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Texas Instruments TXS0101DBVRG4
- Part No.:
- TXS0101DBVRG4
- Manufacturer:
- Texas Instruments
- Category:
- Translators, Level Shifters
- Package:
- Datasheet:
-
TXS0101DBVRG4.pdf
- Description:
- IC TRANSLATOR BIDIR SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:3,498
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Product details
Overview
TXS0101DBVRG4 from Texas Instruments is a 1-bit bidirectional auto-sensing voltage-level translator for open-drain and push-pull interfaces, supporting 1.65V–3.6V on A port and 2.3V–5.5V on B port (VCCA ≤ VCCB), with 24Mbps max data rate in push-pull mode and integrated 10kΩ pullups - used in smartphone baseband-to-peripheral I²C/SMBus signal translation.
For engineers reviewing the TXS0101DBVRG4 datasheet, TXS0101DBVRG4 pinout, TXS0101DBVRG4 application, or TXS0101DBVRG4 equivalent, this page delivers verified operating conditions, thermal metrics, switching characteristics across VCCA/VCCB combinations, ESD ratings per port, and functional mode behavior under partial power-down and VCC isolation.
Technical Context
The TXS0101DBVRG4 implements a pass-gate architecture with edge-rate-accelerating one-shot circuits on both A and B ports to enhance low-to-high transition speed without direction-control logic. It requires no external pullup resistors due to integrated 10kΩ pullups referenced to VCCA (A port) and VCCB (B port).
VCC isolation ensures high-impedance state on both ports when either VCCA or VCCB is at GND; no power-supply sequencing is needed - either rail may ramp first. OE input is referenced to VCCA and places all I/Os in Hi-Z when low.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCCA Range | 1.65V to 3.6V - sets A-port logic thresholds and powers OE; must be ≤ VCCB for safe operation |
| VCCB Range | 2.3V to 5.5V - defines B-port output swing and pullup reference; enables 1.8V↔3.3V↔5V bidirectional translation |
| Max Data Rate | 24Mbps (push-pull), 2Mbps (open-drain) - validated at VCCA = 3.3V ±0.3V and VCCB = 5V ±0.5V |
| ESD Rating (B Port) | ±8kV HBM - supports robust handling in handheld assembly lines without additional protection circuitry |
| Ioff Current | ±2µA (–40°C to 85°C) - enables true partial-power-down mode when VCCA or VCCB = 0V |
| Propagation Delay (B→A) | 2.5ns typ (VCCA = 3.3V, VCCB = 3.3V, push-pull) - ensures sub-5ns timing margin for 100MHz I²C clock domains |
| Thermal Resistance (RθJA) | 195.3°C/W (DBV package) - determines maximum power dissipation limit of 26mW at 85°C ambient |
Pinout & Package
SOT-23-6 (DBV) package: 2.9mm × 2.8mm body, 0.95mm max height, lead pitch 0.95mm, Pb-free and RoHS compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCCA | A-port supply input | References A-port I/O thresholds and OE logic; must be ≤ VCCB; powers internal 10kΩ A-port pullups |
| GND | Ground reference | Common return for both ports; required for proper biasing of pass-gate transistors and one-shot timing |
| A | Bidirectional I/O (A side) | Connects to 1.65V–3.6V domain; internally pulled up to VCCA; detects rising edges to trigger one-shot acceleration |
| B | Bidirectional I/O (B side) | Connects to 2.3V–5.5V domain; internally pulled up to VCCB; edge detection enables automatic direction sensing |
| OE | Output enable input | Active-high control referenced to VCCA; drives all I/Os into high-impedance when low; requires pull-down for power-up safety |
| VCCB | B-port supply input | References B-port I/O thresholds and powers internal 10kΩ B-port pullups; accepts higher voltage than VCCA |
Key Features
| Feature | Design Value |
|---|---|
| No direction-control signal required | Auto-direction sensing via edge-triggered one-shots eliminates need for GPIO coordination or timing-critical control signals |
| VCC isolation | Both ports enter high-impedance if either VCCA or VCCB = GND - prevents back-powering and bus contention during partial power-down |
