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Texas Instruments TXS0101DBVT
- Part No.:
- TXS0101DBVT
- Manufacturer:
- Texas Instruments
- Category:
- Translators, Level Shifters
- Package:
- Datasheet:
-
TXS0101DBVT.pdf
- Description:
- IC TRANSLATOR BIDIR SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:11,791
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Product details
Overview
TXS0101DBVT from Texas Instruments is a 1-bit bidirectional voltage-level translator with auto-direction sensing, designed for open-drain and push-pull logic interfaces between 1.65V–3.6V (A port) and 2.3V–5.5V (B port) domains. It supports up to 24Mbps push-pull data rates, integrates 10kΩ internal pullups on both ports, and features VCC isolation and Ioff partial-power-down capability. It enables seamless level shifting in mobile SoC-to-peripheral interconnects.
For engineers reviewing the TXS0101DBVT datasheet, TXS0101DBVT pinout, TXS0101DBVT application, or TXS0101DBVT equivalent, this page delivers verified electrical parameters, validated SOT-23-6 pin mapping, confirmed ESD ratings (±8kV HBM on B port), real-world timing behavior (tPHL ≤ 6.8ns at 1.8V/3.3V), and precise alternative selection guidance for voltage translation in space-constrained portable designs.
Technical Context
The TXS0101DBVT 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 external direction control. Its dual-rail design enforces VCCA ≤ VCCB during operation but eliminates power-supply sequencing constraints during startup.
Each port includes integrated 10kΩ pullup resistors referenced to its respective supply (VCCA or VCCB), enabling direct interface with open-drain drivers while supporting push-pull CMOS signals. The OE input-referenced to VCCA-places all I/Os in high-impedance state when low, with 200ns enable/disable times independent of VCCB voltage.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCCA Range | 1.65V to 3.6V - defines minimum logic-high threshold and maximum safe A-port supply; must be ≤ VCCB |
| VCCB Range | 2.3V to 5.5V - sets B-port logic compatibility with 2.5V/3.3V/5V systems; enables translation to legacy interfaces |
| Max Data Rate | 24Mbps (push-pull) - achievable with <50Ω driver impedance; enables USB 1.1, I²C fast-mode+, and GPIO bridging |
| ESD Rating (B port) | ±8kV HBM - ensures robustness against handling discharge in smartphone/tablet assembly lines |
| Propagation Delay | tPHL ≤ 6.8ns (A→B, 1.8V/3.3V) - guarantees sub-7ns signal integrity for high-speed peripheral handshaking |
| Ioff Current | ≤ ±2µA per port - maintains isolation during partial power-down, critical for battery-backed subsystems |
| VCC Isolation | Both ports enter Hi-Z if either VCCA or VCCB = GND - prevents backfeeding and latch-up in fault conditions |
Pinout & Package
SOT-23-6 (DBV) package: 2.9mm × 2.8mm footprint, 0.95mm max height, lead pitch 0.95mm - optimized for high-density mobile PCBs with minimal board area impact.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCCA | A-port supply rail | Reference for A-port logic thresholds and internal 10kΩ pullups; must be ≤ VCCB during operation |
| GND | Common ground reference | Shared return path for both ports; required for ESD current paths and noise immunity |
| A | Bidirectional I/O (A side) | Connects to 1.65V–3.6V domain; internally pulled up to VCCA; no external direction control needed |
| B | Bidirectional I/O (B side) | Connects to 2.3V–5.5V domain; internally pulled up to VCCB; auto-senses signal direction |
| OE | Output-enable input | Active-high control referenced to VCCA; drives all I/Os into Hi-Z when low; requires pull-down for power-up safety |
| VCCB | B-port supply rail | Reference for B-port logic thresholds and internal 10kΩ pullups; supports 5V-tolerant interfacing |
Key Features
| Feature | Design Value |
|---|---|
| No direction-control signal required | Eliminates PCB routing for DIR pin and firmware overhead; reduces BOM count in multi-channel translators |
| Integrated 10kΩ pullups on both ports | Removes need for four external resistors in open-drain I²C/SMBus applications; saves 0.5mm² board area per channel |
| VCC isolation with Hi-Z on supply loss | Prevents cross-rail leakage when one domain powers down - essential for battery-backed RTC or sensor subsystems |
| Ioff partial-power-down support | Enables system-level power gating without signal contention; maintains <2µA leakage during sleep modes |
| NanoFree™ package | SOT-23-6 footprint with die-scale dimensions - achieves same functionality as larger SC70 or SON packages in minimal area |
Applications
| Smartphone Baseband-to-PMIC Interface | Tablet SoC-to-Display Timing Controller |
|---|---|
|
Use Scenario: Translating I²C control signals between a 1.8V application processor and a 3.3V power management IC in a slim smartphone chassis. IC Role / Device Role / Timing Role: Bidirectional level shifter enabling clock/data exchange across voltage domains without direction arbitration logic. Use Value: Integrated 10kΩ pullups eliminate two external resistors; 24Mbps capability exceeds I²C fast-mode+ (1Mbps) requirements by 24×. |
Use Scenario: Bridging GPIO and reset signals between a 3.3V tablet SoC and a 5V display timing controller with tight layout constraints. IC Role / Device Role / Timing Role: Voltage translator ensuring valid logic thresholds on both sides while maintaining sub-10ns propagation delay. Use Value: VCC isolation prevents 5V backfeed into SoC domain during display power cycling; ±8kV B-port HBM withstands ESD events in front-panel assembly. |
| Laptop Touchpad Controller Interface | Industrial Handheld Scanner Logic Bridge |
|
Use Scenario: Level-shifting SPI clock and data lines between a 2.5V touchpad ASIC and a 3.3V host microcontroller in an ultrabook. IC Role / Device Role / Timing Role: Push-pull-capable translator delivering deterministic tPLH/tPHL for reliable SPI frame synchronization. Use Value: 2.5V/3.3V switching characteristics guarantee ≤4.4ns tPHL, enabling >20MHz SPI operation with margin. |
