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TS3USBCA420RSVR

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Texas Instruments Analog Switches / Multiplexers, UQFN-16(1.8x2.6). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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TS3USBCA420RSVR

Texas Instruments · Analog Switches / Multiplexers · UQFN-16(1.8x2.6)

TS3USBCA420RSVR from Texas Instruments, in a UQFN-16(1.8x2.6). 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 VCC power_in Power supply for the device, which operates from 2.4 V to 5.5 V (5.0 V nominal) and requires external decoupling capacitors close to this pin.
2 MIC_GND1/Ln1 bidirectional Analog audio MIC/AGND signal connection to the audio codec, which can also be used as a general-purpose I/O.
3 MIC_GND2/Ln2 bidirectional Analog audio MIC/AGND signal connection to the audio codec, which can also be used as a general-purpose I/O.
4 OEn input Active-low output enable: L selects normal operation, while H enters standby with I2C registers reset (default); it has an internal weak pull-up.
5 SEL1/SCL input In pin-configuration mode (I2C_EN = L) it is SEL1 for switch selection; in I2C mode it is SCL, which needs a pull-up to VI2C through 0.62 kΩ to 2.2 kΩ; failsafe input with internal weak pull-down.
6 SEL0/SDA bidirectional In pin-configuration mode (I2C_EN = L) it is SEL0 for switch selection; in I2C mode it is SDA, which needs a pull-up to VI2C through 0.62 kΩ to 2.2 kΩ; failsafe I/O with internal weak pull-down.
7 LnBp bidirectional Single-ended I/O or positive-polarity differential partner to LnBn for generic signals such as DisplayPort AUX, PCIe clock, I2C, UART, and debug.
8 LnBn bidirectional Single-ended I/O or negative-polarity differential partner to LnBp for generic signals such as DisplayPort AUX, PCIe clock, I2C, UART, and debug.
9 GND power_in Primary ground connection that must be connected to system ground.
10 SBU2 bidirectional Must be DC coupled to the Type-C receptacle SBU2 pin; failsafe I/O with an internal nominal 1.6 MΩ pull-down.
11 SBU1 bidirectional Must be DC coupled to the Type-C receptacle SBU1 pin; failsafe I/O with an internal nominal 1.6 MΩ pull-down.
12 I2C_EN input 3-level input that selects pin-configuration mode (L, tied to GND or floating), I2C mode with ADDR0 (M, tied to VCC/2), or I2C mode with ADDR1 (H, tied to VCC); it has an internal weak pull-down.
13 LnCn bidirectional Single-ended I/O or negative-polarity differential partner to LnCp for generic signals such as DisplayPort AUX, PCIe clock, I2C, UART, and debug.
14 LnCp bidirectional Single-ended I/O or positive-polarity differential partner to LnCn for generic signals such as DisplayPort AUX, PCIe clock, I2C, UART, and debug.
15 LnAn bidirectional Single-ended I/O or negative-polarity differential partner to LnAp; preferred for DisplayPort AUX and also usable for PCIe clock, I2C, UART, and debug.
16 LnAp bidirectional Single-ended I/O or positive-polarity differential partner to LnAn; preferred for DisplayPort AUX and also usable for PCIe clock, I2C, UART, and debug.

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package UQFN-16(1.8x2.6)
Category Communication Interface Chip/UART/485/232
Pins 16

CAD (KiCad official)

  • Symbol: TS3USBCA420RSVR
  • Footprint: Package_DFN_QFN:UQFN-16_1.8x2.6mm_P0.4mm
  • 3D model: UQFN-16(1.8x2.6), generated from the KiCad footprint (body from the F.Fab outline, terminals on the pads, 0.55 mm nominal UFQFPN height). Neither the vendor nor KiCad ships a 3D model for this package, so the dimensions are nominal, not the manufacturer's CAD (STEP)
  • 3D model files: ts3usbca420rsvr-etched.step / ts3usbca420rsvr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ts3usbca420rsvr.step / ts3usbca420rsvr.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: Texas Instruments datasheet (45 pp, sha256 28ce8be13d774aa3, retrieved 2026-10-08, tier: lcsc)
  • Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-5-5 (text), consensus claude-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).

Datasheet PDF