MIC2550A

MIC2550A Micrel, Inc. MIC2550A Universal Serial Bus Transceiver General Description The MIC2550A is a single-chip transceiver that complies with the physical layer specifications for Universal Serial Bus (USB). The MIC2550A supports full-speed (12Mbps) and low-speed (1.5Mbps) operation and introduces superior edge rate control to produce crisper eye diagrams. As a result, the task of passing USB compliance testing is made easier. www.DataSheet4U.com A unique, patented, dual supply voltage operation allows the MIC2550A to reference the system I/F I/O signals to a supply voltage down to 2.5V while independently powered by the USB VBUS. This allows the system interface to operate at its core voltage without addition of buffering logic and also reduce system operating current. Features Compliant to USB Specification Revision 2.0 for low-speed (1.5Mbps) and full-speed (12Mbps) operation Compliant to IEC-61000-4.2 (Level 2) Operation down to 2.5V Dual supply voltage operation Integrated speed-select termination supply Very low power consumption meets USB suspendcurrent requirements Small 14-pin TSSOP and 16-pin MLF™ packages Applications Personal digital assistants (PDA) Palmtop computers Cellular telephones Ordering Information Part Number Standard Pb-Free MIC2550ABTS MIC2550ABML MIC2550AYTS MIC2550AYML Package 14-Pin TSSOP 16-Pin MLF™ System Diagram System Supply Voltage MIC2550A VIF VTRM D+ D– D– 1µF SPD VBUS 1.5k HIGH SPEED LOW SPEED VBUS D+ D– GN...