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Texas Instruments TXB0104PWRG4
- Part No.:
- TXB0104PWRG4
- Manufacturer:
- Texas Instruments
- Category:
- Translators, Level Shifters
- Package:
- Datasheet:
-
TXB0104PWRG4.pdf
- Description:
- IC TRANSLATOR BIDIR 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,252
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Product details
Overview
TXB0104PWRG4 from Texas Instruments is a 4-bit bidirectional voltage-level translator with automatic direction sensing, supporting 1.2V–3.6V on the A port and 1.65V–5.5V on the B port (VCCA ≤ VCCB), ±15kV HBM ESD protection on the B port, 5μA max ICC, and IOFF partial power-down capability. It enables low-power interconnection between mixed-voltage domains in portable consumer interfaces.
For engineers reviewing the TXB0104PWRG4 datasheet, TXB0104PWRG4 pinout, TXB0104PWRG4 application, or TXB0104PWRG4 equivalent, key selection factors include its dual-rail operation, OE-referenced-to-VCCA control logic, high-impedance state behavior during power sequencing, and package-specific timing performance across VCCA/VCCB combinations.
Technical Context
The TXB0104PWRG4 implements auto-direction-sensing translation using internal weak pull-up/pull-down networks on each I/O pair, eliminating external direction-control signals. Its VCC isolation feature forces all outputs into high-impedance when either VCCA or VCCB is at GND, preventing backdrive during power sequencing.
OE input is referenced to VCCA and controls tri-state mode for both A- and B-port I/Os simultaneously. The device supports IOFF current limiting to block damaging back-current flow when one supply is powered down while the other remains active.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCCA Range | 1.2V to 3.6V - powers A-port I/Os and OE logic; must be ≤ VCCB for safe operation |
| VCCB Range | 1.65V to 5.5V - powers B-port I/Os; enables translation to 5V logic domains |
| ESD Protection (B port) | ±15kV HBM - meets stringent system-level ESD requirements for handheld interfaces |
| Max ICC | 5μA - enables ultra-low static power in battery-powered sleep modes |
| Data Rate | Up to 100Mbps - supports high-speed serial links like I²C fast-mode+, UART, and GPIO expansion |
| IOFF | ≤2μA - prevents destructive back-current during partial power-down of host or peripheral |
| Propagation Delay | 0.8–11ns (A↔B) - varies with VCCA/VCCB; sub-5ns typical at 2.5V/3.3V enables timing-critical paths |
Pinout & Package
TSSOP-14 package (4.40mm × 5.00mm), lead pitch 0.65mm, exposed pad not present. Compatible with standard reflow profiles and automated optical inspection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1–A4 | A-port bidirectional I/O | Referenced to VCCA; automatically senses direction; supports 1.2V–3.6V logic |
| B1–B4 | B-port bidirectional I/O | Referenced to VCCB; supports 1.65V–5.5V logic; ±15kV HBM protected |
| VCCA | A-port supply | Must be ≤ VCCB; powers OE input and A-side circuitry |
| VCCB | B-port supply | Enables level translation up to 5V; supplies B-side drivers and ESD structures |
| OE | Output enable | Active-low, VCCA-referenced; places all A/B I/Os in high-impedance when low |
| GND | Ground reference | Common return for both supply domains; required for ESD path integrity |
| NC | No connection | Pins 6 and 9 are unconnected internally; must be left floating or grounded per layout guidelines |
Key Features
| Feature | Design Value |
|---|---|
| Automatic direction sensing | Eliminates need for external DIR signal and associated routing, reducing PCB layer count and firmware complexity |
| VCC isolation | Guarantees high-impedance outputs when either VCCA or VCCB = 0V, preventing bus contention during power-up/down sequences |
| IOFF partial power-down | Blocks >99% of back-current flow when one rail is unpowered, protecting powered peripherals from latch-up or damage |
| ±15kV B-port HBM ESD | Meets IEC 61000-4-2 Level 4 for system-level robustness in smartphone/headset USB/UART interfaces |
| Low ICC (5μA max) | Reduces quiescent current in always-on subsystems such as headset detection or sensor hubs |
Applications
| Smartphone Peripheral Interface | Tablet I²C Sensor Hub |
|---|---|
Use Scenario: Connecting 1.8V camera module I²C lines to 3.3V application processor. IC Role / Device Role / Timing Role: Bidirectional level translation with automatic direction detection on SDA/SCL lines. Use Value: Eliminates external direction control logic and reduces BOM count by one IC while maintaining 100kHz–400kHz I²C timing compliance. |
Use Scenario: Interfacing 2.5V ambient light and accelerometer sensors to 1.2V microcontroller in ultra-low-power tablet mode. IC Role / Device Role / Timing Role: Voltage translation enabling mixed-supply sensor aggregation without clock stretching penalties. Use Value: Supports 100Mbps data rate and sub-5ns propagation delay, preserving timing margins for burst-mode sensor reads. |
| Desktop PC USB-C Sideband Use | Headset Audio Codec Interface |
Use Scenario: Translating 3.3V USB-C CC line signaling to 1.2V USB controller GPIO in desktop motherboard design. IC Role / Device Role / Timing Role: Unidirectional or bidirectional level shift for configuration channel handshaking. Use Value: ±15kV HBM protection on B port safeguards CC line against user-handling ESD events before connector insertion. |
Use Scenario: Bridging 1.5V digital audio interface (I²S/PCM) from codec to 3.3V baseband processor in wired headset. IC Role / Device Role / Timing Role: Low-latency, low-skew translation of bit-clock and data lines with matched A/B propagation delays. Use Value: Channel-to-channel skew ≤0.5ns ensures jitter-free audio sampling clock alignment across stereo channels. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional voltage-level translation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TXS0104E | Lower drive strength (2mA vs 8mA), no VCC isolation, 1.65–3.6V only on both sides | Suitable for low-speed, low-current I²C but not 5V-tolerant or high-ESD environments | Select TXB0104PWRG4 when 5V B-port support, ±15kV ESD, or VCC isolation is required |
| SN74AVC4T245 | Direction-controlled (DIR pin required), higher ICC (20μA), no IOFF, 1.2–3.6V only | Requires additional GPIO and firmware coordination; lacks automatic sensing and power-down safety | Choose TXB0104PWRG4 for simplified layout, reduced firmware overhead, and safer partial-power operation |
Compared with TXS0104E and SN74AVC4T245, TXB0104PWRG4 uniquely combines automatic direction sensing, 5V-tolerant B-port operation, ±15kV HBM protection, and VCC-isolation safety-making it the only option among the three qualified for robust, low-footprint, mixed-rail mobile interface designs.
