component
TUSB2551ARGTR
Public Made by Adomby adom
Texas Instruments USB Converters, VQFN-16-EP(3x3). 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
markdownTUSB2551ARGTR
Texas Instruments · USB Converters · VQFN-16-EP(3x3)
TUSB2551ARGTR from Texas Instruments, in a VQFN-16-EP(3x3). 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 | SPEED | input | Edge-rate control input; logic HIGH for full-speed (12-Mbit/s) operation, logic LOW for low-speed (1.5-Mbit/s) operation. |
| 2 | RCV | output | Receive data output for USB differential data. |
| 3 | VP | bidirectional | Differential transceiver line; receiver output (+) when OE = 1, driver input (+) when OE = 0. |
| 4 | VM | bidirectional | Differential transceiver line; receiver output (-) when OE = 1, driver input (-) when OE = 0. |
| 5 | SOFTCON | input | Soft connect input; controls VPU(3.3) output state. |
| 6 | GND | power_in | Ground reference. |
| 7 | SUSPEND | input | Suspend input, active high; turns off internal circuits to reduce supply current. |
| 8 | NC | unconnected | No internal connection. |
| 9 | OE | input | Output enable input, active low; enables transceiver to transmit data onto bus, placed in receive mode when inactive. |
| 10 | D- | bidirectional | Differential data line (-) conforming to USB standard. |
| 11 | D+ | bidirectional | Differential data line (+) conforming to USB standard. |
| 12 | Vreg(3.3) | power_out | 3.3-V reference supply output; requires minimum 0.1-µF decoupling capacitor for stability, 1-µF capacitor recommended. |
| 13 | VPU(3.3) | power_out | Pullup supply voltage output; used to connect 1.5-kΩ pullup speed detect resistor; outputs 3.3 V when SOFTCON = 0, high impedance when SOFTCON = 1. |
| 14 | VCC(5.0) | power_in | USB bus supply voltage input; supplies power to USB transceiver and internal circuitry. |
| 15 | VCC(I/O) | power_in | System interface supply voltage input; provides reference voltage for system I/O interface signaling. |
| 16 | NC | unconnected | No internal connection. |
| 17 | GND | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | VQFN-16-EP(3x3) |
| Category | Interface |
| Pins | 17 |
CAD (KiCad official)
- Symbol:
TUSB2551ARGTR - Footprint:
Package_DFN_QFN:QFN-16-1EP_3x3mm_P0.5mm_EP1.7x1.7mm - 3D model: VQFN-16-EP(3x3) (KiCad packages3D, STEP)
- 3D model files:
tusb2551argtr-etched.step/tusb2551argtr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);tusb2551argtr.step/tusb2551argtr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (19 pp, sha256
4d4951865a074c70, retrieved 2026-10-03, tier: manufacturer) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-4-5-20251001(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).