Specifications
| Type | Description |
|---|---|
| Part Number | TXB0108 |
| Manufacturer | Texas Instruments |
| Product Type | Operational Amplifier |
| Category | Signal Chain |
| Package / Case | SON-20 2.00mm x 4.00mm; BGA MICROSTAR JUNIOR-20 2.50mm x 3.00mm; TSSOP-20 6.50mm x 4.40mm; VQFN-20 4.50mm x 3.50mm; DSGBA-20 1.90mm x 2.40mm; nFBGA-20 2.50mm x 3.00mm; WQFN-20 3.00mm x 3.00mm; VSSOP-20 5.10mm x 3.00mm; VQFN-20 4.50mm x 2.50mm |
| Translator Width | 8-bit; bidirectional noninverting voltage-level translator |
| Direction Control | Auto-direction sensing; bidirectional translation without explicit direction pin |
| A-Port Supply Voltage Range | 1.2 to 3.6 V; VCCA must be less than or equal to VCCB |
| B-Port Supply Voltage Range | 1.65 to 5.5 V |
| Supported Translation Nodes | 1.2 V, 1.5 V, 1.8 V, 2.5 V, 3.3 V, 5 V; VCCA must not exceed VCCB |
| Output Enable Input Reference | Referenced to VCCA; OE input circuit supplied by VCCA |
| Output State When OE Low | High impedance; OE pulled low places all outputs in 3-state mode |
| VCC Isolation Feature | All outputs high impedance if either VCC input is at GND |
| Low Power Consumption | 4 uA max ICC |
| Partial-Power-Down Support | Ioff supported; disables outputs to prevent current backflow when powered down |
| Latch-Up Performance | >100 mA; per JESD 78 Class II |
| Absolute Maximum VCCA | -0.5 to 4.6 V; supply voltage range over operating free-air temperature |
| Absolute Maximum VCCB | -0.5 to 6.5 V; supply voltage range over operating free-air temperature |
| Absolute Maximum Input Voltage | -0.5 to 6.5 V |
| High-Impedance or Power-Off Output Voltage Range | -0.5 to 6.5 V; voltage applied to any output in high-impedance or power-off state |
| A-Port Output Voltage Range in High or Low State | -0.5 to VCCA + 0.5 V |
| B-Port Output Voltage Range in High or Low State | -0.5 to VCCB + 0.5 V |
| Input Clamp Current | -50 mA; VI < 0 |
| Output Clamp Current | -50 mA; VO < 0 |
| Continuous Output Current | ±50 mA; absolute maximum rating |
| Continuous Current Through Supply or Ground | ±100 mA; through VCCA, VCCB, or GND |
| Storage Temperature Range | -65 to 150 °C |
| Junction Temperature | 150 °C |
| Operating Free-Air Temperature | -40 to 85 °C |
| High-Level Input Voltage | VCCI x 0.65; data inputs, VCCA=1.2V to 3.6V, VCCB=1.65V to 5.5V |
| High-Level OE Input Voltage | VCCA x 0.65 to 5.5 V |
| Low-Level Input Voltage | 0 to VCCI x 0.35 V; data inputs |
| Low-Level OE Input Voltage | 0 to VCCA x 0.35 V; OE input, VCCA=1.2V to 3.6V |
| A-Port Input Transition Rise or Fall Rate | 40 ns/V max; VCCA=1.2V to 3.6V, VCCB=1.65V to 5.5V |
| B-Port Input Transition Rise or Fall Rate | 40 ns/V max; VCCB=1.65V to 3.6V |
| B-Port Input Transition Rise or Fall Rate | 30 ns/V max; VCCB=4.5V to 5.5V |
| A-Port HBM ESD Rating | 2000 V; human body model per ANSI/ESDA/JEDEC JS-001 |
| B-Port HBM ESD Rating | ±15 kV; human body model per ANSI/ESDA/JEDEC JS-001 |
| A-Port CDM ESD Rating | 1000 V; charged device model per JEDEC JESD22-C101 |
| A-Port CDM ESD Rating for YZP Package | ±8 kV; charged device model per JEDEC JESD22-C101, YZP package only |
| B-Port CDM ESD Rating | 1000 V; charged device model per JEDEC JESD22-C101 |
| Thermal Resistance Junction-to-Ambient | 101.8, 35.3, 108.5, 66.2, 156.7, 156.7, 56.4, 58.8, 131.4, 111.9 °C/W for PW, RGY, DQS, YZP, GXY, ZXY, NME, RUK, DGS, RKS packages respectively |
| A-Port High-Level Output Voltage | 1.1 V min; DGS/RUK/RKS, VCCA=1.2V, IOH=-20uA |
| A-Port High-Level Output Voltage | VCCA - 0.4 V min; DGS/RUK/RKS, VCCA=1.4V to 3.6V, IOH=-20uA |
| A-Port Low-Level Output Voltage | 0.3 V max; DGS/RUK/RKS, VCCA=1.2V, IOL=20uA |
| Pullup or Pulldown Resistor Guidance | >50 kΩ; if pullup or pulldown resistors are needed on Logic I/O |
| Datasheet Status | request_only |
Product Overview
TXB0108 is an 8-bit bidirectional noninverting voltage-level translator for Signal_Chain designs that need universal low-voltage translation across common logic nodes. The device uses auto-direction sensing for bidirectional translation without an explicit direction-control pin. Its A-port supply range is 1.2 to 3.6 V, and its B-port supply range is 1.65 to 5.5 V, with the operating requirement that VCCA must be less than or equal to VCCB.
