MAXIM MAX4638, MAX4639 User Manual

General Description

The MAX4638/MAX4639 are single 8:1 and dual 4:1
CMOS analog multiplexers/demultiplexers (muxes/
demuxes). Each mux operates from a single +1.8V to
+5V supply or dual ±2.5V supplies. These devices fea­ture 3.5Ω on-resistance (RON) when powered with a
single +5V supply and have -75dB off-isolation and

-85dB crosstalk from the output to each off channel.
The switching times are 18ns tONand 7ns t

OFF

. They

feature a -3dB 85MHz bandwidth and a guaranteed

0.25nA leakage current at +25°C.
A +1.8V to +5.5V operating range makes the MAX4638/

MAX4639 ideal for battery-powered, portable instru­ments. All channels guarantee break-before-make
switching. These parts feature bidirectional operation
and can handle Rail-to-Rail®analog signals. All control
inputs are TTL/CMOS-logic compatible. Decoding is in
standard BCD format, and an enable input is provided to
simplify cascading of devices. These devices are avail­able in small 16-pin thin QFN, TSSOP, and SO packages,
as well as a 20-pin thin QFN package.

Applications

Automatic Test Equipment
Low-Voltage Data-Acquisition Systems
Audio and Video Signal Routing
Medical Equipment
Battery-Powered Equipment
Relay Replacement

Features

♦ Guaranteed R

ON

3.5Ω (+5V or ±2.5V Supplies)
6Ω (+3V Supply)

♦ Guaranteed 0.4Ω RONMatch Between Channels
♦ Guaranteed 1Ω R

ON

Flatness Over Signal Range

♦ Guaranteed Low Leakage Currents

0.25nA at +25°C

♦ Switching Times: t

ON

= 18ns, t

OFF

= 7ns

♦ +1.8V to +5.5V Single-Supply Operation

±2.5V Dual-Supply Operation

♦ Rail-to-Rail Signal Handling
♦ TTL/CMOS-Logic Compatible
♦ Crosstalk: -80dB (1MHz)
♦ Off-Isolation: -60dB (10MHz)

MAX4638/MAX4639

3.5Ω, Single 8:1 and Dual 4:1,

Low-Voltage Analog Multiplexers

________________________________________________________________ Maxim Integrated Products 1

19-1782; Rev 2; 2/04

Ordering Information

Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd.

PART TEMP RANGE PIN-PACKAGE

-40°C to +85°C

16 Thin QFN (4 ✕ 4)

-40°C to +85°C 16 TSSOP

-40°C to +85°C 16 SO

-40°C to +85°C

20 Thin QFN (4 ✕ 4)

Pin Configurations/Functional Diagrams

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 continued at end of data sheet.

MAX4638ETE
MAX4638EUE
MAX4638ESE
MAX4638ETP

TOP VIEW

MAX4638

1

A0

2

EN

LOGIC

3

V-

NO1

4

NO2

5

NO3

6

NO4

7

COM

8

TSSOP/SO

A1

16

A2

15

GND

14

V+

13

12

NO5

NO6

11

NO7

10

NO8

9

A0

EN

V-

NO1A

NO2A

NO3A

NO4A

COMA

MAX4639

1

2

3

4

5

6

7

8

TSSOP/SO

LOGIC

A1

16

GND

15

V+

14

NO1B

13

12

NO2B

NO3B

11

NO4B

10

COMB

9

MAX4638/MAX4639

3.5Ω, Single 8:1 and Dual 4:1,
Low-Voltage Analog Multiplexers

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS—+5V Single Supply

(V+ = +5V ±10%, V- = 0, VIH= +2.4V, VIL= +0.8V, TA= T

MIN

to T

MAX

, unless otherwise noted. Typical values are at TA= +25°C.) (Note 9)

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.

(Voltages Referenced to GND)

V+ to V- .................................................................................+6V

V+, A_, EN................................................................-0.3V to +6V

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

NO_, COM_ (Note 1) ................................... -0.3V to (V+ + 0.3V)

Continuous Current A_, EN ............................................. ±30mA

Continuous Current NO_, COM_ .................................. ±100mA

Peak Current (NO_, COM_)

(pulsed at 1ms, 10% duty cycle) .............................. ±200mA

Continuous Power Dissipation (T

A

= +70°C)

16-Pin Thin QFN (derate 16.9mW/°C above +70°C)....1349mW

16-Pin TSSOP (derate 5.7mW/°C above +70°C)............457mW

16-Pin SO (derate 8.70mW/°C above +70°C) ...............696mW

20-Pin Thin QFN (derate 16.9mW/°C above +70°C)....1349mW

Operating Temperature Range

MAX463_E_ E ................................................-40°C to +85°C

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

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

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

Note 1: Signals on COM_, NO_ exceeding V+ or V- are clamped by internal diodes. A_ and EN are clamped only to V- and can

exceed V+ up to their maximum ratings. Limit forward-diode current to maximum current rating.

