PACUSB-U1/U2/U3 [ETC]
Upstream USB Port Terminator ; 上游USB端口终结者\n
| 型号： | PACUSB-U1/U2/U3 |
| 厂家： | 
ETC |
| 描述： | Upstream USB Port Terminator
|
| 文件： | 总7页 (文件大小：94K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
PACUSB-U1/U2/U3
Upstream USB Port Terminator
Features
Product Description
•
One upstream USB port terminator, EMI filter and
transient overvoltage protector in a single surface-
mount package
The PACUSB-U1, PACUSB-U2, and PACUSB-U3 are
single-channel USB upstream-port termination net-
works.
•
Compact SC70 or SOT23 package saves board
space and lowers manufacturing costs compared
to discrete solutions
ESD protection to 30kV contact discharge per
MIL-STD-883D, method 3015
The PACUSB-U1/U2/U3 integrate EMI/RFI filter com-
ponents R1 and C1, as recommended by the USB
specification. Because these are upstream USB
devices, they are terminated with a single 1.5kΩ pull-up
•
•
resistor to V (R2).
3.3
ESD protection to 15kV contact discharge per
IEC 61000-4-2 international standard
There are three options for the value of the series
resistor R1:
•
•
•
For PACUSB-U1, R1=12Ω
For PACUSB-U2, R1=33Ω
For PACUSB-U3, R1=22Ω
Applications
This series resistance plus the USB driver output resis-
tance must be close to the USB cable’s characteristic
impedance of 45Ω (90Ω balanced) to minimize trans-
mission line reflections.
•
•
ESD protection and termination of USB port
All USB peripherals (PC printers, scanners,
zip drives, etc.)
PDAs / handheld PCs
Digital cameras
Wireless Handets
MP3 Players
Cable Modems
•
•
•
•
•
In addition, these parts provide a very high level of pro-
tection for sensitive electronic components that may be
subjected to electrostatic discharge (ESD). The input
and output pins are designed and characterized to dis-
sipate ESD strikes of 15kV safely, a level well beyond
the maximum requirements of the IEC 61000-4-2 inter-
national standard.
Using the MIL-STD-883D (Method 3015) specification
for Human Body Model (HBM) ESD, all pins are pro-
tected for contact discharges to greater than 30kV.
1
R1
6
Electrical Schematic
D1_c
D1_i
R2
C1
C1
2
3
5
GND
V
3.3
R1
4
D2_c
D2_i
© 2003 California Micro Devices Corp. All rights reserved.
C0160997D
11/17/03 430 N. McCarthy Blvd., Milpitas, CA 95035-5112
L
Tel: 408.263.3214
L
Fax: 408.263.7846
L
www.calmicro.com
1
PACUSB-U1/U2/U3
PACKAGE / PINOUT DIAGRAMS
D1_i
GND
D2_i
1
2
3
6
5
4
D1_c
V3.3
D1_i
GND
D2_i
1
2
3
6
5
4
D1_c
V3.3
D2_c
D2_c
6-pin SC70
6-pin SOT23
Note: Drawings are not to scale.
PIN DESCRIPTIONS
PIN
NAME
DESCRIPTION
1
D1_i
The USB Controller side of the D+ or D- bidirectional transmission line of the differential
pair defined by USB standards.
2
3
GND
D2_i
The ground reference for the PACUSB-U1/U2/U3 device.
The USB Controller side of the D- or D+ bidirectional transmission line of the differential
pair defined by USB standards.
4
D2_c
The connector side of the D- or D+ bidirectional transmission line of the differential pair
defined by USB standards.
5
6
V
The 3.3V supply voltage for the PACUSB-U1/U2/U3 device.
3.3
D1_c
The connector side of the D+ or D- bidirectional transmission line of the differential pair
defined by USB standards.
Ordering Information
STANDARD VALUES
Part Designator
PACUSB-U1
R1 Value (Ω)
12
33
22
PACUSB-U2
PACUSB-U3
© 2003 California Micro Devices Corp. All rights reserved.
