ETC PACUSB

PACUSB-U1/U2/U3
Upstream USB Port Terminator
Features
Product Description
•
The PACUSB-U1, PACUSB-U2, and PACUSB-U3 are
single-channel USB upstream-port termination networks.
•
•
•
One upstream USB port terminator, EMI filter and
transient overvoltage protector in a single surfacemount package
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
ESD protection to 15kV contact discharge per
IEC 61000-4-2 international standard
Applications
•
•
•
•
•
•
•
The PACUSB-U1/U2/U3 integrate EMI/RFI filter components 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 V3.3 (R2).
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
This series resistance plus the USB driver output resistance must be close to the USB cable’s characteristic
impedance of 45Ω (90Ω balanced) to minimize transmission 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 protection for sensitive electronic components that may be
subjected to electrostatic discharge (ESD). The input
and output pins are designed and characterized to dissipate ESD strikes of 15kV safely, a level well beyond
the maximum requirements of the IEC 61000-4-2 international standard.
Using the MIL-STD-883D (Method 3015) specification
for Human Body Model (HBM) ESD, all pins are protected for contact discharges to greater than 30kV.
Electrical Schematic
D1_i
IN1
R1
1
D1_c1
OUT
R2
C1
GND
GND
6
2
5
V3.3
Vcc
C1
D2_i
IN2
3
R1
4
D2_c2
OUT
© 2003 California Micro Devices Corp. All rights reserved.
11/17/03
430 N. McCarthy Blvd., Milpitas, CA 95035-5112 ▲ Tel: 408.263.3214
C0160997D
▲ Fax: 408.263.7846
▲
www.calmicro.com
1
PACUSB-U1/U2/U3
PACKAGE / PINOUT DIAGRAMS
GND
2
D2_i
3
6
D1_c
D1_i
1
5
V3.3
GND
2
4
D2_c
D2_i
3
6-pin SC70
UUxY
1
UUx
D1_i
6
D1_c
5
V3.3
4
D2_c
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
GND
The ground reference for the PACUSB-U1/U2/U3 device.
3
D2_i
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
V3.3
The 3.3V supply voltage for the PACUSB-U1/U2/U3 device.
6
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
R1 Value (Ω)
PACUSB-U1
12
PACUSB-U2
33
PACUSB-U3
22
© 2003 California Micro Devices Corp. All rights reserved.
2
430 N. McCarthy Blvd., Milpitas, CA 95035-5112 ▲ Tel: 408.263.3214
▲ Fax: 408.263.7846
▲
www.calmicro.com
11/17/03
PACUSB-U1/U2/U3
Ordering Information (continued)
PART NUMBERING INFORMATION
Package
Ordering Part Number1
R1 Value (Ω)
Pins
Part Marking
12
6
SC70-6
PACUSBU1
UU1
12
6
SOT23-6
PACUSBU1Y6
UU1Y
33
6
SC70-6
PACUSBU2
UU2
33
6
SOT23-6
PACUSBU2Y6
UU2Y
22
6
SC70-6
PACUSBU3
UU3
22
6
SOT23-6
PACUSBU3Y6
UU3Y
Note 1: Parts are shipped in Tape & Reel form unless otherwise specified.
Specifications
ABSOLUTE MAXIMUM RATINGS
PARAMETER
RATING
UNITS
5.5
V
Operating Temperature Range
-40 to +85
°C
Storage Temperature Range
-65 to +150
°C
DC Power to Resistor
100
mW
Package Power
200
mW
RATING
UNITS
3.3
V
-40 to +85
°C
V3.3 (Supply Voltage)
STANDARD OPERATING CONDITIONS
PARAMETER
V3.3 (Supply Voltage)
Ambient Operating Temperature
© 2003 California Micro Devices Corp. All rights reserved.