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

(

MAX

UNITS

ANALOG SWITCH

Analog Signal Range

V

COM_

,

V

NO_

0V+V

TA = +25°C 2.5 3.5

On-Resistance R

ON

V

N O_

= +3.5V

4.5

Ω

TA = +25°C 0.1 0.4

On-Resistance Match
Between Channels (Notes 3, 8)

∆R

ON

V

N O_

= +3.5V

0.5

Ω

TA = +25°C

1

On-Resistance Flatness (Note 4)

)

V

N O_

= +1V , + 2V , + 3.5V

1.2

Ω

TA = +25°C

NO_ Off-Leakage Current
(Note 5)

)

V + = + 5.5V ; V

C OM _

= +1V ,

nA

TA = +25°C

COM_ Off-Leakage Current
(Note 5)

)

V + = + 5.5V ; V

C OM_

= +1V ,

nA

TA = +25°C

COM_ On-Leakage Current
(Note 5)

)

V + = + 5.5V ; V

C OM_

= +1V ,

+ 4.5V ; V

N O_

= +1V , + 4.5V ,

or fl oati ng

nA

DIGITAL I/O

Input Logic High V

IH

2.4 V

Input Logic Low V

IL

0.8 V

Input Leakage Current

I

IH

, I

IL

V

IN_

= 0 or V+

0.1 µA

Digital Input Capacitance C

IN

2pF

DYNAMIC

TA = +25°C1418

Transition Time (Note 5)

RL = 100Ω, C

L = 35p F,

V

N O1 = + 3V or 0,

20

ns

N o t e 2 )

R

FLAT(ON

I

NO_(OFF

I

COM_(OFF

I

COM_(ON

t

TRANS

V + = + 4.5V , I

V + = + 4.5V , I

V + = + 4.5V ; I

+ 4.5V ; V

N O_

+ 4.5V ; V

N O_

V

= 0 or + 3V , Fi g ur e 2

N O8

= 10m A,

C OM_

TA = T

= 10m A,

C OM_

TA = T

= 10m A;

C OM_

TA = T

= +4.5V, + 1V

T

A

= +4.5V, + 1V

T

A

TA = T

to T

MIN

MAX

to T

MIN

MAX

0.75

to T

MIN

MAX

-0.25 ±0.01 0.25

= T

MIN

to T

-0.35 0.35

MAX

-0.25 ±0.01 0.25

= T

MIN

to T

-0.75 0.75

MAX

-0.25 ±0.01 0.25

MIN

to T

-0.75 0.75

MAX

-0.1 0.005

T

= T

MIN

to T

MAX

A

MAX4638/MAX4639

3.5Ω, Single 8:1 and Dual 4:1,

Low-Voltage Analog Multiplexers

_______________________________________________________________________________________ 3

ELECTRICAL CHARACTERISTICS—+5V Single Supply (continued)

(V+ = +5V ±10%, V- = 0, VIH= +2.4V, VIL= +0.8V, TA= T

MIN

to T

MAX

, unless otherwise noted. Typical values are at TA= +25°C.) (Note 9)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

(

MAX

UNITS

TA = +25°C8

Break-Before-Make (Note 5) t

BBM

V

NO_

= +3V, Figure 3

1

ns

TA = +25°C1418

Enable Turn-On Time (Note 5)

)

V

NO1

= +3V, V

NO2

to

V

NO8

= 0, Figure 4

20

ns

TA = +25°C57

Enable Turn-Off Time (Note 5)

)

V

NO1

= +3V, V

NO2

to

V

NO8

= 0, Figure 4

8

ns

TA = +25°C50

On-Channel -3dB Bandwidth BW

S i g nal =
0d Bm ,
C L = 5p F,
50Ω i n and

TA = +25°C85

MHz

Charge Injection Q

C L = 1.0nF, Fig ur e 5

T

A

= +25°C13pC

NO_ Off-Capacitance

)

