TXB0104QPWRDL Texas Instruments In Stock
TXB0104QPWRDL is a 4-bit bidirectional voltage-level translator by Texas Instruments supporting 1.2 V to 3.6 V on port A and 1.65 V to 5.5 V on port B. Key specs: 4 channels, automatic direction sensing, 24 mA drive strength, 14-pin TSSOP package. From stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- —
- Pin Count
- 14
- Lifecycle
- ACTIVE
- Datasheet
- N/A
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Automatic direction-sensing bidirectional translation across 4 channels with no direction-control pin required
- Wide voltage translation: port A supports 1.2 V–3.6 V and port B supports 1.65 V–5.5 V for multi-rail system integration
- 24 mA output drive strength in a 14-pin TSSOP package enabling high-speed bus translations up to several tens of MHz
Applications
The TXB0104QPWRDL is used to bridge mixed-voltage interfaces between microcontrollers, FPGAs, and peripheral ICs in portable consumer electronics and industrial equipment. Its automatic direction sensing eliminates direction control lines, simplifying firmware and board design when connecting 1.8 V processors to 3.3 V or 5 V sensors. The TSSOP-14 footprint and wide supply range make it a compact, versatile level-shifting solution for SPI, UART, and GPIO signals.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What voltage rails does the TXB0104QPWRDL translate between, and does it need a direction-control signal?
The TXB0104QPWRDL translates between port A (1.2 V to 3.6 V) and port B (1.65 V to 5.5 V) using automatic one-shot circuitry that detects drive direction without a separate DIR pin. This makes it straightforward to connect a 1.8 V FPGA GPIO bank to 3.3 V sensors or a 3.3 V MCU to 5 V legacy peripherals across all 4 channels simultaneously.
How many bidirectional channels does the TXB0104QPWRDL provide and what interfaces can it support?
The TXB0104QPWRDL provides 4 independent bidirectional channels capable of translating SPI, UART, GPIO, and other push-pull digital signals. With 24 mA output drive capability and propagation delays below 10 ns at 3.3 V, the device supports clock and data lines running at several tens of MHz, covering most common serial peripheral communication speeds in embedded systems.
What package does the TXB0104QPWRDL use and how does it compare to the SOT-23 alternative for PCB layout?
The TXB0104QPWRDL comes in a 14-pin TSSOP package with 0.65 mm lead pitch, offering a body area of roughly 32 mm². While larger than a 2-channel SOT-23 translator, the TSSOP-14 packs all 4 channels into one component, reducing component count and total footprint compared to using two dual-channel alternatives, and simplifying routing on space-constrained multilayer boards.
Is the TXB0104QPWRDL suitable for open-drain I2C buses or only push-pull interfaces?
The TXB0104QPWRDL is optimized for push-pull signal translation and is not recommended for open-drain I2C buses without external pull-up resistors on both sides; TI recommends the PCA9306 or similar open-drain translators for I2C. For SPI and UART at up to 5.5 V on port B, the TXB0104QPWRDL's 4 channels and 1.2 V minimum VCCA make it a better fit than open-drain alternatives that require higher minimum supply voltages.
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About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
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