19-4804; Rev 1; 12/08
Fault-Protected, Single 8-to-1/
Dual 4-to-1 Multiplexers
General Description
The MAX4708/MAX4709 8-to-1 and dual 4-to-1 fault-pro-
tected multiplexers are pin compatible with the industry-
standard DG508/DG509. The MAX4708/MAX4709 are
similar to the MAX4508/MAX4509, but these devices do
not have clamp diodes to the supply rails on the switch
outputs. These multiplexers feature fault-protected
inputs, rail-to-rail signal-handling capability, and do not
require power-supply sequencing.
Both devices offer ±40V overvoltage protection with the
supplies off, ±36V protection with the supplies on, and
feature 400Ω (max) on-resistance with 15Ω (max)
matching between channels. The MAX4708/MAX4709
operate with dual supplies of ±4.5V to ±20V or a single
supply of +9V to +36V. All digital inputs have TTL logic-
compatible thresholds, ensuring both TTL and CMOS
logic compatibility when using a single +12V supply or
dual ±15V supplies.
For low-voltage applications requiring fault protection,
refer to the MAX4711/MAX4712/MAX4713 data sheet.
♦
All Channels Off with Power Off
♦
Rail-to-Rail Signal Handling
♦
400Ω (max) On-Resistance
♦
±40V Fault Protection with Power Off
♦
±25V Fault Protection with ±15V Supplies
♦
100ns Fault-Response Time
♦
±4.5V to ±20V Dual Supplies
♦
+9V to +36V Single Supply
♦
TTL/CMOS-Compatible Logic Inputs
Features
♦
No Power-Supply Sequencing Required
MAX4708/MAX4709
Ordering Information
PART
MAX4708ESE
MAX4708EWE
MAX4708EPE
MAX4709ESE
MAX4709EWE
MAX4709EPE
TEMP RANGE
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
PIN-PACKAGE
16 Narrow SO
16 Wide SO
16 Plastic DIP
16 Narrow SO
16 Wide SO
16 Plastic DIP
Applications
Data-Acquisition Systems
Industrial and Process Control
Avionics
Signal Routing
Redundancy/Backup Systems
ATE Systems
Hot Swap
Pin Configurations/Functional Diagrams
TOP VIEW
MAX4708
A0 1
EN 2
V- 3
NO1 4
NO2 5
NO3 6
NO4 7
COM 8
LOGIC
16 A1
15 A2
14 GND
13 V+
12 NO5
11 NO6
10 NO7
9
NO8
A0 1
EN 2
V- 3
NO1A 4
NO2A 5
NO3A 6
NO4A 7
COMA 8
LOGIC
MAX4709
16 A1
15 GND
14 V+
13 NO1B
12 NO2B
11 NO3B
10 NO4B
9
COMB
SO/DIP
SO/DIP
Pin Configurations/Functional Diagrams continued at end of data sheet.
________________________________________________________________
Maxim Integrated Products
1
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.
Fault-Protected, Single 8-to-1/
Dual 4-to-1 Multiplexers
MAX4708/MAX4709
ABSOLUTE MAXIMUM RATINGS
(All Voltages Referenced to GND)
V+ ........................................................................-0.3V to +44.0V
V- .........................................................................-44.0V to +0.3V
V+ to V-................................................................-0.3V to +44.0V
COM_, A_, EN (Note 1)........................ (V+ + 0.3V) to (V- - 0.3V)
NO_.........................................................(V+ - 40V) to (V- + 40V)
NO_ to COM_ ..........................................................-36V to +36V
NO_ Voltage with Switch Power On ........................-30V to +30V
NO_ Voltage with Switch Power Off ........................-40V to +40V
Continuous Current into any Terminal. .............................±30mA
Peak Current into any Terminal
(pulsed at 1ms, 10% duty cycle)................................±100mA
Continuous Power Dissipation (T
A
= +70°C)
16 Narrow SO (derate 8.70mW/°C above +70°C) .......696mW
16 Plastic DIP (derate 10.53mW/°C above +70°C) .....842mW
16 Wide SO (derate 9.52mW/°C above +70°C)...........762mW
Operating Temperature Range
MAX4708E_ E/MAX4709E_E ...........................-40°C to +85°C
Junction Temperature ..................................................... +150°C
Storage Temperature Range .............................-65°C to +160°C
Lead Temperature (soldering, 10s) .................................+300°C
Note 1:
COM_, EN, and A_ pins are not fault protected. Signals on COM_, EN, or A_ exceeding V+ or V- are clamped by internal
diodes. Limit forward-diode current to maximum current rating.