V

NO_

= 0V, f = 1MHz,

Figure 8

T

A

= +25°C9pF

TA = +25°C40

COM_ Off-Capacitance

f = 1MHz,
Figure 8

TA = +25°C20

pF

TA = +25°C54

Switch On-Capacitance C

(ON)

V

COM_

=

f = 1MHz,
Figure 8

TA = +25°C34

pF

C L = 5p F, R

L

= 50Ω,

f = 1M H z, V

N O_

=

1V

RM S

, Fi g ur e 6

T

A

= +25°C -55

Off-Isolation (Note 6) V

ISO

C L = 5p F, R

L

= 50Ω,

f = 10M H z, V

N O

_ =

1V

RM S

, Fi g ur e 6

T

A

= +25°C -75

dB

C L = 5p F, R

L

= 50Ω,

f = 10M H z, V

N O

_=

1V

RM S

, Fi g ur e 7

T

A

= +25°C -65

Crosstalk (Note 7) V

CT

C L = 5p F, R

L

= 50Ω,

f = 1M H z, V

N O

_ =

1V

R M S

, Fi g ur e 7

T

A

= +25°C -85

dB

Total Harmonic Distortion THD

R

L

= 600Ω,

R

FLAT(ON)/RL

TA = +25°C 0.5 %

SUPPLY

Positive Supply Current I+ V+ = +5.5V, V

IN

= 0 or V+

1.0 µA

t

ON(EN

t

OFF(EN

C

NO_(OFF

C

C OM_( OFF)

RL = 100Ω, CL = 35pF,

RL = 100Ω, CL = 35pF,

RL = 100Ω, CL = 35pF,

MAX4638

out, Fi g ur e 6

V

= + 2.5V , R

GE N

MAX4639

V

= 0V ,

C OM_

MAX4638

MAX4639

V

NO_

= 0V,

MAX4638

MAX4639

N o t e 2 )

TA = T

TA = T

TA = T

= 0,

GE N

MIN

MIN

MIN

to T

to T

to T

MAX

MAX

MAX

0.001

MAX4638/MAX4639

3.5Ω, Single 8:1 and Dual 4:1,
Low-Voltage Analog Multiplexers

4 _______________________________________________________________________________________

ELECTRICAL CHARACTERISTICS—+3.0V Single Supply

(V+ = +2.7V to +3.3V, V- = 0, VIH= +2.0V, VIL= +0.4V, TA= T

MIN

to T

MAX

, unless otherwise noted. Typical values are at V+ = +3V

and T

A

= +25°C.) (Note 9)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

(

)

MAX

UNITS

ANALOG SWITCH

Analog Signal Range

V

COM_

,

V

NO_

0V+V

TA = +25°C 4.5 6

On-Resistance R

ON

I

COM_

= 10mA,

V

NO_

= +1.7V

T

A

= T

MIN

to T

MAX

8

Ω

TA = +25°C

0.6

On-Resistance Match
Between Channels (Notes 3, 8)

∆R

ON

I

COM_

= 10mA,

V

NO_

= +1.7V

T

A

= T

MIN

to T

MAX

0.8

Ω

TA = +25°C12

On-Resistance Flatness (Note 4)

)

I

C OM _

= 10m A;

V

N O_

= + 1.5V , + 1.7V ,

+ 1.9V

T

A

= T

MIN

to T

MAX

2.5

Ω

TA = +25°C

NO_ Off-Leakage Current
(Note 5)

)

V+ = +3.3V;
V

COM_

= +1V, +3V;

V

NO_

= +3V, +1V

T

A

= T

MIN

to T

MAX

nA

TA = +25°C

COM_ Off-Leakage Current
(Note 5)

)

V+ = +3.3V;
V

COM_

= +1V, +3V;

V

NO_

= +3V, +1V

T

A

= T

MIN

to T

MAX

nA

TA = +25°C

COM_ On-Leakage Current
(Note 5)

)

V+ = +3.3V; V

COM_

= +1V, +3V; V

NO_

=

TA = T

MIN

to T

MAX

nA

DIGITAL I/O

Input Logic High V

IH

2.0 V

Input Logic Low V

IL

0.4 V

Input Leakage Current IIH, I

IL

V

IN_

= 0 or V+

0.1 µA

Digital Input Capacitance C

IN

2pF

DYNAMIC

TA = +25°C1620

Transition Time (Note 5)

