MIC2551A MICREL [Micrel Semiconductor], MIC2551A Datasheet

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MIC2551A

Manufacturer Part Number
MIC2551A
Description
USB TRANSCEIVER
Manufacturer
MICREL [Micrel Semiconductor]
Datasheet

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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
core voltage without addition of buffering logic and also
reduce system operating current.
Typical Application
May 2004
Micro
SurgX is a registered trademark of Cooper Electronics Technologies.
MIC2551A
Supply Voltage
LeadFrame and MLF are trademarks of Amkor Technology.
Micrel, Inc. • 1849 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
System
BUS
. This allows the system interface to operate at its
VCC
Controller
USB SIE
GPIO
VIF
CON
OE#
RCV
VP
VM
SPD
SUS
MIC2551A
GND
VTRM
Typical Application Circuit
VBUS
VPU
D+
D–
10 F (max)
1.0 F (min)
20 / 1%
20 / 1%
R
R
S
S
1
Features
• Compliant to USB Specification Revision 2.0 for full
• 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-
• Small TSSOP and MLF™ packages
• No power supply sequencing requirements
• Software controlled re-enumeration
Applications
• PDAs
• Palmtops
• Cell phones
Ordering Information
Part Number
MIC2551ABTS
MIC2551ABML
speed (12Mbs) and low speed (1.5Mbps) operation
current requirements
1.5k
1 F
USB Transceiver
MIC2551A
Package
14-Pin TSSOP
16-Pin MLF™
GND
V
BUS
D+
D–
(See “Applications Information”
for additional suppliers.)
41206ESDA SurgX
USB
Port
M9999-051004
Micrel

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MIC2551A Summary of contents

Page 1

... 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 . This allows the system interface to operate at its ...

Page 2

... MIC2551A Pin Configuration VIF 1 SPD 2 RCV CON 6 GND 7 14-Pin TSSOP Pin Description Pin Number Pin Number Pin Name MIC2551ABTS MIC2551ABML 10/11 10/ 8,16 * See Table 1 for description of logic states. M9999-051004 ...

Page 3

... MIC2551A SUS OE Note 1. During suspend VP and VM are active in order to detect out-of-band signaling conditions. OE Input OE Input Undefined May 2004 D+, D– RCV Driving Active Receiving Active Hi-Z 0 Not active Hi-Z 0 Table 1. Function Selection ...

Page 4

... MIC2551A Absolute Maximum Ratings Supply Voltage (V ) ................................................. 6.5V BUS All Other Inputs ............................................. –0.5V to 5.5V Ambient Storage Temperature ................. – +150 C Output Current (D+, D–) .......................................... 50mA Output Current (all others) ....................................... 15mA Input Current ............................................................ 50mA ESD, Note D+, D– ........................................................ 11KV BUS All other pins .......................................................... 2KV ...

Page 5

... MIC2551A DC Electrical Characteristics (Transceiver) Symbol Parameter Leakage Current I Hi-Z State Data Line Leakage LO (Suspend Mode) Input Levels V Differential Input Sensitivity DI V Differential Common Mode Range CM V Single-Ended Receiver Threshold SE Receiver Hysteresis Output Levels V Static Output Low OL V Static Output High OH Capacitance C Transceiver Capacitance ...

Page 6

... MIC2551A Timing Diagrams OE D+/D– Differential Data Lines D+ D– D– Test Circuits M9999-051004 TRANSMIT t PVZ t t PZD PDZ Figure 1. Enable and Disable Times Rise Time 90% 10 Figure 2. Rise and Fall Times Differential ...

Page 7

... D+ or D– lines to respectively specify high speed low speed operation. IF The use of ESD transient protection devices is not required for operation, but is recommended. The MIC2551A is ESD rated for 11kV at the VBUS and D+, D– pins and 2kV for all other pins. 7 Micrel ...

Page 8

... MIC2551A Power Supply Configuration The MIC2551A can be set up for different power supply configurations which modify the behavior of the device. Both V and V have special thresholds that detect when they BUS IF are either removed or grounded. Table 3 depicts the behavior under the different power supply configuration scenarios that are explained below ...

Page 9

... MIC2551A Configuration Mode VBUS/VTRM Normal Connected Disconnect Open (D+/D– sharing) Disconnect Ground Disable Mode Connected Prohibited Connected 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: • ...

Page 10

... MIC2551A 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 M9999-051004 4.50 (0.177) 6.4 BSC (0.252) 4.30 (0.169) 0.30 (0.012) 0.19 (0.007) 5.10 (0.200) 4.90 (0.193) 1.10 MAX (0.043) 8 0.15 (0.006) 0 0.05 (0.002) 14-lead TSSOP (TS) +0.15 0.85 –0.65 +0.04 0.01 –0.01 +0 ...

Page 11

... MIC2551A MICREL, INC. 1849 FORTUNE DRIVE SAN JOSE, CA 95131 USA + 1 (408) 944-0800 TEL The information furnished by Micrel in this datasheet 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. ...

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