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https://e2e.ti.com/support/logic-group/logic/f/logic-forum/1297116/sn74lvth244a-exposed-pad-rgy-package
是 RGY 封装的外露焊盘(引脚21)、仅用于机械支持还是必须将其连接到 GND。 数据表中未明确说明这一点。
悬空或 GND；请参阅 [PDF]如何将逻辑 QFN 器件的散热焊盘连接到哪里？
