PACUSB-U1R - California Micro Devices

11/15/04 430 N. McCarthy Blvd., Milpitas, CA 95035-51 12 ●Tel: 408.263.3214 ●Fax: 408.263.7846 ●www.calmicro.com 1

PACUSB-U1/U2/U3

Upstream USB Port Terminator

Features

• One upstream USB port terminator, EMI filter and

transient overvoltage protector in a single surface-

mount 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

• Lead-free version available

Applications

• 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

Product Description

The PACUSB-U1, PACUSB-U2, and PACUSB-U3 are

single-channel USB upstream-port termination net-

works.

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 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 resis-

tance must be close to the USB cable’s characteristic

impedance of 45Ω (90Ω balanced) to minimize trans-

mission line reflections.

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.

The PACUSB-U1/U2/U3 is housed in either a 6-pin

SC70 or 6-pin SOT23 package and is available with

optional lead-free finishing.

Vcc

GND

IN1 OUT 1

OUT 2IN2

D1_c

V3.3

D2_c

GND

D1_i

D2_i

Electrical Schematic

i = input

c = connector

2430 N. McCarthy Blvd., Milpitas, CA 95035-5112 ●Tel: 408.263.3214 ●Fax: 408.263.7846 ●www.calmicro.com 11/15/04

PACUSB-U1/U2/U3

Ordering Information

Note 1: Parts are shipped in Tape & Reel form unless otherwise specified.

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.

3.3 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.

PACKAGE / PINOUT DIAGRAMS

Note: Drawings are not to scale.

6-pin SC70 6-pin SOT23

D1_i

GND

D2_i

D1_c

V3.3

D2_c

D1_i

GND

D2_i

D1_c

V3.3

D2_c

UUx/

UUxY/

UxYR

UxR

PART NUMBERING INFORMATION

R1 Value (Ω)Pins Package

Standard FInish Lead-free Finish

Ordering Part

Number1Part Marking

Ordering Part

Number1Part Marking

12 6 SC70-6 PACUSB-U1 UU1 PACUSB-U1R U1R

12 6 SOT23-6 PACUSB-U1Y6 UU1Y PACUSB-U1Y6R U1YR

33 6 SC70-6 PACUSB-U2 UU2 PACUSB-U2R U2R

33 6 SOT23-6 PACUSB-U2Y6 UU2Y PACUSB-U2Y6R U2YR

22 6 SC70-6 PACUSB-U3 UU3 PACUSB-U3R U3R

22 6 SOT23-6 PACUSB-U3Y6 UU3Y PACUSB-U3Y6R U3YR

11/15/04 430 N. McCarthy Blvd., Milpitas, CA 95035-5112 ●Tel: 408.263.3214 ●Fax: 408.263.7846 ●www.calmicro.com 3

PACUSB-U1/U2/U3

Specifications

ABSOLUTE MAXIMUM RATINGS

PARAMETER RATING UNITS

V3.3 (Supply Voltage) 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

STANDARD OPERATING CONDITIONS

PARAMETER RATING UNITS

V3.3 (Supply Voltage) 3.3 V

Ambient Operating Temperature -40 to +85 °C

4430 N. McCarthy Blvd., Milpitas, CA 95035-5112 ●Tel: 408.263.3214 ●Fax: 408.263.7846 ●www.calmicro.com 11/15/04

PACUSB-U1/U2/U3

Specifications (con’t)

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.

ELECTRICAL OPERATING CHARACTERISTICS

SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS

R1 Resistance R1 (PACUSB-U1 only) Measured at TA = 25°C 10 12 14 Ω

R1 Resistance R1 (PACUSB-U2 only) Measured at TA = 25°C 26 33 40 Ω

R1 Resistance R1 (PACUSB-U3 only) Measured at TA = 25°C 18 22 26 Ω

R2 Resistance R2 Measured at TA = 25°C 1.2 1.5 1.8 kΩ

C1 Capacitance C1 Measured at 1 MHz, 2.5VDC,

TA =25°C

38 47 56 pF

ILEAK Diode Leakage Current to GND At 3.3VDC and TA = 25°C 1 100 nA

VD1 Diode Reverse-biased Stand-off

Voltage

I = 10µA,TA = 25°C 5.5 V

VD2 Signal Clamp Voltage

Positive Clamp

Negative Clamp

@ 10mA, TA = 25°C

5.6

-1.2

6.8

-0.8

8.0

-0.4

VESD In-system ESD Withstand Voltage

Human Body Model, MIL-STD-883,

Method 3015

IEC 61000-4-2, contact discharge

method (I/O pins)

