_______________General Description
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.
Applications
Sample-and-Hold Circuits
Test Equipment
Guidance and Control Systems
Communications Systems
Data-Acquisition Systems
Audio Signal Routing
____________________________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
DG408/DG409
Improved, 8-Channel/Dual 4-Channel,
CMOS Analog Multiplexers
________________________________________________________________
Maxim Integrated Products
1
Pin Configurations
Functional Diagrams
19-4725; Rev 4; 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.
Ordering Information
Ordering Information continued at end of data sheet.
*
Contact factory for dice specifications.
**
Contact factory for availability and processing to MIL-STD-883.
PART TEMP RANGE PIN-PACKAGE
DG408CUE 0°C to +70°C 16 TSSOP
DG408CJ 0°C to +70°C 16 Plastic DIP
DG408CY 0°C to +70°C 16 Narrow SO
DG408C/D 0°C to +70°C Dice*
DG408EUE 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
TOP VIEW
A0
1
EN
2
V-
3
S1
S2
S3
S4
D
DG409 appears at end of data sheet.
DG408
4
5
6
7
8
DIP/SO/TSSOP
V+ V- GND
S1
A1
16
A2
15
GND
14
V+
13
S5
12
S6
11
S7
10
S8
9
S2
S3
S4
S5
S6
S7
S8
DECODERS/DRIVERS
A0 A1 A2 EN
DG408 1-of-8 MUX/DEMUX
DG409 appears at end of data sheet.
D
DG408/DG409
Improved, 8-Channel/Dual 4-Channel,
CMOS Analog Multiplexers
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS—Dual Supplies
(V+ = 15V, V- = -15V, GND = 0V, VAH= +2.4V, VAL= +0.8V, TA= T
MIN
to T
MAX
, unless otherwise noted.)
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.
Voltage Referenced to V-
V+ ............................................................................-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 (T
A
= +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
V
D
= ±10V,
V
S
= ±10V,
sequence
each switch
on
VD= +10V,
V
S
= ±10V,
V
EN
= 0V
VD= +10V,
V
S
= ±10V,
VEN= 0V
IS= -1.0mA,
VD= ±10V
IS= -1.0mA,
VD= ±10V (Note 4)
VD= ±10V,
V
S
= +10V,
V
EN
= 0V
CONDITIONS
nA
-50 50
I
D(ON)
Drain-On Leakage Current
(Note 5)
-10 10
-1 0.02 1
-100 100
-20 20
-1 0.02 1
nA
-50 50
I
D(OFF)
Drain-Off Leakage Current
(Note 5)
-5 5
-1 0.02 1
-100 100
60 100
-10 10
-1 0.02 1
nA
-50 50
I
S(OFF)
Source-Off Leakage Current
(Note 5)
-5 5
Ω
125
r
DS(ON)
Drain-Source
On-Resistance
1.5 8
Ω
10
Δr
DS(ON)
On-Resistance Matching
Between Channels
UNITS
MIN TYP MAX
(Note 2)
SYMBOLPARAMETER
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.
V-15 15V
ANALOG
Analog Signal Range
IS= -1.0mA,
V
D
= ±5V or 0V
1.8 9
Ω
12
r
FLAT
On-Resistance Flatness
(Note 3)
TA= +25°C
TA= T
MIN
to T
MAX
TA= +25°C
TA= T
MIN
to T
MAX
TA= +25°C
TA= T
MIN
to T
MAX
-0.5 0.01 0.5TA= +25°C
TA= T
MIN
to T
MAX
TA= +25°C
TA= T
MIN
to T
MAX
TA= +25°C
TA= T
MIN
to T
MAX
TA= +25°C
TA= T
MIN
to T
MAX
TA= +25°C
TA= T
MIN
to T
MAX
DG409
DG408
DG409
DG408
C, D
A
C, D
A
C, D
A
C, D
A
C, D
A
SWITCH
DG408/DG409
Improved, 8-Channel/Dual 4-Channel,
CMOS Analog Multiplexers
_______________________________________________________________________________________ 3
ELECTRICAL CHARACTERISTICS—Dual Supplies (continued)
(V+ = 15V, V- = -15V, GND = 0V, VAH= +2.4V, VAL= +0.8V, TA= T
MIN
to T
MAX
, unless otherwise noted.)
