General Description
Maxim's redesigned DG408 and DG409 CMOS analog
multiplexers now feature guaranteed matching between
channels (8
max) and flatness over the specified sig-
nal range (9
max). These low on-resistance muxes
(100
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 +85C.
The DG408 is a 1-of-8 multiplexer/demultiplexer and
the DG409 is a dual 4-channel multiplexer/demultiplex-
er. Both muxes operate with a +5V to +30V single sup-
ply 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 stan-
dard DG408 and DG409.
________________________Applications
Sample-and-Hold Circuits
Test Equipment
Guidance and Control Systems
Communications Systems
Data-Acquisition Systems
Audio Signal Routing
____________________________Features
o Pin-Compatible Plug-In Upgrades for
Industry Standard DG408/DG409
o Guaranteed Matching Between Channels, 8 Max
o Guaranteed On-Resistance Flatness, 9 Max
o Guaranteed Low Charge Injection, 15pC Max
o Low On-Resistance, 100 Max
o Input Leakage, 5nA Max at +85C
o Low Power Consumption, 1.25mW Max
o Rail-to-Rail Signal Handling
o Digital Input Controls TTL/CMOS Compatible
o ESD Protection >2000V per Method 3015.7
DG408/DG409
Improved, 8-Channel/Dual 4-Channel,
CMOS Analog Multiplexers
________________________________________________________________ Maxim Integrated Products
1
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7
8
A1
A2
GND
V+
S1
V-
EN
A0
TOP VIEW
DG408
S5
S6
S7
S8
D
S4
S3
S2
DIP/SO/TSSOP
DG409 appears at end of data sheet.
DECODERS/DRIVERS
A0
A1
A2
EN
S8
S7
S6
S5
S4
S3
S2
S1
D
V+
V-
GND
DG409 appears at end of data sheet.
DG408 1-of-8 MUX /DEMUX
Ordering Information
_________________Pin Configurations
_______________Functional Diagrams
19-4725; Rev 3; 8/02
PART
DG408CUE
DG408CY
DG408C/D
0C to +70C
0C to +70C
0C to +70C
TEMP RANGE
PIN-PACKAGE
16 TSSOP
16 Narrow SO
Dice*
Ordering Information continued at end of data sheet.
* Contact factory for dice specifications.
**Contact factory for availability.
DG408DJ
-40C to +85C
16 Plastic DIP
DG408DY
-40C to +85C
16 Narrow SO
DG408DK
-40C to +85C
16 CERDIP
DG408AK
-55C to +125C
16 CERDIP**
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.
DG408CUE
0C to +70C
16 TSSOP
DG408EUE
-40C to +85C
16 TSSOP
DG408CJ
0C to +70C
16 Plastic DIP
DG408EUE
-40C to +85C
16 TSSOP
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, V
AH
= +2.4V, V
AL
= +0.8V, T
A
= 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
= +70C)
TSSOP (derate 9.4mW/C above +70C) ....................755mW
Plastic DIP (derate 10.53mW/C above +70C) ..........842mW
TSSOP (derate 9.4mW/C above +70C) ....................755mW
Narrow SO (derate 8.70mW/C above +70C) ............696mW
CERDIP (derate 10.00mW/C above +70C) ...............800mW
Operating Temperature Ranges
DG408/DG409C_ ................................................0C to +70C
DG408/DG409D,E_ .........................................-40C to +85C
DG408/DG409AK ..........................................-55C to +125C
Storage Temperature Range .............................-65C to +150C
Lead Temperature (soldering, 10s) .................................+300C
V
D
= 10V,
V
S
= 10V,
sequence
each switch
on
V
D
= +10V,
V
S
= 10V,
V
EN
= 0V
V
D
= +10V,
V
S
= 10V,
V
EN
= 0V
I
S
= -1.0mA,
V
D
= 10V
I
S
= -1.0mA,
V
D
= 10V (Note 4)
V
D
= 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
125
r
DS(ON)
Drain-Source
On-Resistance
1.5
8
10
r
DS(ON)
On-Resistance Matching
Between Channels
UNITS
MIN
TYP
MAX
(Note 2)
SYMBOL
PARAMETER
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
15
V
ANALOG
Analog Signal Range
I
S
= -1.0mA,
V
D
= 5V or 0V
1.8
9
12
r
FLAT
On-Resistance Flatness
(Note 3)
T
A
= +25C
T
A
= T
MIN
to T
MAX
T
A
= +25C
T
A
= T
MIN
to T
MAX
T
A
= +25C
T
A
= T
MIN
to T
MAX
-0.5
0.01
0.5
T
A
= +25C
T
A
= T
MIN
to T
MAX
T
A
= +25C
T
A
= T
MIN
to T
MAX
T
A
= +25C
T
A
= T
MIN
to T
MAX
T
A
= +25C
T
A
= T
MIN
to T
MAX
T
A
= +25C
T
A
= 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, V
AH
= +2.4V, V
AL
= +0.8V, T
A
= T
MIN
to T
MAX
, unless otherwise noted.)
