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TUSB8044ARGCR

Texas Instruments · USB Converters · VQFN-64-EP(9x9)

TUSB8044ARGCR from Texas Instruments, in a VQFN-64-EP(9x9). 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 USB_DP_DN1 bidirectional USB high-speed differential transceiver (positive) for downstream port 1.
2 USB_DM_DN1 bidirectional USB high-speed differential transceiver (negative) for downstream port 1.
3 USB_SSTXP_DN1 output USB SuperSpeed transmitter differential pair (positive) for downstream port 1.
4 USB_SSTXM_DN1 output USB SuperSpeed transmitter differential pair (negative) for downstream port 1.
5 VDD power_in 1.1-V power rail; recommended 0.99 V to 1.26 V, absolute maximum 1.4 V.
6 USB_SSRXP_DN1 input USB SuperSpeed receiver differential pair (positive) for downstream port 1.
7 USB_SSRXM_DN1 input USB SuperSpeed receiver differential pair (negative) for downstream port 1.
8 VDD power_in 1.1-V power rail; recommended 0.99 V to 1.26 V, absolute maximum 1.4 V.
9 USB_DP_DN2 bidirectional USB high-speed differential transceiver (positive) for downstream port 2.
10 USB_DM_DN2 bidirectional USB high-speed differential transceiver (negative) for downstream port 2.
11 USB_SSTXP_DN2 output USB SuperSpeed transmitter differential pair (positive) for downstream port 2.
12 USB_SSTXM_DN2 output USB SuperSpeed transmitter differential pair (negative) for downstream port 2.
13 VDD power_in 1.1-V power rail; recommended 0.99 V to 1.26 V, absolute maximum 1.4 V.
14 USB_SSRXP_DN2 input USB SuperSpeed receiver differential pair (positive) for downstream port 2.
15 USB_SSRXM_DN2 input USB SuperSpeed receiver differential pair (negative) for downstream port 2.
16 VDD33 power_in 3.3-V power rail; recommended 3.0 V to 3.6 V, absolute maximum 3.8 V.
17 USB_DP_DN3 bidirectional USB high-speed differential transceiver (positive) for downstream port 3.
18 USB_DM_DN3 bidirectional USB high-speed differential transceiver (negative) for downstream port 3.
19 USB_SSTXP_DN3 output USB SuperSpeed transmitter differential pair (positive) for downstream port 3.
20 USB_SSTXM_DN3 output USB SuperSpeed transmitter differential pair (negative) for downstream port 3.
21 VDD power_in 1.1-V power rail; recommended 0.99 V to 1.26 V, absolute maximum 1.4 V.
22 USB_SSRXP_DN3 input USB SuperSpeed receiver differential pair (positive) for downstream port 3.
23 USB_SSRXM_DN3 input USB SuperSpeed receiver differential pair (negative) for downstream port 3.
24 USB_DP_DN4 bidirectional USB high-speed differential transceiver (positive) for downstream port 4.
25 USB_DM_DN4 bidirectional USB high-speed differential transceiver (negative) for downstream port 4.
26 USB_SSTXP_DN4 output USB SuperSpeed transmitter differential pair (positive) for downstream port 4.
27 USB_SSTXM_DN4 output USB SuperSpeed transmitter differential pair (negative) for downstream port 4.
28 VDD power_in 1.1-V power rail; recommended 0.99 V to 1.26 V, absolute maximum 1.4 V.
29 USB_SSRXP_DN4 input USB SuperSpeed receiver differential pair (positive) for downstream port 4.
30 USB_SSRXM_DN4 input USB SuperSpeed receiver differential pair (negative) for downstream port 4.
31 VDD power_in 1.1-V power rail; recommended 0.99 V to 1.26 V, absolute maximum 1.4 V.
32 PWRCTL4/BATEN4 bidirectional Port 4 power-on control for the downstream power switch and battery charging enable; the level sampled at reset de-assertion sets battery charging support (0 = not supported, 1 = supported), internal pull-down, may be left unconnected if power management is not implemented.
33 PWRCTL3/BATEN3 bidirectional Port 3 power-on control for the downstream power switch and battery charging enable; the level sampled at reset de-assertion sets battery charging support (0 = not supported, 1 = supported), internal pull-down, may be left unconnected if power management is not implemented.
34 VDD33 power_in 3.3-V power rail; recommended 3.0 V to 3.6 V, absolute maximum 3.8 V.
35 PWRCTL2/BATEN2 bidirectional Port 2 power-on control for the downstream power switch and battery charging enable; the level sampled at reset de-assertion sets battery charging support (0 = not supported, 1 = supported), internal pull-down, may be left unconnected if power management is not implemented.
36 PWRCTL1/BATEN1 bidirectional Port 1 power-on control for the downstream power switch and battery charging enable; the level sampled at reset de-assertion sets battery charging support (0 = not supported, 1 = supported), internal pull-down, may be left unconnected if power management is not implemented.
37 SDA/SMBDAT bidirectional I2C data (when SMBUSz = 1, serial data for an I2C EEPROM) or SMBus data (when SMBUSz = 0, for an SMBus host); internal pull-down, can be left unconnected if the external interface is not implemented.
38 SCL/SMBCLK bidirectional I2C clock (when SMBUSz = 1, serial clock for an I2C EEPROM) or SMBus clock (when SMBUSz = 0, for an SMBus host); internal pull-down, can be left unconnected if the external interface is not implemented.
