component
TCA9803DGKR
Public Unreviewedby Ray
Texas Instruments Translators / Level Shifters, VSSOP-8-0.65mm. Datasheet-verified pinout, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownTCA9803DGKR
Texas Instruments · Translators / Level Shifters · VSSOP-8-0.65mm
TCA9803DGKR from Texas Instruments, in a VSSOP-8-0.65mm. 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 | VCCA | power_in | A-side supply voltage (0.8 V to 3.6 V). Referenced by SDAA, SCLA, and the EN input. |
| 2 | SCLA | bidirectional | Serial clock bus, A-side (low-voltage side). Open-drain; must be connected to VCCA through an external pull-up resistor, even if unused. |
| 3 | SDAA | bidirectional | Serial data bus, A-side (low-voltage side). Open-drain; must be connected to VCCA through an external pull-up resistor, even if unused. |
| 4 | GND | power_in | Device ground reference. |
| 5 | EN | input | Active-high repeater enable input, referenced to VCCA. Internal pull-up of ~250 kΩ (150-450 kΩ). VIH ≥ 0.7 × VCCA, VIL ≤ 0.3 × VCCA. When EN is logic low while VCCB is powered, the B-side internal current source remains enabled. |
| 6 | SDAB | bidirectional | Serial data bus, B-side (high-voltage side). Do NOT connect to VCCB through an external pull-up resistor for proper operation; the device provides an internal 3.3 mA current source. If unused, leave floating. |
| 7 | SCLB | bidirectional | Serial clock bus, B-side (high-voltage side). Do NOT connect to VCCB through an external pull-up resistor for proper operation; the device provides an internal 3.3 mA current source. If unused, leave floating. |
| 8 | VCCB | power_in | B-side and device supply voltage (1.65 V to 3.6 V). Referenced by SDAB and SCLB. No power sequencing requirement relative to VCCA. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | VSSOP-8-0.65mm |
| Category | Logic |
| Pins | 8 |
Ordering variants
Same part, different packaging or reel option.
TCA9803DGKRTCA9803DGKRDGKT
CAD (KiCad official)
- Symbol:
TCA9803DGKR - Footprint:
Package_SO:VSSOP-8_2.3x2mm_P0.5mm - 3D model: VSSOP-8-0.65mm (KiCad packages3D, STEP)
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (38 pp, sha256
5924c3803d8df694, 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).