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.
ELECTRICAL CHARACTERISTICS—Dual Supplies
(V+ = +15V, V- = -15V, V
A_H
= +2.4V, V
A_L
= +0.8V, V
EN
= +2.4V, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at
T
A
= +25°C.) (Note 2)
PARAMETER
ANALOG SWITCH
Fault-Free Analog Signal Range
On-Resistance
On-Resistance Match
Between Channels
NO_ Off-Leakage Current
V
NO_
R
ON
ΔR
ON
I
NO_(OFF)
(Notes 3, 4)
V
COM_
= ±10V, I
NO_
= 0.2mA
V
COM_
= ±10V, I
NO_
= 0.2mA
(Note 5)
V
COM_
= ±10V, V
NO_
=
±10V
(Note 6)
MAX4708
MAX4709
MAX4708
MAX4709
E
+25°C
E
+25°C
E
+25°C
E
+25°C
E
+25°C
E
+25°C
E
+25°C
E
-0.5
-5
-2
-20
-1
-10
-2
-25
-1
-15
V-
300
V+
400
500
15
20
+0.5
+5
+2
+20
+1
+10
+2
+25
+1
+15
nA
nA
V
Ω
Ω
nA
SYMBOL
CONDITIONS
T
A
MIN
TYP
MAX
UNITS
COM_ Off-Leakage Current
V
COM_
= ±10V,
I
COM_(OFF)
V
NO_
=
±10V
(Note 6)
COM_ On-Leakage Current
V
COM_
= ±10V,
I
COM_(ON)
V
NO_
=
±10V,
or
floating (Note 6)
2
_______________________________________________________________________________________
Fault-Protected, Single 8-to-1/
Dual 4-to-1 Multiplexers
ELECTRICAL CHARACTERISTICS—Dual Supplies (continued)
(V+ = +15V, V- = -15V, V
A_H
= +2.4V, V
A_L
= +0.8V, V
EN
= +2.4V, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at
T
A
= +25°C.) (Note 2)
PARAMETER
FAULT PROTECTION
Fault-Protected Analog Signal
Range (Notes 3, 4)
COM_ Output Leakage Current,
Supplies On
NO_ Input Leakage Current,
Supplies On
NO_ Input Leakage Current,
Supplies Off
Fault-Trip Threshold
±Fault Output Turn-Off Delay
±Fault Recovery Time
LOGIC INPUT (V
EN
, V
A_
)
Logic Threshold High
Logic Threshold Low
Input Leakage Current
V
IH
V
IL
I
IN
V
A_
= 0.8V or 2.4V
V
NO_
= ±10V, R
L
= 1kΩ,
C
L
= 35pF, Figure 3 (Note 7)
V
NO_
= ±10V, R
L
= 1kΩ,
C
L
= 35pF, Figure 3 (Note 7)
R
L
= 1kΩ, C
L
= 35pF,
Figure 2 (Note 7)
V
NO_
= 5V, R
L
= 1kΩ,
C
L
= 35pF
0.1%
0.01%
E
E
E
+25°C
E
+25°C
E
+25°C
E
E
E
+25°C
+25°C
10
1
2.5
80
0
-70
170
120
-1
160
2.4
0.8
+1
275
400
200
250
350
500
V
V
µA
R
L
= 10kΩ, V
NO_
=
±25V
R
L
= 10kΩ, V
NO_
=
±25V
V
NO_
I
COM_
I
NO_
I
NO_
Power on
Power off
V
NO_
= ±25, V
EN
= 0
V
NO_
= ±25V, V
COM_
=
±10V,
V
EN
= 0
V
NO_
= ±40V, V
COM
= 0,
V+ = 0, V- = 0
+25°C
+25°C
E
+25°C
E
+25°C
E
E
+25°C
+25°C
-25
-40
-1
-10
-1
-10
