component
PCA9554ARGTR
Public Made by Adomby adom
Texas Instruments I/O Expanders, QFN-16-EP(3x3). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
Open in new tab ↗
Loads on click. Unloads only if this page sits in the background.
Symbol & Footprint
Schematic Symbol
Open full view ↗Loads on click. Unloads only if this page sits in the background.
PCB Footprint
Open full view ↗Loads on click. Unloads only if this page sits in the background.
Datasheet
Open in new tab ↗Loads on click. Unloads only if this page sits in the background.
README
markdownPCA9554ARGTR
Texas Instruments · I/O Expanders · QFN-16-EP(3x3)
PCA9554ARGTR from Texas Instruments, in a QFN-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 | A2 | input | Address input; connect directly to VCC or ground. |
| 2 | P0 | bidirectional | P-port input/output; push-pull design structure. |
| 3 | P1 | bidirectional | P-port input/output; push-pull design structure. |
| 4 | P2 | bidirectional | P-port input/output; push-pull design structure. |
| 5 | P3 | bidirectional | P-port input/output; push-pull design structure. |
| 6 | GND | power_in | Ground. |
| 7 | P4 | bidirectional | P-port input/output; push-pull design structure. |
| 8 | P5 | bidirectional | P-port input/output; push-pull design structure. |
| 9 | P6 | bidirectional | P-port input/output; push-pull design structure. |
| 10 | P7 | bidirectional | P-port input/output; push-pull design structure. |
| 11 | INT | tri_state | Interrupt output (open-drain); connect to VCC through a pullup resistor. |
| 12 | SCL | bidirectional | Serial clock bus; connect to VCC through a pullup resistor. |
| 13 | SDA | bidirectional | Serial data bus; connect to VCC through a pullup resistor. |
| 14 | VCC | power_in | Supply voltage. |
| 15 | A0 | input | Address input; connect directly to VCC or ground. |
| 16 | A1 | input | Address input; connect directly to VCC or ground. |
| 17 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | QFN-16-EP(3x3) |
| Category | Interface |
| Pins | 17 |
CAD (KiCad official)
- Symbol:
PCA9554ARGTR - Footprint:
Package_DFN_QFN:QFN-16-1EP_3x3mm_P0.5mm_EP1.7x1.7mm - 3D model: QFN-16-EP(3x3) (KiCad packages3D, STEP)
- 3D model files:
pca9554argtr-etched.step/pca9554argtr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);pca9554argtr.step/pca9554argtr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (42 pp, sha256
73abe48bc529881d, retrieved 2026-09-27, tier: manufacturer) - Extractor: parts-factory
2.0.0/extract_pins 0.2, primaryclaude-haiku-4-5-20251001(text), consensusclaude-sonnet-4-6(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).