11/17/03
430 N. McCarthy Blvd., Milpitas, CA 95035-5112
▲ Tel: 408.263.3214
▲
Fax: 408.263.7846
▲
www.calmicro.com
3
PACUSB-U1/U2/U3
Specifications (continued)
ELECTRICAL OPERATING CHARACTERISTICS
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
R1
Resistance R1 (PACUSB-U1 only)
R1
Resistance R1 (PACUSB-U2 only)
Measured at 25°C
10
12
14
Ω
Measured at 25°C
26
33
40
Ω
R1
Resistance R1 (PACUSB-U3 only)
Measured at 25°C
18
22
26
Ω
R2
Resistance R2
Measured at 25°C
1.2
1.5
1.8
kΩ
38
47
56
pF
1
100
nA
C1
Capacitance C1
Measured at 1 MHz, 2.5VDC, 25°C
ILEAK
Diode Leakage
At 3.3VDC and 25°C
VD1
Diode Reverse-biased Stand-off
Voltage
I = 10µA, 25°C
5.5
VD2
Signal Clamp Voltage
Positive Clamp
Negative Clamp
@ 10mA, 25°C
@ 10mA, 25°C
5.6
-1.2
Human Body Model, MIL-STD-883,
Method 3015
Notes 1,2
+30
kV
IEC 61000-4-2, contact discharge
method (I/O pins)
Notes 1,2
+15
kV
IEC 61000-4-2, contact discharge
method (V3.3 pin)
Notes 1,2
+25
kV
VESD
VCLAMP
V
6.8
-0.8
8.0
-0.4
V
V
In-system ESD Withstand Voltage
Clamping Voltage during ESD
Discharge
Positive
Negative
MIL-STD-883, Method 3015, 8kV;
Notes 1,2
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 ▲ Tel: 408.263.3214
▲ Fax: 408.263.7846
▲
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-.
The USB Specification revision 1.1 provides for two
data rates:
• The Full Speed signaling bit rate at 12 Mbits per
second, and
• 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.
Connections for Full Speed Operation
Full Speed devices have the pull-up resistor (R2) connected to the D+ data line, as shown in Figure 1. Pin1
is tied to the D+ line of the USB controller. Pin 6 is connected to D+ line on the USB connector.
Connections for Low Speed Operation
Low Speed devices have the pull-up resistor (R2) connected 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 connected to the D- line on the USB connector.
PACUSB-Ux
D+
IN1
R1
1
D1_i
6
R2
C1
D+
OUT 1
D1_c
3.3V
USB
CONTROLLER
GND
2
GND
5
USB
CONNECTOR
Vcc
V3.3
C1
GND
D-
IN2
R1
3
D2_i
4
D-
OUT 2
D2_c
SC70-6
Figure 1. Full Speed Connection
PACUSB-Ux
D-
IN1
R1
1
D1_i
6
R2
C1
OUT 1
D-
D1_c
3.3V
USB
CONTROLLER
GND
5
2
GND
USB
CONNECTOR
Vcc
V3.3
C1
GND
D+
IN2
R1
3
D2_i
4
OUT 2
D+
D2_c
SC70-6
Figure 2. Low Speed Connection
© 2003 California Micro Devices Corp. All rights reserved.
11/17/03
430 N. McCarthy Blvd., Milpitas, CA 95035-5112
▲ Tel: 408.263.3214
▲
Fax: 408.263.7846
▲
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.
For complete information on the SC70 package, see
the California Micro Devices SC70 Package Information document.
e
6
e
5
4
UUx
Pin 1
Marking
1
2
E1 E
3
B
PACKAGE DIMENSIONS
Package
MO-203 Issue A
Pins
6
Dimensions
D
Millimeters
Min
Max
A
0.80
1.10
A1
0.00
0.10
A2
0.70
1.00
B
0.15
0.30
c
0.08
0.25
D
1.85
2.25
E
1.15
1.35
e
A2 A
A1
END VIEW
c
0.65 BSC
HE
2.00
2.40
L
0.26
0.46
# per
tape and reel
SIDE VIEW
L
3000 pcs
Package Dimensions for SC70-6.
© 2003 California Micro Devices Corp. All rights reserved.
6
430 N. McCarthy Blvd., Milpitas, CA 95035-5112 ▲ Tel: 408.263.3214
▲ Fax: 408.263.7846
▲
www.calmicro.com
11/17/03
PACUSB-U1/U2/U3
Mechanical Details (continued)
SOT23 Mechanical Specifications
Dimensions for PACUSB-U1/U2/U3 devices packaged
in SOT23-6 packages are presented below.
Mechanical Package Diagrams
For complete information on the SOT23 package, see
the California Micro Devices SOT23 Package Information document.
TOP VIEW
e1
e
6
Pin 1
Marking
PACKAGE DIMENSIONS
Package
MO-178
Pins
6
Dimensions
4
UUxY
1
2
E1 E
3
b
Millimeters
Inches
Min
Max
Min
Max
A
--
1.45
--
0.057
A1
0.00
0.15
0.000
0.006
b
0.30
0.50
0.012
0.020
c
0.08
0.22
0.003
0.009
D
2.75
3.05
0.108
0.120
E
2.60
3.00
0.102
0.118
E1
1.45
1.75
0.057
0.069
e
0.95 BSC
0.0374 BSC
e1
1.90 BSC
0.0748 BSC
L
0.60 REF
0.0236 REF
# per tape
and reel
5
SIDE VIEW
D
A
A1
END VIEW
c
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
▲ Tel: 408.263.3214
▲
Fax: 408.263.7846
▲
www.calmicro.com
7