TEXAS INSTRUMENTS TUSB2551 Technical data

NC – No internal connection

V

CC(I/O)

V

CC(5.0)

V

PU(3.3)

NC

SPEED

RCV

VP

VM

V

reg(3.3)

D+

D–

OE

NC

SOFTCON

GND

SUSPEND

1

2

3

4

14

16 1315

12

11

10

9

5

6

7

8

GND

(Exposed die pad)

RGT PACKAGE

(BOTTOMVIEW)

PW PACKAGE

(TOP VIEW)

V

CC(I/O)

V

CC(5.0)

V

PU(3.3)

V

reg(3.3)

SPEED

RCV

VP

VM

SOFTCON

GND

D+
D–
OE
SUSPEND

1

2

3

4

5

6

14

13

12

11

10

9

7

8

www.ti.com

1

FEATURES

• Complies With Universal Serial Bus

Specification Rev. 2.0 (USB 2.0)

• Transmits and Receives Serial Data at Both

Full-Speed (12-Mbit/s) and Low-Speed
(1.5-Mbit/s) Data Rates

• Integrated Bypassable 5-V to 3.3-V Voltage

Regulator for Powering Via USB VBUS

• Low-Power Operation, Ideal for Portable

Equipment

• Meets the IEC-61000-4-2 Contact ( ± 9KV) and

Air-gap ( ± 9KV) ESD Ratings

• Separate I/O Supply With Operation Down to

1.65 V

• Very-Low Power Consumption to Meet USB

Suspend Current Requirements

• No Power-Supply Sequencing Requirements

APPLICATIONS

• Cellular Phones

• Personal Digital Assistants (PDAs)

• Handheld Computers

TUSB2551

ADVANCED UNIVERSAL SERIAL BUS TRANSCEIVER

SCES667 – FEBRUARY 2008

ORDERING INFORMATION

PACKAGE

QFN – RGT Reel of 2000 TUSB2551RGTR ZWT
TSSOP – PW Reel of 3000 TUSB2551PWR TU2551

(1) (2)

ORDERABLE PART NUMBER TOP-SIDE MARKING

. This allows the system interface to

CC(5.0)

Copyright © 2008, Texas Instruments Incorporated

DESCRIPTION/ORDERING INFORMATION

The TUSB2551 is a single-chip transceiver that complies with the physical-layer specifications of universal serial
bus (USB) 2.0. The device supports both full-speed (12-Mbit/s) and low-speed (1.5-Mbit/s) operation. The
TUSB2551 delivers superior edge rate control, producing crisper eye diagrams, which ease the task of passing
USB compliance testing.

A dual supply-voltage operation allows the TUSB2551 to reference the system interface I/O signals to a supply
voltage down to 1.6 V, while independently powered by the USB V
operate at its core voltage without the addition of buffering logic, and also reduce system operating current.

T

A

– 40 ° C to 85 ° C

(1) Package drawings, thermal data, and symbolization are available at www.ti.com/packaging .
(2) For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI

1

PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.

website at www.ti.com .

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

www.ti.com

V

CC

(5.0)

V

reg(3.3)

V

PU(3.3)

D+

D–

V

CC

(I/O)

SOFTCON

SPEED

OE

RCV

VP

VM

SUSPEND

GND

LDO

Regulator

ToInternal
Circuitry

Level

Translator

TUSB2551
ADVANCED UNIVERSAL SERIAL BUS TRANSCEIVER

SCES667 – FEBRUARY 2008

BLOCK DIAGRAM

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ADVANCED UNIVERSAL SERIAL BUS TRANSCEIVER

TERMINAL FUNCTIONS

TERMINAL

NAME

V

CC(I/O)

RGT PW

NO. NO.

