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MIC2551 Datasheet(PDF) 1 Page - Micrel Semiconductor |
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MIC2551 Datasheet(HTML) 1 Page - Micrel Semiconductor |
1 / 11 page May 2004 1 M9999-051004 MIC2551A Micrel MIC2551A USB Transceiver General Description The MIC2551A is a single chip transceiver that complies with the physical layer specifications of the Universal Serial Bus (USB) 2.0. It supports both full speed (12Mbps) and low speed (1.5Mbps) operation and introduces superior edge rate control, producing crisper eye diagrams, which ease the task of passing USB compliance testing. A unique, patented, dual supply voltage operation allows the MIC2551A to reference the system I/F I/O signals to a supply voltage down to 1.6V while independently powered by the USB V BUS. This allows the system interface to operate at its core voltage without addition of buffering logic and also reduce system operating current. Typical Application System Supply Voltage USB SIE Controller VIF OE# RCV VP VM D– D+ VBUS VTRM GND D– D+ USB Port 41206ESDA SurgX GND GPIO MIC2551A SPD 1.0 µF (min) 10 µF (max) (See “Applications Information” for additional suppliers.) VCC SUS VPU RS 20 Ω/±1% RS 20 Ω/±1% VBUS 1.5k 1 µF CON Typical Application Circuit Features • Compliant to USB Specification Revision 2.0 for full speed (12Mbs) and low speed (1.5Mbps) operation • Compliant to IEC-61000-4.2 (Level 3) • Separate I/O supply with operation down to 1.6V • Integrated speed select termination supply • Very-low power consumption to meet USB suspend- current requirements • Small TSSOP and MLF™ packages • No power supply sequencing requirements • Software controlled re-enumeration Applications • PDAs • Palmtops • Cell phones Ordering Information Part Number Package MIC2551ABTS 14-Pin TSSOP MIC2551ABML 16-Pin MLF™ Micrel, Inc. • 1849 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com MicroLeadFrame and MLF are trademarks of Amkor Technology. SurgX is a registered trademark of Cooper Electronics Technologies. |
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