19-4725; Rev 4; 9/08
Improved, 8-Channel/Dual 4-Channel,
CMOS Analog Multiplexers
Maxim’s redesigned DG408 and DG409 CMOS analog
multiplexers now feature guaranteed matching between
channels (8Ω max) and flatness over the specified signal range (9Ω max). These low on-resistance muxes
(100Ω max) conduct equally well in either direction and
feature guaranteed low charge injection (15pC max). In
addition, these new muxes offer low input off-leakage
current over temperature—less than 5nA at +85°C.
The DG408 is a 1-of-8 multiplexer/demultiplexer and
the DG409 is a dual 4-channel multiplexer/demultiplexer. Both muxes operate with a +5V to +30V single supply and with ±5V to ±20V dual supplies. ESD protection
is guaranteed to be greater than 2000V per Method
3015.7 of MIL-STD-883. These improved muxes are
pin-compatible plug-in upgrades for the industry standard DG408 and DG409.
____________________________Features
♦ Pin-Compatible Plug-In Upgrades for
Industry Standard DG408/DG409
♦ Guaranteed Matching Between Channels, 8Ω Max
♦ Guaranteed On-Resistance Flatness, 9Ω Max
♦ Guaranteed Low Charge Injection, 15pC Max
♦ Low On-Resistance, 100Ω Max
♦ Input Leakage, 5nA Max at +85°C
♦ Low Power Consumption, 1.25mW Max
♦ Rail-to-Rail Signal Handling
♦ Digital Input Controls TTL/CMOS Compatible
♦ ESD Protection >2000V per Method 3015.7
Ordering Information
Applications
Sample-and-Hold Circuits
PART
TEMP RANGE
PIN-PACKAGE
Test Equipment
DG408CUE
Guidance and Control Systems
DG408CJ
0°C to +70°C
16 Plastic DIP
Communications Systems
DG408CY
0°C to +70°C
16 Narrow SO
Data-Acquisition Systems
DG408C/D
0°C to +70°C
Dice*
Audio Signal Routing
DG408EUE
0°C to +70°C
16 TSSOP
0°C to +70°C
16 TSSOP
DG408DJ
-40°C to +85°C
16 Plastic DIP
DG408DY
-40°C to +85°C
16 Narrow SO
Ordering Information continued at end of data sheet.
*Contact factory for dice specifications.
**Contact factory for availability and processing to MIL-STD-883.
Functional Diagrams
Pin Configurations
V+
V-
GND
TOP VIEW
S1
A0 1
16 A1
EN 2
15 A2
V- 3
14 GND
DG408
S1 4
13 V+
S2
S3
S4
D
S5
S6
S2 5
12 S5
S7
S3 6
11 S6
S8
S4 7
10 S7
D 8
9
DIP/SO/TSSOP
DG409 appears at end of data sheet.
DECODERS/DRIVERS
S8
A0
A1
A2
EN
DG408 1-of-8 MUX/DEMUX
DG409 appears at end of data sheet.
________________________________________________________________ Maxim Integrated Products
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.
1
DG408/DG409
_______________General Description
DG408/DG409
Improved, 8-Channel/Dual 4-Channel,
CMOS Analog Multiplexers
ABSOLUTE MAXIMUM RATINGS
Voltage Referenced to VV+ ............................................................................-0.3V, 44V
GND .........................................................................-0.3V, 25V
Digital Inputs, S, D (Note 1)....................(V- - 2V) to (V+ + 2V) or
30mA, (whichever occurs first)
Continuous Current (any terminal) ......................................30mA
Peak Current, S, D
(pulsed at 1ms, 10% duty cycle max) ..........................100mA
Continuous Power Dissipation (TA = +70°C)
TSSOP (derate 9.4mW/°C above +70°C) ....................755mW
Plastic DIP (derate 10.53mW/°C above +70°C) ..........842mW
Narrow SO (derate 8.70mW/°C above +70°C) ............696mW
CERDIP (derate 10.00mW/°C above +70°C) ...............800mW
Operating Temperature Ranges
DG408/DG409C_ ................................................0°C to +70°C
DG408/DG409D,E_ .........................................-40°C to +85°C
DG408/DG409AK ..........................................-55°C to +125°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10sec) .............................+300°C
Note 1: Signals on S_, D_, EN, A0, A1, or A2 exceeding V+ or V- are clamped by internal diodes. Limit forward current to
maximum current 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.