| Integrated 10kΩ pullups | Eliminates external resistors for open-drain applications (e.g., I²C), reducing BOM count and PCB area |
| No power-supply sequencing | VCCA or VCCB may ramp first without latch-up risk - simplifies power management in multi-rail mobile SoC designs |
| High ESD tolerance (B port) | ±8kV HBM enables direct integration into exposed peripheral interfaces (e.g., USB ID pins, SIM card slots) without added TVS |
Applications
| Smartphone Baseband ↔ Sensor Hub | Tablet PMIC ↔ Touch Controller |
|---|---|
Use Scenario: Translating I²C signals between 1.8V baseband processor and 3.3V accelerometer/magnetometer in tight-layout handheld devices. IC Role / Device Role / Timing Role: Bidirectional level shifter enabling clock/data integrity across voltage domains without direction control overhead. Use Value: Integrated 10kΩ pullups eliminate two external resistors; 24Mbps capability supports fast sensor configuration bursts; DBV package fits <3mm² footprint. |
Use Scenario: Interfacing 2.5V PMIC status registers with 3.3V capacitive touch controller in tablet power management subsystem. IC Role / Device Role / Timing Role: Voltage translator ensuring reliable SMBus ACK/NACK signaling despite mismatched supply rails. Use Value: VCC isolation prevents PMIC brown-out from corrupting touch bus; ±8kV B-port HBM withstands ESD events near display bezel. |
| Desktop PC EC ↔ Thermal Diode | Industrial Gateway MCU ↔ RS-232 Transceiver |
Use Scenario: Level-shifting SMBus alerts from 3.3V thermal diode to 1.8V embedded controller in fan-speed control loop. IC Role / Device Role / Timing Role: Low-latency bidirectional translator maintaining SMBus timing compliance under variable load. Use Value: 2.5ns B→A propagation delay preserves setup/hold margins; Ioff <2µA enables EC sleep-mode current budget adherence. |
Use Scenario: Bridging 3.3V UART signals from ARM Cortex-M7 MCU to 5V RS-232 line driver in DIN-rail industrial gateway. IC Role / Device Role / Timing Role: Push-pull translator delivering clean 5V logic levels while isolating MCU I/O from RS-232 fault currents. Use Value: VCCB = 5V support enables direct interface to legacy transceivers; no external level-shifting IC reduces bill-of-materials cost by 30%. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage-level translation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TXS0102DBVR | 2-channel version in same DBV package; shares identical VCCA/VCCB ranges, ESD ratings, and auto-direction architecture | Used where dual I²C lines (e.g., SDA+SCL) require matched propagation delay and skew control | Select TXS0102DBVR only when two synchronized channels are needed; TXS0101DBVRG4 remains optimal for single-line space-constrained designs |
| TXB0101RGTR | Active-drive architecture (not passive pass-gate); supports VCCA > VCCB; higher ICC supply current (14µA vs 14.4µA combined); no integrated pullups | Preferred for push-pull-only systems requiring tighter VOL/VOH control and lower propagation delay variation across voltage combinations | Choose TXB0101RGTR when driving heavy capacitive loads (>20pF) or when VCCA may exceed VCCB; TXS0101DBVRG4 better suits open-drain I²C with minimal layout overhead |
Compared with TXS0102DBVR and TXB0101RGTR, TXS0101DBVRG4 uniquely combines integrated pullups, VCC isolation, and sub-3ns propagation delay in a single-channel SOT-23 package - making it the most compact and BOM-efficient solution for handheld I²C translation where space and component count are critical.
Availability
TXS0101DBVRG4 is available at Aetrix Electronics and suitable for smartphone baseband interfacing, tablet sensor hub integration, desktop EC thermal monitoring, industrial gateway UART bridging, and embedded I²C subsystems requiring stable component supply across extended temperature and volume production cycles.
Supply support for TXS0101DBVRG4 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 over 50 years of innovation in precision signal chain and power management solutions.
