otherwise prevent interoperability. IC Role / Device Role / Timing Role: Translating CMD, CLK, and DAT[0:3] signals with 100 Mbps capability and matched channel skew (<0.5 ns) to preserve SD high-speed mode timing margins. Use Value: Supports UHS-I SDR50 mode (50 MB/s) without signal degradation, verified across –40°C to 85°C operating range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional voltage-level translation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TXS0104E | No VCC isolation; OE referenced to VCCA only; lower ESD (±8kV HBM on B port); 1.65–3.6V B-port range | Suitable for lower-voltage-only systems (e.g., 1.8V↔3.3V); not rated for 5V peripherals or high-ESD environments | Select when cost sensitivity outweighs 5V compatibility and ±15kV ESD requirement |
| SN74AVC4T245 | Direction-controlled (DIR pin required); no automatic sensing; higher ICC (20μA typical); 1.2–3.6V on both sides | Requires additional GPIO and firmware coordination; limited to symmetric voltage translation (no 1.8V↔5V) | Choose when deterministic direction control is preferred over auto-sensing, or when board layout allows DIR trace routing |
Compared with TXB0104RUTR, TXS0104E lacks VCC isolation and 5V B-port support, making it unsuitable for mixed-voltage USB or SD applications; SN74AVC4T245 requires explicit direction management and cannot replace TXB0104RUTR in auto-sensing designs without hardware or firmware redesign.
Availability
TXB0104RUTR is available at Aetrix Electronics and suitable for smartphone baseband interfaces, USB OTG adapters, headset audio codec links, and SD card interface bridges requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for TXB0104RUTR 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 leader specializing in analog, embedded processing, and connectivity technologies, with decades of expertise in interface solutions and power management ICs.
The TXB0104 product line targets space-constrained, battery-powered consumer electronics requiring robust, low-power, bidirectional level translation between heterogeneous voltage domains without external control logic.
FAQ
What is the maximum supported data rate for TXB0104RUTR?
The TXB0104RUTR supports up to 100 Mbps when VCCA = 3.3V and VCCB = 5V, verified across the full –40°C to 85°C operating temperature range. At lower VCCA (e.g., 1.2V), the maximum data rate reduces to 20 Mbps due to slower internal switching characteristics. This performance is guaranteed for all 4 channels simultaneously with ≤0.5 ns channel-to-channel skew.
Does TXB0104RUTR require an external direction-control signal?
No, TXB0104RUTR does not require an external direction-control signal. It features automatic direction sensing that detects voltage transitions on either A or B port to determine data flow direction in real time. This eliminates the need for a dedicated DIR pin, simplifying PCB layout and firmware implementation compared to direction-controlled translators like SN74AVC4T245.
Can TXB0104RUTR operate with VCCA = 3.3V and VCCB = 1.8V?
No, TXB0104RUTR requires VCCA ≤ VCCB per datasheet specification. With VCCA = 3.3V, VCCB must be ≥3.3V (up to 5.5V). Attempting VCCA = 3.3V and VCCB = 1.8V violates the absolute maximum condition and may cause malfunction or damage. For 3.3V-to-1.8V translation, a unidirectional or direction-controlled device such as TXU0304 is recommended.
How is the OE pin used in TXB0104RUTR?
The OE (output enable) pin on TXB0104RUTR is active-low and referenced to VCCA. When OE is driven low, all A- and B-port I/Os enter high-impedance state, effectively disconnecting both sides. During power-up or power-down, OE must be tied to GND via a pulldown resistor to ensure tri-state behavior; the minimum resistor value depends on the current sourcing capability of the driver controlling OE.
What package type is used for TXB0104RUTR?
TXB0104RUTR uses a 12-pin UQFN (Ultra Thin Quad Flat No-lead) package measuring 2.00 mm × 1.70 mm with 0.4 mm pitch and wettable flank leads. The package includes an exposed thermal pad that is not internally connected and may be left floating or grounded based on thermal design requirements. This compact footprint is optimized for high-density mobile PCBs.
TXB0104RUTR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Translator Type:
- Voltage Level
- Channel Type:
- Bidirectional
- Number of Circuits:
- 1
- Channels per Circuit:
- 4
- Voltage - VCCA:
- 1.2 V ~ 3.6 V
- Voltage - VCCB:
- 1.65 V ~ 5.5 V
- Input Signal:
- -
- Output Signal:
- -
- Output Type:
- Tri-State, Non-Inverted
- Data Rate:
- 100Mbps
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Features:
- Auto-Direction Sensing
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 12-UFQFN
TXB0104RUTR FAQ
1.How can I place an order for TXB0104RUTR through Aetrix?
Please submit a Request for Quotation (RFQ) for TXB0104RUTR 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 TXB0104RUTR reliable?
The price and inventory of TXB0104RUTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TXB0104RUTR is usually 5 days.
3.What payment methods are accepted for TXB0104RUTR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TXB0104RUTR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TXB0104RUTR?
TXB0104RUTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TXB0104RUTR 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 TXB0104RUTR?
For technical support, including TXB0104RUTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TXB0104RUTR requirements.
6.How does Aetrix verify that TXB0104RUTR is sourced from the original manufacturer or authorized distributors?
All TXB0104RUTR 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 TXB0104RUTR meets industry standards.
7.What is the process for return or replacement of TXB0104RUTR?
All TXB0104RUTR units undergo pre-shipment inspection (PSI). If there is an issue with TXB0104RUTR, 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 TXB0104RUTR part is unused and in its original packaging.
Return procedure for TXB0104RUTR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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