Maker project
Adafruit PCF8574 I2C GPIO Expander
BOM003785 · V1.0
What the project is · as the catalogue files it; the circuit functions below are BOM rule hits
Filed under “接口转换及调试器” in the ezPLM catalogue.
Circuit functions included · BOM rule hits · not reviewed
- Real-time clock (RTC)
- IC1 PCF8574RGY · by part number
- I/O expander / shift-register expansion
- IC1 PCF8574RGY · by part number
Helper circuits
- Qwiic / STEMMA QT / Grove
- CONN3, CONN4 STEMMA_I2C_QT · by part number
Online view
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14 rows · 20 parts0 of 14 rows placedHover or click a row to mark its parts in the view; click a part in the view to find its row.
Looks up part numbers and makers at ezPLM, DigiKey and Mouser. What it finds are suggestions: check one before you use it.
| Designators | Value | Part | Qty | ||
|---|---|---|---|---|---|
| C1 | 0.1uFC_0603_1608Metric | No part number | 1 | ||
| C3 | 10uFC_0805_2012Metric | No part number | 1 | ||
| R1, R3 | 10KR_Array_Concave_4x0603 | No part number | 2 | ||
| D1 | GREENLED_0603_1608Metric | No part number | 1 | ||
| CONN3, CONN4 | STEMMA_I2C_QTJST_SH_SM04B-SRSS-TB_1x04-1MP_P1.00mm_Horizontal | No part number | 2 | ||
| FID3, FID4 | FIDUCIAL_1MMFIDUCIAL_1MM | No part number | 2 | ||
| IC1 | PCF8574RGYPCF8574RGY | No part number | 1 | ||
| JP1 | —1X06_ROUND_70 | No part number | 1 | ||
| JP3 | —1X10_ROUND70 | No part number | 1 | ||
| SJ1, SJ2, SJ3 | —SOLDERJUMPER_ARROW_NOPASTE | No part number | 3 | ||
| SJ4 | —SOLDERJUMPER_CLOSEDWIRE | No part number | 1 | ||
| U$9 | —SYMBOL_MINUS | No part number | 1 | ||
| U$11 | —SYMBOL_PLUS | No part number | 1 | ||
| U$19, U$21 | MOUNTINGHOLE2.5MOUNTINGHOLE_2.5_PLATED | No part number | 2 |