MAXIM MAX4899E, MAX4899AE User Manual

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General Description

The MAX4899E/MAX4899AE analog multiplexers com­bine the low on-capacitance (CON) and low on-resis­tance (R

ON

) necessary for high-performance switching
applications. These devices are designed for USB 2.0
high-speed applications at 480Mbps. The MAX4899E/
MAX4899AE also handle all the requirements for USB
low- and full-speed signaling.

The MAX4899E is a dual 3:1 multiplexer whereas the
MAX4899AE is a dual 4:1 multiplexer. The MAX4899E/
MAX4899AE feature two digital inputs, C

0

and C1, to con­trol the analog signal path. Typical applications include
switching a USB connector between USB and other oper­ations such as serial communications, audio, and video.

An enable input (EN) is provided to disable all channels
and place the device into a high-impedance (off) state,
as well as reducing power consumption.

The MAX4899E/MAX4899AE operate from a 2.7V to

3.6V power-supply voltage and are protected against
+5.5V shorts to COMA- and COMA+. In addition,
COM

A

+ and COMA- are normally connected to outside
circuitry and feature ±15kV ESD protection. The
MAX4899E/MAX4899AE are available in a 3mm x 3mm,
16-pin TQFN package and operate over the -40°C to
+85°C temperature range.

Applications

Cell Phones

Digital Still Cameras

PDAs

Digital Video Cameras

MPEG-4 Players

Portable GPS

Combination Products

KVM

Features

♦ Single 2.7V to 3.6V Power-Supply Voltage

♦ Low 4Ω (typ) On-Resistance (R

ON

)

♦ -3dB Bandwidth: 425MHz

♦ Fault Tolerant to Meet Full USB 2.0 Specification

♦ COM_ Protected to ±15kV ESD Protection per

Human Body Model (MIL-STD-883; Method 3015)

♦ Low Operating Current (200µA), Ultra-Low

Quiescent Current (3.0µA max) in Standby Mode

♦ Low Threshold Eliminates the Need for

Translators in 1.8V Low Voltage Systems

♦ Tiny 16-Pin, 3mm x 3mm, Lead-Free TQFN Package

MAX4899E/MAX4899AE

USB 2.0 High-Speed, Fault-Tolerant 3:1, 4:1

Multiplexers

________________________________________________________________ Maxim Integrated Products 1

19-0616; Rev 0; 7/06

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.

EVALUATION KIT

AVAILABLE

Ordering Information/Selector Guide

Note: All devices are specified over the -40°C to +85°C operating temperature range.

+Denotes lead-free package.
*EP = Exposed paddle.

TIME (ns)

NOTE: UI = 2.08ns
MASK = USB 2.0 HIGH SPEED

2.01.81.4 1.60.4 0.6 0.8 1.0 1.20.2

-0.4

-0.3

-0.2

-0.1

0

0.1

0.2

0.3

0.4

0.5

-0.5

0

COM

A

+ AND COM

A

- (V)

Eye Diagram

Pin Configurations appear at end of data sheet.

MAX4899EETE+ 16 TQFN-EP* DUAL 3:1 AEY T1633-4

MAX4899AEETE+ 16 TQFN-EP* DUAL 4:1 AEZ T1633-4

PART PIN-PACKAGE MUX CONFIGURATION TOP MARK PKG CODE

MAX4899E/MAX4899AE

USB 2.0 High-Speed, Fault-Tolerant 3:1, 4:1
Multiplexers

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.

(All Voltages Referenced to GND.)

V+ .............................................................................-0.3V to +4V

QP, EN, C

0

, C1, (Note 1) ..........................................-0.3V to +4V

COM

A+

, COMA_, USB0+, USB0-, USB1+, USB1-, USB2+,

USB2-, USB3+, USB3- ......................................-0.3V to +5.5V

Continuous Current (COM

A

_ to USB_)...........................±120mA

Peak Current (COM

A

_ to USB_)

(pulsed at 1ms, 10% duty cycle).................................±240mA

Continuous Power Dissipation (T

A

= +70°C)

16-Pin TQFN (derate 20.8mW/°C above +70°C) ........1667mW

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

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

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

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

ELECTRICAL CHARACTERISTICS

(V+ = +2.7V to +3.6V, TA= -40°C to +85°C, QP = low, EN = low, unless otherwise noted. Typical values are at V+ = +3.3V and TA=
+25°C.) (Note 2)

)

Note 1: Signals exceeding GND are clamped by internal diodes. Limit forward-diode current to maximum current rating.