ELECTRICAL CHARACTERISTICS—Dual Supplies
(V+ = 15V, V- = -15V, GND = 0V, VAH = +2.4V, VAL = +0.8V, TA = TMIN to TMAX, unless otherwise noted.)
PARAMETER
SYMBOL
MIN
CONDITIONS
TYP
MAX
(Note 2)
UNITS
SWITCH
Analog Signal Range
Drain-Source
On-Resistance
VANALOG
rDS(ON)
On-Resistance Matching
Between Channels
ΔrDS(ON)
On-Resistance Flatness
rFLAT
Source-Off Leakage Current
(Note 5)
Drain-Off Leakage Current
(Note 5)
IS(OFF)
(Note 3)
-15
IS = -1.0mA,
VD = ±10V
TA = +25°C
IS = -1.0mA,
VD = ±10V (Note 4)
TA = +25°C
IS = -1.0mA,
VD = ±5V or 0V
TA = +25°C
VD = +10V,
VS = ±10V,
VEN = 0V
TA = +25°C
VD = ±10V,
VS = +10V,
VEN = 0V
TA = +25°C
60
TA = TMIN to TMAX
1.5
TA = TMIN to TMAX
TA = TMIN
to TMAX
DG408
TA = TMIN
to TMAX
DG409
TA = TMIN
to TMAX
Drain-On Leakage Current
(Note 5)
2
ID(ON)
VD = ±10V,
VS = ±10V,
sequence
each switch
on
DG408
TA = TMIN
to TMAX
-0.5
-5
A
-50
-1
C, D
-10
A
-100
-1
C, D
-5
A
-50
-1
C, D
-20
A
-100
TA = +25°C
DG409
TA = TMIN
to TMAX
9
12
C, D
TA = +25°C
8
10
1.8
TA = +25°C
100
125
TA = TMIN to TMAX
ID(OFF)
VD = +10V,
VS = ±10V,
VEN = 0V
15
-1
0.01
V
Ω
Ω
Ω
0.5
5
nA
50
0.02
1
10
100
0.02
1
nA
5
50
0.02
1
20
100
0.02
1
C, D
-10
10
A
-50
50
_______________________________________________________________________________________
nA
Improved, 8-Channel/Dual 4-Channel,
CMOS Analog Multiplexers
(V+ = 15V, V- = -15V, GND = 0V, VAH = +2.4V, VAL = +0.8V, TA = TMIN to TMAX, unless otherwise noted.)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
(Note 2)
UNITS
INPUT
Input Current with
Input Voltage High
IAH
VA = 2.4V or 15V
-1.0
1.0
µA
Input Current with
Input Voltage Low
IAL
VEN = 0V or 2.4V,
VA = 0V
-1.0
1.0
µA
±20
30
75
0.5
2
1
10
V
SUPPLY
Power-Supply Range
±5
VEN = VA = 0V or 4.5V
Positive Supply Current
Negative Supply Current
I+
I-
VEN = 2.4V,
VA(ALL) = 0V or 2.4V
VEN = 2.4V,
VA(ALL) = 0V or 2.4V
TA = +25°C
TA = TMIN to TMAX
TA = +25°C
TA = TMIN to TMAX
TA = +25°C
TA = TMIN to TMAX
16
0.075
-1
-10
µA
mA
µA
DYNAMIC
Transition Time
tTRANS
Figure 2
Break-Before-Make Interval
tOPEN
Figure 4
Enable Turn-On Time
tON(EN)
Figure 3
Enable Turn-Off Time
tOFF(EN)
Figure 3
TA = +25°C
TA = TMIN to TMAX
TA = +25°C
TA = +25°C
TA = TMIN to TMAX
TA = +25°C
TA = TMIN to TMAX
85
10
40
85
175
250
