MAXIM MAX4983E, MAX4984E Technical data

General Description

The MAX4983E/MAX4984E are high ESD-protected
analog switches that combine the low on-capacitance
and low on-resistance necessary for high-performance
switching applications. COM1 and COM2 are protected
against ±15kV ESD without latchup or damage. The
devices are ideal for USB 2.0 Hi-Speed applications at
480Mbps. The switches also handle all the require­ments for USB low- and full-speed signaling.

The MAX4983E/MAX4984E double-pole/double-throw
(DPDT) switches are fully specified to operate from a
single +2.8V to +5.5V power supply and are protected
against a +5.5V short to COM1 and COM2. This feature
makes the MAX4983E/MAX4984E fully compliant with
the USB 2.0 specification of VBUS fault protection. The
devices feature low-threshold-voltage logic inputs, per­mitting them to be used with low I/O voltage systems.
The MAX4983E features an active-low enable input
(EN) that when driven high sets the device in shutdown
mode. The MAX4984E features an active-high enable
input (EN) that when driven low sets the device in shut­down mode. When the device is in shutdown mode, the
quiescent supply current is reduced to 0.1µA.

The MAX4983E/MAX4984E are available in a space­saving, 10-pin, 1.4mm x 1.8mm UTQFN package, and
operate over a -40°C to +85°C temperature range.

Applications

Features

♦ USB Hi-Speed Switching

♦ ESD Protection on COM

±15kV Human Body Model
±15kV IEC 61000-4-2 Air Gap
±8kV IEC 61000-4-2 Contact

♦ Power-Supply Range: +2.8V to +5.5V

♦ Low 5Ω (typ) On-Resistance (R

ON

)

♦ -3dB Bandwidth: 950MHz (typ)

♦ Compatible with Logic I/O Down to 1.4V

♦ COM Analog Inputs Fault Protected Against

Shorts to +5.5V

♦ Low Supply Current 0.6µA (typ)

♦ Enable Input:

Active-Low (EN) MAX4983E
Active-High (EN) MAX4984E

♦ Small 10-Pin, 1.4mm x 1.8mm UTQFN

MAX4983E/MAX4984E

Hi-Speed USB 2.0 Switches

with ±15kV ESD

________________________________________________________________

Maxim Integrated Products

1

19-4035; Rev 2; 9/08

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

EVALUATION KIT

AVAILABLE

Pin Configuration

Cell Phones

PDAs

Digital Still Cameras

GPS

Notebook Computers

Video Switching

Bus Switches

Eye Diagram

Note: All devices operate over the -40°C to +85°C extended
temperature range.

+

Denotes a lead-free package.

Ordering Information

PART PIN-PACKAGE TOP MARK

MAX4983EEVB+ 10 Ultra-Thin QFN AAA

MAX4984EEVB+ 10 Ultra-Thin QFN AAB

NO2

NC2

7 6

8

MAX4983E/

9

MAX4984E

1 2

NC1

UTQFN

NO1

5

COM2

4

GND

3

COM1

MAX4983E
MAX4984E

TOP VIEW

EN (EN)

V

USB 2.0

Hi-SPEED
TRANSMIT
TEMPLATE

(EN) FOR MAX4984E ONLY.

CC

10

CB

MAX4983E/MAX4984E

Hi-Speed USB 2.0 Switches
with ±15kV ESD

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

(VCC= +2.8V to +5.5V, TA= -40°C to +85°C, unless otherwise noted. Typical values are at VCC= +3.0V, TA= +25°C.) (Note 2)

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

CC

, COM_, NO_, NC_, EN, EN, CB.................... -0.3V to +6.0V

Continuous Current into Any Terminal............................. ±30mA

Continuous Power Dissipation (T

A

= +70°C)

10-Pin UTQFN (derate 6.9mW/°C above +70°C)........ 559mW

Junction-to-Case Thermal Resistance (

θ

JC

) (Note 1)

10-Pin UTQFN ...........................................................20.1°C/W

Junction-to-Ambient Thermal Resistance (

θ

JA

) (Note 1)

10-Pin UTQFN ........................................................ 143.1°C/W

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

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

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

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

)

)

Note 1: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-

layer board. For detailed information on package thermal considerations, refer to www.maxim-ic.com/thermal-tutorial

.

