MIC2550A(2004) View Datasheet(PDF) - Micrel
Part Name
Description
Manufacturer
MIC2550A Datasheet PDF : 11 Pages
| |||
MIC2550A
Micrel
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 con-
trol to produce crisper eye diagrams. As a result, the task of
passing USB compliance testing is made easier.
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 suspend-
current requirements
• Small 14-pin TSSOP and 16-pin MLF™ packages
Applications
• Personal digital assistants (PDA)
• Palmtop computers
• Cellular telephones
Ordering Information
Part Number
MIC2550ABTS
MIC2550ABML
Package
14-Pin TSSOP
16-Pin MLF™
System Diagram
System
Supply Voltage
0.47µF
System
Interface
GND
MIC2550A
VIF VTRM
SPD VBUS
OE# D+
RCV D–
VP
D–
VM
SUS
GND
1.5k
1µF
LOW
SPEED
RS
24Ω
RS
24Ω
1µF min
10µF max
HIGH
SPEED
VBUS
D+
D–
GND
USB
Interface
Connector
Cooper Electronics Technologies
41206ESDA SurgX
(See “Applications Information”
for additional suppliers.)
MicroLeadFrame and MLF are trademarks of Amkor Technology.
SurgX is a registered trademark of Cooper Electronics Technologies.
Micrel, Inc. • 1849 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
May 2004
1
M9999-051004
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