ns
ns
150
225
150
300
ns
ns
CL = 1.0nF,
VS = 0V,
RS = 0Ω, Figure 5
TA = +25°C
2
VISO
VEN = 0V,
RL = 1kΩ,
f = 100kHz, Figure 6
TA = +25°C
-75
dB
Crosstalk Between Input
Channels
VCT
VEN = 2.4V,
f = 100kHz,
VGEN = 1VP-P,
RL = 1kΩ, Figure 7
TA = +25°C
-92
dB
Logic Input Capacitance
CIN
f = 1MHz
TA = +25°C
8
pF
Source-Off Capacitance
CS(OFF)
f = 1MHz,
VEN = VS = 0V,
Figure 8
TA = +25°C
3
pF
Charge Injection
(Note 3)
Q
Off Isolation
(Note 6)
Drain-Off Capacitance
Drain-On Capacitance
CD(OFF)
CD(ON)
+
CS(ON)
f = 1MHz,
VEN = 0.8V
VD = 0V,
Figure 8
f = 1MHz,
VEN = 2.4V
VD = 0V,
Figure 8
DG408
pC
26
TA = +25°C
DG409
pF
14
DG408
37
TA = +25°C
DG409
15
pF
25
_______________________________________________________________________________________
3
DG408/DG409
ELECTRICAL CHARACTERISTICS—Dual Supplies (continued)
DG408/DG409
Improved, 8-Channel/Dual 4-Channel,
CMOS Analog Multiplexers
ELECTRICAL CHARACTERISTICS—Single Supply
(V+ = 12V, V- = 0V, GND = 0V, VAH = +2.4V, VAL = +0.8V, TA = TMIN to TMAX, unless otherwise noted.)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
(Note 2)
UNITS
SWITCH
Analog Signal Range
VANALOG
(Note 3)
0
12
V
rDS(ON)
IS = -1.0mA
VD = 3V or 10V
TA = +25°C
120
175
Ω
Transition Time
(Note 3)
tTRANS
VS1 = 8V,
VS8 = 0V,
VA = 0V,
Figure 2
TA = +25°C
115
450
ns
Enable Turn-On Time
(Note 3)
tON(EN)
VAL = 0V,
VS1 = 5V,
Figure 3
TA = +25°C
100
600
ns
Enable Turn-Off Time
(Note 3)
tOFF(EN)
VAL = 0V,
VS1 = 5V,
Figure 3
TA = +25°C
75
300
ns
CL = 1.0nF,
VS = 0V,
RS = 0Ω
TA = +25°C
2
Drain-Source On-Resistance
DYNAMIC
Charge Injection
Q
pC
Note 2: The algebraic convention where the most negative value is a minimum and the most positive value a maximum is used in
this data sheet.
Note 3: Guaranteed by design.
Note 4: ΔRON = RON(MAX) - RON(MIN). On-resistance match between channels and flatness are guaranteed only with specified
voltages. Flatness is defined as the difference between the maximum and minimum value of on-resistance as measured at
the extremes of the specified analog signal range.
Note 5: Leakage parameters are 100% tested at the maximum rated hot temperature and guaranteed by correlation at +25°C.
Note 6: Off isolation = 20log VD/VS, where VD = output and VS = input to off switch.
