component
PCF8575RGER
Public Made by Adomby adom
Texas Instruments I/O Expanders, VQFN-24-EP(4x4). 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
markdownPCF8575RGER
Texas Instruments · I/O Expanders · VQFN-24-EP(4x4)
PCF8575RGER from Texas Instruments, in a VQFN-24-EP(4x4). 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 | P00 | bidirectional | P-port input/output. Push-pull design structure. |
| 2 | P01 | bidirectional | P-port input/output. Push-pull design structure. |
| 3 | P02 | bidirectional | P-port input/output. Push-pull design structure. |
| 4 | P03 | bidirectional | P-port input/output. Push-pull design structure. |
| 5 | P04 | bidirectional | P-port input/output. Push-pull design structure. |
| 6 | P05 | bidirectional | P-port input/output. Push-pull design structure. |
| 7 | P06 | bidirectional | P-port input/output. Push-pull design structure. |
| 8 | P07 | bidirectional | P-port input/output. Push-pull design structure. |
| 9 | GND | power_in | Ground |
| 10 | P10 | bidirectional | P-port input/output. Push-pull design structure. |
| 11 | P11 | bidirectional | P-port input/output. Push-pull design structure. |
| 12 | P12 | bidirectional | P-port input/output. Push-pull design structure. |
| 13 | P13 | bidirectional | P-port input/output. Push-pull design structure. |
| 14 | P14 | bidirectional | P-port input/output. Push-pull design structure. |
| 15 | P15 | bidirectional | P-port input/output. Push-pull design structure. |
| 16 | P16 | bidirectional | P-port input/output. Push-pull design structure. |
| 17 | P17 | bidirectional | P-port input/output. Push-pull design structure. |
| 18 | A0 | input | Address input 0. Connect directly to VCC or ground. Pull-up resistors are not needed. |
| 19 | SCL | input | Serial clock line. Connect to VCC through a pull-up resistor |
| 20 | SDA | bidirectional | Serial data line. Connect to VCC through a pull-up resistor. |
| 21 | VCC | power_out | Supply voltage |
| 22 | INT | output | Interrupt output. Connect to VCC through a pull-up resistor. |
| 23 | A1 | input | Address input 1. Connect directly to VCC or ground. Pull-up resistors are not needed. |
| 24 | A2 | input | Address input 2. Connect directly to VCC or ground. Pull-up resistors are not needed. |
| 25 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | VQFN-24-EP(4x4) |
| Category | Interface |
| Pins | 25 |
CAD (KiCad official)
- Symbol:
PCF8575RGER - Footprint:
Package_DFN_QFN:QFN-24-1EP_4x4mm_P0.5mm_EP2.6x2.6mm - 3D model: VQFN-24-EP(4x4) (KiCad packages3D, STEP)
- 3D model files:
pcf8575rger-etched.step/pcf8575rger-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);pcf8575rger.step/pcf8575rger.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (44 pp, sha256
259c563b4e0ee0da, retrieved 2026-10-01, 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, 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).