Hi-Speed USB-to-SD Card Readers with Bypass

General Description The MAX14500–MAX14503 USB-to-SD™ card readers provide a means for portable devices that support full speed USB communication (12Mbps) with one or two SD card slots, upgrading the USB SD card reader function to USB Hi-Speed (480Mbps) operation. The MAX14500–MAX14503 have two

高速USB至SD读卡器，提供旁路控制

MAX14500–MAX14503 USB至SD™读卡器为带有一个或两个SD卡槽且支持全速USB通信(12Mbps)的便携式设备提供了一种升级方法，可以将USB SD读卡器升级到USB高速(480Mbps)工作模式。MAX14500–MAX14503具有两种工作模式：直通和读卡器。直通模式下，SD和USB信号不作任何改动直接通过MAX14500–MAX14503，器件处于完全透明状态。从主机微处理器角度看没有任何变动，因此主机微处理器的固件无需进行任何修改。在读卡器模式下，MAX14500–MAX14503作为一个高速USB读卡器独立工作，与主机微处理器无关。器件保留了全速USB端口和SD卡槽 \n• 兼容USB 2.0高速和全速模式 \n• 支持SDHC卡 \n• 内部高速USB SD读卡器减轻了µP的负荷 \n• 片上端接和上拉电阻 \n• 支持的时钟输入频率 \n• 26MHz、19.2MHz、13MHz和12MHz \n• 内部时钟方波电路，允许采用低幅度TCXO信号 \n• 无需电源排序 \n• 兼容+1.8V至+3.3V I/O主机微处理器 \n• 简单的控制模式，只需单个GPIO \n• 为两个SD卡提供所需的I²C控制 \n• 片上上电复位/欠压复位;

Hi-Speed USB-to-SD Card Readers with Bypass

General Description The MAX14500–MAX14503 USB-to-SD™ card readers provide a means for portable devices that support full speed USB communication (12Mbps) with one or two SD card slots, upgrading the USB SD card reader function to USB Hi-Speed (480Mbps) operation. The MAX14500–MAX14503 have two

Hi-Speed USB-to-SD Card Readers with Bypass

General Description The MAX14500–MAX14503 USB-to-SD™ card readers provide a means for portable devices that support full speed USB communication (12Mbps) with one or two SD card slots, upgrading the USB SD card reader function to USB Hi-Speed (480Mbps) operation. The MAX14500–MAX14503 have two

Hex Non-Inverting 3-State Buffer

The MC14503B is a hex non−inverting buffer with 3−state outputs, and a high current source and sink capability. The 3−state outputs make it useful in common bussing applications. Two disable controls are provided. A high level on the Disable A input causes the outputs of buffers 1 through 4 to go

Hex Non-Inverting 3-State Buffer

The MC14503B is a hex non−inverting buffer with 3−state outputs, and a high current source and sink capability. The 3−state outputs make it useful in common bussing applications. Two disable controls are provided. A high level on the Disable A input causes the outputs of buffers 1 through 4 to go

Hex Non-Inverting 3-State Buffer

The MC14503B is a hex non−inverting buffer with 3−state outputs, and a high current source and sink capability. The 3−state outputs make it useful in common bussing applications. Two disable controls are provided. A high level on the Disable A input causes the outputs of buffers 1 through 4 to go

Hex Non-Inverting 3-State Buffer

The MC14503B is a hex non−inverting buffer with 3−state outputs, and a high current source and sink capability. The 3−state outputs make it useful in common bussing applications. Two disable controls are provided. A high level on the Disable A input causes the outputs of buffers 1 through 4 to go

Hex Non-Inverting 3-State Buffer

The MC14503B is a hex non−inverting buffer with 3−state outputs, and a high current source and sink capability. The 3−state outputs make it useful in common bussing applications. Two disable controls are provided. A high level on the Disable A input causes the outputs of buffers 1 through 4 to go