PCA9621是一款单片CMOS集成电路，适用于可通过2线总线接口（I²C总线、SMBus、PMBus及其他基于类似原理的系统）进行配置的通用输出驱动。输出端口具有65 mA灌电流能力，使其非常适合驱动LED。
输出状态由可编程8位寄存器决定，可通过来自2线总线（例如，I²C总线或类似总线）的信号读取和写入该寄存器。
2线总线接口还具有30 mA快速模式Plus (Fm+)能力，因此可在超过1 MHz或最大4000 pF电容的条件下运行。因此，可通过长电缆连接将PCA9621连接至其他2线器件。
其可与Fm+ 缓冲器或PCA9646（完全缓冲的4通道总线开关）驱动系统中的其他快速模式Plus从器件混合，以创建具备高速或高电容驱动能力的大型系统，例如大型LED显示或控制灯光。
产品特点 Features
|
应用
|
| 型号 | 可订购的器件编号 | 订购码 (12NC) | 产品状态 | 封装 |
| PCA9621PW | 9352 927 51118 | PCA9621PW,118 | 量产 | TSSOP16 (SOT403-1) |
| 型号 | 订购码 (12NC) | 可订购的器件编号 | 化学成分 |
| PCA9621PW | 9352 927 51118 | PCA9621PW,118 | PCA9621PW |
| 档案名称 | 标题 | 类型 | 格式 |
| PCA9621PW | 65 mA 8-bit 2-wire bus output port | Data sheet | |
| AN10441 | Level shifting techniques in I2C-bus design | Application note | |
| AN255 | I2C / SMBus Repeaters, Hubs and Expanders | Application note | |
| AN10710 | Features and applications of the PCA9621 I2C-bus extender | Application note | |
| 75016527 | Extend standard I2C-bus devices without worrying about offset voltages; NXP I2C-bus extender PCA9621 in a proven application | Brochure | |
| 75016532 | Extend the I2C-bus with advanced repeaters and hubs; NXP 2-channel I2C-bus repeaters PCA9621x and 5-channel I2C-bus hubs PCA9516x | Leaflet | |
| 75016080 | Extend the reach of any I2C-bus system without special offset voltage levels; NXP I2C-bus extender PCA9621 | Leaflet | |
| 75017424 | NXP I2C-bus solutions 2013: Smart, simple solutions for the 12 most common design concerns | Leaflet | |
| UM10204 | I2C-bus specification and user manual | User manual | |
| UM10206 | I2C Demonstration Board 2005-1 Quick Start Guide | User manual | |
| UM10323 | PCA9600 demonstration board OM6293 | User manual |