15 1 I

SPEED 1 2 I
RCV 2 3 O Receive data. Output for USB differential data.
VP 3 4 I/O

VM 4 5 I/O
SOFTCON 5 6 I Soft connect. Controls state of V

GND 6 7 Ground reference
SUSPEND 7 8 I Suspend. Active high. Turns off internal circuits to reduce supply current.
NC 8, 16 No internal connection

OE 9 9 I
D – , D+ 10, 11 10, 11 I/O Differential data lines conforming to the USB standard
V

reg(3.3)

V

PU(3.3)

V

CC(5.0)

12 12 O

13 13 O
14 14 I USB bus supply voltage. Used to power USB transceiver and internal circuitry.

I/O DESCRIPTION

System interface supply voltage. Used to provide reference supply voltage for system I/O
interface signaling.

Speed. Edge-rate control: A logic HIGH operates at edge rates for full-speed operation. A
logic LOW operates at edge rates for low-speed operation.

If OE = 1, VP = Receiver output (+)
If OE = 0, VP = Driver input (+)

If OE = 1, VM = Receiver output ( – )
If OE = 0, VM = Driver input ( – )

. Refer to V

PU(3.3)

PU(3.3)

Output enable. Active low. Enables the transceiver to transmit data onto the bus. When
inactive, the transceiver is in the receive mode.

3.3-V reference supply. Requires a minimum 0.1- µ F decoupling capacitor for stability. A
1- µ F capacitor is recommended.

Pullup supply voltage. Used to connect 1.5-k Ω pullup speed detect resistor. If SOFTCON =
1, V

is high impedance. If SOFTCON = 0, V

PU(3.3)

PU(3.3)

TUSB2551

SCES667 – FEBRUARY 2008

pin description for details.

= 3.3 V.

FUNCTIONAL DESCRIPTION

FUNCTION SELECTION

SUSPEND OE D+, D – RCV VP, VM FUNCTION

0 0 Driving Active Active Normal transmit mode
0 1 Receiving Active Active Normal receive mode
1 0 Hi-Z 0 Not active Low power state
1 1 Hi-Z 0 Active Receiving during suspend (low power state)

(1) During suspend, VP and VM are active in order to detect out-of-band signaling conditions.

TRUTH TABLE DURING NORMAL MODE

OE = 0

INPUT OUTPUT

VP VM D+ D – RCV

0 0 0 0 X
0 1 0 1 0 Logic 0
1 0 1 0 1 Logic 1
1 1 1 1 X

OE = 1

Input Output

D+ D – VP VM RCV

0 0 0 0 X
0 1 0 1 0 Logic 0
1 0 1 0 1 Logic 1
1 1 1 1 X

(1) X = Undefined

(1)

(1)

(1)

(1)

(1)

RESULT

SE0

Undefined

RESULT

SE0

Undefined

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TUSB2551
ADVANCED UNIVERSAL SERIAL BUS TRANSCEIVER

SCES667 – FEBRUARY 2008

Power-Supply Configurations

The TUSB2551 can be used with different power-supply configurations, which can be dynamically changed. An
overview is given in Table 1 .

• Normal mode – Both V
connected to a 5-V source (4 V to 5.5 V). The internal voltage regulator then produces 3.3 V for the USB
connections. For 3.3-V operation, both V
V

is independently connected to a voltage source (1.65 V to 3.6 V), depending on the supply voltage of

CC(I/O)

the external circuit.

• Disable mode – V

CC(I/O)

internal circuits of the TUSB2551 ensure that the D+ and D – pins are in 3-state, and the power consumption
drops to the low-power (suspended) state level. Some hysteresis is built into the detection of V

• Sharing mode – V

CC(I/O)

pins are made 3-state, and the TUSB2551 allows external signals of up to 3.6 V to share the D+ and D –
lines. The internal circuits of the TUSB2551 ensure that virtually no current (maximum 10 mA) is drawn via
the D+ and D – lines. The power consumption through V
Both the VP and VM pins are driven HIGH to indicate this mode. Pin RCV is made LOW. Some hysteresis is
built into the detection of V

Configuration Mode VBUS/VTRM VIF Notes

Normal Connected Connected Normal supply configuration and operation.