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

O p er ati ng P ow er - S up p l y Rang eV

Supply Current I

Shutdown Supply Current I

Increase in Supply Current
with V

, VEN Voltage

CB

Analog Signal Range

Fault-Protection Trip Threshold V

On-Resistance R

On-Resistance Match Between
Channels

On-Resistance Flatness R

Off-Leakage Current I

On-Leakage Current I

CC

SHDN

V

COM

V

ΔR

FLAT

COM(OFF

COM(ON

CC

, VNO,

NC

FP

ON

ON

VCB = 0V or VCC,
V

= 0V or VEN = V

EN

VCC = 3.0V 0.6 1.5

CC

VCC = 5.5V 3 6.5

Switch disabled (VEN = VCC or VEN = 0V) 0.1 µA

≤ VIL or VIH ≤ VCB ≤ VCC or 0 ≤ V

0 ≤ V

CB

≤ VIL or VIH ≤ VEN ≤ V

V

= VCC or VEN = 0V (Note 3) 0 V

EN

CC

EN

COM_ only, TA = +25°C

V

= 0V to V

COM

V

= 3.6V, VCC = 3.0V 5.5

COM

VCC = 3.0V, V

VCC = 3.0V, V

VCC = 4.5V, V

, VNC = 4.5V or 0V

V

NO

VCC = 5.5V, V

, VNC with 50µA sink current to GND

V

NO

VCC = 5.5V, V

, VNC = unconnected

V

NO

CC

= 2V (Note 4) 0.1 1 Ω

COM

= 0V to VCC (Note 5) 0.1 Ω

COM

= 0V or 4.5V,

COM

= 0V or 5.5V,

COM

= 0V or 5.5V,

COM

AC PERFORMANCE

On-Channel -3dB Bandwidth BW RL = RS = 50Ω, signal = 0dBm 950 MHz

f = 10MHz -48

f = 250MHz -20Off-Isolation V

f = 500MHz -17

ISO

VNO, VNC = 0dBm,

= RS = 50Ω

R

L

(Figure 1)

2.8 5.5 V

V

+

CC

0.6

-250 +250 nA

-250 +250 nA

2µA

CC

VCC +

0.8

V

+

C C

1

510

180 µA

µA

V

V

Ω

dB

MAX4983E/MAX4984E

Hi-Speed USB 2.0 Switches

with ±15kV ESD

_______________________________________________________________________________________ 3

ELECTRICAL CHARACTERISTICS (continued)

(VCC= +2.8V to +5.5V, TA= -40°C to +85°C, unless otherwise noted. Typical values are at VCC= +3.0V, TA= +25°C.) (Note 2)

)

)

)

)

Note 2: All devices are 100% production tested at TA= +25°C. All temperature limits are guaranteed by design.
Note 3: The switch turns off for voltages above V

FP

, protecting downstream circuits in case of a fault condition.

Note 4: ΔR

ON(MAX)

= ABS(R

ON(CH1)

- R

ON(CH2)

).

Note 5: Flatness is defined as the difference between the maximum and minimum value of on-resistance, as measured over specified

analog signal ranges.

Note 6: Between any two switches.
Note 7: Switch off-capacitance, switch on-capacitance, and output skew between switches are not production tested; guaranteed by

design.

