MIC2550BML

Manufacturer Part NumberMIC2550BML
ManufacturerMicrel Inc
MIC2550BML datasheet
 


Specifications of MIC2550BML

Number Of Transceivers1Esd ProtectionYeskV
Operating Supply Voltage (typ)Not RequiredVOperating Temperature ClassificationIndustrial
Operating Supply Voltage (max)Not RequiredVOperating Supply Voltage (min)Not RequiredV
Pin Count16MountingSurface Mount
Operating Temperature (max)85COperating Temperature (min)-40C
Lead Free Status / RoHS StatusNot Compliant  
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MIC2550
General Description
The MIC2550 is a single-chip transceiver that complies with
the physical layer specifications for Universal Serial Bus
(USB).
The MIC2550 supports full-speed (12Mbps) dual supply
voltage operation (patent pending) and low-speed (1.5Mbps)
operation.
A unique dual supply voltage operation allows the MIC2550
to reference the system I/F I/O signals to a supply voltage
down to 2.5V while independently powered by the USB V
This allows the system interface to operate at its core voltage
without addition of buffering logic and also reduce system
operating current.
System Diagram
System
Supply Voltage
0.47µF
System
Interface
GND
MicroLeadFrame and MLF are trademarks of Amkor Technology.
SurgX is a registered trademark of Cooper Electronics Technologies.
Micrel, Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
March 2005
Universal Serial Bus Transceiver
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
.
BUS
Applications
• Personal digital assistants (PDA)
• Palmtop computers
• Cellular telephones
Ordering Information
Part Number
Standard
MIC2550BTS
MIC2550BML
1.5k
MIC2550
VIF
VTRM
LOW
SPEED
SPD
VBUS
R
S
OE#
D+
24Ω
RCV
D–
R
S
VP
D–
24Ω
VM
1µF
SUS
GND
1µF min
10µF max
1
Micrel, Inc.
MIC2550
Pb-Free
Package
MIC2550YTS
14-Pin TSSOP
MIC2550YML
16-Pin MLF™
HIGH
SPEED
V
BUS
D+
USB
Interface
D–
Connector
GND
41206ESDA SurgX
(See “Applications Information”
for additional suppliers.)
M9999-031805

MIC2550BML Summary of contents

  • Page 1

    ... Small 14-pin TSSOP and 16-pin MLF™ packages . BUS Applications • Personal digital assistants (PDA) • Palmtop computers • Cellular telephones Ordering Information Part Number Standard MIC2550BTS MIC2550BML 1.5k MIC2550 VIF VTRM LOW SPEED SPD VBUS R S OE# D+ 24Ω ...

  • Page 2

    ... MIC2550 Pin Configuration VIF 1 SPD 2 RCV GND 7 14-Pin TSSOP (TM) Pin Description Pin Name Pin Number Pin Number MIC2550BTS MIC2550BML VIF 1 SPD 2 RCV GND 7 SUS 8 OE# 9 D– VTRM 12 VBUS 14 M9999-031805 14 VBUS VTRM D– 9 OE# 8 SUS Pin Function 15 System Interface Supply Voltage (Input): Determines logic voltage levels for system interface signaling to logic controller ...

  • Page 3

    MIC2550 Absolute Maximum Ratings Supply Voltage (V ) ................................................... +6.5V IF Input Voltage (V ) ........................ –0.5V(min)/5.5V(max) BUS Output Current ( ........................................... ±50mA D+ D– Output Current (all others) ....................................... ±15mA Input Current ............................................................ ±50mA Power Dissipation ...

  • Page 4

    MIC2550 Symbol Parameter Transceiver DC Characteristics I Hi-Z State Data Line Leakage LO V Differential Input Sensitivity DI V Differential Common-Mode Range CM V Single-Ended Receiver Threshold SE Receiver Hysteresis, Note 6 V Static Output Low, Note ...

  • Page 5

    MIC2550 Timing Diagrams Differential Data Lines Differential Data Lines Output Figure 3. Receiver Propagation Delay D+/D– to RCV, V Input Differential Data Lines Figure 4. Driver Propagation Delay V March 2005 PVZ ...

  • Page 6

    MIC2550 ...

  • Page 7

    MIC2550 Block Diagram March 2005 SYSTEM I/F USB VOLTAGE DOMAIN VOLTAGE DOMAIN Regulator VIF TO INTERNAL CIRCUITS SPD OE# RCV VP VM SUS GND 7 Micrel, Inc. VBUS VTRM D– D+ M9999-031805 ...

  • Page 8

    MIC2550 Applications Information The MIC2550 is designed to provide USB connectivity in mobile systems where system supply voltages are not avail- able to satisfy USB requirements. The MIC2550 can operate down to supply voltages of 2.5V and still meet USB ...

  • Page 9

    MIC2550 PCB Layout Recommendations Although the USB standard and applications are not based in an impedance controlled environment, a properly designed PCB layout is recommended for optimal transceiver perfor- mance. The suggested PCB layout hints are as follows: • Match ...

  • Page 10

    MIC2550 Package Information 0.65 BSC (0.026) 3.00BSC 2.75BSC 0.50 DIA 2.75BSC 3 4 TOP VIEW SECTION "C-C" SCALE: NONE 0.5BSC FOR EVEN TERMINAL/SIDE M9999-031805 4.50 (0.177) 6.4 BSC (0.252) 4.30 (0.169) 0.30 ...

  • Page 11

    ... MIC2550 MICREL INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 USA + 1 (408) 944-0800 TEL This information furnished by Micrel in this data sheet is believed to be accurate and reliable. However no responsibility is assumed by Micrel for its use. Micrel reserves the right to change circuitry and specifications at any time without notification to the customer. ...