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Texas Instruments TXB0101YZPR
- Part No.:
- TXB0101YZPR
- Manufacturer:
- Texas Instruments
- Category:
- Translators, Level Shifters
- Package:
- Datasheet:
-
TXB0101YZPR.pdf
- Description:
- IC TRANSLTR BIDIRECTIONAL 6DSBGA
- Quantity:
- Payment:
- Shipping:
Inventory:5,272
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Product details
Overview
TXB0101YZPR 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/5V, and Ioff partial-power-down capability. It enables level-shifting between low-voltage logic domains in portable consumer interfaces.
For engineers reviewing the TXB0101YZPR datasheet, TXB0101YZPR pinout, TXB0101YZPR application, or TXB0101YZPR equivalent, key selection criteria include dual-supply rail independence, absence of direction-control pins, high-impedance state during power sequencing, OE-referenced-to-VCCA control, and DSBGA package suitability for space-constrained mobile PCB layouts.
Technical Context
The TXB0101YZPR implements edge-accelerated buffered translation using one-shot circuits to drive PMOS/NMOS transistors during signal transitions-reducing rise/fall times without requiring external direction control. Its architecture maintains weak DC output drivers that are overdriven by opposing-side signals, enabling true bidirectional data flow.
VCCA must not exceed VCCB; the device enters high-impedance when either supply drops to GND (VCC isolation), and OE input-referenced strictly to VCCA-controls global 3-state enable/disable with sub-1μs enable time and nanosecond-scale disable latency depending on package and voltage conditions.
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 be ≤ VCCB |
| B-port voltage range | 1.65V to 5.5V - enables interface to 1.8V/2.5V/3.3V/5V systems including legacy peripherals |
| Max data rate | 100 Mbps - achievable at VCCA = 2.5V/3.3V and VCCB = 2.5V/3.3V/5V, enabling high-speed serial links like UART, SPI clock lines |
| ESD rating (B port) | ±15 kV HBM - meets IEC 61000-4-2 Level 4 system-level ESD robustness for handheld end-equipment |
| Ioff current | <±2 μA - prevents backflow current during partial power-down, protecting powered-down subsystems |
| Propagation delay | 0.8–6.5 ns - varies with VCCA/VCCB; lowest at 3.3V/5V (0.8 ns A→B), critical for timing-critical signal paths |
| Output impedance (transient) | 40–70 Ω - dynamically adjusted per VCCO; ensures controlled edge rates into 70 pF loads without external termination |
Pinout & Package
TXB0101YZPR uses a 6-ball DSBGA (YZP) package measuring 0.90 mm × 1.40 mm with bottom-side ball layout. This ultra-compact package is optimized for high-density mobile PCBs and requires microvia-in-pad or solder-mask-defined pad design.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCCA | A-port supply reference | Power rail for A-side I/Os; sets VIH/VIL thresholds and OE logic levels; must be ≤ VCCB |
| GND | Common ground reference | Single ground connection shared by both ports; no separate analog/digital grounds required |
| A | Bidirectional I/O (A side) | Signal terminal referenced to VCCA; auto-senses direction based on voltage differential vs B port |
| B | Bidirectional I/O (B side) | Signal terminal referenced to VCCB; drives/receives at B-port voltage domain; handles ±15kV HBM |
| OE | Output enable control input | Active-high enable referenced to VCCA; pulls low to place A/B in high-impedance; requires pulldown resistor for power-up safety |
| VCCB | B-port supply reference | Power rail for B-side I/Os; accepts up to 5.5V; determines VOH/VOL and transient drive strength |
Key Features
| Feature | Design Value |
|---|---|
| Auto direction-sensing | Eliminates need for external direction-control signals or GPIOs, reducing routing complexity and firmware overhead in bidirectional buses |
| VCC isolation | Guarantees all outputs enter high-impedance if either VCCA or VCCB falls to GND-prevents bus contention during asymmetric power sequencing |
| NanoFree™ DSBGA package | Dies-as-package construction reduces footprint to 1.26 mm² and eliminates bond wire inductance, improving signal integrity at >50 Mbps |
| Edge-rate acceleration | One-shot circuitry cuts rise/fall times by up to 5× versus passive translators, enabling reliable 100 Mbps operation into 70 pF loads |
| OE referenced to VCCA | Ensures predictable enable timing regardless of VCCB value-critical for mixed-rail systems where VCCB may be 5V while VCCA is 1.8V |
Applications
| Smartphone Baseband–Application Processor Interface | Tablet USB OTG Data Lines |
|---|---|
Use Scenario: Connecting 1.8V application processor GPIOs to 3.3V baseband modem control lines in dual-processor architectures. IC Role / Device Role / Timing Role: Bidirectional level shifter enabling handshake signaling (e.g., IRQ, RESET, READY) without direction control logic. Use Value: Eliminates need for two unidirectional translators or FPGA-based direction management, saving 0.5 mm² PCB area per signal pair. | Use Scenario: Translating D+ and D− lines between 3.3V USB PHY and 1.2V/1.5V SoC USB controller in tablet OTG mode. IC Role / Device Role / Timing Role: High-speed bidirectional translator maintaining USB 1.1 full-speed timing margins (12 Mbps) with <6.5 ns propagation delay. Use Value: Supports hot-plug detection and session request protocol (SRP) without external pull-ups conflicting with weak output drivers. |
| Laptop Embedded Controller (EC) to Touchpad I²C | Industrial Handheld Scanner Logic Interface |
Use Scenario: Bridging 3.3V EC I²C bus to 1.8V capacitive touchpad controller in ultrabook designs. IC Role / Device Role / Timing Role: Voltage translator for open-drain I²C SDA/SCL-used only for push-pull control signals (e.g., reset, interrupt), not data lines. Use Value: Prevents bus lockup during EC reset by ensuring high-impedance state when VCCA drops, avoiding contention on shared 3.3V pull-ups. | Use Scenario: Interfacing 5V barcode scanner engine signals (trigger, status) to 1.8V ARM Cortex-M4 host MCU in ruggedized handheld scanners. IC Role / Device Role / Timing Role: Robust level shifter handling repeated ESD events from user-triggered scanning; ±15kV HBM protects B-port inputs. Use Value: Extends field reliability beyond 50,000 scan cycles without degradation-validated per JEDEC JESD22-A114 test conditions. |
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-down; no VCC isolation; lower max speed (60 Mbps); higher ICC (15 μA typical) | Required for true I²C/SMBus bidirectional data translation; unsuitable for push-pull buses with simultaneous drive capability | Select TXS0101DCKR only when translating open-drain signals; TXB0101YZPR is preferred for push-pull GPIO, UART, or SPI clock lines. |
| SN74AVC1T45DBVR | Direction-controlled (DIR pin required); no auto-sensing; higher drive strength (24 mA); no VCC isolation; 5V-tolerant inputs only on B side | Suitable for fixed-direction data paths (e.g., SPI MOSI/MISO); requires additional GPIO and firmware coordination for bidirectional use | Choose SN74AVC1T45DBVR when deterministic direction control is available and higher drive is needed; TXB0101YZPR avoids GPIO overhead and enables simpler layout. |
Compared with TXS0101DCKR and SN74AVC1T45DBVR, TXB0101YZPR uniquely delivers auto-sensing bidirectionality with VCC isolation and ultra-low quiescent current-making it optimal for space-constrained, power-sensitive, and asymmetric power-sequence applications where direction control is impractical.
