MAXIM MAX3453E, MAX3456E User Manual

General Description

The MAX3453E–MAX3456E ±15kV ESD-protected USB­compliant transceivers interface low-voltage ASICs with
USB devices. The devices fully comply with USB 1.1
and USB 2.0 when operating at full (12Mbps) and low
(1.5Mbps) speeds. The MAX3453E–MAX3456E operate
with VLas low as +1.65V, ensuring compatibility with
low-voltage ASICs.

The MAX3453E–MAX3456E feature a logic-selectable
suspend mode that reduces current consumption to
less than 40µA. Integrated ±15kV ESD protection pro­tects the USB D+ and D- bidirectional bus connections.

The MAX3453E supports only full-speed (12Mbps)
operation. The MAX3453E/MAX3454E feature an inter­nal 1.5kΩ USB pullup resistor and an enumeration func­tion that allows devices to logically disconnect while
plugged in. The MAX3453E/MAX3455E provide a push­pull bus-detect (BD) output that asserts high when
V

BUS

> +4.0V.

The MAX3453E–MAX3456E operate over the extended
temperature range (-40°C to +85°C) and are available
in 14-pin TSSOP and 16-pin (3mm x 3mm) thin QFN
packages.

Applications

PDAs

PC Peripherals

Cellular Telephones

Data Cradles

MP3 Players

Features

♦ ±15kV ESD Protection on D+ and D-

♦ USB 1.1 and USB 2.0 (Low-Speed and Full-Speed)-

Compliant Transceivers

♦ Combined VP and VM Inputs/Outputs

♦ +1.65V to +3.6V V

L

Logic Supply Input for

Interfacing with Low-Voltage ASICs

♦ Enumerate Input Function (MAX3453E/MAX3454E)

♦ Powered from Li+ Battery as Low as +3.1V

(MAX3454E/MAX3456E)

♦ V

BUS

Detection (MAX3453E/MAX3455E)

♦ Internal Pullup Resistor (MAX3453E/MAX3454E)

♦ No Power-Supply Sequencing Required

MAX3453E–MAX3456E

±15kV ESD-Protected USB Transceivers

________________________________________________________________ Maxim Integrated Products 1

19-2924; Rev 4; 2/06

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.

Ordering Information

PART

PIN-PKG

PKG CODE

MAX3453EEUD

14 TSSOP U14-1

MAX3453EETE

T1633-4

MAX3454EEUD

14 TSSOP U14-1

MAX3454EETE

T1633-4

MAX3455EEUD

14 TSSOP U14-1

MAX3455EETE

T1633-4

MAX3456EEUD

14 TSSOP U14-1

MAX3456EETE

T1633-4

Typical Operating Circuit appears at end of data sheet.

Pin Configurations appear at end of data sheet.

Selector Guide

PART

V

BUS

POWER-

SUPPLY

VL POWER-

SUPPLY

INTERNAL

PULLUP

RESISTOR

V

BUS

LEVEL

DETECT

ENUMERATE

USB SPEED

±15kV ESD

PROTECTION

4.0 to 5.5 1.65 to 3.6 Yes Yes Yes Full Yes

3.0 to 5.5 1.65 to 3.6 Yes No Yes Low/full Yes

4.0 to 5.5 1.65 to 3.6 No Yes No Low/full Yes

3.0 to 5.5 1.65 to 3.6 No No No Low/full Yes

TEMP RANGE

-40oC to +85oC

-40oC to +85oC 16 Thin QFN

-40oC to +85oC

-40oC to +85oC 16 Thin QFN

-40oC to +85oC

-40oC to +85oC 16 Thin QFN

-40oC to +85oC

-40oC to +85oC 16 Thin QFN

VOLTAGE (V)

MAX3453E

MAX3454E

MAX3455E

MAX3456E

VOLTAGE (V)

SUPPORTED

MAX3453E–MAX3456E

±15kV ESD-Protected USB Transceivers

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.

DC ELECTRICAL CHARACTERISTICS

(V

BUS

= +4.0V to +5.5V or V

TRM

= +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

BUS

= +5.0V, VL= +2.5V, and TA= +25°C.) (Note 1)

PARAMETER

SYM B O L

CONDITIONS

MIN

TYP

MAX

UNITS

SUPPLY INPUTS (V

BUS

, V

TRM

, VL)

V

TRM

Internal regulator 3.0 3.3 3.6 V

Operating Supply Current I

VBUS

Full-speed transmitting and receiving at

10 mA

Operating VL Supply Current I

VL

Full-speed transmitting and receiving at
12Mbps (Note 2)

2.5 mA

Full-speed idle: VD+ > 2.7V, VD- < 0.3V

350

Full-Speed Idle and SE0 Supply
Current

)

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

350

µA

15

Static VL Supply Current

)

Full-speed idle,
SE0, or suspend
mode

5

µA

MAX3453E
(ENUM = low),
MAX3455E

40

Suspend Supply Current

)

VM = VP = open,

MAX3454E
(ENUM = low),
MAX3456E

35

µA

Disable Mode Supply Current

)

VL = GND or open 20 µA

20

)

V

BUS

= GND or

open, OE = low,
VP = low or high,
VM = low or

5

µA

D+/D- Sharing Mode Load
Current

)

V

BUS

= GND or open, VD_ = 0 or +5.5V 20 µA

D+/D- Disable Mode Load
Current

I

D_(DIS)

VL = GND or open, VD_ = 0 or +5.5V 5 µA

V

BUS

, VL, D+, D- to GND.......................................-0.3V to +6.0V

V

TRM

to GND ............................................-0.3V to (V

BUS

+ 0.3V)

