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Texas Instruments TXB0101DBVTG4
- Part No.:
- TXB0101DBVTG4
- Manufacturer:
- Texas Instruments
- Category:
- Translators, Level Shifters
- Package:
- Datasheet:
-
TXB0101DBVTG4.pdf
- Description:
- IC TRANSLATOR BIDIR SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:2,196
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Product details
Overview
TXB0101DBVTG4 from Texas Instruments is a 1-bit bidirectional voltage translator with auto 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, 100 Mbps max data rate at 3.3V, and VCC isolation for safe partial-power-down operation. It enables level-shifting between 1.8V microcontrollers and 3.3V peripherals in space-constrained mobile interfaces.
For engineers reviewing the TXB0101DBVTG4 datasheet, TXB0101DBVTG4 pinout, TXB0101DBVTG4 application, or TXB0101DBVTG4 equivalent, key selection factors include its SOT-23-6 NanoFree™ package, OE-referenced-to-VCCA control logic, Ioff-enabled power-down safety, 5μA max ICC, and compatibility with push-pull CMOS-not open-drain-bus topologies.
Technical Context
The TXB0101DBVTG4 uses edge-accelerated buffered architecture with dual one-shot circuits per I/O path to enhance rise/fall times without external direction control. Its auto-sensing relies on weak DC output drivers that are overdriven by opposing-side signals, enabling true bidirectional translation.
It implements VCC isolation: if either VCCA or VCCB is at GND, all outputs enter high-impedance state. OE input is referenced to VCCA, and Ioff functionality prevents backflow current during partial power-down, meeting JESD78 Class II latch-up requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| A-port voltage range | 1.2V to 3.6V - supports 1.2V/1.5V/1.8V/2.5V/3.3V logic domains |
| B-port voltage range | 1.65V to 5.5V - interoperates with 1.8V/2.5V/3.3V/5V systems, with VCCA ≤ VCCB constraint |
| Max data rate | 100 Mbps - achievable at VCCA = 3.3V & VCCB = 3.3V or 5V, enabling high-speed serial interface bridging |
| ESD protection (B port) | ±15 kV HBM - meets IEC 61000-4-2 Level 4 for robust system-level ESD immunity |
| Quiescent current | 5 μA maximum ICC - enables always-on level-shifting in battery-powered devices |
| Propagation delay | 0.8–4.7 ns - low-latency signal translation critical for timing-sensitive interfaces like SPI or GPIO |
| Ioff support | Active at VCC = 0V - blocks reverse current flow during power sequencing or sleep modes |
Pinout & Package
SOT-23-6 (DBV) package: 2.90 mm × 1.60 mm body, ultra-compact footprint ideal for mobile PCBs with tight layout constraints.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - VCCA | A-port supply rail | Must be ≤ VCCB; powers A-side logic and OE input; sets VIH/VIL thresholds for A port and OE |
| 2 - GND | Common reference | Single ground connection shared by both ports; no separate analog/digital grounds required |
| 3 - A | Bidirectional I/O (A side) | Referenced to VCCA; accepts 1.2V–3.6V logic; drives capacitive loads ≤70 pF |
| 4 - B | Bidirectional I/O (B side) | Referenced to VCCB; accepts 1.65V–5.5V logic; provides ±15 kV HBM ESD protection |
| 5 - OE | Output enable input | Active-high, referenced to VCCA; pulls low to place A/B in high-impedance state; requires pulldown resistor for power-up safety |
| 6 - VCCB | B-port supply rail | Must be ≥ VCCA; powers B-side logic; defines VOH/VOL levels and ESD protection strength |
Key Features
| Feature | Design Value |
|---|---|
| Auto direction-sensing | Eliminates need for external direction-control signal or glue logic in bidirectional buses like SDIO or eMMC |
| VCC isolation | Guarantees Hi-Z outputs when either VCCA or VCCB is unpowered - prevents bus contention during power sequencing |
| NanoFree™ packaging | Dies-as-packages reduce thermal resistance (RθJA = 192.3°C/W) and board area vs. standard SOT-23 |
| Push-pull CMOS optimization | Edge-accelerated one-shot circuitry delivers <5 ns propagation delay and sub-3 ns rise/fall times at 3.3V |
| Partial-power-down support | Ioff limits reverse current to ±1 μA when VCC = 0V - satisfies JEDEC JESD78 Class II latch-up and system safety standards |
Applications
| Smartphone Baseband Interface | Tablet SoC Peripherals |
|---|---|
Use Scenario: Interfacing 1.8V application processor GPIOs to 3.3V camera sensor or audio codec. IC Role / Device Role / Timing Role: Bidirectional level translator enabling real-time control and status feedback without direction control overhead. Use Value: Eliminates need for discrete MOSFET translators or direction logic, reducing BOM count and PCB area in 0.4-mm pitch designs. |
Use Scenario: Bridging 1.2V DDR I/O voltage domain of tablet SoC to 1.8V display timing controller. IC Role / Device Role / Timing Role: Low-latency, auto-sensing voltage translator maintaining signal integrity across mixed-voltage memory subsystems. Use Value: Supports 100 Mbps data rates with <5 ns tpd, ensuring setup/hold timing margins for high-resolution display interfaces. |
| Handset Power Management | Desktop PC Embedded Controller |
Use Scenario: Connecting 1.5V PMIC register interface to 3.3V baseband host processor. IC Role / Device Role / Timing Role: Safe, isolated level shifter with VCC-dependent Hi-Z behavior during PMIC reset or brownout. Use Value: VCC isolation prevents backfeed into powered-down PMIC rails, satisfying IEC 62368-1 functional safety requirements. |
Use Scenario: Translating LPC bus signals between 3.3V EC (Embedded Controller) and 1.8V Super I/O chip. IC Role / Device Role / Timing Role: Robust, ESD-hardened translator handling hot-plug and system wake events in legacy PC architectures. Use Value: ±15 kV HBM on B port protects against user-accessible LPC connector ESD events without external TVS diodes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional level-shifting applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TXS0101DCKR | Open-drain architecture with stronger pull-up capability; no VCC isolation; lower max data rate (60 Mbps) | Required for I²C, SMBus, or 1-Wire where bus arbitration depends on passive pull-ups | Select TXS0101DCKR only when translating open-drain signals - TXB0101DBVTG4 cannot drive I²C directly |
| SN74AVC1T45DBVR | Direction-controlled (DIR pin required); higher drive strength (24 mA); no auto-sensing; 5.5V tolerant inputs | Suitable for point-to-point GPIO expansion where direction is static or software-managed | Choose SN74AVC1T45DBVR when deterministic direction control and higher drive are needed - TXB0101DBVTG4 avoids DIR routing but lacks drive strength |
Compared with TXS0101DCKR and SN74AVC1T45DBVR, TXB0101DBVTG4 uniquely combines auto-direction sensing, VCC isolation, and ±15 kV B-port ESD in a 2.9×1.6 mm package - making it optimal for compact, mixed-voltage, push-pull bus bridges where direction changes dynamically and power sequencing is non-deterministic.