Availability
TXB0101YZPR is available at Aetrix Electronics and suitable for smartphone, tablet, and industrial handheld design programs requiring stable component supply, long-term lifecycle support, and DSBGA package compatibility with fine-pitch assembly processes.
Supply support for TXB0101YZPR 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, embedded processing, and connectivity solutions for industrial, automotive, and personal electronics markets.
The TXB0101YZPR belongs to TI's voltage translation portfolio, engineered specifically for low-voltage, high-density portable systems requiring seamless interoperability between heterogeneous logic families without direction-control overhead.
FAQ
What is the maximum allowable voltage difference between VCCA and VCCB for reliable operation of TXB0101YZPR?
The TXB0101YZPR datasheet explicitly requires VCCA ≤ VCCB at all times. No positive voltage difference is permitted-VCCA must be equal to or less than VCCB. Violating this condition risks latch-up or accelerated parametric shift. For example, VCCA = 3.3V is valid only if VCCB ≥ 3.3V (e.g., 3.3V or 5V); VCCA = 3.3V with VCCB = 2.5V is prohibited and not characterized.
Can TXB0101YZPR be used to translate I²C signals between 1.8V and 3.3V domains?
No-TXB0101YZPR is designed exclusively for push-pull CMOS logic and cannot reliably translate open-drain I²C signals. Its weak output drivers conflict with I²C pull-up resistors, causing bus contention or failure to release the line. For I²C, TI recommends the TXS0101 series. TXB0101YZPR may only be used for I²C-related push-pull control signals (e.g., interrupt, reset) where bidirectional data translation is not required.
Does TXB0101YZPR require external pull-up or pull-down resistors on its A or B I/O pins?
External resistors are not required for basic operation, but if used, they must exceed 50 kΩ to avoid contention with TXB0101YZPR's weak output drivers. Lower-value resistors (e.g., standard 4.7kΩ I²C pull-ups) will overpower the device and cause functional failure. The TXB0101YZPR datasheet confirms 50 kΩ is the safe minimum; smaller values are allowed only if VOL/VOH margins can be relaxed per the provided estimation formulas.
How does the VCC isolation feature behave during power-down sequencing of TXB0101YZPR?
When either VCCA or VCCB drops to GND, all TXB0101YZPR outputs (A and B) automatically enter high-impedance state-regardless of OE status. This prevents back-driving or contention on live buses connected to the powered rail. For example, if VCCA is ramped down while VCCB remains at 3.3V, the A pin floats safely, protecting the 1.8V processor domain from 3.3V injection.
What is the significance of OE being referenced to VCCA rather than VCCB in TXB0101YZPR?
Referencing OE to VCCA ensures consistent enable/disable timing and logic thresholds independent of VCCB voltage. Since OE controls internal circuitry tied to the A-side domain, tying it to VCCA avoids metastability or undefined states when VCCB is 5V and VCCA is 1.2V. This design guarantees reliable operation across all supported VCCA/VCCB combinations without level-shifting the OE signal externally.
TXB0101YZPR 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:
- 6-XFBGA, DSBGA
TXB0101YZPR FAQ
1.How can I place an order for TXB0101YZPR through Aetrix?
Please submit a Request for Quotation (RFQ) for TXB0101YZPR 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 TXB0101YZPR reliable?
The price and inventory of TXB0101YZPR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TXB0101YZPR is usually 5 days.
3.What payment methods are accepted for TXB0101YZPR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TXB0101YZPR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TXB0101YZPR?
TXB0101YZPR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TXB0101YZPR 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 TXB0101YZPR?
For technical support, including TXB0101YZPR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TXB0101YZPR requirements.
6.How does Aetrix verify that TXB0101YZPR is sourced from the original manufacturer or authorized distributors?
All TXB0101YZPR 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 TXB0101YZPR meets industry standards.
7.What is the process for return or replacement of TXB0101YZPR?
All TXB0101YZPR units undergo pre-shipment inspection (PSI). If there is an issue with TXB0101YZPR, 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 TXB0101YZPR part is unused and in its original packaging.
Return procedure for TXB0101YZPR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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