TXB0108EPWR Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
TXB0108EPWR is an 8-bit bidirectional voltage-level translator from Texas Instruments with automatic direction sensing, supporting VCCA from 1.2 V to 3.6 V and VCCB from 1.65 V to 5.5 V with ±15 kV ESD protection, packaged in a 20-pin TSSOP for mixed-voltage interface designs.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 20
- Lifecycle
- ACTIVE
- Datasheet
- TXB0108EPWR Datasheet PDF
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of TXB0108EPWR?
- 8-bit bidirectional voltage translation between 1.2 V–3.6 V (VCCA) and 1.65 V–5.5 V (VCCB) rails
- Automatic direction sensing eliminates direction-control signals
- ±15 kV ESD protection on all data I/O pins
- Push-pull outputs supporting data rates up to 100 Mbps
- OE pin for disabling outputs and placing bus in high-impedance state
- 20-pin TSSOP package for compact mixed-voltage interface circuits
- Supports 1.8 V to 3.3 V and 3.3 V to 5 V translation without level-shift resistors
What is TXB0108EPWR used for?
TXB0108EPWR is widely used in mixed-voltage system designs where 8 data lines must be translated between a 1.8 V or 2.5 V processor I/O and a 3.3 V or 5 V peripheral such as an SD card, EEPROM, or LCD controller. Its auto-direction sensing makes it ideal for bidirectional SPI and GPIO bus interfaces on embedded Linux and microcontroller boards without requiring software-controlled direction pins. The ±15 kV ESD protection also makes it suitable for user-accessible connector interfaces on industrial and consumer electronics designs.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Where can I find the TXB0108EPWR datasheet?
TXB0108EPWR Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for TXB0108EPWR?
Compatible alternatives and drop-in replacements for TXB0108EPWR:
Frequently Asked Questions
Which supply voltage combinations does TXB0108EPWR support for bidirectional level translation?
TXB0108EPWR supports VCCA (side A supply) from 1.2 V to 3.6 V and VCCB (side B supply) from 1.65 V to 5.5 V independently, enabling 1.8 V-to-3.3 V, 2.5 V-to-5 V, and 3.3 V-to-5 V translations on all 8 data channels simultaneously, covering the most common mixed-voltage interface pairings in embedded system designs.
How does TXB0108EPWR's automatic direction sensing work and why does it simplify PCB design?
TXB0108EPWR detects the direction of each signal transition using an internal one-shot circuit that senses which side drives the edge first, automatically propagating the signal from the driven side to the other side without requiring a dedicated direction-control pin per channel, reducing MCU GPIO pin usage by 8 and simplifying firmware compared to manual-direction translators such as 74LVCH8T245.
What ESD protection rating does TXB0108EPWR offer and how does it benefit user-accessible interfaces?
TXB0108EPWR provides ±15 kV ESD protection per HBM (Human Body Model) on all data I/O pins, which is more than adequate for IEC 61000-4-2 contact discharge requirements, making it appropriate for SD card slots, USB accessory connectors, and other user-touched interfaces where electrostatic discharge from human handling could otherwise damage unprotected 1.8 V or 3.3 V logic inputs.
At what maximum data rate can TXB0108EPWR translate signals for SPI or parallel bus applications?
TXB0108EPWR supports data rates up to approximately 100 Mbps per channel with push-pull outputs, which covers SPI clock frequencies up to 50 MHz in single data rate mode, and is sufficient for parallel 8-bit bus transfers at 12.5 MHz byte rate, comfortably handling most embedded microcontroller SPI, GPIO, and slow parallel interface requirements in 1.8 V to 3.3 V mixed-voltage systems.
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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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