MAXIM MAX3346E User Manual

General Description

The MAX3346E bidirectional transceiver converts logic­level signals to USB signals, and USB signals to logic­level signals. The MAX3346E includes the 1.5kΩ USB
pullup resistor internally, and supports both full-speed
(12Mbps) and low-speed (1.5Mbps) USB operation.
The device has built-in ±15kV ESD protection circuitry
to guard the USB I/O pins, D+ and D-.

The MAX3346E operates with VLvoltages as low as

1.65V, ensuring compatibility with low-voltage ASICs.
The device features a logic-selectable suspend mode
that lowers current draw to less than 40µA. The
MAX3346E has an enumerate function that allows
devices to logically disconnect while plugged in. The
MAX3346E is fully compliant with USB specification 1.1,
and the full-speed and low-speed operation under USB
specification 2.0.

The MAX3346E is available in the miniature 4 x 4 chip­scale package (UCSPTM), as well as the small 14-pin
TSSOP, and is rated for the -40°C to +85°C extended
temperature range.

Applications

Cell Phones
PC Peripherals
Data Cradles
PDAs
MP3 Players

Features

♦ ±15kV ESD Protection on D+ and D-
♦ Internal Linear Regulator Allows Direct Powering

from the USB Cable

♦ Internal 1.5kΩ Pullup Resistor for Low/Full-Speed

Operation

♦ Supports Low-Speed and Full-Speed USB

Communications

♦ Complies with USB Specification Revision 1.1 and

2.0 (Low Speed and Full Speed)

♦ Three-State Outputs
♦ Enumerate Input—Allows USB Connection

through Software

♦ No Power-Supply Sequencing Required
♦ Operates with VLof 1.65V to 3.6V, Ensuring

Compatibility with Low-Voltage ASICs

♦ Available in Miniature Chip-Scale Package

MAX3346E

±15kV ESD-Protected USB Transceiver

in UCSP

________________________________________________________________ Maxim Integrated Products 1

14

13

12

11

10

9

8

1

2

3

4

5

6

7

V

L

VTRM

D+

D-VM

MODE

VP

RCV

TOP VIEW

MAX3346E

GND

V

CC

SPEEDSUSP

ENUM

OE

TSSOP

BOTTOM VIEW

UCSP

V

CC

V

L

GND

VTRM

D+

D-

SPEED

MODE

RCV

SUSP

VM

VP

ENUM

OE

MAX3346E

A

B

C

D

1234

Pin Configurations

Ordering Information

19-3172; Rev 0; 2/04

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

PART

TEMP RANGE

PIN-PACKAGE

MAX3346EEUD

14 TSSOP

MAX3346EEBE-T

4 x 4 UCSP

UCSP is trademark of Maxim Integrated Products, Inc.

-40°C to +85°C

-40°C to +85°C

MAX3346E

±15kV ESD-Protected USB Transceiver
in UCSP

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

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 in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.

Supply Voltage (VCC) ...............................................-0.3V to +6V

Output of Internal Regulator (VTRM)..........-0.3V to (V

CC

+ 0.3V)

Input Voltage (D+, D-)..............................................-0.3V to +6V

System Supply Voltage (V

L

) .....................................-0.3V to +6V

RCV, SUSP, VM, VP, MODE,

OE, SPEED, ENUM ....................................-0.3V to (VL+ 0.3V)

Short-Circuit Current (D+, D-)

to V

CC

or GND (Note 1) ..........................................Continuous

Maximum Continuous Current (all other pins)..................±15mA

Continuous Power Dissipation (TA= +70°C)

4 x 4 UCSP (derate 7.4mW/°C above +70°C).....589mW [B16-2]

14-Pin TSSOP (derate 9.1mW/°C above +70°C)..727mW [U14-1]

Operating Temperature Range ...........................-40°C to +85°C

Junction Temperature......................................................+150°C

Storage Temperature Range .............................-65°C to +150°C

Lead Temperature (soldering, 10s) .................................+300°C

Bump Temperature (soldering) Reflow............................+235°C

PARAMETER

CONDITIONS

UNITS

SUPPLY INPUTS (VCC, VTRM, VL)