Disconnect

(D+/D – sharing)

Disconnect Ground Connected

Disable Mode Connected Open Logic controlled inputs pins are Hi-Z

Prohibited Connected Ground Prohibited condition

and V

CC(I/O)

is not connected; V

is connected; V

lost.

reg(3.3)

or V

CC(5.0)

CC(5.0)

CC(5.0)

CC(5.0)

CC(5.0)

and V

and V

and V

or V

reg(3.3)

Table 1. Power-Supply Configuration Overview

Open Connected driven with

are connected. For 5-V operation, V

reg(3.3)

are connected to a 3.3-V source (3 V to 3.6 V).

reg(3.3)

and V

CC(5.0)

are connected. In this mode, the

reg(3.3)

are not connected. In this mode, the D+ and D –

drops to the low-power (suspended) state level.

CC(I/O)

VP/VM are HIGH outputs, RCV is LOW.
With OE# = 0 and SUSPEND = 1, data lines may be

external devices up to 3.6 V.
With D+, D – floating, I

VP/VM are HIGH outputs, RCV is LOW.
With D+, D – floating, I

draws less than 1 µ A.

CC(I/O)

draws less than 1 µ A.

CC(I/O)F

CC(5.0)

lost.

CC(I/O)

is

Table 2. Pin States in Disable or Sharing Mode

PINS DISABLE-MODE STATE SHARING-MODE STATE

V

/V

CC(5.0)

reg(3.3)

V

CC(I/O)

V

PU(3.3)

D+, D – High impedance High impedance
VP, VM Invalid

RCV Invalid

Inputs (SPEED, SUSPEND, OE, SOFTCON) High impedance High impedance

(1) High impedance or driven LOW

5-V input/3.3-V output, 3.3-V input/3.3-V input Not present

Not present 1.65-V to 3.6-V input

High impedance (off) High impedance (off)

(1)
(1)

H

L

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TUSB2551

ADVANCED UNIVERSAL SERIAL BUS TRANSCEIVER

SCES667 – FEBRUARY 2008

Power-Supply Input Options

The TUSB2551 has two power-supply input options.

• Internal regulator – V
circuitry with 3.3 V (nominal). V

• Regulator bypass – V
and the internal circuitry is supplied directly from the V
3 V to 3.6 V to comply with the USB specification.

The supply-voltage range for each input option is specified in Table 3 .

INPUT OPTION V

Internal regualtor

Regulator bypass maximum voltage drop of 0.3 V

Electrostatic Discharge (ESD)

PIN NAME ESD TYP UNIT

D+, D – , V

All other pins Human-Body Model ± 2 kV

CC(5.0)

is connected to 4 V to 5.5 V. The internal regulator is used to supply the internal

CC(5.0)

and V

CC(5.0)

becomes a 3.3-V output reference.

reg(3.3)

reg(3.3)

are connected to the same supply. The internal regulator is bypassed,

reg(3.3)

power supply. The voltage range is

Table 3. Power-Supply Input Options

CC(5.0)

Supply input for internal regulator Voltage-reference output Supply input for digital I/O pins

(4 V to 5.5 V) (3.3 V, 300 µ A) (1.4 V to 3.6 V)

Connected to V

(2.7 V to 3.6 V)

IEC61000-4-2, Air-Gap Discharge ± 9
IEC61000-4-2, Contact Discharge ± 9 kV
Human-Body Model ± 15

with

reg(3.3)

V

reg(3.3)

Supply input Supply input for digital I/O pins

(3 V to 3.6 V) (1.4 V to 3.6 V)

V

CC(I/O)

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TUSB2551
ADVANCED UNIVERSAL SERIAL BUS TRANSCEIVER

SCES667 – FEBRUARY 2008

ABSOLUTE MAXIMUM RATINGS

(1)

over operating free-air temperature range (unless otherwise noted)