Availability
TXB0104PWRG4 is available at Aetrix Electronics and suitable for smartphone peripheral interface, tablet sensor hub, desktop PC USB-C sideband use, and headset audio codec interface requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for TXB0104PWRG4 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 headquartered in Dallas, Texas, delivering analog and embedded processing solutions for industrial, automotive, personal electronics, and communications markets.
The TXB0104 product line targets space-constrained, battery-sensitive portable systems requiring robust, autonomous voltage translation without direction-control overhead or external biasing.
FAQ
What is the maximum allowable voltage difference between VCCA and VCCB for reliable operation of TXB0104PWRG4?
VCCA must not exceed VCCB under any operating condition. The absolute maximum ratings allow VCCA up to 4.6V and VCCB up to 6.5V, but functional operation requires VCCA ≤ VCCB. For example, 3.3V on VCCA and 3.3V or 5V on VCCB is valid; 3.3V on VCCA and 1.8V on VCCB violates the constraint and may cause malfunction or damage. This requirement ensures correct internal biasing of the pass-gate transistors.
Does TXB0104PWRG4 require external pull-up resistors on the A or B ports?
TXB0104PWRG4 does not require external pull-ups for basic bidirectional translation, as its auto-direction-sensing circuitry includes internal weak pull-ups and pull-downs. However, external pull-ups may still be needed for open-drain protocols like I²C to meet rise-time specifications-especially at higher bus capacitances or speeds. The internal networks are optimized for direction detection, not signal integrity.
How does the OE pin behave during power-up, and what is the recommended handling for glitch-free initialization of TXB0104PWRG4?
The OE pin is referenced to VCCA and must be held low via a pulldown resistor during power-up to ensure all outputs remain in high-impedance until both VCCA and VCCB are stable. TI recommends a resistor value that accounts for the OE input leakage (≤2μA) and driver sourcing capability-typically 10kΩ to 100kΩ. Leaving OE floating risks undefined output states and potential bus contention.
Can TXB0104PWRG4 translate between 1.2V and 5V logic levels in both directions without timing degradation?
Yes-TXB0104PWRG4 supports 1.2V ↔ 5V translation with verified timing. At VCCA = 1.2V and VCCB = 5V, the maximum data rate is 20Mbps (per Section 5.7), and propagation delay is ≤5.5ns (A-to-B) and ≤5.8ns (B-to-A). These values are measured and guaranteed across temperature, confirming full bidirectional functionality across the entire supported voltage range.
Is the TSSOP-14 package of TXB0104PWRG4 RoHS-compliant and lead-free?
Yes, TXB0104PWRG4 is manufactured in a RoHS-compliant, lead-free TSSOP-14 package per TI's official packaging documentation. The "G4" suffix denotes green (halogen-free) and lead-free construction, qualified to JEDEC J-STD-020 moisture sensitivity level 1 (MSL-1) for unlimited floor life at ≤30°C/85% RH.
TXB0104PWRG4 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:
- 4
- 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:
- 14-TSSOP (0.173", 4.40mm Width)
TXB0104PWRG4 FAQ
1.How can I place an order for TXB0104PWRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TXB0104PWRG4 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 TXB0104PWRG4 reliable?
The price and inventory of TXB0104PWRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TXB0104PWRG4 is usually 5 days.
3.What payment methods are accepted for TXB0104PWRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TXB0104PWRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TXB0104PWRG4?
TXB0104PWRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TXB0104PWRG4 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 TXB0104PWRG4?
For technical support, including TXB0104PWRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TXB0104PWRG4 requirements.
6.How does Aetrix verify that TXB0104PWRG4 is sourced from the original manufacturer or authorized distributors?
All TXB0104PWRG4 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 TXB0104PWRG4 meets industry standards.
7.What is the process for return or replacement of TXB0104PWRG4?
All TXB0104PWRG4 units undergo pre-shipment inspection (PSI). If there is an issue with TXB0104PWRG4, 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 TXB0104PWRG4 part is unused and in its original packaging.
Return procedure for TXB0104PWRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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