VP, VM, SUS, ENUM, SPD,

RCV,

OE, BD to GND ................................-0.3V to (VL+ 0.3V)

Current (into any pin) ........................................................±15mA

Short-Circuit Current (D+ and D-)...................................±150mA

Continuous Power Dissipation (T

A

= +70°C)

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

16-Pin Thin QFN (derate 14.7mW/°C above +70°C)....1176mW

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

Regulated Supply Voltage Output

I

Sharing Mode VL Supply Current I

VBUS(IDLE

I

VL(STATIC

I

VBUS(SUSP

I

VBUS(DIS

VL(SHARING

I

D_(SHARING

12Mbps, CL = 50pF on D+ and D- (Note 2)

250

250

MAX3453E/MAX3455E

MAX3454E/MAX3456E

SUS = OE = high

high, SUS = high

MAX3453E/MAX3455E

MAX3454E/MAX3456E

MAX3453E–MAX3456E

±15kV ESD-Protected USB Transceivers

_______________________________________________________________________________________ 3

DC ELECTRICAL CHARACTERISTICS (continued)

(V

BUS

= +4.0V to +5.5V or V

TRM

= +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

BUS

= +5.0V, VL= +2.5V, and TA= +25°C.) (Note 1)

PARAMETER

CONDITIONS

UNITS

MAX3453E/MAX3455E, supply lost 3.6

MAX3453E/MAX3455E, supply present 4.0

MAX3454E/MAX3456E, supply lost 0.8

USB Power-Supply Detection
Threshold

MAX3454E/MAX3456E, supply present
(Note 3)

3.6

V

MAX3453E/MAX3455E 40

USB Power-Supply Detection
Hysteresis

MAX3454E/MAX3456E 75

mV

VL Power-Supply Detection
Threshold

V

TH_VL

V

DIGITAL INPUTS/OUTPUTS (VP, VM, RCV, SUS, OE, SPD, BD, ENUM)

Input-Voltage Low V

IL

VM, VP, SUS, SPD, ENUM, OE

V

Input-Voltage High V

IH

VM, VP, SUS, SPD, ENUM, OE

V

Output-Voltage Low V

OL

VM, VP, RCV, BD, IOL = +2mA 0.4 V

Output-Voltage High V

OH

VM, VP, RCV, BD, IOH = -2mA

V

Input Leakage Current I

LKG

-1 +1 µA

Input Capacitance C

IN

Measured from input to GND 10 pF

ANALOG INPUTS/OUTPUTS (D+, D-)

Differential Input Sensitivity V

ID

|VD+ - VD-| 0.2 V

Differential Common-Mode
Voltage

V

CM

Includes VID range 0.8 2.5 V

V

ILSE

0.8 V

V

IHSE

2.0 V

Hysteresis V

HYST

mV

Output-Voltage Low V

OLD

RL = 1.5kΩ to +3.6V 0.3 V

Output-Voltage High V

OHD

RL = 15kΩ to GND 2.8 3.6 V

Off-State Leakage Current I

LZ

-1 +1 µA

Transceiver Capacitance C

IND

Measured from D_ to GND 20 pF

Driver Output Impedance Z

DRV

Steady-state drive 3.5

Ω

Input Impedance Z

IN

Driver off 10 MΩ

Internal Pullup Resistance

I

LOAD

= 500µA (MAX3453E/MAX3454E)

(Note 4)

kΩ

ESD PROTECTION (D+, D-)

Human Body Model

kV

±8kV

Single-Ended Input Low Voltage

Single-Ended Input High Voltage

IEC 61000-4-2 Contact Discharge

SYM B O L

V

TH_VBUS

V

HYST_VBUS

R

PULLUP

MIN TYP MAX

0.7 x V

VL - 0.4

1.425 1.575

0.85

L

250

±15

0.3 x V

L

15.5

MAX3453E–MAX3456E

±15kV ESD-Protected USB Transceivers

4 _______________________________________________________________________________________

Note 1: Parameters are 100% production tested at +25°C, unless otherwise noted. Limits over temperature are guaranteed by design.
Note 2: Guaranteed by design, not production tested.
Note 3: Production tested to +2.7V for VL< +3.0V.
Note 4: Including external 27Ω series resistor.

TIMING CHARACTERISTICS

(V

BUS

= +4.0V to +5.5V or V

TRM

= +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

BUS

= +5V, VL= +2.5V, and TA= +25°C.) (Note 1)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

DRIVER CHARACTERISTICS (Full-Speed Mode, CL = 50pF)

Rise Time t

FR

10% to 90% of |V

OHD

- V

OLD

|, Figures 1, 6 4 20 ns

Fall Time t

FF

90% to 10% of |V

OHD

- V

OLD

|, Figures 1, 6 4 20 ns

Rise/Fall-Time Matching (Note 2)

Excluding the first transition from idle state,
Figures 1, 6

90 110 %

Output-Signal Crossover Voltage
(Note 2)

V

CRS_F

Excluding the first transition from idle state,
Figures 2, 6

1.3 2.0 V

Low-to-high transition, Figures 2, 6 18

Driver Propagation Delay

High-to-low transition, Figures 2, 6 18

ns

High-to-off transition, Figure 3 20 ns

Driver Disable Delay

Low-to-off transition, Figure 3 20 ns

Off-to-high transition, Figure 3 20 ns

Driver Enable Delay

Off-to-low transition, Figure 3 20 ns

DRIVER CHARACTERISTICS (low-speed mode, CL = 200pF to 600pF, MAX3454E/MAX3455E/MAX3456E)