4
_______________________________________________________________________________________
Improved, 8-Channel/Dual 4-Channel,
CMOS Analog Multiplexers
ON-RESISTANCE vs. VD AND
TEMPERATURE (DUAL SUPPLIES)
±5V
+85°C
60
+25°C
-55°C
40
±20V
280
rDS(ON) (Ω)
±15V
40
5V
240
200
160
10V
120
20
20
0
-10
-5
0
5
10
15
20
-15
-10
-5
VD (V)
5
10
0
15
5
10
20
ON LEAKAGE vs. TEMPERATURE
1000
DG408/9 TOC-05
DG408/9 TOC-04
1000
V+ = 15V
V- = -15V
100
15
VD (V)
OFF LEAKAGE vs. TEMPERATURE
V+ = 15V
V- = 0V
140
0
VD (V)
ON-RESISTANCE vs. VD AND
TEMPERATURE (SINGLE SUPPLY)
160
20V
40
100
DG408/9 TOC-05
-15
15V
80
0
-20
V+ = 15V
V- = -15V
+125°C
+25°C
80
-55°C
60
10
OFF LEAKAGE (nA)
+85°C
100
ON LEAKAGE (nA)
120
1
ICOM (ON)
0.1
0.01
40
0
5
10
15
1
0.1
ICOM (ON)
0.001
0.0001
0.0001
-55 -35 -15
5
25 45
85 105 125
65
-55 -35 -15
TEMPERATURE (°C)
VD (V)
CHARGE INJECTION vs. VD
100
85 105 125
I+
10
I+, I- (μA)
V+ = 15V
V- = -15V
0
V+ = 12V
V- = 0V
-10
65
DG408/9 TOC-08
20
10
25 45
5
TEMPERATURE (°C)
SUPPLY CURRENT vs. TEMPERATURE
30
DG408/9 TOC-07
0
10
0.01
INO (OFF)
0.001
20
Qj (pC)
rDS(ON) (Ω)
360
+125°C
80
80
60
400
320
rDS(ON) (Ω)
rDS(ON) (Ω)
100
±10V
100
V+ = 15V
V- = -15V
DG408/9 TOC-03
140
120
120
DG408/9 TOC-01
160
ON-RESISTANCE vs. VD
(SINGLE SUPPLY)
DG408/9 TOC-02
ON-RESISTANCE vs. VD
(DUAL SUPPLIES)
1
0.1
I0.01
-20
-30
V+ = 15V
V- = -15V
VEN = VA = 0V, 4.5V
0.001
-15
-10
-5
0
VD (V)
5
10
15
-55 -35 -15
5
25 45
65
85 105 125
TEMPERATURE (°C)
_______________________________________________________________________________________
5
DG408/DG409
__________________________________________Typical Operating Characteristics
(TA = +25°C, unless otherwise noted.)
DG408/DG409
Improved, 8-Channel/Dual 4-Channel,
CMOS Analog Multiplexers
______________________________________________________________Pin Description
PIN
NAME
FUNCTION
DG408
DG409
1, 15, 16
—
A0, A2, A1
Address Inputs
—
1, 16
A0, A1
Address Inputs
2
2
EN
Enable Input
3
3
V-
Negative Supply Voltage Input
4–7
—
S1–S4
Bidirectional Analog Inputs
—
4–7
S1A–S4A
Bidirectional Analog Inputs
8
—
D
Bidirectional Analog Output
—
8, 9
DA, DB
Bidirectional Analog Outputs
9–12
—
S8–S5
Bidirectional Analog Inputs
—
10–13
S4B–S1B
Bidirectional Analog Inputs
13
14
V+
14
15
GND
Positive Supply Voltage Input
Ground
Applications Information
Operation with
Supply Voltages Other than 15V
Using supply voltages less than ±15V reduces the analog signal range. The DG408/DG409 switches operate
with ±5V to ±20V bipolar supplies or with a +5V to
+40V single supply. Connect V- to GND when operating with a single supply. Both device types can also
operate with unbalanced supplies, such as +24V and
-5V. The Typical Operating Characteristics graphs
show typical on-resistance with 20V, 15V, 10V, and 5V
supplies. (Switching times increase by a factor of two or
more for operation at 5V.)