The device supports 1.2 V, 1.5 V, 1.8 V, 2.5 V, 3.3 V, and 5 V translation nodes. OE is referenced to VCCA because the OE input circuit is supplied by VCCA. When OE is low, all outputs enter high-impedance 3-state mode. The VCC isolation feature also places all outputs in high impedance if either VCC input is at GND, and Ioff circuitry supports partial-power-down behavior by preventing current backflow when powered down.
Package options include SON-20, BGA MICROSTAR JUNIOR-20, TSSOP-20, VQFN-20, DSGBA-20, nFBGA-20, WQFN-20, and VSSOP-20 footprints. Operating free-air temperature is -40 to 85 °C, storage temperature is -65 to 150 °C, and junction temperature is rated to 150 °C.
Key Features
- 8-bit bidirectional noninverting voltage-level translation
- Auto-direction sensing without explicit direction-control pin
- A-port supply range from 1.2 to 3.6 V
- B-port supply range from 1.65 to 5.5 V
- Supports 1.2 V through 5 V translation nodes
- OE input referenced to VCCA supply
- OE low places all outputs in high impedance
- VCC isolation when either supply is at GND
- Ioff support prevents powered-down current backflow
- 4 uA max ICC low-power consumption
Typical Applications
- Bidirectional logic-level translation
- Low-voltage signal-chain interfaces
- 1.2 V to 5 V logic translation
- Mixed-supply digital connections
- Partial-power-down signal isolation
- Auto-direction bus translation
- High-impedance output control
Procurement Notes
When requesting a quote for TXB0108, buyers should confirm the manufacturer, package or case, required quantity, target date code, compliance documents, packing method, destination country and expected delivery schedule.
If alternatives are acceptable, buyers should share the approved vendor list, required electrical or optical limits, package constraints and qualification requirements. Any alternative part should be reviewed by the buyer's engineering team before production use.
For analog and signal-chain sourcing, supply voltage, bandwidth, accuracy, noise level, package, temperature grade, input/output configuration and qualification requirements should be verified before approval.
FAQ
What type of translator is the TXB0108?
TXB0108 is an 8-bit bidirectional noninverting voltage-level translator from Texas Instruments. It uses auto-direction sensing, so bidirectional translation is supported without a separate direction-control pin.
What supply ranges does TXB0108 support?
The A-port supply range is 1.2 to 3.6 V, and the B-port supply range is 1.65 to 5.5 V. The operating condition requires VCCA to be less than or equal to VCCB.
What happens when OE is low on TXB0108?
The OE input is referenced to VCCA. When OE is pulled low, all outputs are placed in high-impedance 3-state mode according to the extracted datasheet facts.
Does TXB0108 support partial-power-down operation?
Yes. TXB0108 supports Ioff circuitry, which disables outputs to help prevent current backflow when the device is powered down. It also places all outputs in high impedance if either VCC input is at GND.
What package options are listed for TXB0108?
Listed package options include SON-20, BGA MICROSTAR JUNIOR-20, TSSOP-20, VQFN-20, DSGBA-20, nFBGA-20, WQFN-20, and VSSOP-20 package cases with the dimensions provided in the extracted facts.
Technical Review & Sourcing Note
Prepared by LDeepAI Component Sourcing Team. Reviewed for RFQ, documentation and alternative sourcing use. Last updated: June 30, 2026.
This page is based on manufacturer datasheet information and LDeepAI sourcing review. Specifications should be verified against the official manufacturer datasheet before final procurement or design approval. Final electrical, optical and reliability approval should be confirmed by the buyer's engineering team.