2
430 N. McCarthy Blvd., Milpitas, CA 95035-5112
L
Tel: 408.263.3214
L
Fax: 408.263.7846
L
www.calmicro.com
11/17/03
PACUSB-U1/U2/U3
Ordering Information (continued)
PART NUMBERING INFORMATION
1
R1 Value (Ω)
Pins
Package
Part Marking
Ordering Part Number
PACUSBU1
12
12
33
33
22
22
6
6
6
6
6
6
SC70-6
SOT23-6
SC70-6
UU1
UU1Y
UU2
PACUSBU1Y6
PACUSBU2
SOT23-6
SC70-6
PACUSBU2Y6
PACUSBU3
UU2Y
UU3
SOT23-6
PACUSBU3Y6
UU3Y
Note 1: Parts are shipped in Tape & Reel form unless otherwise specified.
Specifications
ABSOLUTE MAXIMUM RATINGS
PARAMETER
RATING
UNITS
V
(Supply Voltage)
5.5
V
3.3
Operating Temperature Range
Storage Temperature Range
DC Power to Resistor
-40 to +85
-65 to +150
100
°C
°C
mW
mW
Package Power
200
STANDARD OPERATING CONDITIONS
PARAMETER
RATING
UNITS
V
(Supply Voltage)
3.3
V
3.3
Ambient Operating Temperature
-40 to +85
°C
© 2003 California Micro Devices Corp. All rights reserved.
11/17/03 430 N. McCarthy Blvd., Milpitas, CA 95035-5112 L Tel: 408.263.3214
L
Fax: 408.263.7846
L
www.calmicro.com
3
PACUSB-U1/U2/U3
Specifications (continued)
ELECTRICAL OPERATING CHARACTERISTICS
SYMBOL PARAMETER
CONDITIONS
MIN
10
TYP
12
33
22
1.5
47
1
MAX UNITS
R1
R1
R1
R2
C1
Resistance R1 (PACUSB-U1 only)
Measured at 25°C
14
40
Ω
Ω
Resistance R1 (PACUSB-U2 only)
Resistance R1 (PACUSB-U3 only)
Resistance R2
Measured at 25°C
26
Measured at 25°C
18
26
Ω
Measured at 25°C
1.2
38
1.8
56
kΩ
pF
nA
Capacitance C1
Measured at 1 MHz, 2.5VDC, 25°C
At 3.3VDC and 25°C
I
Diode Leakage
100
LEAK
V
Diode Reverse-biased Stand-off
Voltage
I = 10µA, 25°C
5.5
V
D1
V
Signal Clamp Voltage
Positive Clamp
D2
@ 10mA, 25°C
@ 10mA, 25°C
5.6
-1.2
6.8
-0.8
8.0
-0.4
V
V
Negative Clamp
V
In-system ESD Withstand Voltage
ESD
Human Body Model, MIL-STD-883, Notes 1,2
Method 3015
+30
+15
+25
kV
kV
kV
IEC 61000-4-2, contact discharge
method (I/O pins)
Notes 1,2
Notes 1,2
IEC 61000-4-2, contact discharge
method (V pin)
3.3
V
Clamping Voltage during ESD
Discharge
MIL-STD-883, Method 3015, 8kV;
Notes 1,2
CLAMP
Positive
Negative
10
-5
V
V
Note 1: ESD applied to input/output/V3.3 pins with respect to GND, one at a time. Clamping voltage is measured at the opposite side
of the EMI filter to the ESD pin (i.e., if ESD is applied to pin 1, then clamping voltage is measured at pin 6). Unused pins are
open.
Note 2: These parameters guaranteed by design.
© 2003 California Micro Devices Corp. All rights reserved.
4
430 N. McCarthy Blvd., Milpitas, CA 95035-5112
L
Tel: 408.263.3214
L
Fax: 408.263.7846
L
www.calmicro.com
11/17/03
PACUSB-U1/U2/U3
Application Information
The PACUSB-U1/U2/U3 is targeted for upstream USB
ports (peripherals). It provides series termination, EMI
filtering, and ESD protection for the two USB data lines
D+ and D-.
Connections for Full Speed Operation
Full Speed devices have the pull-up resistor (R2) con-
nected to the D+ data line, as shown in Figure 1. Pin1
is tied to the D+ line of the USB controller. Pin 6 is con-
nected to D+ line on the USB connector.
