component
TCA4311ADGKR
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
markdownTCA4311ADGKR
Texas Instruments · Signal Buffers, Repeaters, Splitters · MSOP-8
TCA4311ADGKR 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 shutdown (<1 uA), 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 >= 0.5 x VCC, VIL <= 0.5 x VCC. |
| 2 | SCLOUT | bidirectional | Serial clock output on the card side. Connect to the SCL bus on the add-on card. Open-drain buffered clock line, requires an external pull-up resistor to VCC. |
| 3 | SCLIN | bidirectional | Serial clock input on the backplane side. Connect to the SCL bus on the backplane. Open-drain buffered clock line, requires an external pull-up resistor to VCC. |
| 4 | GND | power_in | Supply ground reference for the device. |
| 5 | READY | output | Open-drain connection flag / rise-time accelerator control output. READY is low when EN is low or the start-up sequence is not complete; goes high when EN is high and start-up is complete, indicating backplane and card sides are connected. Requires a 10-kOhm pull-up resistor to VCC. |
| 6 | SDAIN | bidirectional | Serial data input on the backplane side. Connect to the SDA bus on the backplane. Open-drain buffered data line, requires an external pull-up resistor to VCC. |
| 7 | SDAOUT | bidirectional | Serial data output on the card side. Connect to the SDA bus on the add-on card. Open-drain buffered data line, requires an external pull-up resistor to VCC. |
| 8 | VCC | power_in | Main supply voltage input from the backplane, 2.7 V to 5.5 V. Serves as the reference for the buffered I2C pull-ups on both backplane and card sides. Place a bypass capacitor of at least 0.01 uF close to this pin. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | MSOP-8 |
| Category | Interface |
| Pins | 8 |
Ordering variants
Same part, different packaging or reel option.
TCA4311ADGKRTCA4311ADGKRDTCA4311ADGKRDR
CAD (KiCad official)
- Symbol:
TCA4311ADGKR - Footprint:
Package_SO:MSOP-8_3x3mm_P0.65mm - 3D model: MSOP-8 (KiCad packages3D, STEP)
- 3D model files:
tca4311adgkr-etched.step/tca4311adgkr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);tca4311adgkr.step/tca4311adgkr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (30 pp, sha256
d01087e7243208db, 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).