Availability
TXB0101DBVTG4 is available at Aetrix Electronics and suitable for smartphone baseband interfaces, tablet SoC peripherals, handset power management, and desktop PC embedded controllers requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.
Supply support for TXB0101DBVTG4 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 delivering analog, embedded processing, and connectivity solutions for industrial, automotive, and personal electronics markets.
The TXB0101DBVTG4 belongs to TI's voltage translation portfolio, designed specifically for space-constrained, mixed-voltage digital interfaces in portable consumer electronics where auto-sensing, low power, and high ESD robustness are mandatory.
FAQ
What voltage ranges does the TXB0101DBVTG4 support on its A and B ports?
The TXB0101DBVTG4 supports 1.2V to 3.6V on the A port and 1.65V to 5.5V on the B port, with the strict requirement that VCCA must not exceed VCCB. This enables translation between common logic families including 1.2V, 1.5V, 1.8V, 2.5V, 3.3V, and 5V domains. The device is not rated for VCCA > VCCB operation, and violating this condition may impair functionality or reliability.
Does the TXB0101DBVTG4 require an external direction-control signal?
No, the TXB0101DBVTG4 features auto direction-sensing and requires no external DIR signal. Its internal weak-driver architecture allows either side to overdrive the other during data transitions, enabling seamless bidirectional communication. This eliminates PCB routing for direction control and simplifies firmware design - a key advantage over direction-controlled alternatives like SN74AVC1T45DBVR.
Can the TXB0101DBVTG4 be used for I²C or SMBus level translation?
No, the TXB0101DBVTG4 is not suitable for I²C or SMBus because it is optimized for push-pull CMOS signals and lacks open-drain compatibility. Its output drivers cannot be safely paralleled with external pull-ups, risking contention. For I²C, TI recommends the TXS0101DCKR - a purpose-built open-drain translator with integrated strong pull-ups and bus-hold functionality.
How does the OE pin function on the TXB0101DBVTG4, and what is its voltage reference?
The OE (output enable) pin on the TXB0101DBVTG4 is active-high and referenced to VCCA. When OE is low, both A and B ports enter high-impedance state. To ensure safe power-up behavior, TI recommends tying OE to GND via a pulldown resistor (≥50 kΩ). OE must never float, as undefined states may cause unintended output activation or increased leakage.
What is the maximum data rate supported by the TXB0101DBVTG4, and under what conditions?
The TXB0101DBVTG4 supports up to 100 Mbps maximum data rate when VCCA = 3.3V ± 0.3V and VCCB = 3.3V or 5V. At lower VCCA (e.g., 1.2V), the max rate drops to 20 Mbps. These values are measured under specified load and transition conditions (CL = 15 pF, tr/tf ≤ 1 ns) and assume proper PCB layout with minimized trace inductance and capacitance.
TXB0101DBVTG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Translator Type:
- Voltage Level
- Channel Type:
- Bidirectional
- Number of Circuits:
- 1
- Channels per Circuit:
- 1
- 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:
- SOT-23-6
TXB0101DBVTG4 FAQ
1.How can I place an order for TXB0101DBVTG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TXB0101DBVTG4 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 TXB0101DBVTG4 reliable?
The price and inventory of TXB0101DBVTG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TXB0101DBVTG4 is usually 5 days.
3.What payment methods are accepted for TXB0101DBVTG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TXB0101DBVTG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TXB0101DBVTG4?
TXB0101DBVTG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TXB0101DBVTG4 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 TXB0101DBVTG4?
For technical support, including TXB0101DBVTG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TXB0101DBVTG4 requirements.
6.How does Aetrix verify that TXB0101DBVTG4 is sourced from the original manufacturer or authorized distributors?
All TXB0101DBVTG4 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 TXB0101DBVTG4 meets industry standards.
7.What is the process for return or replacement of TXB0101DBVTG4?
All TXB0101DBVTG4 units undergo pre-shipment inspection (PSI). If there is an issue with TXB0101DBVTG4, 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 TXB0101DBVTG4 part is unused and in its original packaging.
Return procedure for TXB0101DBVTG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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