说明：  TM1914是单线三通道LED恒流驱动专用电路，可通过双通道数字接口（DIN、FDIN）互相切换输入， 与DO口级联，外部控制器只需单线即可对芯片进行控制。芯片内部集成有MCU单线双通道数字接口、数 据锁存器、LED恒流驱动、PWM辉度控制等电路。VDD引脚内部集成5V稳压管，外围器件少。适用于护栏 管、点光源等LED装饰类产品。本产品性能优良，质量可靠。
(TM1914 is a single three-channel constant current LED driver dedicated circuit, you can switch the input to each other through the dual-channel digital interface (DIN, FDIN), And DO cascade port, an external controller can be only one-line control of the chip. An on-chip MCU single two-channel digital interface, the number of It latches, LED constant current driver, PWM brightness control circuit. VDD pin integrated 5V regulator, less peripheral devices. Suitable for fence Tube, LED spot light and other decorative products. This product is excellent performance, reliable quality.)