component
TCA4311ADR
Public Made by Adomby adom
Texas Instruments Signal Buffers, Repeaters, Splitters, SOIC-8. Pinout cross-checked by two models against 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
markdownTCA4311ADR
Texas Instruments · Signal Buffers, Repeaters, Splitters · SOIC-8
TCA4311ADR from Texas Instruments, in a SOIC-8. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | EN | input | Active-high chip enable: when EN is low the device enters a low-current mode (<1 µA) and isolates the two sides, and EN should be held high at VCC for normal operation, with VIH of 2 V minimum and VIL of 0.8 V maximum. |
| 2 | SCLOUT | bidirectional | Serial clock output that connects to the SCL bus on the card side and is buffered from SCLIN, with open-drain I/O and a pull-up resistor required on this side. |
| 3 | SCLIN | bidirectional | Serial clock input that connects to the SCL bus on the backplane side and is buffered to SCLOUT, with open-drain I/O and a pull-up resistor required on this side. |
| 4 | GND | power_in | Supply ground for the device. |
| 5 | READY | output | Open-drain connection flag and rise-time accelerator control that is low while EN is low or start-up is incomplete, goes high when the backplane and card sides are connected, and needs a 10-kΩ pull-up resistor to VCC. |
| 6 | SDAIN | bidirectional | Serial data input that connects to the SDA bus on the backplane side and is buffered to SDAOUT, with open-drain I/O and a pull-up resistor required on this side. |
| 7 | SDAOUT | bidirectional | Serial data output that connects to the SDA bus on the card side and is buffered from SDAIN, with open-drain I/O and a pull-up resistor required on this side. |
| 8 | VCC | power_in | Supply voltage from the backplane, specified from 2.7 V to 5.5 V, with a bypass capacitor of at least 0.01 µF placed close to the pin. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-8 |
| Category | Interface |
| Pins | 8 |
CAD (KiCad official)
- Symbol:
TCA4311ADR - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files:
tca4311adr-etched.step/tca4311adr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);tca4311adr.step/tca4311adr.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 2026-10-08, tier: manufacturer) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-sonnet-5-5(agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish. - CAD: KiCad official libraries (CC-BY-SA 4.0).