-1
-10
V-
- 0.4
100
1.5
+25
+40
+1
+10
+1
+10
+1
+10
V+
+ 0.4
V
µA
µA
µA
V
ns
µs
SYMBOL
CONDITIONS
T
A
MIN
TYP
MAX
UNITS
MAX4708/MAX4709
SWITCH DYNAMIC CHARACTERISTICS
Enable Turn-On Time
Enable Turn-Off Time
Transition Time
Settling Time
Break-Before-Make Time Delay
Charge Injection
Off-Isolation
t
ON
t
OFF
t
TRANS
t
SETT
t
BBM
Q
V
ISO
ns
ns
ns
µs
ns
pC
dB
V
NO_
= ±10V, R
L
= 1kΩ, Figure 4
(Note 4)
VNO
_
= 0, R
S
= 0, C
L
= 1.0nF,
Figure 5
f = 1MHz, V
NO_
= 1V
RMS
, R
L
= 75Ω,
C
L
= 15pF, Figure 6 (Note 8)
_______________________________________________________________________________________
3
Fault-Protected, Single 8-to-1/
Dual 4-to-1 Multiplexers
MAX4708/MAX4709
ELECTRICAL CHARACTERISTICS—Dual Supplies (continued)
(V+ = +15V, V- = -15V, V
A_H
= +2.4V, V
A_L
= +0.8V, V
EN
= +2.4V, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at
T
A
= +25°C.) (Note 2)
PARAMETER
Channel-to-Channel Crosstalk
NO_ Off-Capacitance
COM_ Off-Capacitance
COM_ On-Capacitance
POWER SUPPLY
Power-Supply Range
V+ Supply Current
V- Supply Current
GND Supply Current
V+, V-
I+
I-
I
GND
All V
A_
= 0 or 5V, V
NO_
= 0,
V
EN
= 5V
All V
A_
= 0 or 5V, V
NO_
= 0,
V
EN
= 5V
All V
A_
= 0 or 5V, V
NO_
= 0,
V
EN
= 5V
E
+25°C
E
+25°C
E
+25°C
E
200
200
±4.5
370
±20.0
525
750
300
400
300
500
V
µA
µA
µA
SYMBOL
V
CT
C
N_(OFF)
CONDITIONS
f = 1MHz, V
NO_
= 1V
RMS
, R
L
= 75Ω,
C
L
= 15pF, Figure 7 (Note 9)
f = 1MHz, Figure 8
MAX4708
MAX4709
MAX4708
MAX4709
T
A
+25°C
+25°C
+25°C
+25°C
MIN
TYP
-62
10
19
14
28
22
MAX
UNITS
dB
pF
pF
pF
C
COM_(OFF)
f = 1MHz, Figure 8
C
COM_(ON)
f = 1MHz, Figure 8
ELECTRICAL CHARACTERISTICS—Single +12V Supply
(V+ = +12V, V- = 0, V
A_H
= +2.4V, V
A_L
= +0.8V, V
EN
= +2.4V, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at
T
A
= +25°C.) (Note 2)
PARAMETER
ANALOG SWITCH
Fault-Free Analog Signal Range
On-Resistance
On-Resistance Match Between
Channels
NO_ Off-Leakage Current
V
NO_
R
ON
ΔR
ON
I
NO_(OFF)
Power on or off (Note 3)
V
COM_
= 10V, I
NO_
= 0.2mA
V
COM_
= 10V, I
NO_
= 0.2mA
(Note 5)
V
COM_
= 10V, 1V, V
NO_
= 1V, 10V
(Notes 6, 10)
MAX4708
MAX4709
E
+25°C
E
+25°C
C, E
+25°C
E
+25°C
E
+25°C
E
-0.5
-10
-2
-20
-1
-10
0.01
10
-0.3
630
V+
950
1100
35
50
+0.5
+10
+2
+20
+1
+10
nA
V
Ω
Ω
nA
SYMBOL
CONDITIONS
