TUSB522PRGER

@@ -0,0 +1,67 @@+# TUSB522PRGER++**Texas Instruments** · Signal Buffers, Repeaters, Splitters · QFN-24-EP(4x4)++TUSB522PRGER from Texas Instruments, in a QFN-24-EP(4x4). Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.++## Pinout++| Pin | Name | Type | Function |+|---|---|---|---|+| 1 | VCC | power_in | Positive power supply, 3.3 V nominal (3.0 V min, 3.6 V max). |+| 2 | EQ1 | input | Channel 1 receiver equalizer gain select. 3-state CMOS input with integrated pull-up/pull-down. Low=3 dB, Mid=6 dB, High=9 dB. |+| 3 | DE2 | input | Channel 2 output de-emphasis select. 3-state CMOS input with integrated pull-up/pull-down. Low=0 dB, Mid=-3.5 dB, High=-6.2 dB. Forced Low when OS=Low. |+| 4 | OS2 | input | Channel 2 output swing (differential voltage amplitude) select. 2-state CMOS input with integrated pull-down. Low=0.9 mV, High=1.1 mV. |+| 5 | EN_RXD | input | Enable input. Device active when EN_RXD=High. Internal 660 kΩ pull-down; drive actively or install ~4.7 kΩ pull-up for normal operation. Resets state machine when Low. |+| 6 | NC | unconnected | No connection. May be tied to any voltage including GND. |+| 7 | NC | unconnected | No connection. May be tied to any voltage including GND. |+| 8 | RX1N | input | Channel 1 differential receiver input, negative (5 Gbps USB 3.1 GEN1). |+| 9 | RX1P | input | Channel 1 differential receiver input, positive (5 Gbps USB 3.1 GEN1). |+| 10 | GND | power_in | Ground. May be connected to GND or left unconnected (thermal PAD is the primary GND connection). |+| 11 | TX2N | output | Channel 2 differential transmitter output, negative (5 Gbps USB 3.1 GEN1). |+| 12 | TX2P | output | Channel 2 differential transmitter output, positive (5 Gbps USB 3.1 GEN1). |+| 13 | VCC | power_in | Positive power supply, 3.3 V nominal (3.0 V min, 3.6 V max). |+| 14 | RSV | input | Reserved. Can be left as no-connect. |+| 15 | OS1 | input | Channel 1 output swing (differential voltage amplitude) select. 2-state CMOS input with integrated pull-down. Low=0.9 mV, High=1.1 mV. |+| 16 | DE1 | input | Channel 1 output de-emphasis select. 3-state CMOS input with integrated pull-up/pull-down. Low=0 dB, Mid=-3.5 dB, High=-6.2 dB. Forced Low when OS=Low. |+| 17 | EQ2 | input | Channel 2 receiver equalizer gain select. 3-state CMOS input with integrated pull-up/pull-down. Low=3 dB, Mid=6 dB, High=9 dB. |+| 18 | NC | unconnected | No connection. May be tied to any voltage including GND. |+| 19 | RX2P | input | Channel 2 differential receiver input, positive (5 Gbps USB 3.1 GEN1). |+| 20 | RX2N | input | Channel 2 differential receiver input, negative (5 Gbps USB 3.1 GEN1). |+| 21 | GND | power_in | Ground. May be connected to GND or left unconnected (thermal PAD is the primary GND connection). |+| 22 | TX1P | output | Channel 1 differential transmitter output, positive (5 Gbps USB 3.1 GEN1). |+| 23 | TX1N | output | Channel 1 differential transmitter output, negative (5 Gbps USB 3.1 GEN1). |+| 24 | NC | unconnected | No connection. May be tied to any voltage including GND. |+| PAD | GND | power_in | Exposed thermal pad on package bottom. Must be soldered to the PCB ground plane for electrical and thermal performance. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Texas Instruments |+| Package | QFN-24-EP(4x4) |+| Category | Interface |+| Pins | 25 |++## Ordering variants++Same part, different packaging or reel option.++- `TUSB522PRGER`+- `TUSB522PRGERRGET`++## CAD (KiCad official)++- Symbol: `TUSB522PRGER`+- Footprint: `Package_DFN_QFN:QFN-24-1EP_4x4mm_P0.5mm_EP2.7x2.7mm`+- 3D model: QFN-24-EP(4x4) (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Texas Instruments datasheet](docs/tusb522prger-datasheet.pdf) (24 pp, sha256 `057e12f6ff5c79f5`, retrieved 2026-08-17, tier: lcsc)+- **Extractor:** `ds2sf` (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.+- **CAD:** KiCad official libraries (CC-BY-SA 4.0).++[Datasheet PDF](docs/tusb522prger-datasheet.pdf)

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