BOB-15439,每个工程师和业余爱好者的办公桌上都应该有几块必备板,这款 PCA9306 双路双向电压
电平转换器分线器就是其中之一。由于不同的部件有时使用不同的电压
电平进行通信,因此电压电平转换器可能是使不同部件正常工作的关键。 PCA9306 是一款双向 I2C
总线和 SMBus 电压电平转换器,可在 1.2V 至 3.3V 的低侧和 1.8V 至 5.5V 的高侧工作。只需将低侧和高侧参考电压分别施加到 VREF1 和 VREF2,连接 I/O 并将启用引脚驱动为高电平即可打开双向电压转换,而无需使用方向引脚。我们更新了这款经典板,使用新的封装,并添加第二个接地引脚并断开启用引脚
说明
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BOB-15439, There are a couple must-have boards that every engineer and hobbyist should have on their desk, and this PCA9306 dual, bidirectional voltage-level translator breakout is one of them. Because different parts sometimes use different voltage levels to communicate, voltage level translators can be the key to making different parts play nice. The PCA9306 is a dual bidirectional I2C-bus and SMBus voltage-level translator that's operational on the low side from 1.2V to 3.3V and on the high side from 1.8V to 5.5V. Simply apply your low and high-side reference voltages to the VREF1 and VREF2 respectively, connect your I/O and drive the Enable pin high to open bidirectional voltage translation without the use of a direction pin. We've updated this classic board to use a new footprint as well as adding a second ground pin and breaking out the enable pin