Off Isolation
(Note 6)
dB-75V
ISO
215Q
Charge Injection
(Note 3)
ns
225
t
ON(EN)
Enable Turn-On Time
85 150
ns10 40t
OPEN
Break-Before-Make Interval
85 175
µA-1.0 1.0I
AL
Input Current with
Input Voltage Low
µA-1.0 1.0I
AH
Input Current with
Input Voltage High
µA
-10 10
I-Negative Supply Current
-1 1
mA
2
I+Positive Supply Current
0.075 0.5
V±5 ±20Power-Supply Range
16 30
µA
75
UNITS
MIN TYP MAX
(Note 2)
SYMBOLPARAMETER
Crosstalk Between Input
Channels
V
CT
-92 dB
Logic Input Capacitance C
IN
8 pF
Source-Off Capacitance C
S(OFF)
3 pF
26
Drain-Off Capacitance C
D(OFF)
f = 1MHz,
VEN= 0.8V
V
D
= 0V,
Figure 8
14
pF
37
Drain-On Capacitance
C
D(ON)
+
C
S(ON)
f = 1MHz,
V
EN
= 2.4V
V
D
= 0V,
Figure 8
25
pF
TA= +25°C
VEN= 0V or 2.4V,
VA= 0V
TA= +25°C
VA= 2.4V or 15V
TA= T
MIN
to T
MAX
TA= T
MIN
to T
MAX
TA= +25°C
TA= +25°C
TA= +25°C
TA= T
MIN
to T
MAX
TA= +25°C
TA= +25°C
TA= +25°C
TA= T
MIN
to T
MAX
CONDITIONS
TA= +25°C
TA= +25°C
TA= +25°C
TA= +25°C
TA= +25°C
VEN= 0V,
R
L
= 1kΩ,
f = 100kHz, Figure 6
CL= 1.0nF,
VS= 0V,
RS= 0Ω, Figure 5
Figure 3
VEN= 2.4V,
V
A(ALL)
= 0V or 2.4V
Figure 4
VEN= 2.4V,
V
A(ALL)
= 0V or 2.4V
VEN= VA= 0V or 4.5V
VEN= 2.4V,
f = 100kHz,
V
GEN
= 1V
P-P
,
R
L
= 1kΩ, Figure 7
f = 1MHz
f = 1MHz,
VEN= VS= 0V,
Figure 8
DG408
DG409
DG408
DG409
ns
250
t
TRANS
Transition Time
TA= T
MIN
to T
MAX
Figure 2
pC
ns
300
t
OFF(EN)
Enable Turn-Off Time
150
TA= T
MIN
to T
MAX
TA= +25°C
Figure 3
INPUT
SUPPLY
DYNAMIC
DG408/DG409
Improved, 8-Channel/Dual 4-Channel,
CMOS Analog Multiplexers
4 _______________________________________________________________________________________
(Note 3)
CONDITIONS
CL= 1.0nF,
VS= 0V,
RS= 0Ω
VAL= 0V,
VS1= 5V,
Figure 3
VAL= 0V,
V
S1
= 5V,
Figure 3
VS1= 8V,
VS8= 0V,
VA= 0V,
Figure 2
IS= -1.0mA
V
D
= 3V or 10V
pC2QCharge Injection
ns75 300t
OFF(EN)
Enable Turn-Off Time
(Note 3)
V012V
ANALOG
Analog Signal Range
ns100 600t
ON(EN)
Enable Turn-On Time
(Note 3)
ns115 450t
TRANS
Transition Time
(Note 3)
Ω120 175r
DS(ON)
Drain-Source On-Resistance
UNITS
MIN TYP MAX
(Note 2)
SYMBOLPARAMETER
ELECTRICAL CHARACTERISTICS—Single Supply
(V+ = 12V, V- = 0V, GND = 0V, VAH= +2.4V, VAL= +0.8V, TA= T
MIN
to T
MAX
, unless otherwise noted.)
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: ΔR
ON
= R
ON(MAX)
- R
ON(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 V
D/VS
, where VD= output and VS= input to off switch.
TA= +25°C
TA= +25°C
TA= +25°C
TA= +25°C
TA= +25°C
SWITCH
DYNAMIC
DG408/DG409
Improved, 8-Channel/Dual 4-Channel,
CMOS Analog Multiplexers
_______________________________________________________________________________________ 5
__________________________________________Typical Operating Characteristics
(TA = +25°C, unless otherwise noted.)
