component
TXS0108E
Public Made by Adomby adom
TI 8-bit bidirectional level translator, TSSOP-20. Auto-direction, 1.4-3.6 V / 1.65-5.5 V. Datasheet-verified.
3D Model
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Symbol & Footprint
Schematic Symbol
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Datasheet
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README
markdownTXS0108E
Texas Instruments · Bidirectional level translator · TSSOP-20
8-bit non-inverting bidirectional voltage-level translator with automatic direction sensing, in a TSSOP-20 package. It shifts eight signals between any two of the 1.5, 1.8, 2.5, 3.3, and 5 V rails (VCCA 1.4-3.6 V, VCCB 1.65-5.5 V), with no direction pin, so it Just Works on I2C, SPI, and GPIO between a 3.3 V MCU and 5 V peripherals. An OE pin puts all I/Os in high-Z. The default bus level shifter.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | A1 | bidirectional | A-port channel 1 I/O, referenced to VCCA. Auto-sensing bidirectional level-shifted data line paired with B1. Requires an external pull-up at each end for open-drain operation; drives push-pull otherwise. |
| 2 | VCCA | power_in | A-port supply rail. 1.4V ≤ VCCA ≤ 3.6V and VCCA ≤ VCCB. Sets the logic level for the A-side channels and OE input. Bypass locally with 0.1µF. |
| 3 | A2 | bidirectional | A-port channel 2 I/O, referenced to VCCA. Paired with B2 for auto-sensing bidirectional level shifting. |
| 4 | A3 | bidirectional | A-port channel 3 I/O, referenced to VCCA. Paired with B3. |
| 5 | A4 | bidirectional | A-port channel 4 I/O, referenced to VCCA. Paired with B4. |
| 6 | A5 | bidirectional | A-port channel 5 I/O, referenced to VCCA. Paired with B5. |
| 7 | A6 | bidirectional | A-port channel 6 I/O, referenced to VCCA. Paired with B6. |
| 8 | A7 | bidirectional | A-port channel 7 I/O, referenced to VCCA. Paired with B7. |
| 9 | A8 | bidirectional | A-port channel 8 I/O, referenced to VCCA. Paired with B8. |
| 10 | OE | input | Output-enable. Referenced to VCCA. Drive high to enable translation on all 8 channels; drive low to place every A and B channel in the high-impedance (Hi-Z) state. Tie to GND through a pull-down during power-up/down to keep the device in Hi-Z (VIH ≥ 0.65·VCCA, VIL ≤ 0.35·VCCA). |
| 11 | GND | power_in | Device ground. Connect to the system ground reference. |
| 12 | B8 | bidirectional | B-port channel 8 I/O, referenced to VCCB. Paired with A8. |
| 13 | B7 | bidirectional | B-port channel 7 I/O, referenced to VCCB. Paired with A7. |
| 14 | B6 | bidirectional | B-port channel 6 I/O, referenced to VCCB. Paired with A6. |
| 15 | B5 | bidirectional | B-port channel 5 I/O, referenced to VCCB. Paired with A5. |
| 16 | B4 | bidirectional | B-port channel 4 I/O, referenced to VCCB. Paired with A4. |
| 17 | B3 | bidirectional | B-port channel 3 I/O, referenced to VCCB. Paired with A3. |
| 18 | B2 | bidirectional | B-port channel 2 I/O, referenced to VCCB. Paired with A2. |
| 19 | VCCB | power_in | B-port supply rail. 1.65V ≤ VCCB ≤ 5.5V and must be ≥ VCCA. Sets the logic level for the B-side channels. Bypass locally with 0.1µF. |
| 20 | B1 | bidirectional | B-port channel 1 I/O, referenced to VCCB. Paired with A1. |
Key specifications
| Parameter | Value |
|---|---|
| Type | 8-bit bidirectional level translator |
| Direction | Automatic sensing (no DIR pin) |
| A-side supply (VCCA) | 1.4-3.6 V |
| B-side supply (VCCB) | 1.65-5.5 V |
| Channels | 8 |
| Output enable | OE pin (Hi-Z) |
| Package | TSSOP-20 |
| Body (L×W×H) | 6.5 × 4.4 × 1.2 mm |
Ordering variants
Same part, different packaging or reel option.
TXS0108EPWR (TSSOP-20, tape & reel)
CAD (KiCad official)
- Symbol:
Logic_LevelTranslator:TXS0108EPW - Footprint:
Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm - 3D model: TSSOP-20 (KiCad packages3D)
- 3D model files:
txs0108e-etched.step/txs0108e-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);txs0108e.step/txs0108e.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (45 pp, sha256
f41f9f58874399bb, retrieved 2026-08-17, tier: manufacturer) - Extractor:
ds2sf(Claude) — every pin and dimension is cited to a datasheet page; refuses to fabricate. - CAD: KiCad official libraries (CC-BY-SA 4.0).