IEC 61000-4-2, contact discharge

method (V3.3 pin)

Notes 1,2

±30

±15

±25

VCLAMP Clamping Voltage during ESD

Discharge

Positive

Negative

MIL-STD-883, Method 3015, 8kV;

Notes 1,2

-5

11/15/04 430 N. McCarthy Blvd., Milpitas, CA 95035-5112 ●Tel: 408.263.3214 ●Fax: 408.263.7846 ●www.calmicro.com 5

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-) to a 3.3V supply voltage via a 1.5kΩ

pull-up resistor (R2).

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.

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.

Figure 1. Full Speed Connection

Figure 2. Low Speed Connection

USB

CONNECTOR

Vcc

SC70-6

GND

IN1 OUT 1

OUT 2IN2

D1_i

GND

D2_i D2_c

D1_c

3.3

USB

CONTROLLER

3.3V

D+

D-

D+

D-

GND

PACUSB-Ux

USB

CONNECTOR

Vcc

SC70-6

GND

IN1 OUT 1

OUT 2IN2

D1_i

GND

D2_i D2_c

D1_c

3.3

USB

CONTROLLER

3.3V

D-

D+

D-

D+

GND

PACUSB-Ux

6430 N. McCarthy Blvd., Milpitas, CA 95035-5112 ●Tel: 408.263.3214 ●Fax: 408.263.7846 ●www.calmicro.com 11/15/04

PACUSB-U1/U2/U3

Mechanical Details

PACUSB-U1/U2/U3 devices are available in 6-pin

SC70 and 6-pin SOT23 packages.

SC70 Mechanical Specifications

Dimensions for the PACUSB-U1/U2/U3 supplied in a

SC70-6 package are presented below.

For complete information on the SC70, see the Califor-

nia Micro Devices SC70 Package Information docu-

ment.

Package Dimensions for SC70-6.

PACKAGE DIMENSIONS

Package MO-203 Issue A

Pins 6

Dimensions Millimeters

Min Max

A0.80 1.10

A1 0.00 0.10

A2 0.70 1.00

B0.15 0.30

c0.08 0.25

D1.85 2.25

E1.15 1.35

e0.65 BSC

HE 2.00 2.40

L0.26 0.46

# per

tape and reel

3000 pcs

Mechanical Package Diagrams

TOP VIEW

12 3

65 4

e e

SIDE VIEW

END VIEW

E1 E

Pin 1

Marking

11/15/04 430 N. McCarthy Blvd., Milpitas, CA 95035-5112 ●Tel: 408.263.3214 ●Fax: 408.263.7846 ●www.calmicro.com 7

PACUSB-U1/U2/U3

Mechanical Details (continued)

SOT23 Mechanical Specifications

Dimensions for the PACUSB-U1/U2/U3 supplied in a

SOT23-6 package are presented below.

For complete information on the SOT23 , see the Cali-

fornia Micro Devices SOT23 Package Information doc-

ument.

Package Dimensions for SOT23-6.

PACKAGE DIMENSIONS

Package MO-178

Pins 6

Dimensions Millimeters Inches

Min Max Min Max

A-- 1.45 -- 0.057

A1 0.00 0.15 0.000 0.006

b0.30 0.50 0.012 0.020

c0.08 0.22 0.003 0.009

D2.75 3.05 0.108 0.120

E2.60 3.00 0.102 0.118

E1 1.45 1.75 0.057 0.069

e0.95 BSC 0.0374 BSC

e1 1.90 BSC 0.0748 BSC

L0.60 REF 0.0236 REF

# per tape

and reel

3000 pcs

Controlling dimension: inches

Mechanical Package Diagrams

TOP VIEW

SIDE VIEW

END VIEW

12 3

65 4

e1 e

E1 E

Pin 1

Marking