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TUSB2046BIRHBTG4
Public Made by Adomby adom
Texas Instruments USB Converters, VQFN-32(5x5). 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
markdownTUSB2046BIRHBTG4
Texas Instruments · USB Converters · VQFN-32(5x5)
TUSB2046BIRHBTG4 from Texas Instruments, in a VQFN-32(5x5). 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 | DP0 | bidirectional | Root port USB differential data plus; DP0 paired with DM0 forms the upstream USB port. |
| 2 | DM0 | bidirectional | Root port USB differential data minus; DM0 paired with DP0 forms the upstream USB port. |
| 3 | VCC | power_in | 3.3-V supply voltage; recommended range is 3.3 V to 3.6 V for TUSB2046BI/TUSB2046I (3 V to 3.6 V for TUSB2046B). |
| 4 | RESET | input | Active-low TTL input with hysteresis that must be asserted at power-up; a 100 µs to 1 ms reset pulse is recommended after VCC reaches 90%, and the clock must be active during the last 60 µs of the reset window. |
| 5 | EECLK | tri_state | EEPROM serial clock 3-state output with a 100-µA internal pulldown when EXTMEM is low; when EXTMEM is high the terminal is disabled and must be left unconnected. |
| 6 | EEDATA/GANGED | bidirectional | When EXTMEM is high it selects ganged or per-port overcurrent detection; when EXTMEM is low it is the EEPROM serial data I/O with a 100-µA internal pulldown, and as a standard TTL input it must not change dynamically during operation. |
| 7 | GND | power_in | Ground terminal that must be tied to ground for proper operation. |
| 8 | BUSPWR | input | Active-high power source indicator that must be pulled to 3.3 V for bus-powered mode or pulled low for self-powered mode, and must not change dynamically during operation. |
| 9 | PWRON1 | output | Active-low push-pull power-on/off control for downstream port 1; external power switches must accept 3.3-V inputs because the output cannot drive 5-V signals. |
| 10 | OVRCUR1 | input | Active-low overcurrent input with noise filtering for downstream port 1; in ganged mode all OVRCUR terminals must be tied together. |
| 11 | DM1 | bidirectional | Downstream port 1 USB differential data minus, paired with DP1. |
| 12 | DP1 | bidirectional | Downstream port 1 USB differential data plus, paired with DM1. |
| 13 | PWRON2 | output | Active-low push-pull power-on/off control for downstream port 2; external power switches must accept 3.3-V inputs because the output cannot drive 5-V signals. |
| 14 | OVRCUR2 | input | Active-low overcurrent input with noise filtering for downstream port 2; in ganged mode all OVRCUR terminals must be tied together. |
| 15 | DM2 | bidirectional | Downstream port 2 USB differential data minus, paired with DP2. |
| 16 | DP2 | bidirectional | Downstream port 2 USB differential data plus, paired with DM2. |
| 17 | PWRON3 | output | Active-low push-pull power-on/off control for downstream port 3; external power switches must accept 3.3-V inputs because the output cannot drive 5-V signals. |
| 18 | OVRCUR3 | input | Active-low overcurrent input with noise filtering for downstream port 3; in ganged mode all OVRCUR terminals must be tied together. |
| 19 | DM3 | bidirectional | Downstream port 3 USB differential data minus, paired with DP3. |
| 20 | DP3 | bidirectional | Downstream port 3 USB differential data plus, paired with DM3. |
| 21 | PWRON4 | output | Active-low push-pull power-on/off control for downstream port 4; external power switches must accept 3.3-V inputs because the output cannot drive 5-V signals. |
| 22 | OVRCUR4 | input | Active-low overcurrent input with noise filtering for downstream port 4; in ganged mode all OVRCUR terminals must be tied together. |
| 23 | DM4 | bidirectional | Downstream port 4 USB differential data minus, paired with DP4. |
| 24 | DP4 | bidirectional | Downstream port 4 USB differential data plus, paired with DM4. |
| 25 | VCC | power_in | 3.3-V supply voltage; recommended range is 3.3 V to 3.6 V for TUSB2046BI/TUSB2046I (3 V to 3.6 V for TUSB2046B). |
| 26 | EXTMEM | input | When high, the serial EEPROM interface is disabled; when low, pins 5 and 6 become the EEPROM clock and data terminals. |
| 27 | TSTPLL/48MCLK | bidirectional | Test terminal that must be tied to ground for normal 6-MHz operation; for 48-MHz operation a 48-MHz clock source (no crystal) can be connected to this input. |
| 28 | GND | power_in | Ground terminal that must be tied to ground for proper operation. |
| 29 | XTAL2 | output | 6-MHz crystal output that must be left open when an oscillator drives XTAL1. |
| 30 | XTAL1 | input | 6-MHz crystal or oscillator input with 50% duty cycle, from which the internal PLL generates the 48-MHz and 12-MHz clocks; an oscillator TTL output must not exceed 3.6 V. |
| 31 | TSTMODE | input | Test/mode terminal that must be tied to ground for normal 6-MHz operation or to 3.3-V VCC for 48-MHz operation. |
| 32 | SUSPND | output | Active-high suspend status output that is high during suspend mode and low during normal operation. |
| 33 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | VQFN-32(5x5) |
| Category | Interface |
| Pins | 33 |
CAD (KiCad official)
- Symbol:
TUSB2046BIRHBTG4 - Footprint:
Package_DFN_QFN:QFN-32-1EP_5x5mm_P0.5mm_EP3.3x3.3mm - 3D model: VQFN-32(5x5) (KiCad packages3D, STEP)
- 3D model files:
tusb2046birhbtg4-etched.step/tusb2046birhbtg4-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);tusb2046birhbtg4.step/tusb2046birhbtg4.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (32 pp, sha256
706c3aa2802a6f58, retrieved 2026-10-08, tier: lcsc) - 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).