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Texas Instruments TXB0101DBVT
- Part No.:
- TXB0101DBVT
- Manufacturer:
- Texas Instruments
- Category:
- Translators, Level Shifters
- Package:
- Datasheet:
-
TXB0101DBVT.pdf
- Description:
- IC TRANSLATOR BIDIR SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:1,340
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Product details
Overview
TXB0101DBVT 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, 5μA max ICC, and VCC isolation. It enables level-shifting between low-voltage logic domains in portable consumer interfaces.
For engineers reviewing the TXB0101DBVT datasheet, TXB0101DBVT pinout, TXB0101DBVT application, or TXB0101DBVT equivalent, this page delivers verified electrical specs, package-validated pin functions, real-world use scenarios in handheld devices, and two confirmed alternative translators with documented functional and application differences.
Technical Context
The TXB0101DBVT uses edge-accelerated buffered architecture with one-shot circuits to enhance rise/fall times without external direction control. Its dual-rail design isolates A-port (VCCA-referenced) and B-port (VCCB-referenced) logic domains while maintaining bidirectional signal flow.
VCC isolation ensures all outputs enter high-impedance state if either VCCA or VCCB is at GND. OE input-referenced to VCCA-controls 3-state operation, and Ioff supports partial-power-down mode by blocking backflow current during power-off sequencing.
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 families; must not exceed VCCB |
| B-port voltage range | 1.65V to 5.5V - enables translation to 1.8V/2.5V/3.3V/5V systems with ±15kV HBM ESD rating |
| Max data rate | 100 Mbps - achievable at VCCA = 2.5V or 3.3V with VCCB ≥ VCCA; timing validated per JEDEC test conditions |
| Quiescent current | 5 μA maximum ICC - enables ultra-low-power operation in battery-powered mobile applications |
| Propagation delay | 0.8–6.9 ns - varies with VCCA/VCCB combination; minimum 0.8 ns at VCCA=3.3V/VCCB=5V (A→B) |
| Ioff leakage | ±1 μA - prevents damaging current backflow when VCCA or VCCB is powered down |
| ESD protection (B port) | ±15 kV HBM - meets IEC 61000-4-2 Level 4 for robust system-level ESD immunity |
Pinout & Package
SOT-23-6 (DBV) package: 2.90 mm × 1.60 mm body, 0.95 mm height, surface-mount, lead-free, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - VCCA | A-port supply rail | Reference for A-port I/O and OE input; must be ≤ VCCB and within 1.2V–3.6V range |
| 2 - GND | Ground reference | Common return path for both ports; required for proper biasing and ESD current discharge |
| 3 - A | Bidirectional I/O (A side) | Connects to 1.2V–3.6V logic; referenced to VCCA; supports push-pull CMOS only |
| 4 - B | Bidirectional I/O (B side) | Connects to 1.65V–5.5V logic; referenced to VCCB; not suitable for open-drain buses like I²C |
| 5 - OE | Output enable input | Active-high, VCCA-referenced control; drives all I/Os into high-impedance when low |
| 6 - VCCB | B-port supply rail | Reference for B-port I/O; sets output drive strength and ESD protection level |
Key Features
| Feature | Design Value |
|---|---|
| Auto direction-sensing | Eliminates need for external direction-control signals; enables seamless bidirectional data flow on shared bus lines |
| VCC isolation | Guarantees high-impedance outputs when either VCCA or VCCB is at GND-critical for safe hot-plug and power sequencing |
| NanoFree™ packaging | Dies-as-package construction reduces footprint and thermal resistance (RθJA = 192.3°C/W for DBV) |
| Edge-rate acceleration | One-shot circuitry lowers effective output impedance (40–70Ω) during transitions, enabling 100 Mbps data rates |
| Ioff partial-power-down | Blocks reverse current flow when one supply is off-prevents latch-up and protects upstream drivers during brownout |
Applications
| Smartphone Baseband-to-PMIC Interface | Tablet SoC-to-Display Timing Controller |
|---|---|
Use Scenario: Translating GPIO and status signals between a 1.8V application processor and a 3.3V power management IC in a smartphone. IC Role / Device Role / Timing Role: Bidirectional level shifter enabling real-time communication without direction control or added timing overhead. Use Value: Reduces PCB routing complexity and eliminates need for discrete MOSFET translators or direction logic gates. |
Use Scenario: Interfacing a 1.2V mobile GPU I/O with a 5V display timing controller in a tablet's video subsystem. IC Role / Device Role / Timing Role: Voltage translator handling burst-mode pixel clock and sync signals with sub-10 ns propagation delay. Use Value: Maintains signal integrity at 100 Mbps while providing ±15 kV ESD protection on the higher-voltage side. |
| Laptop Embedded Controller Bus | Wearable Sensor Hub Interface |
Use Scenario: Connecting a 3.3V embedded controller (EC) to a 1.5V system management bus in an ultrabook platform. IC Role / Device Role / Timing Role: Low-power bidirectional translator supporting SMBus-compatible control signals with Ioff-enabled power gating. Use Value: Enables independent power cycling of EC and host without bus contention or leakage paths. |
Use Scenario: Bridging a 1.8V sensor fusion MCU to a 2.5V environmental sensor array in a hearable device. IC Role / Device Role / Timing Role: Ultra-low-quiescent-current (5 μA) translator preserving battery life during sleep modes. Use Value: Eliminates need for external pull-up resistors >50 kΩ, reducing BOM count and board area. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional level-shifting applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TXS0101DBVR | Open-drain architecture with internal pull-ups; supports I²C, SMBus, and 1-Wire; lower max data rate (24 Mbps) | Required for true open-drain bus protocols; unsuitable for push-pull CMOS-only interfaces | Select TXS0101DBVR only when translating I²C or other wired-AND buses; TXB0101DBVT is superior for high-speed push-pull links |
| SN74AVC1T45DBVR | Direction-controlled (DIR pin required); no auto-sensing; higher drive strength (24 mA); no VCC isolation or Ioff | Requires additional GPIO for direction management; lacks power-down safety features for mixed-supply systems | Choose SN74AVC1T45DBVR when deterministic direction control is available and VCC sequencing is tightly managed |
Compared with TXS0101DBVR and SN74AVC1T45DBVR, TXB0101DBVT uniquely combines auto direction-sensing, VCC isolation, and Ioff-making it the only option among the three that safely supports uncoordinated power-up/down of heterogeneous voltage domains in portable electronics.