Overvoltage Protection
Proper power-supply sequencing is recommended for
all CMOS devices. Do not exceed the absolute maximum ratings, because stresses beyond the listed ratings may cause permanent damage to the devices.
Always sequence V+ on first, then V-, followed by the
logic inputs, S or D. If power-supply sequencing is not
possible, add two small signal diodes in series with
supply pins for overvoltage protection (Figure 1).
Adding diodes reduces the analog signal range to 1V
below V+ and 1V above V-, but does not affect the
devices’ low switch resistance and low leakage characteristics. Device operation is unchanged, and the difference between V+ and V- should not exceed +44V.
6
V+
DG408
DG409
S
D
Vg
V-
Figure 1. Overvoltage Protection Using External Blocking
Diodes
_______________________________________________________________________________________
Improved, 8-Channel/Dual 4-Channel,
CMOS Analog Multiplexers
+15V
V+
±10V
S1
A2
A1
S2-S7
A0
DG408
S8
EN
+10V
D
GND
VOUT
V-
LOGIC
INPUT
50%
35pF
50Ω
0V
300Ω
-15V
+15V
VS1
V+
SWITCH
OUTPUT
VOUT
±10V
S1B
A1
90%
0V
A0
90%
S1A-S4A
VS8 or VS4B
S4B
DG409
EN
+10V
tTRANS (ON)
DB
GND
tR < 20ns
tF < 20ns
+3V
V-
50Ω
tTRANS (OFF)
VOUT
35pF
300Ω
-15V
Figure 2. Transition Time
+15V
V+
EN
S1
-5V
S2-S8
A0
DG408
A1
A2
D
GND
50Ω
VOUT
V-
35pF
1k
LOGIC
INPUT
-15V
S1B
10%
SWITCH
OUTPUT
-5V
S1A-S4A
S2B-S4B,
DA
90%
VOUT
DG409
A1
50Ω
tOFF(EN)
0V
V+
A0
50%
0V
tON(EN)
+15V
EN
tR < 20ns
tF < 20ns
+3V
DB
GND
VOUT
V1k
35pF
-15V
Figure 3. Enable Switching Time
_______________________________________________________________________________________
7
DG408/DG409
Test Circuits/Timing Diagrams
Improved, 8-Channel/Dual 4-Channel,
CMOS Analog Multiplexers
DG408/DG409
Test Circuits/Timing Diagrams (continued)
+15V
+2.4V
V+
EN
S1-S8
LOGIC
INPUT
+5V
tR < 20ns
tF < 20ns
+3V
50%
0V
A0
A1
VOUT
DG408
80%
A2
D
GND
SWITCH
OUTPUT
VOUT
V-
35pF
tOPEN
0V
300Ω
50Ω
-15V
Figure 4. Break-Before-Make Interval
+15V
RS
S_
V+
LOGIC
INPUT
EN
VS
CHANNEL
SELECT
+3V
OFF
ON
OFF
0V
A0
D
A1
VOUT
DG408
A2
CL = 1000nF
GND
V-
ΔVOUT
VOUT
ΔVOUT IS THE MEASURED VOLTAGE DUE TO CHARGE TRANSFER
ERROR Q WHEN THE CHANNEL TURNS OFF.