39 SMBUSz,SS_SUSPEND bidirectional Sampled at reset de-assertion to select I2C mode (1) or SMBus mode (0); after reset, indicates SuperSpeed upstream suspend status (1 = suspended) when enabled through stsOutputEn; internal pull-up, can be left unconnected if the external interface is not implemented.
40 BBbmConfigured0/FULLAUTOz/FULLPWRMGMTz/SS_UP bidirectional In I2C mode, sets bmConfigured[0] of the Billboard Capability descriptor together with pin 45; in SMBus mode, sampled or used for FullAutoEn/power switch control, or as SS_UP upstream SuperSpeed connection indicator when stsOutputEn is set (1 = SuperSpeed upstream connected); internal pull-down.
41 PWRCTL_POL bidirectional Sampled at reset de-assertion to set the polarity of PWRCTL[4:1] (0 = active low, 1 = active high); internal pull-up.
42 BBEN/GANGED,HS_UP bidirectional In I2C mode, Billboard enable (high presents the billboard to the host); in SMBus mode, sampled at reset to select individual (0) or ganged (1) port power control, or as HS_UP upstream high-speed connection indicator when stsOutputEn is set; internal pull-down.
43 OVERCUR4z input Port 4 over-current detection input from the downstream power switch (0 = over-current has occurred, 1 = no over-current); internal pull-up, may be left unconnected when another OVERCURz pin is used in ganged mode.
44 OVERCUR3z input Port 3 over-current detection input from the downstream power switch (0 = over-current has occurred, 1 = no over-current); internal pull-up, may be left unconnected when another OVERCURz pin is used in ganged mode.
45 BBbmConfigured1/AUTOENz/HS_SUSPEND bidirectional In I2C mode, sets bmConfigured[1] of the Billboard Capability descriptor together with pin 40; in SMBus mode, sampled to set autoEnz in the Battery Charging Support register, or as HS_SUSPEND upstream high-speed suspend indicator when stsOutputEn is set (1 = suspended); internal pull-down.
46 OVERCUR1z input Port 1 over-current detection input from the downstream power switch (0 = over-current has occurred, 1 = no over-current); internal pull-up, may be left unconnected when another OVERCURz pin is used in ganged mode.
47 OVERCUR2z input Port 2 over-current detection input from the downstream power switch (0 = over-current has occurred, 1 = no over-current); internal pull-up, may be left unconnected when another OVERCURz pin is used in ganged mode.
48 USB_VBUS input Upstream port VBUS detection input, which requires a voltage divider: connect to VBUS through 90.9 kΩ ±1% and to ground through 10 kΩ ±1%; voltage range 0 to 1.155 V at this terminal.
49 TEST input Reserved for factory test; requires an external pull-down resistor to ground on the PCB (10 kΩ or stronger recommended) for normal operation.
50 GRSTz input Global power reset; asserting it returns all internal registers to default states and the device is completely nonfunctional while asserted; internal pull-up.
51 VDD power_in 1.1-V power rail; recommended 0.99 V to 1.26 V, absolute maximum 1.4 V.
52 VDD33 power_in 3.3-V power rail; recommended 3.0 V to 3.6 V, absolute maximum 3.8 V.
53 USB_DP_UP bidirectional USB high-speed differential transceiver (positive) for the upstream port.
54 USB_DM_UP bidirectional USB high-speed differential transceiver (negative) for the upstream port.
55 USB_SSTXP_UP output USB SuperSpeed transmitter differential pair (positive) for the upstream port.
56 USB_SSTXM_UP output USB SuperSpeed transmitter differential pair (negative) for the upstream port.
57 VDD power_in 1.1-V power rail; recommended 0.99 V to 1.26 V, absolute maximum 1.4 V.
58 USB_SSRXP_UP input USB SuperSpeed receiver differential pair (positive) for the upstream port.
59 USB_SSRXM_UP input USB SuperSpeed receiver differential pair (negative) for the upstream port.
60 NC unconnected No connect; leave floating.
61 XO output Crystal output of the internal oscillator; may be left unconnected if XI is driven by an external oscillator, and a 1-MΩ feedback resistor is required between XI and XO when using a crystal.
62 XI input Crystal input for the internal oscillator, which may alternately be driven by an external oscillator; a 1-MΩ feedback resistor is required between XI and XO when using a crystal.
63 VDD33 power_in 3.3-V power rail; recommended 3.0 V to 3.6 V, absolute maximum 3.8 V.
64 USB_R1 input Precision resistor reference; a 9.53 kΩ ±1% resistor should be connected between USB_R1 and GND.
65 EP passive Exposed pad (from the footprint; not named in the datasheet pin table).

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package VQFN-64-EP(9x9)
Category Interface
Pins 65

CAD (KiCad official)

  • Symbol: TUSB8044ARGCR
  • Footprint: Package_DFN_QFN:QFN-64-1EP_9x9mm_P0.5mm_EP6x6mm
  • 3D model: VQFN-64-EP(9x9) (KiCad packages3D, STEP)
  • 3D model files: tusb8044argcr-etched.step / tusb8044argcr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); tusb8044argcr.step / tusb8044argcr.glb are the bare package body.

Provenance

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

  • Datasheet: Texas Instruments datasheet (69 pp, sha256 57142228db173b28, 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