component
TCA4307DGKR
Public Made by Adomby adom
Texas Instruments Signal Buffers, Repeaters, Splitters, MSOP-8. Pinout extracted from the datasheet, 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
markdownTCA4307DGKR
Texas Instruments · Signal Buffers, Repeaters, Splitters · MSOP-8
TCA4307DGKR 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 | EN | input | Active-high chip enable. When low, the device enters low-current mode, disables rise-time accelerators and pre-charge, drives READY low, and isolates SDAIN/SCLIN from SDAOUT/SCLOUT. Tie to VCC for normal operation if not used. VIH >= 0.7VCC, VIL <= 0.3VCC. |
| 2 | SCLOUT | bidirectional | Serial clock output to the card-side I2C bus. Open-drain, requires a pull-up resistor. Isolated from SCLIN until EN is high and start-up is complete. |
| 3 | SCLIN | bidirectional | Serial clock input from the backplane-side I2C bus. Open-drain, requires a pull-up resistor. Pre-charged to 1 V during insertion to minimize glitching. |
| 4 | GND | power_in | Device ground reference. |
| 5 | READY | output | Open-drain connection flag / rise-time accelerator control. Low when EN is low or during start-up; goes high when EN is high, start-up is complete, and the two bus sides are connected. Connect a ~10 kOhm pull-up to VCC. IOL = 3 mA, VOL <= 0.4 V. |
| 6 | SDAIN | bidirectional | Serial data input from the backplane-side I2C bus. Open-drain, requires a pull-up resistor. Pre-charged to 1 V during live insertion. |
| 7 | SDAOUT | bidirectional | Serial data output to the card-side I2C bus. Open-drain, requires a pull-up resistor. Isolated from SDAIN until EN is high and start-up is complete. |
| 8 | VCC | power_in | Main input supply from the backplane, 2.3 V to 5.5 V. Sets the supply voltage for the backplane-side I2C devices and the internal pull-ups from SDAOUT/SCLOUT. Place a 0.1 uF bypass capacitor close to this pin. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | MSOP-8 |
| Category | Comm/UART |
| Pins | 8 |
Ordering variants
Same part, different packaging or reel option.
TCA4307DGKRTCA4307DGKRDGKTTCA4307DGKRDRGRTCA4307DGKRDRGT
CAD (KiCad official)
- Symbol:
TCA4307DGKR - Footprint:
Package_SO:MSOP-8_3x3mm_P0.65mm - 3D model: MSOP-8 (KiCad packages3D, STEP)
- 3D model files:
tca4307dgkr-etched.step/tca4307dgkr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);tca4307dgkr.step/tca4307dgkr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (29 pp, sha256
904278fd916371ef, 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).