ANALOG SWITCH (COMA_, USB__)

On-Resistance R

On-Resistance Match Between
Channels

On-Resistance Flatness R

Off-Leakage Current I

On-Leakage Current I

Quiescent Supply Current I+

Fault-Protection Trip Threshold V

ESD PROTECTION

COMA+, COMA- Human Body Model ±15 kV

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

ON

ΔR

ON

FLAT (ON

L(OFF)

L(ON)

FP

V+ = 2.7V, I

-10mA, V

COMA_

1.5V, QP = low

V+ = 2.7V, I

-10mA, V

COM_

1.5V, 2.7V, QP = low

V+ = 2.7V, I

-10mA, V

COMA_

1.5V, QP = high

V+ = 3.0V, I

-10mA, V

COMA_

1.5V, QP = high

V+ = 2.7V, I

-10mA, V

COMA_

1.5V, 2.7V

V+ = 2.7V, I

1.5V, 2.7V

V+ = 3.6V, V

V+ = 3.6V, V

V+ = 3.6V, C
0 or V+

V+ = 3.3V 3.6 3.9 4.2 V

COMA_

= 0V,

COMA_

= 0V,

COMA_

= 0V,

COMA_

= 0V,

COMA_

= 0V,

COMA_

COMA_

COMA_

= C1 =

0

=

TA = +25°C 4 5

T

= -40°C to +85°C 6

A

=

TA = +25°C 4 7

= -40°C to +85°C 8

T

A

=

TA = +25°C 8 17

T

= -40°C to +85°C 18

A

=

TA = +25°C 4 12

T

= -40°C to +85°C 13

A

=

TA = +25°C 0.5 0.8

= -40°C to +85°C 1.0

T

A

= -10mA, V

= V

USB__

= V

USB__

= 0V,

COMA_

= 0.3V, 3.3V -1 +1 µA

= 0.3V, 3.3V -1 +1 µA

QP = low 250 600
QP = high 3

0.5 1.1 Ω

Ω

Ω

µA

MAX4899E/MAX4899AE

USB 2.0 High-Speed, Fault-Tolerant 3:1, 4:1

Multiplexers

_______________________________________________________________________________________ 3

ELECTRICAL CHARACTERISTICS (continued)

(V+ = +2.7V to +3.6V, TA= -40°C to +85°C, QP = low, EN = low, unless otherwise noted. Typical values are at V+ = +3.3V and TA=
+25°C.) (Note 2)

Note 2: Limits at -40°C are guaranteed by design.
Note 3: Guaranteed by design.
Note 4: Charge-pump noise is specified as a peak-to-peak value.

SWITCH AC PERFORMANCE (Note 3)

On-Loss ON

Crosstalk

Off-Isolation V

Charge-Pump Noise V

Bandwidth -3dB BW RS = RL = unbalanced 50Ω 425 MHz

Off-Capacitance C

On-Capacitance C

Propagation Delay t

Output Skew Same Switch t

Fault-Protection Response Time t

Fault-Protection Recovery Time t

Charge Injection Q V

Enable Turn-On Time t

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

f = 10MHz, 0 < VIN < 1V, Figure 1 0.5 dB

,

f = 50MHz, Figure 1 -50 dB

f = 50MHz, Figure 1 -45 dB

COMA_, USB_, RL = RS = 50Ω (Note 4) 100 µV

QP

f = 1MHz, COMA_, USB_, Figure 2 10.5 pF

f = 1MHz, COMA_, USB_, Figure 2 15 pF

ON

RL = RS = 50Ω, Figure 3 200 ps

Skew between opposite transitions in same
switch, Figure 3

V
50Ω, C

V
50Ω, C

V

= 0V to 5V to V

COMA_

= 10pF, Figure 4

L

= 5V to 3V to V

COMA_

= 10pF, Figure 4

L

= 0, CL = 1000pF, Figure 5 25 pC

GEN

= V + , RL = 50Ω , C L = 10p F, Fi g ur e 6 2.8 µs

U S B 0+

USB__

USB__

= 2.5V, RL =

= 1.5V, RL =

100 ps

1µs

1µs

V

V

LOSS

CT1

DCT1

ISO

OFF

PD

SK

FP

FPR

ON

Enable Turn-Off Time t

Address Transition Time t

Total Harmonic Distortion Plus
Noise

SWITCH LOGIC (QP, EN, C0, C1)

Logic-Input Voltage Low V

Logic-Input Voltage High V

Input Logic Hysteresis V

Input Leakage Current I

TRANS

THD+N

OFF

HYST

LEAK

V

= V + , RL = 50Ω , C L = 10p F, Fi g ur e 6 3 ns

U S B 0+

V

= V + , RL = 50Ω , C L = 10p F, Fi g ur e 7 1.2 µs

U S B 0+

f = 20Hz to 20kHz, V
600Ω

IL

IH

V+ = 3.6V, C0 = 0 or V+, C1 = 0 or V+ -1 1 µA

COMA_

= 1V

P-P

, RL =

0.02 %

0.4 V

1.4 V

100 mV

MAX4899E/MAX4899AE

USB 2.0 High-Speed, Fault-Tolerant 3:1, 4:1
Multiplexers

4 _______________________________________________________________________________________

Typical Operating Characteristics

(V+ = 3.3V, QP = EN = low, TA= +25°C, unless otherwise noted.)