Availability
TXB0101DBVT is available at Aetrix Electronics and suitable for smartphone baseband interfaces, tablet display controllers, laptop embedded controller buses, and wearable sensor hub designs requiring stable component supply, long-term lifecycle support, and RoHS-compliant SOT-23 packaging.
Supply support for TXB0101DBVT 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 with over 90 years of innovation in power management and signal chain technologies.
The TXB0101DBVT belongs to TI's voltage translation product line, engineered specifically for low-voltage, high-density portable electronics where space, power, and robustness across mixed-supply domains are critical.
FAQ
What is the maximum supported data rate for TXB0101DBVT?
The TXB0101DBVT supports up to 100 Mbps when VCCA = 2.5V or 3.3V and VCCB matches or exceeds VCCA (e.g., 3.3V or 5V). This is validated in TI's SCES639F datasheet Sections 5.10–5.11 and 5.18–5.21. Data rate drops to 60 Mbps at VCCA = 1.8V and 20 Mbps at VCCA = 1.2V, with timing dependent on specific VCCA/VCCB combinations.
Can TXB0101DBVT be used for I²C level shifting?
No, TXB0101DBVT is not suitable for I²C. Its push-pull output architecture cannot emulate open-drain behavior required by I²C buses. Using it on I²C may cause bus contention or logic failure. For I²C, TI recommends TXS0101DBVR-a purpose-built open-drain translator with internal pull-ups and slew-rate control. TXB0101DBVT is strictly for CMOS push-pull signal translation.
Does TXB0101DBVT require external pull-up resistors on its I/O lines?
No external pull-up or pull-down resistors are required on TXB0101DBVT's A or B ports under normal operation. Its internal edge-accelerated drivers provide sufficient drive for capacitive loads ≤70 pF. If external resistors are used, they must exceed 50 kΩ to avoid contention-per TI's guidance in Section 6.3.4. TXB0101DBVT's design intentionally avoids reliance on external biasing.
What happens to TXB0101DBVT outputs during power-up sequencing?
During power-up, TXB0101DBVT outputs remain in high-impedance state until both VCCA and VCCB reach valid operating levels. Its VCC isolation feature ensures no output drives before both supplies stabilize-even if VCCA ramps before VCCB or vice versa. This prevents bus glitches and protects downstream logic, making TXB0101DBVT ideal for systems with asynchronous supply sequencing.
How does the OE pin function on TXB0101DBVT?
The OE (output enable) pin on TXB0101DBVT is active-high and referenced to VCCA. When OE = low, all I/Os (A and B) enter high-impedance state within 392 ns (typical tdis). When OE transitions high, the internal one-shot circuitry enables full functionality after 1 μs (ten). OE must be driven from the VCCA domain-never from VCCB-to ensure correct logic threshold referencing.
TXB0101DBVT 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:
- 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
TXB0101DBVT FAQ
1.How can I place an order for TXB0101DBVT through Aetrix?
Please submit a Request for Quotation (RFQ) for TXB0101DBVT 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 TXB0101DBVT reliable?
The price and inventory of TXB0101DBVT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TXB0101DBVT is usually 5 days.
3.What payment methods are accepted for TXB0101DBVT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TXB0101DBVT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TXB0101DBVT?
TXB0101DBVT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TXB0101DBVT 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 TXB0101DBVT?
For technical support, including TXB0101DBVT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TXB0101DBVT requirements.
6.How does Aetrix verify that TXB0101DBVT is sourced from the original manufacturer or authorized distributors?
All TXB0101DBVT 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 TXB0101DBVT meets industry standards.
7.What is the process for return or replacement of TXB0101DBVT?
All TXB0101DBVT units undergo pre-shipment inspection (PSI). If there is an issue with TXB0101DBVT, 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 TXB0101DBVT part is unused and in its original packaging.
Return procedure for TXB0101DBVT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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