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tca9406dctr
Public Unreviewedby Ray
Texas Instruments Translators / Level Shifters, MSOP-8. Datasheet-verified pinout, KiCad symbol/footprint/3D.
3D Model
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README
markdownTCA9406DCTR
Texas Instruments · Translators / Level Shifters · MSOP-8
TCA9406DCTR from Texas Instruments, in a MSOP-8. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | SDA_B | bidirectional | B-side SDA input/output, open-drain with internal 10-kΩ pullup to V_CCB. Referenced to V_CCB (2.3-5.5 V). High-impedance when OE = low or V_CC = 0 V. |
| 2 | GND | power_in | Ground reference for both A- and B-side supplies. |
| 3 | VCCA | power_in | A-port supply voltage. 1.65 V ≤ V_CCA ≤ 3.6 V and V_CCA ≤ V_CCB. Sets the reference rail for SDA_A, SCL_A, and OE. |
| 4 | SDA_A | bidirectional | A-side SDA input/output, open-drain with internal 10-kΩ pullup to V_CCA. Referenced to V_CCA (1.65-3.6 V). High-impedance when OE = low or V_CC = 0 V. |
| 5 | SCL_A | bidirectional | A-side SCL input/output, open-drain with internal 10-kΩ pullup to V_CCA. Referenced to V_CCA (1.65-3.6 V). High-impedance when OE = low or V_CC = 0 V. |
| 6 | OE | input | Output enable, active high. Referenced to V_CCA but is 5.5-V tolerant. Pull OE low to place all SDA/SCL outputs in 3-state (high-impedance) mode; may be tied directly to V_CCA. |
| 7 | VCCB | power_in | B-port supply voltage. 2.3 V ≤ V_CCB ≤ 5.5 V. Sets the reference rail for SDA_B and SCL_B. |
| 8 | SCL_B | bidirectional | B-side SCL input/output, open-drain with internal 10-kΩ pullup to V_CCB. Referenced to V_CCB (2.3-5.5 V). High-impedance when OE = low or V_CC = 0 V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | MSOP-8 |
| Category | Logic |
| Pins | 8 |
Ordering variants
TCA9406DCTRTCA9406DCTRDCURTCA9406DCTRYZPR
CAD (KiCad official)
- Symbol:
TCA9406DCTR - Footprint:
Package_SO:MSOP-8_3x3mm_P0.65mm - 3D model: MSOP-8 (KiCad packages3D, STEP)
3D model downloads
Two STEP files. Same geometry, different body top:
| File | Size | Use it when |
|---|---|---|
tca9406dctr.step |
123 KB | You want the bare part, or you mark your own boards. |
tca9406dctr-etched.step |
2.2 MB | You want the part with TCA9406DCTR already on it. |
The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 550 faces against 147 in the bare model. It survives export, section views, and rendering in any CAD tool, and it drops straight into KiCad or Fusion with no extra setup.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (36 pp, sha256
b6627e8f11155f16, retrieved 2026-08-17, tier: manufacturer) - Extractor:
ds2sf(Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate. - CAD: KiCad official libraries (CC-BY-SA 4.0).