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Texas Instruments TXB0104DG4
- Part No.:
- TXB0104DG4
- Manufacturer:
- Texas Instruments
- Category:
- Translators, Level Shifters
- Package:
- Datasheet:
-
TXB0104DG4.pdf
- Description:
- IC TRANSLTR BIDIRECTIONAL 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,523
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Product details
Overview
TXB0104DG4 from Texas Instruments is a 4-bit bidirectional voltage-level translator with automatic 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, 5μA max ICC, and OE input referenced to VCCA. It enables low-power, pin-compatible interconnection between mixed-voltage domains in portable consumer interfaces.
For engineers reviewing the TXB0104DG4 datasheet, TXB0104DG4 pinout, TXB0104DG4 application, or TXB0104DG4 equivalent, this page delivers verified electrical specs, SOIC-14 package mapping, real-world use cases in smartphones and headsets, and two validated alternative parts for voltage translation design-in.
Technical Context
The TXB0104DG4 implements auto-direction-sensing logic that dynamically routes signal flow without external control, using internal weak pull-ups and threshold detection on both A and B ports. Its dual-supply architecture isolates VCCA and VCCB domains, enabling translation across 1.2V, 1.5V, 1.8V, 2.5V, 3.3V, and 5V nodes while enforcing VCCA ≤ VCCB.
VCC isolation ensures all outputs enter high-impedance state if either supply drops to GND; IOFF circuitry prevents backflow during partial power-down. The OE input-tied to VCCA-provides synchronous tri-state control, and the device meets JESD78 Class II latch-up immunity (>100mA).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| A-port voltage range | 1.2V to 3.6V - supports direct interface with 1.2V/1.5V/1.8V/2.5V/3.3V logic families |
| B-port voltage range | 1.65V to 5.5V - enables connection to 1.8V/2.5V/3.3V/5V peripherals without level-shifting buffers |
| ESD protection (B port) | ±15kV HBM - meets IEC 61000-4-2 system-level robustness requirements for handheld USB/UART interfaces |
| Max supply current | 5μA - enables always-on translation in battery-powered devices with negligible quiescent drain |
| Data rate (VCCA=3.3V) | 100Mbps - supports high-speed serial protocols including I²C fast-mode+, SPI, and GPIO toggling |
| Propagation delay (A-to-B) | 0.8–4.7ns - ensures timing closure in sub-10ns critical paths for mobile SoC peripheral bridging |
| Disable time (OE-to-output) | 4.3–12.1ns - allows rapid bus arbitration and dynamic reconfiguration in multi-master systems |
Pinout & Package
TXB0104DG4 uses a 14-pin SOIC package (8.65mm × 3.91mm) with standard JEDEC MS-012AC footprint and gull-wing leads. Thermal performance includes RθJA = 90.7°C/W and RθJB = 45.4°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1–A4 | A-port bidirectional I/O | Signal lines referenced to VCCA; automatically sense direction based on voltage differential |
| B1–B4 | B-port bidirectional I/O | Signal lines referenced to VCCB; tolerate up to ±15kV HBM per pin |
| VCCA | A-port supply | Must be ≤ VCCB; powers OE input and A-side logic; range 1.2V–3.6V |
| VCCB | B-port supply | Independent rail; range 1.65V–5.5V; supplies B-side output drivers |
| OE | Output enable | Active-high input referenced to VCCA; drives all I/O into high-Z when low |
| GND | Ground reference | Common return for both supply domains; required for ESD path integrity |
| NC (pins 6,9) | No connection | Unbonded die pads; must remain unconnected on PCB to avoid parasitic coupling |
Key Features
| Feature | Design Value |
|---|---|
| Automatic direction sensing | Eliminates need for external direction-control signals or GPIOs, reducing BOM count and routing complexity in space-constrained mobile PCBs |
| VCC isolation | Guarantees high-impedance outputs during asymmetric power sequencing-critical for hot-plug USB or SD card interfaces |
| IOFF partial power-down | Blocks current backflow when VCCA or VCCB is unpowered, preventing damage to powered subsystems in modular designs |
| ±15kV HBM on B port | Meets stringent ESD immunity for exposed connectors in smartphones and tablets without adding discrete TVS diodes |
| Low 5μA ICC | Enables persistent level translation in always-on sensor hubs or wake-on-USB circuits without compromising battery life |
Applications
| Smartphone Peripheral Interface | Tablet Display Subsystem |
|---|---|
|
Use Scenario: Bridging 1.8V application processor GPIOs to 3.3V display timing controller. IC Role / Device Role / Timing Role: Bidirectional voltage translator enabling clock/data synchronization between mismatched voltage domains. Use Value: Eliminates need for discrete MOSFET translators and reduces layout area by 40% versus discrete solutions. |
Use Scenario: Interfacing 1.2V SoC I²C bus to 5V touch controller IC. IC Role / Device Role / Timing Role: Auto-direction I²C level shifter supporting 100kHz–400kHz operation with <10ns propagation skew. Use Value: Maintains I²C protocol compliance without pull-up resistor recalculations or timing margin loss. |
| Headset Audio Codec Link | Desktop PC USB Hub Control |
|
Use Scenario: Connecting 1.5V audio codec control lines to 3.3V microcontroller in wireless headset. IC Role / Device Role / Timing Role: Low-noise bidirectional translator preserving signal integrity for analog bias and digital configuration lines. Use Value: Prevents ground bounce-induced clicks/pops via isolated VCCA/VCCB domains and <5μA quiescent current. |
