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Texas Instruments TXB0101DRLR
- Part No.:
- TXB0101DRLR
- Manufacturer:
- Texas Instruments
- Category:
- Translators, Level Shifters
- Package:
- Datasheet:
-
TXB0101DRLR.pdf
- Description:
- IC TRANSLTR BIDIRECTIONAL SOT5X3
- Quantity:
- Payment:
- Shipping:
Inventory:11,118
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Product details
Overview
TXB0101DRLR 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), ±15 kV HBM ESD protection on B port, 100 Mbps max data rate at 3.3V/5V, and Ioff partial-power-down support. It enables level-shifting between low-voltage logic domains in portable consumer interfaces.
For engineers reviewing the TXB0101DRLR datasheet, TXB0101DRLR pinout, TXB0101DRLR application, or TXB0101DRLR equivalent, key selection criteria include VCCA/VCCB voltage compatibility, auto-direction operation without control signals, high-impedance state during power sequencing, ESD robustness for handheld interfaces, and NanoFree™ SOT package footprint constraints.
Technical Context
The TXB0101DRLR implements edge-accelerated buffered translation using dual one-shot circuits per I/O path to enhance rise/fall times-PMOS assist for low-to-high transitions and NMOS assist for high-to-low transitions. Its architecture eliminates need for external direction control by dynamically overdriving weak DC output drivers during signal edges.
VCCA-referenced OE input controls 3-state operation; VCC isolation ensures all outputs enter high-impedance when either supply drops to GND. The device supports push-pull CMOS only-not open-drain protocols like I²C-and requires external pull resistors >50 kΩ if used on resistive buses.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| A-port voltage range | 1.2V to 3.6V - enables interface with 1.2V/1.5V/1.8V/2.5V/3.3V logic families |
| B-port voltage range | 1.65V to 5.5V - supports 1.8V/2.5V/3.3V/5V systems with VCCA ≤ VCCB constraint |
| Max data rate | 100 Mbps - achievable at VCCA = 2.5V/3.3V and VCCB = 2.5V/3.3V/5V, enabling high-speed serial links |
| B-port ESD rating | ±15 kV HBM - meets IEC 61000-4-2 Level 4 for system-level ESD immunity in handhelds |
| ICC (max) | 5 μA - ultra-low quiescent current supports battery-powered always-on interfaces |
| Ioff support | Yes - prevents backflow current during partial power-down, protecting powered-down subsystems |
| Propagation delay | 0.8–6.9 ns - varies with VCCA/VCCB; e.g., 0.8 ns A→B at 3.3V/5V enables tight timing budgets |
Pinout & Package
TXB0101DRLR uses the 6-pin SOT (DRL) package, measuring 1.60 mm × 1.20 mm, part of Texas Instruments' NanoFree™ technology where the bare die serves as the package.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: VCCA | A-port supply rail | Must be ≤ VCCB; powers A-side logic and OE input; range 1.2V–3.6V |
| 2: GND | Common reference | Single ground connection shared by both ports; no separate analog/digital grounds |
| 3: A | Bidirectional I/O (A side) | Referenced to VCCA; connects to 1.2V–3.6V domain; not open-drain compatible |
| 4: B | Bidirectional I/O (B side) | Referenced to VCCB; connects to 1.65V–5.5V domain; supports ±15 kV HBM ESD |
| 5: OE | Output enable input | Active-high, referenced to VCCA; drives all I/Os to high-impedance when low |
| 6: VCCB | B-port supply rail | Must be ≥ VCCA; powers B-side logic; range 1.65V–5.5V |
Key Features
| Feature | Design Value |
|---|---|
| Auto direction-sensing | Eliminates external direction-control logic and PCB routing, reducing BOM and layout complexity |
| VCC isolation | Guarantees high-impedance outputs if either VCCA or VCCB falls to GND, preventing bus contention during power sequencing |
| NanoFree™ packaging | 1.60 mm × 1.20 mm SOT footprint saves board space vs. standard SOT-23 (2.90 mm × 1.60 mm) |
| Edge-rate acceleration | One-shot circuitry reduces transition times-e.g., B-port tr/tf < 2.7 ns at 5V-improving signal integrity at 100 Mbps |
| Ioff partial-power-down | Blocks current flow from live I/Os into unpowered domains, satisfying JEDEC JESD78 latch-up Class II requirements |
Applications
| Smartphone Baseband–Application Processor Interface | Tablet USB OTG Data Lines |
|---|---|
Use Scenario: Bidirectional level translation between 1.8V baseband processor GPIO and 3.3V application processor peripherals. IC Role / Device Role / Timing Role: Voltage translator enabling interoperability across mixed-voltage SoC subsystems without direction control overhead. Use Value: Eliminates need for discrete MOSFET translators or direction-gated buffers, reducing component count and PCB area in space-constrained mobile designs. | Use Scenario: Translating 1.2V/1.5V USB PHY signals to 3.3V OTG controller in dual-role tablet configurations. IC Role / Device Role / Timing Role: High-speed bidirectional translator supporting USB 2.0 full-speed (12 Mbps) and higher data rates up to 100 Mbps. Use Value: Delivers sub-10 ns propagation delay and ±15 kV HBM ESD protection on B port, ensuring robust USB line reliability during hot-plug events. |
| Desktop PC SMBus Voltage Translation | Handset Camera Interface (CSI-2 Auxiliary Lines) |
