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如题，SN74LVC4245A需要5V端需要上拉电阻和反向二极管保护吗？大家都是怎么用的啊？
无需反向二极管，您可以参考手册的Figure 5. Typical Application Schematic。
5V端不需要上拉即可，可直接和5V端的数据位连接。