Use Scenario: Interfacing a 1.8V barcode scanner engine with a 5V industrial MCU in a ruggedized handheld device. IC Role / Device Role / Timing Role: Robust open-drain translator supporting 2Mbps data bursts with integrated pullups eliminating external biasing. Use Value: Ioff leakage <2µA preserves battery life during idle; -40°C to 85°C operating range meets extended temperature certification. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage-level translation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TXB0101DBVR | Active-push-pull architecture with separate direction control; higher ICC (12µA typical); no integrated pullups | Better suited for high-speed push-pull-only links requiring precise direction timing; unsuitable for open-drain I²C | Select TXB0101DBVR only when direction control is available and open-drain compatibility is unnecessary |
| SN74AVC1T45DBVR | Direction-controlled, lower VCCA min (1.2V); no VCC isolation; no integrated pullups; 500Mbps max rate | Targets ultra-low-voltage FPGA-to-ASIC bridges; lacks B-port 5V tolerance and ESD robustness for consumer end-equipment | Choose SN74AVC1T45DBVR for sub-1.65V domains or where 500Mbps is mandatory; avoid for 5V-tolerant or ESD-critical use cases |
Compared with TXS0101DBVT, TXB0101DBVR adds direction control overhead but improves push-pull timing consistency, while SN74AVC1T45DBVR enables lower-voltage operation but sacrifices 5V tolerance, integrated pullups, and ±8kV HBM protection-making TXS0101DBVT the optimal choice for cost-sensitive, ESD-prone, open-drain mobile interfaces.
Availability
TXS0101DBVT is available at Aetrix Electronics and suitable for smartphone baseband interfacing, tablet display controller bridging, laptop touchpad integration, industrial handheld scanner logic translation, and embedded IoT sensor node voltage domain isolation requiring stable component supply and long-term lifecycle assurance.
Supply support for TXS0101DBVT 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 90 years of innovation in power management and signal chain solutions.
The TXS0101 belongs to TI's voltage translation portfolio, engineered specifically for space-constrained, battery-powered portable electronics requiring robust, no-direction-control level shifting between mixed-voltage logic domains.
FAQ
What is the maximum allowable voltage difference between VCCA and VCCB for reliable operation of the TXS0101DBVT?
The TXS0101DBVT requires VCCA ≤ VCCB at all times during normal operation. While VCCA may temporarily exceed VCCB during power-up without damage, sustained violation causes undefined logic behavior and potential output contention. For example, with VCCB = 3.3V, VCCA must not exceed 3.3V; typical use cases pair 1.8V (VCCA) with 3.3V or 5V (VCCB).
Does the TXS0101DBVT support true bidirectional communication on a single data line without external direction control?
Yes, the TXS0101DBVT uses auto-direction-sensing circuitry that detects signal edges on either port to dynamically enable the pass gate in the correct direction. This eliminates the need for a dedicated DIR pin or firmware coordination, enabling true bidirectional I²C, SMBus, or GPIO sharing on one trace-exactly as implemented in the TXS0101DBVT.
Can the TXS0101DBVT be used with 5V-tolerant microcontrollers while powered from a 1.8V supply on the A side?
Yes-the TXS0101DBVT explicitly supports VCCA = 1.8V and VCCB = 5V. Its B port tolerates up to 5.5V, and the ±8kV HBM rating on the B port ensures robustness against ESD events common in 5V system environments. This configuration is validated in TI's SCES638F datasheet for TXS0101DBVT.
How does the integrated 10kΩ pullup resistor on the B port affect rise time when driving a 20pF bus capacitance?
With VCCB = 3.3V and Cbus = 20pF, the RC time constant is ~200ns-too slow for I²C fast-mode+. However, the TXS0101DBVT's one-shot accelerator circuit overrides this passive limit, achieving trB ≤ 7.6ns (typical) at 3.3V/3.3V per the TXS0101DBVT datasheet, enabling reliable 24Mbps push-pull or 2Mbps open-drain operation.
What happens to the A and B pins when OE is held low on the TXS0101DBVT?
When OE is low, the TXS0101DBVT places both A and B pins in a high-impedance (Hi-Z) state regardless of VCCA or VCCB voltage levels. This is confirmed in Section 7.4 of the TXS0101DBVT datasheet. The Hi-Z state persists until OE is driven high, with a guaranteed 200ns enable time (ten) before signal translation resumes.
TXS0101DBVT 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:
- 1.65 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:
- -55°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Features:
- Auto-Direction Sensing
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-6
TXS0101DBVT FAQ
1.How can I place an order for TXS0101DBVT through Aetrix?
Please submit a Request for Quotation (RFQ) for TXS0101DBVT 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 TXS0101DBVT reliable?
The price and inventory of TXS0101DBVT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TXS0101DBVT is usually 5 days.
3.What payment methods are accepted for TXS0101DBVT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TXS0101DBVT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TXS0101DBVT?
TXS0101DBVT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TXS0101DBVT 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 TXS0101DBVT?
For technical support, including TXS0101DBVT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TXS0101DBVT requirements.
6.How does Aetrix verify that TXS0101DBVT is sourced from the original manufacturer or authorized distributors?
All TXS0101DBVT 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 TXS0101DBVT meets industry standards.
7.What is the process for return or replacement of TXS0101DBVT?
All TXS0101DBVT units undergo pre-shipment inspection (PSI). If there is an issue with TXS0101DBVT, 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 TXS0101DBVT part is unused and in its original packaging.
Return procedure for TXS0101DBVT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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