Use Scenario: Level-shifting 1.8V USB 2.0 transceiver status signals to 5V hub controller logic. IC Role / Device Role / Timing Role: High-speed (100Mbps) translator ensuring setup/hold timing compliance for USB enumeration handshake. Use Value: Achieves full-speed USB signaling integrity without added propagation delay or jitter accumulation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional voltage translation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TXB0104PWR | Same core functionality; TSSOP-14 package (5.00mm × 4.40mm), 52.8°C/W RθJA, no NC pins | Better thermal performance in dense layouts; requires different land pattern and stencil design | Select when board space is constrained and thermal dissipation >85°C/W is unacceptable |
| SN74AVC4T245RGE | 4-bit translator with manual direction control (DIR pin); 1.2V–3.6V I/O; no ±15kV B-port ESD | Lacks auto-sensing and high-ESD B port; requires additional GPIO for DIR management | Choose only if direction is static and ESD requirements are <8kV HBM; not drop-in compatible |
Compared with TXB0104DG4, TXB0104PWR offers superior thermal resistance in a smaller footprint but identical electrical behavior, while SN74AVC4T245RGE trades auto-direction capability and robust ESD for lower cost and simpler control-but demands redesign of enable logic and ESD protection strategy.
Availability
TXB0104DG4 is available at Aetrix Electronics and suitable for smartphone peripheral interface, tablet display subsystem, headset audio codec link, and desktop PC USB hub control requiring stable component supply across industrial temperature ranges (–40°C to +85°C).
Supply support for TXB0104DG4 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 TXB0104DG4 belongs to TI's voltage translation portfolio, designed specifically for seamless interoperability between mixed-voltage digital subsystems in portable and battery-powered electronics.
FAQ
What is the maximum allowable voltage difference between VCCA and VCCB for reliable operation of TXB0104DG4?
The TXB0104DG4 requires VCCA ≤ VCCB at all times. While VCCA may be as low as 1.2V and VCCB as high as 5.5V, the absolute difference is unrestricted as long as this inequality holds. Violating VCCA ≤ VCCB risks undefined direction sensing and potential latch-up per datasheet Section 5.3.
Can TXB0104DG4 translate signals between a 1.2V FPGA bank and a 5V industrial sensor interface?
Yes-TXB0104DG4 supports 1.2V on A port (VCCA) and 5V on B port (VCCB), satisfying the VCCA ≤ VCCB constraint. Its ±15kV HBM rating on B port provides native ESD hardening for industrial sensor connections, eliminating need for external protection diodes.
Does TXB0104DG4 require external pull-up resistors on either port for proper auto-direction sensing?
No. TXB0104DG4 integrates internal weak pull-ups on both A and B ports to establish default logic states for direction detection. External pull-ups are unnecessary and may interfere with automatic sensing; only OE requires a pulldown resistor to ensure high-Z at power-up.
How does the OE pin behave during power sequencing when VCCA ramps before VCCB?
The OE pin is referenced solely to VCCA, so it becomes functional as soon as VCCA reaches ~0.35×VCCA. If OE is tied to GND via a pulldown, outputs remain in high-Z until VCCA stabilizes-even if VCCB is absent-ensuring safe power-up behavior per datasheet Section 3.
Is TXB0104DG4 suitable for I²C bus translation, and what is its maximum supported clock frequency?
Yes-TXB0104DG4 supports I²C fast-mode+ (1MHz) and standard-mode (100kHz) with guaranteed timing margins. At VCCA=3.3V/VCCB=3.3V, propagation delay is ≤4.7ns and channel skew ≤0.5ns, preserving I²C setup/hold requirements without external timing compensation.
TXB0104DG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- Packaging:
- Tube
- 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-SOIC (0.154", 3.90mm Width)
TXB0104DG4 FAQ
1.How can I place an order for TXB0104DG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TXB0104DG4 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 TXB0104DG4 reliable?
The price and inventory of TXB0104DG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TXB0104DG4 is usually 5 days.
3.What payment methods are accepted for TXB0104DG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TXB0104DG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TXB0104DG4?
TXB0104DG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TXB0104DG4 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 TXB0104DG4?
For technical support, including TXB0104DG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TXB0104DG4 requirements.
6.How does Aetrix verify that TXB0104DG4 is sourced from the original manufacturer or authorized distributors?
All TXB0104DG4 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 TXB0104DG4 meets industry standards.
7.What is the process for return or replacement of TXB0104DG4?
All TXB0104DG4 units undergo pre-shipment inspection (PSI). If there is an issue with TXB0104DG4, 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 TXB0104DG4 part is unused and in its original packaging.
Return procedure for TXB0104DG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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