Rise Time t

LR

10% to 90% of |V

OHD

- V

OLD

|, Figures 1, 6 75 300 ns

Fall Time t

LF

90% to 10% of |V

OHD

- V

OLD

|, Figures 1, 6 75 300 ns

Rise/Fall-Time Matching

Excluding the first transition from idle state,
Figures 1, 6

80 125 %

Output-Signal Crossover Voltage

V

CRS_L

Excluding the first transition from idle state,
Figures 2, 6

1.3 2.0 V

RECEIVER CHARACTERISTICS (CL = 15pF)

Low-to-high transition, Figures 4, 6 22

Differential Receiver Propagation
Delay

High-to-low transition, Figures 4, 6 22

ns

Low-to-high transition, Figures 4, 6 12

Single-Ended Receiver
Propagation Delay

High-to-low transition, Figures 4, 6 12

ns

High-to-off transition, Figure 5 15

Single-Ended Receiver Disable
Delay

t

PLZ_SE

Low-to-off transition, Figure 5 15

ns

Off-to-high transition, Figure 5 15

Single-Ended Receiver Enable
Delay

t

PZL_SE

Off-to-low transition, Figure 5 15

ns

tFR / t

FF

t

PLH_DRV

t

PHL_DRV

t

PHZ_DRV

t

PLZ_DRV

t

PZH_DRV

t

PZL_DRV

tLR / t

t

PLH_RCV

t

PHL_RCV

t

PLH_SE

t

PHL_SE

t

PHZ_SE

t

PZH_SE

LF

MAX3453E–MAX3456E

±15kV ESD-Protected USB Transceivers

_______________________________________________________________________________________ 5

SINGLE-ENDED RECEIVER

PROPAGATION DELAY vs. V

L

MAX3453E-56E toc01

VL (V)

PROPAGATION DELAY (ns)

3.43.21.8 2.0 2.2 2.6 2.82.4 3.0

1

2

3

4

5

6

7

8

0

1.6 3.6

CL = 15pF

TA = +25°C

TA = +85°C

TA = -40°C

RISE-/FALL-TIME MATCHING

(FULL SPEED)

MAX3453E-56E toc02

20ns/div

D+/D­1V/div

CL = 50pF

MAX3453E-56E toc03

100ns/div

RISE-/FALL-TIME MATCHING

(LOW SPEED)

CL = 400pF

D+/D­1V/div

Typical Operating Characteristics

(V

BUS

= +5.0V, VL= +3.3V, TA= +25°C, unless otherwise noted.)

MAX3453E-56E toc04

20ns/div

OE, VP, VM TIMING

CL = 15pF

VP
2V/div

VM
2V/div

OE
5V/div

SUPPLY CURRENT

vs. D+/D- CAPACITANCE

MAX3453E-56E toc05

D+/D- CAPACITANCE (pF)

SUPPLY CURRENT (mA)

350300200 250100 15050

2

4

6

8

10

12

14

16

18

20

22

24

0

0 400

SPD = GND, fIN = 750kHz

SPD = VL, fIN = 6MHz

LOGIC SUPPLY CURRENT

vs. D+/D- CAPACITANCE

MAX3453E-56E toc06

D+/D- CAPACITANCE (pF)

LOGIC SUPPLY CURRENT (µA)

350300200 250100 15050

50

100

150

200

250

300

350

400

450

500

0

0400

SPD = GND, fIN = 750kHz

SPD = VL, fIN = 6MHz

MAX3453E–MAX3456E

±15kV ESD-Protected USB Transceivers

6 _______________________________________________________________________________________

PIN

MAX3454E/
MAX3455E/

MAX3456E

MAX3453E

TSSOP

TSSOP

NAME

FUNCTION

1 15 1 15 V

L

Digital I/O Connections Logic Supply. Connect a +1.65V to
+3.6V supply to V

L

. Bypass VL to GND with a 0.1µF ceramic

capacitor.

21——SPD

Speed Selector Input. Connect SPD to GND to select the low­speed data rate (1.5Mbps). Connect SPD to V

L

to select the full­speed data rate (12Mbps). The MAX3453E only supports full­speed operation.

3232RCV

D i ffer enti al Recei ver O utp ut. RC V r esp ond s to the d i ffer enti al i np uts
on D + and D - ( see Tab l es 3, 4) . RC V asser ts l ow i f S U S = V

L

.

4343VP

Receiver Output/Driver Input. VP functions as a receiver output
when OE = VL. VP duplicates D+ when receiving. VP functions
as a driver input when OE = GND.

5454VM

Receiver Output/Driver Input. VM functions as a receiver output
when OE = V

L

. VM duplicates D- when receiving. VM functions

as a driver input when OE = GND.

6, 13*

6 5, 8, 16 N.C.

No Connection. Not internally connected.
*Pin 13 is No Connection for MAX3456E only.

7676GNDGround

8787SUS

Suspend Input. Drive SUS low for normal operation. Drive SUS
high to put the MAX3453E–MAX3456E into suspend mode. RCV
asserts low in suspend mode. VP and VM remain active in
suspend mode.

9999OE

Output Enable. Drive OE to GND to enable the transmitter
outputs. Drive OE to V

L

to disable the transmitter outputs. OE

also controls the I/O direction of VP and VM (see Tables 3, 4).

10 10 10 10 D-

USB Input/Output. For OE = GND, D- functions as a USB
output, with VM providing the input signal. For OE = V

L

, D­functions as a USB input, with VM functioning as a single-ended
receiver output. Connect a 1.5kΩ resistor from D- to V

TRM

for
low-speed (1.5Mbps) operation (MAX3455E/MAX3456E). Drive
ENUM to V

L

to connect the internal 1.5kΩ resistor from D- to

V

TRM

for low-speed (MAX3454E, SPD = GND) operation.