160
140
120
100
(Ω)
80
DS(ON)
r
60
40
20
0
-20 20-15 15-10 10-5 50
ON-RESISTANCE vs. VD AND
TEMPERATURE (SINGLE SUPPLY)
160
V+ = 15V
V- = 0V
140
120
100
(Ω)
80
DS(ON)
r
60
40
20
0
ON-RESISTANCE vs. V
(DUAL SUPPLIES)
±5V
VD (V)
+125°C
+85°C
+25°C
-55°C
VD (V)
D
±10V
±15V
±20V
DG408/9 TOC-01
DG408/9 TOC-04
151050
120
100
(Ω)
DS(ON)
r
1000
100
0.1
OFF LEAKAGE (nA)
0.01
0.001
0.0001
ON-RESISTANCE vs. VD AND
TEMPERATURE (DUAL SUPPLIES)
V+ = 15V
V- = -15V
80
60
40
20
0
-15 15-10 10-5 50
+125°C
+85°C
+25°C
-55°C
VD (V)
OFF LEAKAGE vs. TEMPERATURE
V+ = 15V
V- = -15V
10
1
I
COM (ON)
I
NO (OFF)
-55 125
-35 -15 65
25
45
5
TEMPERATURE (°C)
85 105
DG408/9 TOC-02
(Ω)
DS(ON)
r
1000
DG408/9 TOC-05
ON LEAKAGE (nA)
0.001
0.0001
ON-RESISTANCE vs. V
D
(SINGLE SUPPLY)
400
360
320
280
240
200
160
120
80
40
5V
10V
15V
15 201050
VD (V)
ON LEAKAGE vs. TEMPERATURE
V+ = 15V
V- = -15V
100
10
1
0.1
0.01
-55 125
-35 -15 65
I
COM (ON)
25
45
5
TEMPERATURE (°C)
85 105
20V
DG408/9 TOC-03
DG408/9 TOC-05
30
CHARGE INJECTION vs. V
20
10
0
(pC)
j
Q
-10
-20
-30
-15 15-10 10-5 50
VD (V)
V+ = 15V
V- = -15V
V+ = 12V
V- = 0V
D
DG408/9 TOC-07
SUPPLY CURRENT vs. TEMPERATURE
100
I+
10
1
I+, I- (μA)
0.1
I-
0.01
0.001
-35 -15 65
-55 125
V+ = 15V
V- = -15V
= VA = 0V, 4.5V
V
EN
45
25
5
TEMPERATURE (°C)
DG408/9 TOC-08
85 105
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.
DG408/DG409
Improved, 8-Channel/Dual 4-Channel,
CMOS Analog Multiplexers
6 _______________________________________________________________________________________
______________________________________________________________Pin Description
Figure 1. Overvoltage Protection Using External Blocking
Diodes
PIN
DG408 DG409
NAME FUNCTION
1, 15, 16 A0, A2, A1 Address Inputs
—
—
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+ Positive Supply Voltage Input
14 15 GND Ground
1, 16
V+
S
V
g
V-
DG408
DG409
D
DG408/DG409
Improved, 8-Channel/Dual 4-Channel,
CMOS Analog Multiplexers
_______________________________________________________________________________________ 7
Test Circuits/Timing Diagrams
Figure 2. Transition Time
Figure 3. Enable Switching Time
50Ω
50Ω
+15V
A2
A1
A0
V+
DG408
EN
GND
+15V
A1
A0
EN
V+
DG409
GND
+15V
S2-S7
V-
-15V
S1A-S4A
V-
-15V
S1B
S4B
DB
S1
S8
D
300Ω
300Ω
±10V
+10V
±10V
+10V
35pF
35pF
LOGIC
V
OUT
V
OUT
INPUT
SWITCH
OUTPUT
V
OUT
V
S8
or V
t
+3V
0V
V
S1
0V
S4B
TRANS (ON)
50%
90%
tR < 20ns
tF < 20ns
90%
t
TRANS (OFF)
EN
A0
A1
A2
50Ω
50Ω
GND
EN
A0
A1
GND
V+
DG408
+15V
V+
DG409
S2-S8
V-
-15V
S1B
S1A-S4A
S2B-S4B,
V-
-15V
S1
DA
DB
-5V
D
1k
-5V
1k
35pF
35pF
V
OUT
V
OUT
LOGIC
INPUT
SWITCH
OUTPUT
+3V
0V
t
ON(EN)
0V
V
OUT
50%
90%
tR < 20ns
tF < 20ns
10%
t
OFF(EN)
DG408/DG409
Improved, 8-Channel/Dual 4-Channel,
CMOS Analog Multiplexers
8 _______________________________________________________________________________________
Test Circuits/Timing Diagrams (continued)
Figure 4. Break-Before-Make Interval
Figure 5. Charge Injection
+15V
+2.4V
50Ω
EN
A0
A1
DG408
A2
GND
R
S
S_
EN
V
S
CHANNEL
SELECT
A0
A1
A2
V+
GND
S1-S8
V-
-15V
+15V
DG408
t
OPEN
tR < 20ns
tF < 20ns
ΔV
OUT
+3V
LOGIC
+5V
D
300Ω
V+
D
V-
-15V
V
OUT
35pF
V
OUT
CL = 1000nF
LOGIC
INPUT
INPUT
0V
V
OUT
SWITCH
OUTPUT
0V
+3V
0V
V
OUT
IS THE MEASURED VOLTAGE DUE TO CHARGE TRANSFER
ΔV
OUT
ERROR Q WHEN THE CHANNEL TURNS OFF.