Regulated Supply Voltage

V

VTRM

Internal regulator 3.0 3.3 3.6 V

VL Input Range

V

VCC Input Range 4.0 5.5 V

Operating VCC Supply Current I

VCC

Full-speed transmitting/receiving at
12Mbps, C

L

= 50pF on D+ and D-

8mA

Operating VL Supply Current I

VL

6mA

Full-speed idle: V

D+

> 2.7V, VD- < 0.3V

450

Full-Speed Idle and SE0 Supply
Current

)

SE0: VD+ < 0.3V, VD- < 0.3V

500

µA

Static VL Supply Current

)

Full-speed idle, SE0, or suspend mode 5 µA

Suspend Supply Current

)

SUSP = OE = high 40 µA

Disable-Mode Supply Current

)

VL = GND or open 20 µA

D+/D- Disable-Mode
Load Current

I

D_(DIS)

VL = GND or open, V

D_

= 0 or +5.5V 5 µA

Sharing-Mode VL Supply
Current

)

VCC = GND or open, OE = low,
SUSP = high

20 µA

D+/D- Sharing-Mode
Load Current

)

VCC = GND or open, V

D_

= 0 or +5.5V 20 µA

LINEAR REGULATOR

External Capacitor C

OUT

Compensation of linear regulator 1 µF

(All voltages referenced to GND, unless otherwise noted.)

Note 1: External 23.7Ω resistors connected to D+ and D-.

ELECTRICAL CHARACTERISTICS

(VCC= +4V to +5.5V, GND = 0, VTRM = +3.0V to +3.6V, VL= +1.65V to +3.6V, TA= T

MIN

to T

MAX

, unless otherwise noted. Typical

values are at V

CC

= +5V, VL= +2.5V, TA= +25°C.) (Note 2)

SYMBOL

MIN TYP MAX

1.65 3.60

Full-speed transmitting/receiving at 12Mbps

I

VCC(IDLE

I

VL(STATIC

I

VCC(SUSP

I

VCC(DIS

I

VL(SHARING

I

D_(SHARING

340
390

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

ESD PROTECTION (D+, D-)

Human Body Model

kV

IEC 1000-4-2 Air-Gap Discharge

kV

IEC 1000-4-2 Contact Discharge

±8kV

LOGIC-SIDE I/O

Input High Voltage V

IH

VP, VM, SUSP, SPEED, OE, MODE, ENUM (2/3) x V

L

V

Input Low Voltage V

IL

VP, VM, SUSP, SPEED, OE, MODE, ENUM 0.4 V

Output High Voltage V

OH

I

SOURCE

= +2mA, RCV, VP, VM VL - 0.4 V

Output Low Voltage V

OL

I

SINK

= -2mA, RCV, VP, VM 0.4 V

Input Leakage Current VP, VM, SUSP, ENUM, OE, MODE = 0 or V

L

±1µA

USB-SIDE I/O

Output-Voltage Low V

OLD

RL = 1.5kΩ from D+ or D- to 3.6V 0.3 V

Output-Voltage High V

OHD

RL = 15kΩ from D+ and D- to GND 2.8 3.6 V

Input Impedance Z

IN

VD_ = 0 or +3.6V, ENUM = 0,
three-state driver

1MΩ

Single-Ended Input-Voltage High

V

IH

2.0 V

Single-Ended Input-Voltage Low

V

IL

0.8 V

D+, D- Receiver Hysteresis

mV

D r i ver Outp ut Im p ed ance R

OUT

4.6

Ω

Internal Resistor

1.5

kΩ

Input Common-Mode Voltage

0.8 2.5 V

Differential Input Sensitivity

mV

MAX3346E

±15kV ESD-Protected USB Transceiver

in UCSP

_______________________________________________________________________________________ 3

ELECTRICAL CHARACTERISTICS (continued)

(VCC= +4V to +5.5V, GND = 0, VTRM = +3.0V to +3.6V, VL= +1.65V to +3.6V, TA= T

MIN

to T

MAX

, unless otherwise noted. Typical

values are at V

CC

= +5V, VL= +2.5V, TA= +25°C.) (Note 2)