Pin Description

THIN QFN

5, 8, 13*, 16

THIN QFN

MAX3453E–MAX3456E

±15kV ESD-Protected USB Transceivers

_______________________________________________________________________________________ 7

PIN

MAX3454E/
MAX3455E/

MAX3456E

MAX3453E

TSSOP

TSSOP

NAME

FUNCTION

11 11 11 11 D+

USB Input/Output. For OE = GND, D+ functions as a USB
output, with VP providing the input signal. For OE = V

L

, D+
functions as a USB input, with VP functioning as a single-ended
receiver output. Connect a 1.5kΩ resistor from D+ to V

TRM

for
full-speed (12Mbps) operation (MAX3455E/MAX3456E). Drive
ENUM to V

L

to connect the internal 1.5kΩ resistor (MAX3453E/

MAX3454E) from D+ to V

TRM

for full-speed (MAX3454E, SPD =

V

L

) operation.

12 12 12 12 V

TRM

Internal Regulator Output. V

TRM

provides a regulated +3.3V

output. Bypass V

TRM

to GND with a 1µF (min) ceramic

capacitor as close to the device as possible. V

TRM

normally

derives power from V

BUS

. Alternatively, drive V

TRM

directly with

a +3.3V ±10% supply (MAX3454E/MAX3456E). V

TRM

provides
power to internal circuitry and provides the pullup voltage for an
external USB pullup resistor (MAX3455E/MAX3456E). Do not
use V

TRM

to power external circuitry.

13

(MAX3455E

only)

13

(MAX3455E

only)

13 13 BD

Bus-Detection Output (MAX3453E/MAX3455E). The push-pull
BD output asserts low and the device enters sharing mode if
V

BUS

< +3.6V. BD asserts high if V

BUS

> +4.0V.

13

(MAX3454E

only)

13

(MAX3454E

only)

21

Enumerate Function Selection Input (MAX3453E/MAX3454E).
Drive ENUM to V

L

to connect the internal 1.5kΩ resistor

between V

TRM

and D+ or D-, depending on the state of SPD.
Drive ENUM to GND to disconnect the internal 1.5kΩ resistor.
For SPD = V

L

, the 1.5kΩ resistor connects to D+. For SPD =
GND, the 1.5kΩ resistor connects to D-. For the MAX3453E, the
resistor only connects to D+.

14 14 14 14 V

BUS

USB Power-Supply Input. Connect a +4.0V to +5.5V power
supply to V

BUS

. V

BUS

provides power to the internal linear

regulator. Bypass V

BUS

to GND with a 0.1µF ceramic capacitor

as close to the device as possible. Connect V

BUS

and V

TRM

together when powering the MAX3454E/MAX3456E with an
external power supply (+3.3V ±10%).

Pin Description (continued)

THIN QFN

THIN QFN

ENUM

MAX3453E–MAX3456E

±15kV ESD-Protected USB Transceivers

8 _______________________________________________________________________________________

LEVEL

TRANSLATOR

SUS

RCV

D+

D-

V

TH_VBUS

VP

VM

OE

V

L

TO INTERNAL

CIRCUITRY

TO INTERNAL
CIRCUITRY

LDO

REGULATOR

V

TRM

V

BUS

GND

BD

V

TRM

ENUM

MAX3453E

1.5kΩ

Functional Diagram

MAX3453E–MAX3456E

±15kV ESD-Protected USB Transceivers

_______________________________________________________________________________________ 9

LEVEL

TRANSLATOR

SUS

RCV

D+

D-

VP

SPD

VM

OE

V

L

TO INTERNAL

CIRCUITRY

TO INTERNAL
CIRCUITRY

MAX3454E ONLY

LDO

REGULATOR

V

TRM

V

BUS

GND

BD

V

TRM

ENUM

SPD

CONTROL

LOGIC

MAX3454E–

MAX3456E

1.5kΩ

MAX3455E ONLY

V

TH_VBUS

Functional Diagram (continued)

MAX3453E–MAX3456E

±15kV ESD-Protected USB Transceivers

10 ______________________________________________________________________________________

Detailed Description

The MAX3453E–MAX3456E USB-compliant transceivers
convert single-ended or differential logic-level signals to
USB signals, and USB signals to single-ended or differ­ential logic-level signals. The MAX3453E fully complies
with full-speed (12Mbps) operation under USB specifica­tion 2.0. The MAX3454E–MAX3456E fully comply with
USB specification 1.1, and full-speed (12Mbps) and low­speed (1.5Mbps) operation under USB specification 2.0.
The MAX3453E–MAX3456E operate with V

L

as low as

+1.65V, ensuring compatibility with low-voltage ASICs.
The MAX3453E–MAX3456E derive power from the USB

host (V

BUS

) or from a single-cell Li+ battery

(MAX3454E/MAX3456E) connected to V

BUS

or from a

+3.3V regulated supply connected to V

BUS

and V

TRM

.
The MAX3453E–MAX3456E meet the physical layer
specifications for logic-level supply voltages (V

L

) from
+1.65V to +3.6V. Integrated ±15kV ESD protection safe­guards the D+ and D- USB I/O ports.

The MAX3453E/MAX3454E feature an enumerate func­tion providing an internal 1.5kΩ pullup resistor from D+
(MAX3453E/MAX3454E) or D- (MAX3454E only) to
V

TRM

. The enumerate function disconnects the 1.5kΩ

pullup resistor, allowing the MAX3453E/MAX3454E to
simulate a bus disconnect while powered and connect­ed to the USB cable. The MAX3453E/MAX3455E fea­ture a bus-detect output (BD) that asserts high if V

BUS

> +4V. BD asserts low if V

BUS

< +3.6V. The
MAX3455E/MAX3456E require external pullup resistors
from either D+ or D- to V

TRM

to utilize the appropriate
bus speed. The MAX3456E is pin-for-pin compatible
with the Micrel MIC2550A.