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

VNO, VNC = 0dBm,

= RS = 50Ω,

CT

R

L

Figure 1

LOGIC INPUT

Input Logic-High V

Input Logic-Low V

Input Leakage Current I

IH

IL

IN

DYNAMIC

V

or V

Turn-On Time t

Turn-Off Time t

Propagation Delay t

PLH

Fault Protection Response
Time

Fault Protection Recovery
Time

Output Skew Between
Switches

C

NO_ or NC_ Off-Capacitance

COM Off-Capacitance
(Figure 5, Note 7)

COM On-Capacitance
(Figure 5, Note 7)

Total Harmonic Distortion Plus
Noise

NO(OFF

C

C

COM(OFF

C

COM(ON

THD+N

ON

OFF

, t

PHLRL

t

FP

t

FPR

t

SK

NC(OFF

N O

V

EN

V

N O

V

E N

= RS = 50Ω, Figure 3 100 ps

V

COM

V

CC

V

COM

V

CC

S kew b etw een sw i tch 1 and 2, RL = RS = 50Ω ,
( Fi g ur e 3, N ote 7)

or

f = 1MHz (Figure 5, Note 7) 2 pF

f = 1MHz 5.5

f = 240MHz 4.8

f = 1MHz 6.5

f = 240MHz 5.5

V

COM

f = 20Hz to 20kHz

= 1.5V , RL = 300Ω , C L = 35p F,

N C

= V

to 0V or V

C C

or V

= 1.5V , RL = 300Ω , C L = 35p F,

N C

= V

to 0V or V EN = 0V to V

C C

= 0V to 5V step, RL = RS = 50Ω,

= 3.3V (Figure 4)

= 5V to 0V step, RL = RS = 50Ω,

= 3.3V (Figure 4)

= 1V

P-P

, V

BIAS

ESD PROTECTION

Human Body Model ±15

IEC 61000-4-2 Air-Gap Discharge ±15COM1, COM2

IEC 61000-4-2 Contact Discharge ±8

All Pins Human Body Model ±2

f = 10MHz -73

f = 250MHz -54Crosstalk (Note 6) V

f = 500MHz -33

= 0V to V

E N

( Fi g ur e 2)

C C

( Fi g ur e 2)

C C

= 1V, RL = RS = 50Ω,

1.4 V

0.5 V

-250 +250 nA

20 100 µs

15µs

0.5 5.0 µs

100 µs

40 ps

0.03 %

dB

pF

pF

kV

MAX4983E/MAX4984E

Hi-Speed USB 2.0 Switches
with ±15kV ESD

4 _______________________________________________________________________________________

Test Circuits/Timing Diagrams

Figure 1. Off-Isolation and Crosstalk

Figure 2. Switching Time

NETWORK

ANALYZER

0V OR V

50Ω

V

CB

CC

NC1

MAX4983E/

MAX4984E

COM1

NO1*

IN

V

OUT

50Ω

MEAS REF

50Ω 50Ω

V

OUT

V

IN

V

OUT

V

IN

50Ω

OFF-ISOLATION = 20log

CROSSTALK = 20log

SWITCH IS ENABLED.
MEASUREMENTS ARE STANDARDIZED AGAINST SHORTS AT IC TERMINALS.
OFF-ISOLATION IS MEASURED BETWEEN COM_ AND "OFF" NO_ OR NC_ TERMINAL ON EACH SWITCH.
CROSSTALK IS MEASURED FROM ONE CHANNEL TO THE OTHER CHANNEL.
SIGNAL DIRECTION THROUGH SWITCH IS REVERSED; WORST VALUES ARE RECORDED.

MAX4983E/
MAX4984E

COM

R

L

L

)

ON

LOGIC
INPUT

NO

V

IN_

OR NC

EN (EN)

CL INCLUDES FIXTURE AND STRAY CAPACITANCE.

V
RL + R

OUT

= V

IN_ (

R

*FOR CROSSTALK THIS PIN IS NO2.
NC2 AND COM2 ARE OPEN.

V

IH

LOGIC
INPUT

V

V

OUT

C

L

SWITCH

OUTPUT

IL

0V

50%

V

OUT

0.9 x V

0UT

t

ON

IN DEPENDS ON SWITCH CONFIGURATION;
INPUT POLARITY DETERMINED BY SENSE OF SWITCH.

tR < 5ns
tF < 5ns

t

OFF

0.1 x V

OUT