MIC2551AYML25-TR
MIC2551AYML25-TR Datasheet
MIC2551A-2.5
| Part | Datasheet |
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MIC2551AYML25-TR |
MIC2551AYML25-TR (pdf) |
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| MIC2551A-2.5 MIC2551A-2.5 USB Transceiver Micrel, Inc. The MIC2551A is a single chip transceiver that complies with the physical layer specifications of the Universal Serial Bus USB It supports both full speed 12Mbps and low speed 1.5Mbps operation and introduces superior edge rate control, producing crisper eye diagrams. This in turn, eases 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 VBUS. This reduces system operating current and allows the system to operate at its core voltage without additional buffering logic. MIC2551A-2.5 is differentiated from MIC2551A by a smaller space saving package 2.5mm x 2.5mm and ±15kV ESD protection which eliminates the need for separate ESD protection devices on the D+, D- data lines. Data sheets and support documentation can be found on Micrel's web site at • ±15kV ESD protection on VBUS, D+ and D• Smaller 2.5mm x 2.5mm package • USB and compliant transceiver full speed - 12Mbs and low speed - 1.5Mbps operation • 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 • No power supply sequencing requirements • Software controlled enumeration • PDAs • Palmtops • Cell phones • PC peripherals Ordering Information Junction Temp. Range Package - Pb Free MIC2551AYML25 -40°C to +85°C 2.5mmx2.5mm V I/O USB Controller MIC2551A Transceiver VIF VTRM CON VPU OE# RCV VBUS SUS GND 1.0µF 10µF VBUS D+ USB Port Typical Application Circuit MicroLeadFrame and MLF are registered trademarks of Amkor Technology. Micrel, Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 408 944-0800 • fax + 1 408 474-1000 • March 2010 M9999-030810 MIC2551A-2.5 Pin Configuration VBUS VIF SPD RCV 1 VP 2 VM 3 CON 4 14 13 12 11 VPU 10 VTRM 9 D+ 8 D- OE# SUS GND 14-Pin ML Micrel, Inc. Pin Description Pin Number 1 2 3 4 Pin Name RCV VP VM CON VTRM VBUS I/O Pin Description O Receive Data Output for USB differential data. I/O If OE# = 1, VP = Receive output + If OE# = 0, VP = Driver input I/O If OE# = 1, VM = Receive output - If OE# = 0, VM = Driver input I CONNECT Input Controls state of VPU. Refer to VPU pin description for detail. Ground Reference. I Suspend Active-High. Turns off internal circuits to reduce supply current. I Output Enable Active-Low. Enables the transceiver to transmit data onto the bus. When inactive, the trasceiver is in the receive mode. I/O Differential data lines conforming to the USB standard. O 3.3V Reference Supply Output Requires a minimum 0.1µF decoupling capacitor for stability. A 1µF capacitor is recommended. O Pull-up Supply Voltage Output Used to connect pull-up speed detect resistor. If CON = 1, VPU is high impedance. If CON = 0, VPU = 3.3V. I USB Bus Supply Voltage Used to power USB transceiver and internal circuitry. I System Interface Supply Voltage Used to provide reference supply voltage for system I/O interface signaling. |
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