MIN MAX UNIT

V
V
V
V
I
I
I
T

CC(5.0)
CC(I/O)
reg(3.3)

I
O(D+, D-)
O
I

stg

Supply voltage range – 0.5 6 V
I/O supply voltage range – 0.5 4.6 V
Regulated voltage range – 0.5 4.6 V
DC input voltage range – 0.5 V

+ 0.5 mA

CC(I/O)

Output Current (D+, D-) ± 50 mA
Output Current (all others) ± 15 mA
Input Current ± 50 mA
Storage temperature range – 65 150 ° C

(1) Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings

only, and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating
conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

RECOMMENDED OPERATING CONDITIONS

PARAMETER TEST CONDITIONS MIN TYP MAX UNIT

V

CC(5.0)

V

reg(3.3)

V

CC(I/O)

V

IL

V

IH

D+, D – Input voltage on analog I/O pins 0 3.6 V
T

c

(1) Specification applies to the following pins: SUSPEND, SPEED, RCV, SOFTCON, VP, VM, OE

Supply voltage, internal regulator option 5-V operation 4 5 5.25 V
Supply voltage, regulator bypass option 3.3-V operation 3 3.3 3.6 V
I/O supply voltage 1.65 3.6 V
Low-level input voltage
High-level input voltage

(1)

(1)

V

– 0.3 0.15 V

CC(I/O)

0.85 V

CC(I/O)

CC(I/O)

V

+ 0.3 V

CC(I/O)

Junction temperature range – 40 85 ° C

V

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ADVANCED UNIVERSAL SERIAL BUS TRANSCEIVER

TUSB2551

SCES667 – FEBRUARY 2008

DC ELECTRICAL CHARACTERISTICS SYSTEM AND USB INTERFACE

V

= 3.6 V, V

CC(I/O)

= 5 V (unless otherwise noted), TA= 25  C. Bold indicates specifications over temperature, – 40 ° C to

CC(5.0)

(1)

85 ° C

PARAMETER TEST CONDITIONS MIN TYP MAX UNIT

V

OH

V

OL

I

IL

I

CC(I/O)

I

CC(5.0)

I

PU(3.3)LEAK

I

CC(I/O)LEAK

V

PU(3.3)

R

SW

ESD PROTECTION

IEC-61000-4- Air-Gap Discharge 10 pulses ± 9
2
(D+, D – ,
V

CC(5.0)

(1) Specification for packaged product only
(2) Specification applies to the following pins: RCV, VP, VM, OE.

High-level output
voltage

Low-level output
voltage

Input leakage current

(2)

(2)

IOH= 20 µ A 0.9 V

IOL= 20 µ A 0.1 V

(2)

SPEED SUSPEND OE VOLTAGE LOAD

1 0 1 1 5
1 0 0 1 5
0 0 1 1 5 µ A

V

=

V

supply current

CC(I/O)

0 0 0 1 5
0 1 0 1 5

1 0 0 1 2 mA

0 0 0 260 280 µ A

CC(5.0)

5.25 V,

V

=

CC(I/O)

3.6 V

f = 6 MHz,

CL= 50 pF

f = 750 kHz,

CL= 600 pF
1 0 1 800 1100
1 0 0 3000 5000
0 0 1 230 350 µ A

V

=

V

supply current

CC(5.0)

0 1 0 130 200
1 0 0 6 10

0 0 0 4..3 5

V

0 0 0 400 700

leakage current SOFTCON = 1, V

PU(3.3)

V

leakage current V

CC(I/O)

Pullup output voltage I
V

switch

PU(3.3)

resistance

Contact Discharge 10 pulses ± 9

only)

= 3.6 V, V

CC(I/O)

= 200 µ A, V

reg(3.3)

I

= 10 mA, V

reg(3.3)

