# PCA9555DB (Component) ## Description IO expander 16 GPIO, I2C 400kHz, Interrupt, 2.3 - 5.5V, SSOP-24 I2C TWI IO expander SSOP*5.3x8.2mm*P0.65mm* ## Component Details - **Owner:** kicad-part-library - **Created:** 9/27/2024 - **Last Updated:** 9/27/2024 - **Visibility:** Public - **Manufacturer Name:** NXP Semiconductors NV - **Manufacturer Part Number:** PCA9555DB - **Datasheet URL:** https://www.nxp.com/docs/en/data-sheet/PCA9555.pdf - **Package or Case Code:** SSOP-24_5.3x8.2mm_P0.65mm - **Used in:** 26 projects ## Distributor Pricing (qty 1) *Pricing shown for quantity 1. For price breaks and other quantities, open in Flux.* | Distributor | Unit Price (qty 1) | Stock | |------------|--------------------|-------| | [Digi-Key](https://www.digikey.com/en/products/detail/texas-instruments/PCA9555DB/1576705) | N/A | N/A | | [LCSC](https://www.lcsc.com/product-detail/C1542499.html) | $2.513 | 155 | | [Mouser](https://www.mouser.com/ProductDetail/NXP-Semiconductors/PCA9555DB?qs=fqXUT20n2TqFbA8QGTmjFQ%3D%3D) | N/A | N/A | - **Manufacturer:** NXP - **MPN:** PCA9555DB - **Package / Case Code:** 16-SSOP - **Pin Count:** 24 ## Pins | Pin | Name | Type | |-----|------|------| | 1 | ~{INT} | | | 2 | A1 | | | 3 | A2 | | | 4 | IO0_0 | | | 5 | IO0_1 | | | 6 | IO0_2 | | | 7 | IO0_3 | | | 8 | IO0_4 | | | 9 | IO0_5 | | | 10 | IO0_6 | | | 11 | IO0_7 | | | 12 | VSS | | | 13 | IO1_0 | | | 14 | IO1_1 | | | 15 | IO1_2 | | | 16 | IO1_3 | | | 17 | IO1_4 | | | 18 | IO1_5 | | | 19 | IO1_6 | | | 20 | IO1_7 | | | 21 | A0 | | | 22 | SCL | | | 23 | SDA | | | 24 | VDD | | --- *Generated from [https://www.flux.ai/kicad-part-library/pca9555db~uln](https://www.flux.ai/kicad-part-library/pca9555db~uln)*