Q = C
= ΔV
L
OUT
50%
80%
ONOFF OFF
DG408/DG409
Improved, 8-Channel/Dual 4-Channel,
CMOS Analog Multiplexers
_______________________________________________________________________________________ 9
Test Circuits/Timing Diagrams (continued)
Figure 6. Off Isolation Figure 7. Crosstalk
Figure 8. Source/Drain Capacitance
+15V
10nF
V
IN
S1
R
= 50Ω
S
S8
A0
A1
A2
OFF ISOLATION = 20log
GND
DG408
10nF
V+
D
EN
V-
-15V
V
OUT
V
IN
R
L
V
OUT
= 1kΩ
R
S
= 50Ω
V
IN
S1
S2
S8
A0
A1
A2
+15V
V+
DG408
GND
10nF
CROSSTALK = 20log
10nF
V-
-15V
V
EN
D
OUT
V
IN
+2.4V
V
OUT
RL = 1kΩ
+15V
V+
A2
CHANNEL
SELECT
A1
DG408
A0
V-
EN
GND
-15V
S1
S8
D
Meter
Impedance
Analyzer
or Equivalent
f = 1MHz
DG408/DG409
Improved, 8-Channel/Dual 4-Channel,
CMOS Analog Multiplexers
10 ______________________________________________________________________________________
Pin Configurations/Functional Diagrams/Truth Tables (continued)
TOP VIEW
A0
1
EN
2
V-
3
S1A
S2A
S3A
S4A
DA
DG409
4
5
6
7
8
DIP/SO/TSSOP
A2 A1 A0 EN
X
X
X
0
0
0
0
0
1
0
1
0
0
1
1
1
0
0
1
0
1
1
1
0
1
1
1
DG408
LOGIC “0” VAL ≤ 0.8V, LOGIC “1” VAH ≥ 2.4V
0
1
1
1
1
1
1
1
1
16
15
14
13
12
11
10
9
ON
SWITCH
None
1
2
3
4
5
6
7
8
A1
GND
V+
S1B
S2B
S3B
S4B
DB
V+ V-
S1A
S2A
S3A
S4A
S1B
S2B
S3B
S4B
CMOS DECODE LOGIC
A1 A0
DG409 4-CHANNEL DIFFERENTIAL MUX/DEMUX
0
1
1
1
1
ON
SWITCH
None
1
2
3
4
A1 A0 EN
X
0
0
1
1
LOGIC “0” V
X
0
1
0
1
DG409
≤ 0.8V, LOGIC “1” VAH ≥ 2.4V
AL
GND
DA
DB
EN
DG408/DG409
Improved, 8-Channel/Dual 4-Channel,
CMOS Analog Multiplexers
______________________________________________________________________________________ 11
Ordering Information (continued)
*
Contact factory for dice specifications.
**
Contact factory for availability and processing to MIL-STD-883.
PART TEMP RANGE PIN-PACKAGE
DG408DK -40°C to +85°C 16 CERDIP
DG408AK
16 CERDIP**
DG408MY/PR
16 SO***
DG408MY/PR-T
16 SO***
DG409CUE 0°C to +70°C 16 TSSOP
DG409CJ 0°C to +70°C 16 Plastic DIP
DG409CY 0°C to +70°C 16 Narrow SO
DG409C/D 0°C to +70°C Dice*
DG409EUE -40°C to +85°C 16 TSSOP
DG409DJ -40°C to +85°C 16 Plastic DIP
DG409DK -40°C to +85°C 16 CERDIP
DG409AK
12 CERDIP**
DG409MY/PR
16 SO***
DG409MY/PR-T
16 SO***
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
16 Plastic DIP P16-2
21-0043
16 Narrow SO S16-5
21-0041
16 SO S16-5
21-0041
16 CERDIP J16-3
21-0590
-55°C to +125°C
-55°C to +125°C
-55°C to +125°C
-55°C to +125°C
-55°C to +125°C
-55°C to +125°C
DG408/DG409
Improved, 8-Channel/Dual 4-Channel,
High-Performance, CMOS Analog Multiplexers
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Revision History
REVISION
NUMBER
REVISION
DATE
DESCRIPTION
PAGES
CHANGED
3 8/02 Changed operating voltage and TSSOP packaging ⎯
4 9/08 Added rugged plastic information 1, 11
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