Applications Information

Power-Supply Configurations

Normal Operating Mode

Connect V

L

and V

BUS

to system power supplies (Table 1).

Connect V

L

to a +1.65V to +3.6V supply. Connect V

BUS

to a +4.0V to +5.5V supply. Alternatively, the MAX3454E/
MAX3456E can derive power from a single Li+ battery.
Connect the battery to V

BUS

.

Additionally, the MAX3454E/MAX3456E can derive
power from a +3.3V ±10% voltage regulator. Connect
V

BUS

and V

TRM

to an external +3.3V voltage regulator.

V

BUS

no longer consumes current to power the internal

linear regulator in this configuration.

Table 1. Power-Supply Configurations

V

BUS

(V) V

TRM

(V) VL (V) CONFIGURATION NOTES

4.0 to 5.5 3.0 to 3.6 output 1.65 to 3.6 Normal mode —

3.1 to 4.5 3.0 to 3.6 output 1.65 to 3.6 Battery supply

MAX3454E/MAX3456E

3.0 to 3.6 3.0 to 3.6 input 1.65 to 3.6

MAX3454E/MAX3456E

GND or floating High-Z 1.65 to 3.6 Sharing mode Table 2

3.0 to 5.5 High-Z GND or floating Disable mode Table 2

*High impedance or low.

**High or low.

INPUTS/OUTPUTS DISABLE MODE SHARING MODE

V

BUS/VTRM

+3.0V to +5.5V / High Impedance

• Floating or connected to GND

(MAX3453E/MAX3454E/MAX3456E) / High Impedance

• < 3.6V (MAX3453E/MAX3455E) / High Impedance

V

L

Floating or connected to GND 1.65V to 3.6V input

D+ and D- High impedance High impedance

High impedance for OE = low

VP and VM Invalid*

High for OE = high

RCV Invalid* Undefined**

SPD (MAX3454E–MAX3456E),

SUS, OE, ENUM

(MAX3453E/MAX3454E)

High impedance High impedance

BD (MAX3453E/MAX3455E)

Invalid* Low

Table 2. Disable-Mode and Sharing-Mode Connections

Voltage regulator supply

MAX3453E–MAX3456E

±15kV ESD-Protected USB Transceivers

______________________________________________________________________________________ 11

Disable Mode

Connect V

BUS

to a system power supply and leave V

L

unconnected or connect to GND. D+ and D- enter a tri­state mode and V

BUS

(or V

BUS

and V

TRM

) consumes
less than 20µA of supply current. D+ and D- withstand
external signals up to +5.5V in disable mode (Table 2).

Sharing Mode

Connect VLto a system power supply and leave V

BUS

(or V

BUS

and V

TRM

) unconnected or connect to GND.
D+ and D- enter a tri-state mode, allowing other circuitry
to share the USB D+ and D- lines, and VLconsumes less
than 20µA of supply current. D+ and D- withstand
external signals up to +5.5V in sharing mode (Table 2).

Device Control

OE

OE controls the direction of communication. Drive OE
low to transfer data from the logic side to the USB side.
For OE = low, VP and VM serve as differential driver
inputs to the USB transmitter.

Drive OE high to transfer data from the USB side to the
logic side. For OE = high, VP and VM serve as single­ended receiver outputs from the USB inputs
(D+ and D-). RCV serves as a differential receiver out­put, regardless of the state of OE.

ENUM (MAX3453E/MAX3454E)

The MAX3453E/MAX3454E feature an enumerate func­tion that allows software control of USB enumeration.
USB protocol requires a 1.5kΩ pullup resistor to D+ or
D- to indicate the transmission speed to the host (see
the SPD section). The MAX3453E/MAX3454E provide
an internal 1.5kΩ pullup resistor. Disconnect the pullup
resistor from the circuit to simulate the removal of a
device from the USB. Drive ENUM low to disconnect
the internal pullup resistor. Drive ENUM high to connect
the internal pullup resistor. The SPD state (MAX3454E
only) determines whether the pullup resistor connects
to D+ or D-. For ENUM = high, the internal pullup resis­tor connects to D+ when SPD = VL(full speed) or to D­when SPD = GND (low speed). The MAX3453E only
supports full-speed operation; therefore, the pullup
resistor only connects to D+ or is disconnected.

Figure 1. Rise and Fall Times

V

OHD

V

OLD

90%

10%

90%

10%

t

FR

, t

LR

tFF, t

LF

Table 3a. Transmit Truth Table
(OE = 0, SUS = 0)

INPUTS OUTPUTS

VP

D-

OUTPUT STATE

0000X SE0

0 1 0 1 0 Logic 0

1 0 1 0 1 Logic 1

1 1 1 1 X Undefined

X = Undefined.

Table 3b. Transmit Truth Table
(

OE = 0, SUS = 1)

INPUTS OUTPUTS

D-

OUTPUT STATE

00000 SE0

0 1 0 1 0 Logic 0

1 0 1 0 0 Logic 1

1 1 1 1 0 Undefined

Table 4a. Receive Truth Table
(

OE = 1 and SUS = 0)

INPUTS OUTPUTS

D+

0000X SE0

01010 Logic 0

10101 Logic 1

1 1 1 1 X Undefined

X = Undefined.