T
A
MIN
TYP
MAX
UNITS
COM_ Off-Leakage Current
V
COM_
= 10V, 1V,
I
COM_(OFF)
V
NO_
= 1V, 10V
(Notes 6, 10)
4
_______________________________________________________________________________________
Fault-Protected, Single 8-to-1/
Dual 4-to-1 Multiplexers
ELECTRICAL CHARACTERISTICS—Single +12V Supply (continued)
(V+ = +12V, V- = 0, V
A_H
= +2.4V, V
A_L
= +0.8V, V
EN
= +2.4V, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at
T
A
= +25°C.) (Note 2)
PARAMETER
SYMBOL
CONDITIONS
MAX4708
MAX4709
T
A
+25°C
E
+25°C
E
MIN
-2
-25
-1
-15
-36
-40
-1
-10
-1
-10
-1
-10
2.4
0.8
-1
0.03
240
100
180
1
2.5
50
100
2
5
5
28
+1
500
700
250
350
400
600
TYP
MAX
+2
+25
+1
+15
+36
+40
+1
+10
+1
+10
+1
+10
nA
UNITS
MAX4708/MAX4709
COM_ On-Leakage Current
V
COM_
= 10V, 1V;
I
COM_(ON)
V
NO_
= 10V, 1V, or
floating (Notes 6, 10)
FAULT PROTECTION
Fault-Protected Analog Signal
Range (Notes 3, 10)
COM_ Output Leakage Current,
Supplies On
NO_ Input Leakage Current,
Supplies On
NO_ Input Leakage Current,
Supply Off
LOGIC INPUT (V
EN
, V
A_
)
Logic Threshold High
Logic Threshold Low
Input Leakage Current
V
IH
V
IL
I
IN
V
A_
= 0.8V or 2.4V
V
COM_
= 10V, R
L
= 2kΩ,
C
L
= 35pF, Figure 3 (Note 7)
V
COM_
= 10V, R
L
= 2kΩ,
C
L
= 35pF, Figure 3 (Note 7)
R
L
= 2kΩ, C
L
= 35pF, Figure 2
(Note 7)
V
NO_
= 5V, R
L
= 1kΩ,
C
L
= 35pF
0.1%
0.01%
E
E
E
+25°C
E
+25°C
E
+25°C
E
E
+25°C
+25°C
+25°C
+25°C
+25°C
V
V
µA
VNO
_
ICOM
_
INO
_
INO
_
Power on
Power off
V
NO_
=
±36V,
V+ = 12V
(Notes 3, 10)
V
NO_
=
±36V,
V
COM_
= 0,
V+ = 12V (Notes 3, 10)
V
NO_
= ±40V, V+ = 0, V- = 0
(Notes 3, 10)
E
+25°C
E
+25°C
E
+25°C
E
V
µA
µA
µA
SWITCH-DYNAMIC CHARACTERISTICS
Enable Turn-On Time
Enable Turn-Off Time
Transition Time
Settling Time
Break-Before-Make Time Delay
Charge Injection
NO_ Off-Capacitance
COM_ Off-Capacitance
COM_ On-Capacitance
t
ON
t
OFF
t
TRANS
t
SETT
t
BBM
Q
C
NO_(OFF)
ns
ns
ns
µs
ns
pC
pF
pF
pF
V
COM_
= 10V, R
L
= 2kΩ, Figure 4
(Note 4)
V
NO_
= 0, R
S
= 0, C
L
= 1.0 nF,
Figure 5
f = 1MHz, V
NO_
= 0, Figure 8
f = 1MHz, V
COM_
= V
NO_
= 0,
Figure 8
C
COM_(OFF)
f = 1MHz, V
NO_
= 0, Figure 8
C
COM_(ON)
_______________________________________________________________________________________
5
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