V

NO_

= +2V, CL = 35pF,

R

L

= 100Ω, Figure 2

24

ns

TA = +25°C8

Break-Before-Make (Note 5) t

BBM

R

L

= 100Ω, Figure 3

1

ns

TA = +25°C1520

Enable Turn-On Time (Note 5)

)

V

NO_

= +2V, CL = 35pF,

R

L

= 100Ω, Figure 4

24

ns

TA = +25°C59

Enable Turn-Off Time (Note 5)

)

V

NO_

= +2V, CL = 35pF,

R

L

= 100Ω, Figure 4

10

ns

R

FLAT(ON

No te 2

0.25

I

NO_(OFF

I

COM_(OFF

I

COM_(ON

t

TRANS

t

ON(EN

t

OFF(EN

+1V, +3V, or floating

V

= +2V, CL = 35pF,

NO_

TA = T

TA = T

TA = T

TA = T

-0.25 ±0.01 0.25

-0.35 0.35

-0.25 ±0.01 0.25

-0.35 0.35

-0.25 ±0.01 0.25

-0.35 0.35

-0.1 0.005

to T

MIN

MAX

to T

MIN

MAX

to T

MIN

MAX

to T

MIN

MAX

MAX4638/MAX4639

3.5Ω, Single 8:1 and Dual 4:1,

Low-Voltage Analog Multiplexers

_______________________________________________________________________________________ 5

ELECTRICAL CHARACTERISTICS—+3.0V Single Supply (continued)

(V+ = +2.7V to +3.3V, V- = 0, VIH= +2.0V, VIL= +0.4V, TA= T

MIN

to T

MAX

, unless otherwise noted. Typical values are at V+ = +3V

and T

A

= +25°C.) (Note 9)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

(

)

MAX

UNITS

CL = 5pF, R

L

= 50Ω,

f = 10MHz,

TA = +25°C55

Off-Isolation (Note 6) V

ISO

CL = 5pF, R

L

= 50Ω,

f = 1M Hz, V

N O_

= 1V

RM S

,

Figure 6

TA = +25°C -75

dB

C L = 5p F, R

L

= 50Ω,

f = 10MH z, V

N O_

= 1V

RM S

,

Figure 7

TA = +25°C -65

Crosstalk (Note 7) V

CT

C L = 5p F, R

L

= 50Ω,

f = 1MH z, V

NO_

= 1V

RMS

,

Fig ur e 7

T

A

= +25°C -85

dB

TA = +25°C50

On-Channel -3dB Bandwidth BW

Signal =

and out,
Figure 6

TA = +25°C85

MHz

NO_ Off-Capacitance

)

V

NO_

= 0V, f = 1MHz,

Figure 8

T

A

= +25°C9pF

TA = +25°C40

COM_ Off-Capacitance

)

f = 1MHz,
Figure 8

TA = +25°C20

pF

TA = +25°C54

Switch On-Capacitance C

(ON)

= 0V,
f = 1MHz,
Figure 8

TA = +25°C34

pF

SUPPLY

Positive Supply Current I+ V+ = +3.3V, V

IN_

= 0 or V+

1µA

ELECTRICAL CHARACTERISTICS—±2.5V Dual Supplies

(V+ = +2.5 ±10%, V- = -2.5V ±10%, VIH= +2.0V, VIL= +0.4V, TA=T

MIN

to T

MAX

, unless otherwise noted. Typical values are at

V± = ±2.5V and T

A

= +25°C.)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

(

MAX

UNITS

ANALOG SWITCH

Analog Signal Range

V

COM_

,

V

NO_

V- V+ V

TA = +25°C 2.5 3.5

On-Resistance R

ON

V + = + 2.25V, V - = -2.25V

4.5

Ω

TA = +25°C 0.2 0.4

On-Resistance Match
Between Channels (Notes 3, 8)

∆R

ON

V + = + 2.25V , V - = - 2.25V

0.5

Ω

C

NO_(OFF

C

C OM _( OFF

V

= + 1V

N O_

0dBm, 50Ω in

V

= 0V ,

C OM _

V

= V

COM

I

= 10m A, V

COM_

I

= 10m A, V

COM_

RM S

, Fi g ur e 6

MAX4638

MAX4639

MAX4638

MAX4639

NO_

MAX4638

MAX4639

= ±1.5V,

NO_

= ±1.5V,

NO_

TA = T

TA = T

to T

MIN

MAX

to T

MIN

MAX

No te 2

0.001

N o t e 2 )