TIMING CHARACTERISTICS

(VCC= +4V to +5.5V, GND = 0, VTRM = +3.0V to +3.6V, VL= +1.65V to +3.6V, TA= T

MIN

to T

MAX

, unless otherwise noted. Typical

values are at V

CC

= +5V, VL= +2.5V, TA= +25°C.) (Note 2)

PARAMETER

CONDITIONS

UNITS

SPEED INDEPENDENT TIMING CHARACTERISTICS

OE to VP/VM Three-State Delay
Disable Time

t

PVZ

Figures 1a and 4a 20 ns

OE to VP/VM Delay
Enable Time

t

PZV

Figures 1a and 4a 25 ns

D+/D- to RCV Propagation Delay

t

PLH

CL = 25pF, Figures 4b and 5 18 ns

D+/D- to RCV Propagation Delay

t

PHL

CL = 25pF, Figures 4b and 5 18 ns

R

PULLUP

±15
±10

200

1.410

16.0

1.540

SYMBOL

200

MIN TYP MAX

MAX3346E

±15kV ESD-Protected USB Transceiver
in UCSP

4 _______________________________________________________________________________________

TIMING CHARACTERISTICS (continued)

(VCC= +4V to +5.5V, GND = 0, VTRM = +3.0V to 3.6V, VL= +1.65V to +3.6V, TA= T

MIN

to T

MAX

, unless otherwise noted. Typical

values are at V

CC

= +5V, VL= +2.5V, TA= +25°C.) (Note 2)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

t

PLH

CL = 25pF, Figures 4b and 5 18

D+/D- to VP/VM Propagation
Delay

t

PHL

CL = 25pF, Figures 4b and 5 18

ns

FULL-SPEED TIMING CHARACTERISTICS

OE to Transmit Delay Enable
Time

t

PZD

(Figures 1b, 4d) 20 ns

OE to Driver Three-State Delay
Disable Time

t

PDZ

(Figures1b, 4d) 20 ns

t

PLH

(Figures 3, 4c) 18

VP/VM to D+/D- Propagation
Delay (MODE = 1)

t

PHL

(Figures 3, 4c) 18

ns

t

PHL0

CL = 50pF (Figures 2, 4c) 20

VP to D+/D- Propagation Delay
(MODE = 0)

t

PLH0

CL = 50pF (Figures 2, 4c) 20

ns

D+, D- Rise Time t

R

CL = 50pF, 10% to 90% of |VOH - VOL|4 20ns

D+, D- Fall Time t

F

CL = 50pF, 90% to 10% of |VOH - VOL|4 20ns

Rise- and Fall-Time Matching
(Note 3)

t

R/tF

CL = 50pF 90

%

Output-Signal Crossover Voltage
(Note 3)

V

CRS

CL = 50pF 1.3 2.0 V

LOW-SPEED TIMING CHARACTERISTICS

t

PLH

Figures 3 and 4c, CL = 50pF to 600pF 30

VP/VM to D+/D- Propagation
Delay (MODE = 1)

t

PHL

Figures 3 and 4c, CL = 50pF to 600pF 30

ns

t

PHL0

Figures 2 and 4c, CL = 50pF to 600pF 30

VP to D+/D- Propagation Delay
(MODE = 0)

t

PLH0

Figures 2 and 4c, CL = 50pF to 600pF 30

ns

D+/D- Rise Time t

R

CL = 50pF to 600pF 75

ns

D+/D- Fall Time t

F

CL = 50pF to 600pF 75

ns

Rise- and Fall-Time Matching tR/t

F

CL = 50pF to 600pF 80

%

Output-Signal Crossover Voltage

V

CRS

CL = 50pF to 600pF 1.3 2.0 V

Note 2: Parameters are 100% production tested at +25°C, limits over temperature are guaranteed by design.
Note 3: Guaranteed by design, not production tested.

