7 端口多功能 USB HUB 控制器芯片

CH339是符合USB2.0协议规范的7端口多功能USB HUB控制器芯片，单芯片集成7口USB HUB、USB百兆以太网、USB高速SD读卡器、USB PD和USB转SPI、USB转JTAG、USB转UART、USB转I2C接口等功能。CH339上行端口支持USB2.0高速和全速，下行端口支持USB2.0高速480Mbps、全速12Mbps和低速1.5Mbps，另有USB网卡、USB高速读卡器、USB转JTAG等多个内部直达通道。CH339支持高性能的并发处理MTT模式，采用工业级设计，外围精简，可应用于计算机和工控机主板、扩展坞、外设、嵌入式系统等场景。 USB HUB部分\n• 7口USB集线器，提供7个USB2.0下行端口，向下兼容USB1.1协议规范\n• 支持各端口独立电源控制或GANG整体联动电源控制\n• 支持各端口独立过流检测或GANG整体过流\n• 支持高性能的MTT模式，为每个端口提供立TT实现满带宽并发传输，总带宽是STT的7倍\n• 自研的专用USB PHY，低功耗技术，支持自供电或总线供电\n• 可通过I/O引脚配置自供电或总线供电模式等功能\n• 提供晶体振荡器，支持外部时钟输入，内置PLL为USB PHY提供480MHz时钟\n• 非以太网应用场合可支持免晶振模式，节省外置晶体及电容\n• 上行端口内置1.5KΩ上拉;

WCH

沁恒微电子

LOW POWER QUAD VOLTAGE COMPARATORS

文件：629.35 Kbytes 页数：7 Pages

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LOW POWER QUAD VOLTAGE COMPARATORS

GENERAL DESCRIPTION This device consists of four independent precision voltage comparators with an offset voltage specification as low as 2mV max for CM339. All these comparators were designed specifically to operate from a single power supply over a wide range of voltages. Operation from spl

文件：156.35 Kbytes 页数：6 Pages

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未分类制造商

LOW POWER QUAD VOLTAGE COMPARATORS

GENERAL DESCRIPTION This device consists of four independent precision voltage comparators with an offset voltage specification as low as 2mV max for CM339. All these comparators were designed specifically to operate from a single power supply over a wide range of voltages. Operation from spl

文件：156.35 Kbytes 页数：6 Pages

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未分类制造商