Table 4b. Receive Truth Table
(

OE = 1 and SUS = 1)

INPUTS OUTPUTS

D+

D-

OUTPUT STATE

00000 SE0

01010 Logic 0

10100 Logic 1

11110 Undefined

VM D+

RCV

VP VM D+

RCV

D- VP VM RCV

VP VM RCV

OUTPUT STATE

MAX3453E–MAX3456E

±15kV ESD-Protected USB Transceivers

12 ______________________________________________________________________________________

SPD (MAX3454E/MAX3455E/MAX3456E)

SPD sets the transceiver speed. Connect SPD to GND
to select the low-speed data rate (1.5Mbps). Connect
SPD to VLto select the full-speed data rate (12Mbps).
The MAX3454E provides an internal pullup resistor for
selecting the bus speed. The MAX3455E and
MAX3456E require an external pullup resistor to D+ or
D- to set the bus speed. Connect the 1.5kΩ resistor
between D+ and V

TRM

to set the full-speed (12Mbps)
data rate, or connect the 1.5kΩ resistor between D- and
V

TRM

to set the low-speed (1.5Mbps) data rate.

SUS

The SUS state determines whether the MAX3453E–
MAX3456E operate in normal mode or in suspend
mode. Connect SUS to GND to enable normal opera­tion. Drive SUS high to enable suspend mode. RCV
asserts low and VP and VM remain active in suspend
mode (Tables 3 and 4). Supply current decreases in
suspend mode (see the Electrical Characteristics).

BD (MAX3453E/MAX3455E)

The push-pull bus detect (BD) output monitors V

BUS

and asserts high if V

BUS

is greater than +4.0V. BD

asserts low if V

BUS

is less than +3.6V and the

MAX3453E/MAX3455E enters sharing mode (Table 2).

V

TRM

An internal linear regulator generates the V

TRM

voltage

(+3.3V, typ). V

TRM

derives power from V

BUS

(see the

Power-Supply Configurations section). V

TRM

powers the
internal portions of the USB circuitry and provides the
pullup voltage for an external USB pullup resistor
(MAX3455E/MAX3456E). Bypass V

TRM

to GND with a
1µF ceramic capacitor as close to the device as possible.
Do not use V

TRM

to provide power to external circuitry.

D+ and D-

D+ and D- serve as bidirectional bus connections and
are ESD protected to ±15kV (Human Body Model). For

OE = low, D+ and D- serve as transmitter outputs. For
OE = high, D+ and D- serve as receiver inputs.

V

BUS

For most applications, V

BUS

connects to the V

BUS

termi­nal on the USB connector (see the Power-Supply
Configurations section). V

BUS

can also connect to an
external supply as low as +3.1V (MAX3454E/MAX3456E).
Drive V

BUS

low to enable sharing mode. Bypass V

BUS

to
GND with a 0.1µF ceramic capacitor as close to the
device as possible.

External Components

External Resistors

Proper USB operation requires two external resistors,
each 27Ω±1%, 1/8W (or greater). Install one resistor in
series between D+ of the MAX3453E–MAX3456E and
D+ on the USB connector. Install the other resistor in
series between D- of the MAX3453E–MAX3456E and D­on the USB connector (see Typical Operating Circuit).

The MAX3455E/MAX3456E require an external 1.5kΩ
pullup resistor between V

TRM

and D+ or D- to set the

bus speed.

External Capacitors

The MAX3453E–MAX3456E require three external
capacitors for proper operation. Bypass VLto GND with a

0.1µF ceramic capacitor. Bypass V

BUS

to GND with a

0.1µF ceramic capacitor. Bypass V

TRM

to GND with a
1µF (min) ceramic capacitor. Install all capacitors as
close to the device as possible.

Data Transfer

Transmitting Data to the USB

The MAX3453E–MAX3456E transmit data to the USB
differentially on D+ and D-. VP and VM serve as differ­ential input signals to the driver (Tables 3a and 3b).

Receiving Data from the USB

To receive data from the USB, drive OE high and SUS
low. Differential data received by D+ and D- appears
as a differential logic signal at RCV. Single-ended
receivers on D+ and D- drive VP and VM, respectively
(Tables 4a and 4b).

Figure 2. Timing of VP and VM to D+ and D-

VM

VP

D-

D+

t

PLH_DRV

t

PHL_DRV

V

CRS_F

, V

CRS_L

VP AND VM RISE/FALL TIMES < 4ns

MAX3453E–MAX3456E

±15kV ESD-Protected USB Transceivers

______________________________________________________________________________________ 13

Figure 3. Enable and Disable Timing, Driver

OE

D+/D-

t

PLZ_DRV

t

PZL_DRV

t

PHZ_DRV

t

PZH_DRV

VP/VM CONNECTED TO GND,
D+/D- CONNECTED TO PULLUP

VP/VM

CONNECTED TO VL,

D+/D- CONNECTED TO PULLDOWN

OE

D+/D-

Figure 4. Timing of D+ and D- to RCV, VM, and VP

+3V

0V

RCV, VM, AND VP

V

L

D+/D-

t

PLH_RCV

,

t

PLH_SE

t

PHL_RCV

,

t

PHL_SE

INPUT RISE/FALL TIME < 4ns

Figure 5. Enable and Disable Timing, Receiver

OE

VP/VM

VP/VM

t

PLZ_SE

t

PZL_SE

t

PHZ_SE

t

PZH_SE

D+/D- CONNECTED TO GND,
VP/VM CONNECTED TO PULLUP

D+/D-

CONNECTED TO +3V,

VP/VM CONNECTED TO PULLDOWN

OE

Figure 6. Test Circuits

MAX3453E–
MAX3456E

RCV, VM,

AND VP

TEST

POINT

(a) LOAD FOR RCV, VM, AND VP

MAX3453E–
MAX3456E

D+ AND D-

27Ω

15kΩ

C

L

C

L

TEST

POINT

(b) LOAD FOR D+/D-

MAX3453E–MAX3456E

±15kV ESD-Protected USB Transceivers

14 ______________________________________________________________________________________

ESD Protection

D+ and D- possess extra protection against static elec­tricity to protect the devices up to ±15kV. The ESD
structures withstand high ESD in all operating modes:
normal operation, suspend mode, and powered down.
D+ and D- provide protection to the following limits:

•±15kV using the Human Body Model

•±8kV using the Contact Discharge method specified

in IEC 61000-4-2

ESD Test Conditions

ESD performance depends on a variety of conditions.
Contact Maxim for a reliability report that documents
test setup, test methodology, and test results.

