| 序号 | 型号 | 描述 | 大小 | 厂家Logo | 下载 |
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| 1 | PCF8574T | Remote 8-bit I/O expander for I2C-bus | 160K |
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| 2 | PCF8574T | Remote 8-bit I/O expander for I2C-bus | 142K |
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| 3 | PCF8574TD | I/O Port | 832K |
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| 4 | PCF8574TDK-T | I/O Port | 832K |
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| 5 | PCF8574TD-T | I/O Port | 832K |
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| 6 | PCF8574TS | Remote 8-bit I/O expander for I2C-bus | 160K |
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| 7 | PCF8574TS | Remote 8-bit I/O expander for I2C-bus | 142K |
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