The USB Specification revision 1.1 provides for two
data rates:
•
The Full Speed signaling bit rate at 12 Mbits per
second, and
Connections for Low Speed Operation
Low Speed devices have the pull-up resistor (R2) con-
nected to the D- data line, as shown in Figure 2. Pin 1
is tied to the D- line of the USB controller; pin 6 is con-
nected to the D- line on the USB connector.
•
The Low Speed signaling bit rate at 1.5 Mbits per
second.
The speed is selected by connecting one of the data
lines (D+ or D-) through the 1.5kΩ pull-up resistor (R2)
to a 3.3V supply voltage.
PACUSB-Ux
1
R1
6
D+
D+
D1_i
D1_c
R2
C1
C1
3.3V
2
5
USB
USB
CONTROLLER
CONNECTOR
GND
V
3.3
GND
3
R1
4
D-
D-
D2_i
D2_c
Figure 1. Full Speed Connection
PACUSB-Ux
1
R1
6
D-
D-
D1_i
D1_c
R2
C1
C1
3.3V
2
5
USB
USB
CONNECTOR
CONTROLLER
GND
V
3.3
GND
D+
3
R1
4
D+
D2_i
D2_c
Figure 2. Low Speed Connection
© 2003 California Micro Devices Corp. All rights reserved.
11/17/03 430 N. McCarthy Blvd., Milpitas, CA 95035-5112 L Tel: 408.263.3214
L
Fax: 408.263.7846
L
www.calmicro.com
5
PACUSB-U1/U2/U3
Mechanical Details
PACUSB-U1/U2/U3 devices are packaged in 6-pin
SC70 and 6-pin SOT23 packages.
Mechanical Package Diagrams
SC70 Mechanical Specifications
TOP VIEW
Dimensions for PACUSB-U1/U2/U3 devices packaged
in SC70-6 packages are presented below.
e
e
6
5
4
3
For complete information on the SC70 package, see
the California Micro Devices SC70 Package Informa-
tion document.
Pin 1
Marking
E1 E
UUx
1
2
B
PACKAGE DIMENSIONS
Package
Pins
MO-203 Issue A
6
SIDE VIEW
D
Millimeters
Dimensions
Min
Max
1.10
0.10
1.00
0.30
0.25
2.25
1.35
A2 A
A1
A
A1
A2
B
0.80
0.00
0.70
0.15
0.08
1.85
1.15
END VIEW
c
D
E
c
e
0.65 BSC
3000 pcs
HE
L
2.00
0.26
2.40
0.46
L
# per
tape and reel
Package Dimensions for SC70-6.
© 2003 California Micro Devices Corp. All rights reserved.
6
430 N. McCarthy Blvd., Milpitas, CA 95035-5112
L
Tel: 408.263.3214
L
Fax: 408.263.7846
L
www.calmicro.com
11/17/03
PACUSB-U1/U2/U3
Mechanical Details (continued)
SOT23 Mechanical Specifications
Mechanical Package Diagrams
Dimensions for PACUSB-U1/U2/U3 devices packaged
in SOT23-6 packages are presented below.
TOP VIEW
For complete information on the SOT23 package, see
the California Micro Devices SOT23 Package Informa-
tion document.
e1
e
6
1
5
4
3
Pin 1
Marking
E1
E
UUxY
PACKAGE DIMENSIONS
2
Package
Pins
MO-178
6
b
Millimeters
Min Max
Inches
Max
Dimensions
SIDE VIEW
D
Min
--
A
A1
b
--
1.45
0.15
0.50
0.22
3.05
3.00
1.75
0.057
0.006
0.020
0.009
0.120
0.118
0.069
0.00
0.30
0.08
2.75
2.60
1.45
0.000
0.012
0.003
0.108
0.102
0.057
A
c
D
E
A1
E1
e
END VIEW
0.95 BSC
0.0374 BSC
e1
L
1.90 BSC
0.60 REF
0.0748 BSC
0.0236 REF
c
# per tape
and reel
3000 pcs
L1
L
Controlling dimension: inches
Package Dimensions for SOT23-6.
© 2003 California Micro Devices Corp. All rights reserved.
11/17/03 430 N. McCarthy Blvd., Milpitas, CA 95035-5112 L Tel: 408.263.3214
L
Fax: 408.263.7846
L
www.calmicro.com
7
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