Human Body Model

Figure 7 shows the Human Body Model and Figure 8
shows the current waveform generated when dis­charged into a low impedance. This model consists of
a 100pF capacitor charged to the ESD voltage of inter­est, which then discharges into the test device through
a 1.5kΩ resistor.

IEC 61000-4-2

The IEC 61000-4-2 standard covers ESD testing and
performance of finished equipment. It does not specifi­cally refer to integrated circuits. The major difference
between tests done using the Human Body Model and
IEC 61000-4-2 is a higher peak current in IEC 61000-4­2, due to lower series resistance. Hence, the ESD with­stand voltage measured to IEC 61000-4-2 generally is
lower than that measured using the Human Body
Model. Figure 9 shows the IEC 61000-4-2 model. The
Contact Discharge method connects the probe to the
device before the probe is charged.

Machine Model

The Machine Model for ESD tests all connections using
a 200pF storage capacitor and zero discharge resis­tance. Its objective is to emulate the stress caused by
contact that occurs with handling and assembly during
manufacturing. All pins require this protection during
manufacturing, not just inputs and outputs. After PC
board assembly, the Machine Model is less relevant to
I/O ports.

Chip Information

TRANSISTOR COUNT: 873

PROCESS: BiCMOS

Figure 8. Human Body Model Current Waveform

IP 100%

90%

36.8%

t

RL

TIME

t

DL

CURRENT WAVEFORM

PEAK-TO-PEAK RINGING
(NOT DRAWN TO SCALE)

I

r

10%

0

0

AMPERES

Figure 7. Human Body ESD Test Models

CHARGE-CURRENT-

LIMIT RESISTOR

DISCHARGE

RESISTANCE

STORAGE
CAPACITOR

C

s

100pF

R

C

1MΩ

R

D

1.5kΩ

HIGH-

VOLTAGE

DC

SOURCE

DEVICE

UNDER

TEST

Figure 9. IEC 61000-4-2 ESD Test Model

CHARGE-CURRENT-

LIMIT RESISTOR

DISCHARGE

RESISTANCE

STORAGE
CAPACITOR

C

s

150pF

R

C

50MΩ to 100M

Ω

R

D

330

Ω

HIGH-

VOLTAGE

DC

SOURCE

DEVICE

UNDER

TEST

MAX3453E–MAX3456E

±15kV ESD-Protected USB Transceivers

______________________________________________________________________________________ 15

Typical Operating Circuits

MAX3453E
MAX3454E

+1.65V TO +3.6V

V

L(I/O)

V

L

ASIC

BD*

VP

VM

RCV

SPD**

PC

USB
POWER

D+

D-

15kΩ 15kΩ

GND

0.1µF

0.1µF

GND

GND

USB CABLE

D-

27Ω 1%

27Ω 1%

D+

V

BUS

V

TRM

SUS

ENUM

OE

1µF

*MAX3453E ONLY.
**MAX3454E ONLY.

MAX3455E
MAX3456E*

+1.65V TO +3.6V

V

L(I/O)

V

L

ASIC

VP

VM

RCV

BD**

SPD

PC

USB
POWER

D+

D-

15kΩ 15kΩ

GND

0.1µF

0.1µF

GND

GND

USB CABLE

D-

27Ω 1%

27Ω 1%

D+

V

BUS

V

TRM

SUS

OE

1µF

*PIN COMPATIBLE WITH MICREL MIC2550A.
**MAX3455E ONLY.
***CONNECT TO D+ FOR FULL-SPEED OPERATION. CONNECT TO D- FOR LOW-SPEED OPERATION.

1.5kΩ***

MAX3453E–MAX3456E

±15kV ESD-Protected USB Transceivers

16 ______________________________________________________________________________________

9

TOP VIEW

TSSOP

14

1

V

L

V

BUS

13

2

SPD

N.C. (ENUM*) (BD**)

12

3

RCV

V

TRM

11

4

VP

D+

10

5

VM

D-

8

7

GND

SUS

3mm x 3mm

THIN QFN

16

1

2

3

4

12

11

10

9

15 14 13

5678

N.C.

VLV

BUS

N.C.

(ENUM*)

(BD**)

V

TRM

D+

D-

OE

RCV

VP

***EXPOSED PADDLE

VM

N.C.

*MAX3454E ONLY.
**MAX3455E ONLY.
***CONNECT EXPOSED PADDLE TO GND OR LEAVE FLOATING.

SUS

N.C.

SPD

MAX3454E
MAX3455E
MAX3456E

MAX3454E
MAX3455E
MAX3456E

GND

6

N.C.

OE

3mm x 3mm

THIN QFN

16

1

2

3

4

12

11

10

9

15 14 13

5678

N.C.

VLV

BUS

BD

V

TRM

D+

D-

OE

RCV

VP

***EXPOSED PADDLE

VM

N.C.