= 0 V – 5 5 µ A

PU(3.3)

= 0 V – 5 5 µ A

CC(5.0)

= 4 V to 5.25 V 3 3.3 3.6 V

CC(5.0)

= 4 V to 5.25 V 10 Ω

CC(5.0)

CC(5.0)

5.25 V,

V

=

CC(I/O)

3.6 V

f = 6 MHz,

CL= 50 pF

f = 750 kHz,

CL= 600 pF

CC(I/O)

– 5 1.5 5 µ A

V

mA

kV

Copyright © 2008, Texas Instruments Incorporated Submit Documentation Feedback 7

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TUSB2551
ADVANCED UNIVERSAL SERIAL BUS TRANSCEIVER

SCES667 – FEBRUARY 2008

DC ELECTRICAL CHARACTERISTICS TRANSCEIVER

PARAMETER TEST CONDITIONS MIN TYP MAX UNIT

LEAKAGE CURRENT

I

LO

INPUT LEVELS

V

DI

V

CM

V

SE

OUTPUT LEVELS

V

OL

V

OH

CAPACITANCE

C

IN

Z

DRV

(1) Specification for packaged product only

Hi-Z state data line leakage (suspend mode) 0 V < VIN< 3.3 V, SUSPEND = 1 – 10 10 µ A

Differential input sensitivity |(D+) – (D – )| 0.2 V
Differential common mode range Includes VDIrange 0.8 2.5 V
Single-ended receiver threshold 0.8 2 V
Receiver hysteresis 200 mV

Static output low RL= 1.5 k Ω to 3.6 V 0.3 V
Static output high RL= 15 k Ω to GND 2.8 3.6 V

Transceiver capacitance Pin to GND 10 pF
Driver output resistance Steady-state drive 1 6 11 Ω

(1)

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ADVANCED UNIVERSAL SERIAL BUS TRANSCEIVER

TUSB2551

SCES667 – FEBRUARY 2008

AC ELECTRICAL CHARACTERISTICS

(1)

PARAMETER TEST CONDITIONS MIN MAX UNIT

DRIVER CHARACTERISTICS (LOW SPEED)

T

R

T

F

Transition rise time 75 300 ns

Transition fall time 75 300 ns

LRFM Rise/fall time matching TR, T
V

CRS

Output signal crossover voltage 1.3 2 V

CL= 200 pF, See Figure 2
CL= 600 pF

CL= 200 pF, See Figure 2
CL= 600 pF

F

80 125 %

DRIVER CHARACTERISTICS (FULL SPEED)

T

R

T

F

Transition rise time CL= 50 pF, See Figure 2 4 20 ns

Transition fall time CL= 50 pF, Figure 2 4 20 ns
FRFM Rise/fall time matching (TR, TF) 90 111.1 %
V

CRS

Output signal crossover voltage 1.3 2 V

TRANSCEIVER TIMING (FULL SPEED)

t

PVZ

t

PZD

t

PDZ

t

PZV

t

PLH

t

PHL

t

PLH

t

PHL

t

PLH

t

PHL

OE to receiver 3-state delay See Figure 1 15 ns

Receiver 3-state to transmit delay See Figure 1 15 ns

OE to driver 3-state delay See Figure 1 15 ns

Driver 3-state to receive delay See Figure 1 15 ns

VP, VMto D+, D – propagation delay See Figure 4 17 ns

D+, D – to RCV propagation delay See Figure 3 17 ns

D+, D – to VP, VMpropagation delay See Figure 3 10 ns

(1) Specification for packaged product only

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t

PVZ

OE

VP/V

M

D+/D–

TRANSMIT

RECEIVE

t

PZD

t

PDZ

t

PZV

t

R

RISE TIME

Differential
Data Lines

10%

90%

10%

90%

t

F

FALL TIME

t

PLH

V

CRS

V

SS

V

OL

V

OH

D–

D+

V

CRS

Differential
Data Lines

t

PHL

t

PLH

V

CRS

V

OL

V

OH

D–

D+

V

CRS

Differential
Data Lines

t

PHL

TUSB2551
ADVANCED UNIVERSAL SERIAL BUS TRANSCEIVER

SCES667 – FEBRUARY 2008

TIMING DIAGRAMS

Figure 1. Enable and Disable Times

Figure 2. Rise and Fall Times

Figure 3. Receiver Propagation Delay

Figure 4. Driver Propagation Delay

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Product Folder Link(s): TUSB2551

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D.U.T.

