MIC2551 Datasheet, PDF (1/10 Pages) Micrel Semiconductor – USB Transceiver

MIC2551
MIC2551
USB Transceiver
Final Information
Micrel
General Description
The MIC2551 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. It is also designed to operate
down to 1.6V in order to be compatible with lower system
voltages of most mobile systems.
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
MIC2551BTS
MIC2551BML
Package
14-Pin TSSOP
16-Pin MLF™
Typical Application
System
Supply Voltage
VCC GPIO
USB SIE
Controller
MIC2551
VIF VTRM
CON VBUS
OE# VPU
RCV
R_S
20Ω/±1%
1.5k
VP
D+
VM
SPD
D–
R_S
20Ω/±1%
SUS
GND
1.0µF (min) 1µF
10µF (max)
Typical Application Circuit
V_BUS
D+
D–
GND
USB
Port
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 [phone] • fax + 1 [phone] • http://www.micrel.com
January 2003
1
MIC2551