TEXAS INSTRUMENTS TUSB2551 Technical data

NC – No internal connection

CC(I/O)

CC(5.0)

PU(3.3)

SPEED

RCV

reg(3.3)

D+

D–

SOFTCON

GND

SUSPEND

16 1315

GND

(Exposed die pad)

RGT PACKAGE

(BOTTOMVIEW)

PW PACKAGE

(TOP VIEW)

CC(I/O)

CC(5.0)

PU(3.3)

reg(3.3)

SPEED

RCV

SOFTCON

GND

D+ D– OE SUSPEND

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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)

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.

– 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

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.

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(5.0)

reg(3.3)

PU(3.3)

D+

D–

(I/O)

SOFTCON

SPEED

RCV

SUSPEND

GND

LDO

Regulator

ToInternal Circuitry

Level

Translator

TUSB2551 ADVANCED UNIVERSAL SERIAL BUS TRANSCEIVER

SCES667 – FEBRUARY 2008

BLOCK DIAGRAM

Product Folder Link(s): TUSB2551

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ADVANCED UNIVERSAL SERIAL BUS TRANSCEIVER

TERMINAL FUNCTIONS

TERMINAL

NAME

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)

PU(3.3)

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)

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)

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)

RESULT

SE0

Undefined

RESULT

SE0

Undefined

Product Folder Link(s): TUSB2551

www.ti.com

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)

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)

Table 2. Pin States in Disable or Sharing Mode

PINS DISABLE-MODE STATE SHARING-MODE STATE

CC(5.0)

reg(3.3)

CC(I/O)

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)

Product Folder Link(s): TUSB2551

www.ti.com

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)

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)

Supply input Supply input for digital I/O pins

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

CC(I/O)

Product Folder Link(s): TUSB2551

www.ti.com

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

CC(5.0)

reg(3.3)

CC(I/O)

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

(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)

– 0.3 0.15 V

CC(I/O)

0.85 V

CC(I/O)

+ 0.3 V

CC(I/O)

Junction temperature range – 40 85 ° C

Product Folder Link(s): TUSB2551

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