25 pF

D.U.T.

C

L

15k

20

VTRM

k15

ADVANCED UNIVERSAL SERIAL BUS TRANSCEIVER

TEST CIRCUITS

Figure 5. Load for VP, VM, RCV

Figure 6. Load for D+, D –

TUSB2551

SCES667 – FEBRUARY 2008

Copyright © 2008, Texas Instruments Incorporated Submit Documentation Feedback 11

Product Folder Link(s): TUSB2551

PACKAGE OPTION ADDENDUM

www.ti.com

17-Jul-2010

PACKAGING INFORMATION

Orderable Device

TUSB2551PW NRND TSSOP PW 14 90 Green (RoHS

TUSB2551PWG4 NRND TSSOP PW 14 90 Green (RoHS

TUSB2551PWR NRND TSSOP PW 14 2000 Green (RoHS

TUSB2551PWRG4 NRND TSSOP PW 14 2000 Green (RoHS

TUSB2551RGTR NRND QFN RGT 16 3000 TBD Call TI Call TI Samples Not Available

(1)

The marketing status values are defined as follows:

ACTIVE: Product device recommended for new designs.
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design.
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.
OBSOLETE: TI has discontinued the production of the device.

Status

(1)

Package Type Package

Drawing

Pins Package Qty

Eco Plan

& no Sb/Br)

& no Sb/Br)

& no Sb/Br)

& no Sb/Br)

(2)

Lead/

Ball Finish

CU NIPDAU Level-1-260C-UNLIM Samples Not Available

CU NIPDAU Level-1-260C-UNLIM Samples Not Available

CU NIPDAU Level-1-260C-UNLIM Samples Not Available

CU NIPDAU Level-1-260C-UNLIM Samples Not Available

MSL Peak Temp

(3)

Samples

(Requires Login)

(2)

Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check http://www.ti.com/productcontent for the latest availability

information and additional product content details.

TBD: The Pb-Free/Green conversion plan has not been defined.
Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements for all 6 substances, including the requirement that

lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes.
Pb-Free (RoHS Exempt): This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and package, or 2) lead-based die adhesive used between
the die and leadframe. The component is otherwise considered Pb-Free (RoHS compatible) as defined above.
Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame retardants (Br or Sb do not exceed 0.1% by weight
in homogeneous material)

(3)

MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature.

Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information
provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and
continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals.
TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release.

In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI to Customer on an annual basis.

Addendum-Page 1

PACKAGE MATERIALS INFORMATION

www.ti.com 30-Jul-2010

TAPE AND REEL INFORMATION

*All dimensions are nominal

Device Package

Type

TUSB2551PWR TSSOP PW 14 2000 330.0 12.4 6.9 5.6 1.6 8.0 12.0 Q1

Package
Drawing

Pins SPQ Reel

Diameter

(mm)

Reel

Width

W1 (mm)

A0

(mm)B0(mm)K0(mm)P1(mm)W(mm)

Pin1

Quadrant

Pack Materials-Page 1

PACKAGE MATERIALS INFORMATION

www.ti.com 30-Jul-2010

*All dimensions are nominal

Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm)

TUSB2551PWR TSSOP PW 14 2000 346.0 346.0 29.0

Pack Materials-Page 2

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TI assumes no liability for applications assistance or customer product design. Customers are responsible for their products and
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