110

250
250
250
250
300
300
125

MAX3346E

±15kV ESD-Protected USB Transceiver

in UCSP

_______________________________________________________________________________________ 5

SINGLE-ENDED RECEIVER

PROPAGATION DELAY vs. V

L

MAX3346E toc01

VL (V)

PROPAGATION DELAY (ns)

3.33.01.8 2.1 2.4 2.7

8

9

10

11

12

13

14

15

7

1.5 3.6

TA = +85°C

TA = +25°C

TA = -40°C

SINGLE-ENDED RECEIVER

PROPAGATION DELAY vs. V

CC

MAX3346E toc02

V

CC

(V)

PROPAGATION DELAY (ns)

5.00 5.254.754.25 4.50

8

9

10

11

12

13

14

15

7

4.00 5.50

TA = +85°C

TA = +25°C

TA = -40°C

SKEW vs. V

CC

(MODE 0, FULL SPEED)

MAX3346E toc03

V

CC

(V)

SKEW (ns)

5.00 5.254.754.25 4.50

0.6

0.8

1.0

1.2

1.4

1.6

1.8

2.0

0.4

4.00 5.50

TA = +85°C

TA = +25°C

TA = -40°C

0

0.1

0.2

0.6

0.4

0.8

0.3

0.7

0.5

0.9

1.0

4.00 4.504.25 4.75 5.00 5.25 5.50

SKEW VS. V

CC

(MODE 0, LOW SPEED)

MAX3346E toc04

VCC (V)

SKEW (ns)

TA = -40°C

TA = +25°C

TA = +85°C

MAX3346E toc05

A

0

0

200ns/div

B

0

C

OE, VP, VM TIMING

A: VP, 2V/div
B: VM, 2V/div
C: OE, 5V/div

(FIGURE 4a)

MAX3346E toc06

A

0

0

200ns/div

B

0

C

OE, VP, VM TIMING

A: VP, 2V/div
B: VM, 2V/div
C: OE, 5V/div

(FIGURE 4a)

VTRM vs. V

CC

MAX3346E toc07

VCC (V)

VTRM (V)

5.255.004.754.504.25

3.1

3.2

3.3

3.4

3.5

3.0

4.00 5.50

I

VTRM

= 15mA

Typical Operating Characteristics

(VCC= +5V, VL=+3.3V, TA = +25°C, unless otherwise noted.)

MAX3346E

±15kV ESD-Protected USB Transceiver
in UCSP

6 _______________________________________________________________________________________

RISE- AND FALL-TIME MATCHING

(LOW SPEED)

MAX3346E toc09

D+

100ns/div

0

D-

f = 750kHz

RISE- AND FALL-TIME MATCHING

(FULL SPEED)

MAX3346E toc10

D+

20ns/div

0

D-

f = 6MHz

Typical Operating Characteristics (continued)

(VCC= +5V, VL= +3.3V, TA = +25°C, unless otherwise noted.)

Pin Description

PIN

TSSOP

UCSP

NAME

INPUT/

FUNCTION

1D2RCV Output

Receiver Output. Single-ended CMOS output. RCV responds to the differential
input on D+ and D- (see Table 3).

2D1VP

Input/

Output

System-Side Data Input/Output. Drive OE high to make VP a receiver output.
Drive OE low to make VP a driver input (see Table 3).

3C2MODE Input

Mode Control Input. Selects single-ended (mode zero) or differential (mode one)
input for the system side when converting logic-level signals to USB-level
signals. If MODE is forced high, mode one is selected. If MODE is forced low,
mode zero is selected (see Table 3).

4C1VM

Input/

Output

System-Side Data Input/Output. Drive OE high to make VM a receiver output.
Drive OE low to make VM a driver input (see Table 3).

5B1OE Input

Output Enable. Drive OE high to enable the receiver. Drive OE low to enable the
driver input.

6A1ENUM Input

Enumerate Input. Drive ENUM low to disconnect the internal 1.5kΩ resistor, and
enumerate the USB. With ENUM high, the internal 1.5kΩ resistor is connected to
either D+ or D-, depending on the state of SPEED.

SUSPEND RESPONSE

A

0

B

0

A: SUSP, 2V/div
B: RCV, 2V/div

MAX3346E toc08

100ns/div

OUTPUT