-15V
Q = CL = ΔVOUT
Figure 5. Charge Injection
8
_______________________________________________________________________________________
Improved, 8-Channel/Dual 4-Channel,
CMOS Analog Multiplexers
+15V
10nF
+15V
VIN
S1
VIN
V+
V+
S1
S2
RS = 50Ω
10nF
EN
+2.4V
D
VOUT
S8
A0
D
A1
DG408
RL = 1kΩ
A2
EN
GND
S8
VOUT
RS = 50Ω
DG408
A0
A1
RL = 1kΩ
A2
V-
V-
GND
10nF
-15V
OFF ISOLATION = 20log
10nF
-15V
VOUT
VIN
CROSSTALK = 20log
Figure 6. Off Isolation
VOUT
VIN
Figure 7. Crosstalk
+15V
V+
S1
A2
CHANNEL
SELECT
DG408
A1
S8
A0
Meter
Impedance
Analyzer
or Equivalent
D
GND
EN
V-
f = 1MHz
-15V
Figure 8. Source/Drain Capacitance
_______________________________________________________________________________________
9
DG408/DG409
Test Circuits/Timing Diagrams (continued)
DG408/DG409
Improved, 8-Channel/Dual 4-Channel,
CMOS Analog Multiplexers
Pin Configurations/Functional Diagrams/Truth Tables (continued)
TOP VIEW
V+
V-
GND
S1A
A0 1
16 A1
S2A
EN 2
15 GND
S3A
V- 3
14 V+
S4A
S1A 4
DG409
13 S1B
S2A 5
12 S2B
S3A 6
11 S3B
S4A 7
10 S4B
DA
S1B
S2B
DA 8
9
DB
DB
S3B
S4B
CMOS DECODE LOGIC
DIP/SO/TSSOP
A1
EN
A0
DG409 4-CHANNEL DIFFERENTIAL MUX/DEMUX
A2
A1
A0
EN
ON
SWITCH
X
0
0
0
X
0
0
1
X
0
1
0
0
1
1
1
None
1
2
3
0
1
1
1
0
0
1
0
1
1
1
1
1
1
1
1
0
1
1
1
A1
A0
EN
ON
SWITCH
X
X
0
None
0
0
1
1
4
5
6
0
1
1
2
1
0
1
3
7
8
1
1
1
4
DG409
DG408
LOGIC “0” VAL ≤ 0.8V, LOGIC “1” VAH ≥ 2.4V
10
LOGIC “0” VAL ≤ 0.8V, LOGIC “1” VAH ≥ 2.4V
______________________________________________________________________________________
Improved, 8-Channel/Dual 4-Channel,
CMOS Analog Multiplexers
PART
TEMP RANGE
PIN-PACKAGE
DG408DK
-40°C to +85°C
16 CERDIP
DG408AK
-55°C to +125°C
16 CERDIP**
Package Information
For the latest package outline information and land patterns, go
to www.maxim-ic.com/packages.
PACKAGE TYPE
PACKAGE CODE
DOCUMENT NO.
16 TSSOP
U16-1
21-0066
DG408MY/PR
-55°C to +125°C
16 SO***
DG408MY/PR-T
-55°C to +125°C
16 SO***
16 Plastic DIP
P16-2
21-0043
16 Narrow SO
S16-5
21-0041
DG409CUE
0°C to +70°C
16 TSSOP
DG409CJ
0°C to +70°C
16 Plastic DIP
16 SO
S16-5
21-0041
16 Narrow SO
16 CERDIP
J16-3
21-0590
DG409CY
0°C to +70°C
DG409C/D
0°C to +70°C
DG409EUE
-40°C to +85°C
Dice*
16 TSSOP
DG409DJ
-40°C to +85°C
16 Plastic DIP
DG409DK
-40°C to +85°C
16 CERDIP
DG409AK
-55°C to +125°C
12 CERDIP**
DG409MY/PR
-55°C to +125°C
16 SO***
DG409MY/PR-T
-55°C to +125°C
16 SO***
*Contact factory for dice specifications.
**Contact factory for availability and processing to MIL-STD-883.
______________________________________________________________________________________
11
DG408/DG409
Ordering Information (continued)
DG408/DG409
Improved, 8-Channel/Dual 4-Channel,
High-Performance, CMOS Analog Multiplexers
Revision History
REVISION
NUMBER
REVISION
DATE
3
8/02
Changed operating voltage and TSSOP packaging
4
9/08
Added rugged plastic information
DESCRIPTION
PAGES
CHANGED
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1, 11
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.
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