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IO Expander Daughterboard

STDIO Expander Daughterboard

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CC-BY-NC-SA 3.0

Creation time:2020-04-13 00:00:45Update time:2021-10-24 06:28:13

Description

Mic2981/Passthrough daughterboard for the Raspberry Pi IO Expander (https://easyeda.com/MadOverlord/rbp-io-expander)

Rev 2.0 adds optional pulldown resistor arrays on underside of board.

Design Drawing

schematic diagram
PCB

BOM

IDNameDesignatorFootprintQuantity
1MIC2981-THMIC1DIP-18_NO1
2SOLDERJUMPERNOSJ7,SJ2,SJ3,SJ4,SJ5,SJ6,SJ1,SJ8SJ_2S-NO8
3TXS0108E DAUGHTERBOARDTSX-A-8TXS0108E DAUGHTERBOARD1
44.7KRN1,RN2,RN3,RN4RES-ARRAY-SMD_0603-8P-L3.2-W1.6-BL-REV4

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