2.80

2.86

2.84

2.82

2.88

2.90

2.92

2.94

2.96

2.98

3.00

01.20.6 1.8 2.4 3.0 3.6

ON-RESISTANCE vs. V

COM

MAX4899E toc01

V

COM

(V)

R

ON

(Ω)

V+ = 2.7V

V+ = 3.3V

V+ = 3.6V

2.0

2.2

2.4

2.6

2.8

3.0

3.2

3.4

3.6

0 1.1 2.2 3.3

ON-RESISTANCE vs. V

COM

MAX4899E toc02

V

COM

(V)

R

ON

(Ω)

TA = +85°C

TA = +25°C

TA = -40°C

1500

1000

500

0

-500

3000
2500
2000

3500

4000

5000

4500

5500

-40 -15 10 35 60 85

LEAKAGE CURRENT vs. TEMPERATURE

MAX4899E toc03

TEMPERATURE (°C)

LEAKAGE CURRENT (pA)

COM 0N-LEAKAGE

COM 0FF-LEAKAGE

V+ = 3.6V

0

10

5

20

15

25

30

0 1.1 2.2 3.3

CHARGE INJECTION vs. V

COM

MAX4899E toc04

V

COM

(V)

CHARGE INJECTION (pC)

CL = 1000pF

100

160

140

120

180

200

220

240

260

280

300

-40 10-15 35 60 85

QUIESCENT SUPPLY CURRENT

vs. TEMPERATURE

MAX4899E toc05

TEMPERATURE (°C)

QUIESCENT SUPPLY CURRENT (μA)

V+ = 2.7V

V+ = 3.6V

V+ = 3.3V

0

0.3

0.2

0.1

0.4

0.5

0.6

0.7

0.8

0.9

1.0

2.7 3.0

3.3

3.6

LOGIC THRESHOLD vs. SUPPLY VOLTAGE

MAX4899E toc06

SUPPLY VOLTAGE (V)

LOGIC THRESHOLD (V)

V

IH

V

IL

FREQUENCY RESPONSE

MAX4899E toc07

FREQUENCY (MHz)

LOSS (dB)

10010

-90

-80

-70

-60

-50

-40

-30

-20

-10

0

-100
11000

ON-RESPONSE

OFF-ISOLATION

CROSSTALK

TOTAL HARMONIC DISTORTION

PLUS NOISE vs. FREQUENCY

MAX4899E toc08

FREQUENCY (Hz)

THD+N (%)

10k1k10010 100k

0.1

0.01

RL = 600

Ω

EYE DIAGRAM

TIME (ns)

2.01.81.4 1.60.4 0.6 0.8 1.0 1.20.2

-0.4

-0.3

-0.2

-0.1

0

0.1

0.2

0.3

0.4

0.5

-0.5

0

COM

A

+ AND COM

A

- (V)

MAX4899E toc09

MAX4899E/MAX4899AE

USB 2.0 High-Speed, Fault-Tolerant 3:1, 4:1

Multiplexers

_______________________________________________________________________________________ 5

Pin Description

PIN

MAX4899E MAX4899AE

1 1 GND Ground

2 2 COMA+ Analog Switch Common D+ Terminal

3 3 COMA- Analog Switch Common D- Terminal

44V+

55C

66C

7, 8 — N.C. No Connection. Not internally connected.

— 7 USB3- Analog Switch 3 D- Terminal

— 8 USB3+ Analog Switch 3 D+ Terminal

9 9 USB2- Analog Switch 2 D- Terminal

10 10 USB2+ Analog Switch 2 D+ Terminal

11 11 USB1+ Analog Switch 1 D+ Terminal

12 12 USB1- Analog Switch 1 D- Terminal

13 13 USB0+ Analog Switch 0 D+ Terminal

14 14 USB0- Analog Switch 0 D- Terminal

15 15 EN

NAME FUNCTION

Positive Supply-Voltage Input. Connect V+ to a 2.7V to 3.6V supply voltage. Bypass V+
to GND with a 0.1µF capacitor placed as close as possible to the device.

Digital Control Input 1. C1 and C0 control the analog signal path as shown in the

1

Functional Diagrams section.

Digital Control Input 0. C1 and C0 control the analog signal path as shown in the

0

Functional Diagrams section.

Active-Low Enable Input. For normal operation, drive EN low. Drive EN high to place all
channels in a high-impedance state. The internal charge pump is turned off when EN is
a logic-high.

Active-Low Charge-Pump Enable Input. Drive QP low for normal operation. Drive QP

16 16 QP

— — EP Exposed Paddle. Connect EP to GND.

high to disable the charge pump with the switches still active at a reduced analog signal
range and higher R

ON

.