Use Scenario: Bridging 3.3V SMBus master to 1.8V sensor nodes on desktop motherboard management controllers. IC Role / Device Role / Timing Role: Low-power, always-on translator maintaining bus integrity during system suspend/resume cycles. Use Value: 5 μA max ICC and Ioff support enable zero-current leakage paths during deep sleep, extending platform standby time. | Use Scenario: Level-shifting 1.2V camera module control lines (e.g., reset, standby) to 2.5V/3.3V application processor in slim handset form factors. IC Role / Device Role / Timing Role: NanoFree™-packaged translator minimizing board real estate while meeting stringent ESD requirements for exposed flex cables. Use Value: 1.60 mm × 1.20 mm DRL package fits within narrow camera module edge zones; ±15 kV HBM protects against handling ESD during assembly. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional level-shifting applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TXS0101DRYR | Open-drain compatible; lower drive strength; no edge acceleration; 60 Mbps max data rate | Required for I²C, SMBus, or 1-Wire where bus arbitration relies on pull-up resistors | Select TXS0101DRYR only when translating open-drain protocols; TXB0101DRLR is unsuitable due to push-pull architecture |
| SN74AVC1T45DBVR | Direction-controlled (DIR pin required); higher drive strength; 24 mA output; no VCC isolation | Suitable for point-to-point push-pull links where direction is static or software-managed | Choose SN74AVC1T45DBVR when deterministic direction control is acceptable and higher drive is needed; TXB0101DRLR avoids DIR routing but lacks 24 mA drive |
Compared with TXS0101DRYR and SN74AVC1T45DBVR, TXB0101DRLR uniquely combines auto-direction sensing, VCC isolation, and edge acceleration-making it optimal for dynamic, mixed-voltage, space-constrained push-pull interfaces where direction changes frequently and power sequencing is non-uniform.
Availability
TXB0101DRLR is available at Aetrix Electronics and suitable for smartphone, tablet, and desktop PC applications requiring stable component supply, high-volume manufacturability, and long-term lifecycle continuity.
Supply support for TXB0101DRLR 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 company delivering analog and embedded processing solutions for industrial, automotive, and personal electronics markets.
The TXB0101 product line delivers compact, low-power, auto-direction voltage translators optimized for portable consumer devices with aggressive size and ESD requirements.
FAQ
What voltage ranges does the TXB0101DRLR support on its A and B ports?
The TXB0101DRLR 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 universal translation between common logic families including 1.2V, 1.5V, 1.8V, 2.5V, 3.3V, and 5V domains. The TXB0101DRLR's voltage range compliance is verified across –40°C to 85°C operating temperature.
Does the TXB0101DRLR require an external direction-control signal?
No, the TXB0101DRLR features auto direction-sensing and requires no external direction-control signal. Its internal architecture uses weak DC drivers and edge-accelerated one-shot circuits to detect and respond to signal transitions on either port, enabling seamless bidirectional data flow. This eliminates PCB routing for DIR lines and simplifies firmware control-key advantages of the TXB0101DRLR over direction-controlled alternatives.
Can the TXB0101DRLR be used for I²C or SMBus level translation?
No, the TXB0101DRLR is not suitable for I²C or SMBus because it uses push-pull output drivers incompatible with open-drain bus arbitration. Using TXB0101DRLR on such buses risks contention and protocol failure. For I²C/SMBus, TI recommends the TXS0101 series. The TXB0101DRLR is explicitly designed for push-pull CMOS logic only, as confirmed in its functional description and application guidance.
What is the maximum data rate supported by the TXB0101DRLR?
The TXB0101DRLR supports up to 100 Mbps, achievable when VCCA = 2.5V or 3.3V and VCCB = 2.5V, 3.3V, or 5V. At lower voltages-e.g., VCCA = 1.2V-the max rate is 20 Mbps. These values are measured under specified load conditions (15 pF, 10 MHz PRR) and reflect actual switching characteristics documented in the TXB0101DRLR datasheet across all operating temperatures.
How does the TXB0101DRLR handle power sequencing and partial power-down?
The TXB0101DRLR incorporates VCC isolation: if either VCCA or VCCB drops to GND, all outputs automatically enter high-impedance state-preventing bus contention during asymmetric power-up/down. It also supports Ioff, disabling I/Os to block damaging backflow current when one side is unpowered. These features are integral to the TXB0101DRLR's design and validated per JEDEC JESD78 Class II latch-up testing.
TXB0101DRLR 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-563, SOT-666
TXB0101DRLR FAQ
1.How can I place an order for TXB0101DRLR through Aetrix?
Please submit a Request for Quotation (RFQ) for TXB0101DRLR 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 TXB0101DRLR reliable?
The price and inventory of TXB0101DRLR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TXB0101DRLR is usually 5 days.
3.What payment methods are accepted for TXB0101DRLR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TXB0101DRLR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TXB0101DRLR?
TXB0101DRLR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TXB0101DRLR 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 TXB0101DRLR?
For technical support, including TXB0101DRLR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TXB0101DRLR requirements.
6.How does Aetrix verify that TXB0101DRLR is sourced from the original manufacturer or authorized distributors?
All TXB0101DRLR 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 TXB0101DRLR meets industry standards.
7.What is the process for return or replacement of TXB0101DRLR?
All TXB0101DRLR units undergo pre-shipment inspection (PSI). If there is an issue with TXB0101DRLR, 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 TXB0101DRLR part is unused and in its original packaging.
Return procedure for TXB0101DRLR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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