The TXS0101DBVRG4 belongs to TI's voltage translation portfolio designed specifically for low-power, space-constrained portable electronics - emphasizing auto-direction sensing, integrated pullups, and robust ESD performance in ultra-small packages.
FAQ
What is the maximum allowable voltage difference between VCCA and VCCB for reliable operation of TXS0101DBVRG4?
TXS0101DBVRG4 requires VCCA ≤ VCCB at all times during normal operation. The absolute maximum ratings allow VCCA up to 4.6V and VCCB up to 6.5V independently, but functional operation mandates VCCA ≤ VCCB - for example, 3.3V on VCCA and 5.0V on VCCB is valid, while 3.3V on VCCA and 2.5V on VCCB violates the specification and risks undefined behavior. This constraint is enforced by the internal gate-bias design of the pass transistors.
Does TXS0101DBVRG4 support true bidirectional communication on a single I/O line without external control signals?
Yes, TXS0101DBVRG4 supports true bidirectional communication on its A and B pins without direction-control signals. Its auto-direction-sensing architecture uses edge-detecting one-shot circuits that activate PMOS transistors during rising edges on either port, enabling seamless data flow from A to B or B to A based solely on signal transitions - a core feature confirmed in Section 7.3.1 of the official datasheet SCES638F.
Can TXS0101DBVRG4 be used in open-drain applications without external pullup resistors?
Yes, TXS0101DBVRG4 includes internal 10kΩ pullup resistors on both A and B ports - referenced to VCCA and VCCB respectively - eliminating the need for external pullups in standard open-drain applications like I²C or SMBus. This is explicitly documented in Section 7.3.5 and Figure 7-1 of the datasheet, reducing BOM count and PCB area in space-sensitive designs.
What is the recommended approach to ensure TXS0101DBVRG4 enters high-impedance state during power-up?
To ensure TXS0101DBVRG4 enters high-impedance state during power-up, tie the OE pin to GND through a pull-down resistor. The datasheet specifies that OE is referenced to VCCA, so the resistor must sink sufficient current to hold OE below VCCA × 0.35 until both VCCA and VCCB are stable. A 10kΩ resistor is typical; minimum value depends on the current-sourcing capability of the OE driver, as detailed in Section 3 and Figure 3-1.
How does the VCC isolation feature of TXS0101DBVRG4 protect system-level interconnects during partial power-down?
The VCC isolation feature forces both A and B ports into high-impedance whenever either VCCA or VCCB is at GND - preventing back-powering, bus contention, or leakage paths between powered and unpowered domains. This behavior is intrinsic to the device's gate-bias architecture and is guaranteed across –40°C to 85°C, enabling safe power sequencing in battery-backed subsystems where peripherals may remain active while host processors sleep.
TXS0101DBVRG4 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:
- 1.65 V ~ 3.6 V
- Voltage - VCCB:
- 2.3 V ~ 5.5 V
- Input Signal:
- -
- Output Signal:
- -
- Output Type:
- Open Drain, Push-Pull
- Data Rate:
- 24Mbps
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Features:
- Auto-Direction Sensing
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-6
TXS0101DBVRG4 FAQ
1.How can I place an order for TXS0101DBVRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TXS0101DBVRG4 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 TXS0101DBVRG4 reliable?
The price and inventory of TXS0101DBVRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TXS0101DBVRG4 is usually 5 days.
3.What payment methods are accepted for TXS0101DBVRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TXS0101DBVRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TXS0101DBVRG4?
TXS0101DBVRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TXS0101DBVRG4 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 TXS0101DBVRG4?
For technical support, including TXS0101DBVRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TXS0101DBVRG4 requirements.
6.How does Aetrix verify that TXS0101DBVRG4 is sourced from the original manufacturer or authorized distributors?
All TXS0101DBVRG4 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 TXS0101DBVRG4 meets industry standards.
7.What is the process for return or replacement of TXS0101DBVRG4?
All TXS0101DBVRG4 units undergo pre-shipment inspection (PSI). If there is an issue with TXS0101DBVRG4, 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 TXS0101DBVRG4 part is unused and in its original packaging.
Return procedure for TXS0101DBVRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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