SUS

N.C.

ENUM

MAX3453E

GND

V

BUS

BD

V

TRM

D+

VP

RCV

ENUM

V

L

D-

OE

SUS

GND

N.C.

VM

9

TSSOP

14

1

13

2

12

3

11

4

10

5

8

7

MAX3453E

6

Pin Configurations

MAX3453E–MAX3456E

±15kV ESD-Protected USB Transceivers

______________________________________________________________________________________ 17

12x16L QFN THIN.EPS

0.10 C 0.08 C

0.10 M C A B

D

D/2

E/2

E

A1

A2

A

E2

E2/2

L

k

e

(ND - 1) X e

(NE - 1) X e

D2

D2/2

b

L

e

L

C

L

e

C

L

L

C

L

C

PACKAGE OUTLINE

21-0136

2

1

G

8, 12, 16L THIN QFN, 3x3x0.8mm

MARKING

AAAA

Package Information

(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information,
go to www.maxim-ic.com/packages

.)

MAX3453E–MAX3456E

±15kV ESD-Protected USB Transceivers

18 ______________________________________________________________________________________

EXPOSED PAD VARIATIONS

1.10

T1633-1

0.95

CODES

PKG.

T1233-1

MIN.

0.95

NOM.

1.10

D2

1.25

1.10

0.95

1.25

NOM.

1.10

MAX.

1.25

MIN.

0.95

MAX.

1.25

E2

12

N

k

A2

0.25

NE

A1

ND

0

0.20 REF

-

-

3

0.0230.05

L

e

E

0.45

2.90

b

D

A

0.20

2.90

0.70

0.50 BSC.

0.55

3.00

0.65

3.10

0.25

3.00

0.75

0.30

3.10

0.80

16

0.20 REF

0.25

-

0

4

0.02

4

-

0.05

0.50 BSC.

0.30

2.90

0.40

3.00

0.20

2.90

0.70

0.25

3.00

0.75

3.10

0.50

0.80

3.10

0.30

PKG

REF. MIN.

12L 3x3

NOM. MAX. NOM.

16L 3x3

MIN. MAX.

0.35 x 45¡

PIN ID

JEDEC

WEED-1

0.35 x 45¡ WEED-2

T1233-3

1.10

1.25

0.95 1.10

0.35 x 45¡1.25 WEED-1

0.95

T1633F-3

0.65

T1633-4

0.95

0.80

0.95

0.65

0.80

1.10

1.25

0.95

1.10

0.225 x 45¡

0.95

WEED-2

0.35 x 45¡

1.25

WEED-2

T1633-2

0.95

1.10

1.25

0.95

1.10

0.35 x 45¡

1.25

WEED-2

NO

DOWN
BONDS
ALLOWED

YES

NO

YES

N/A

NO

PACKAGE OUTLINE

21-0136

2

2

G

8, 12, 16L THIN QFN, 3x3x0.8mm

YESWEED-11.25

1.100.95

0.35 x 45¡

1.25

1.10

0.95

T1233-4

T1633FH-3

0.65

0.80

0.95

0.225 x 45¡

0.65

0.80

0.95

WEED-2

N/A

NOTES:

1. DIMENSIONING & TOLERANCING CONFORM TO ASME Y14.5M-1994.

2. ALL DIMENSIONS ARE IN MILLIMETERS. ANGLES ARE IN DEGREES.

3. N IS THE TOTAL NUMBER OF TERMINALS.

4. THE TERMINAL #1 IDENTIFIER AND TERMINAL NUMBERING CONVENTION SHALL CONFORM TO
JESD 95-1 SPP-012. DETAILS OF TERMINAL #1 IDENTIFIER ARE OPTIONAL, BUT MUST BE LOCATED
WITHIN THE ZONE INDICATED. THE TERMINAL #1 IDENTIFIER MAY BE EITHER A MOLD OR
MARKED FEATURE.

5. DIMENSION b APPLIES TO METALLIZED TERMINAL AND IS MEASURED BETWEEN 0.20 mm AND 0.25 mm
FROM TERMINAL TIP.

6. ND AND NE REFER TO THE NUMBER OF TERMINALS ON EACH D AND E SIDE RESPECTIVELY.

7. DEPOPULATION IS POSSIBLE IN A SYMMETRICAL FASHION.

8. COPLANARITY APPLIES TO THE EXPOSED HEAT SINK SLUG AS WELL AS THE TERMINALS.

9. DRAWING CONFORMS TO JEDEC MO220 REVISION C.

10. MARKING IS FOR PACKAGE ORIENTATION REFERENCE ONLY.

11. NUMBER OF LEADS SHOWN ARE FOR REFERENCE ONLY.

0.25 0.30 0.35

2

0.25

0

0.20 REF

--

0.02

0.05

0.35

8

2

0.55 0.75

2.90

2.90 3.00 3.10

0.65 BSC.

3.00 3.10

8L 3x3

MIN.

0.70 0.75 0.80

NOM. MAX.

TQ833-1

1.25

0.25

0.70

0.35 x 45¡ NOWEEC

1.25

0.70

0.25

Package Information (continued)

(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information,
go to www.maxim-ic.com/packages

.)

MAX3453E–MAX3456E

±15kV ESD-Protected USB Transceivers

Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are
implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.

Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 19

© 2006 Maxim Integrated Products is a registered trademark of Maxim Integrated Products.

TSSOP4.40mm.EPS

PACKAGE OUTLINE, TSSOP 4.40mm BODY

21-0066

1

1

G

Package Information (continued)

(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information,
go to www.maxim-ic.com/packages

.)

Revision History

Pages changed at Rev1: 1, 14, 19, slide