Off Isolation
(Note 6)
dB
-75
V
ISO
2
15
Q
Charge Injection
(Note 3)
ns
225
t
ON(EN)
Enable Turn-On Time
85
150
ns
10
40
t
OPEN
Break-Before-Make Interval
85
175
A
-1.0
1.0
I
AL
Input Current with
Input Voltage Low
A
-1.0
1.0
I
AH
Input Current with
Input Voltage High
A
-10
10
I-
Negative Supply Current
-1
1
mA
2
I+
Positive Supply Current
0.075
0.5
V
5
20
Power-Supply Range
16
30
A
75
UNITS
MIN
TYP
MAX
(Note 2)
SYMBOL
PARAMETER
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,
V
EN
= 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
T
A
= +25C
V
EN
= 0V or 2.4V,
V
A
= 0V
T
A
= +25C
V
A
= 2.4V or 15V
T
A
= T
MIN
to T
MAX
T
A
= T
MIN
to T
MAX
T
A
= +25C
T
A
= +25C
T
A
= +25C
T
A
= T
MIN
to T
MAX
T
A
= +25C
T
A
= +25C
T
A
= +25C
T
A
= T
MIN
to T
MAX
CONDITIONS
T
A
= +25C
T
A
= +25C
T
A
= +25C
T
A
= +25C
T
A
= +25C
V
EN
= 0V,
R
L
= 1k
,
f = 100kHz, Figure 6
C
L
= 1.0nF,
V
S
= 0V,
R
S
= 0
, Figure 5
Figure 3
V
EN
= 2.4V,
V
A(ALL)
= 0V or 2.4V
Figure 4
V
EN
= 2.4V,
V
A(ALL)
= 0V or 2.4V
V
EN
= V
A
= 0V or 4.5V
V
EN
= 2.4V,
f = 100kHz,
V
GEN
= 1V
P-P
,
R
L
= 1k
, Figure 7
f = 1MHz
f = 1MHz,
V
EN
= V
S
= 0V,
Figure 8
DG408
DG409
DG408
DG409
ns
250
t
TRANS
Transition Time
T
A
= T
MIN
to T
MAX
Figure 2
pC
ns
300
t
OFF(EN)
Enable Turn-Off Time
150
T
A
= T
MIN
to T
MAX
T
A
= +25C
Figure 3
INPUT
SUPPLY
DYNAMIC
DG408/DG409
Improved, 8-Channel/Dual 4-Channel,
CMOS Analog Multiplexers
4
_______________________________________________________________________________________
(Note 3)
CONDITIONS
C
L
= 1.0nF,
V
S
= 0V,
R
S
= 0
V
AL
= 0V,
V
S1
= 5V,
Figure 3
V
AL
= 0V,
V
S1
= 5V,
Figure 3
V
S1
= 8V,
V
S8
= 0V,
V
A
= 0V,
Figure 2
I
S
= -1.0mA
V
D
= 3V or 10V
pC
2
Q
Charge Injection
ns
75
300
t
OFF(EN)
Enable Turn-Off Time
(Note 3)
V
0
12
V
ANALOG
Analog Signal Range
ns
100
600
t
ON(EN)
Enable Turn-On Time
(Note 3)
ns
115
450
t
TRANS
Transition Time
(Note 3)
120
175
r
DS(ON)
Drain-Source On-Resistance
UNITS
MIN
TYP
MAX
(Note 2)
SYMBOL
PARAMETER
ELECTRICAL CHARACTERISTICS--Single Supply
(V+ = 12V, V- = 0V, GND = 0V, V
AH
= +2.4V, V
AL
= +0.8V, T
A
= 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:
R
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 +25C.
Note 6: Off isolation = 20log V
D
/V
S
, where V
D
= output and V
S
= input to off switch.
T
A
= +25C
T
A
= +25C
T
A
= +25C
T
A
= +25C
T
A
= +25C
SWITCH
DYNAMIC
DG408/DG409
Improved, 8-Channel/Dual 4-Channel,
CMOS Analog Multiplexers
_______________________________________________________________________________________
5
120
140
160
ON-RESISTANCE vs. V
D
(DUAL SUPPLIES)
100
DG408/9 TOC-01
0
20
40
60
-20
20
-15
15
-10
10
-5
5
0
80
V
D
(V)
5V
10V
15V
20V
r
DS(ON)
(
)
120
ON-RESISTANCE vs. V
D
AND
TEMPERATURE (DUAL SUPPLIES)
100
DG408/9 TOC-02
0
20
40
60
-15
15
-10
10
-5
5
0
80
V
D
(V)
+125C
+85C
+25C
-55C
r
DS(ON)
(
)
V+ = 15V
V- = -15V
280
320
360
400
ON-RESISTANCE vs. V
D
(SINGLE SUPPLY)
240
DG408/9 TOC-03
40
80
120
160
15
20
10
5
0
200
V
D
(V)
r
DS(ON)
(
)
5V
10V
15V
20V
120
140
160
ON-RESISTANCE vs. V
D
AND
TEMPERATURE (SINGLE SUPPLY)
100
DG408/9 TOC-04
0
20
40
60
15
10
5
0
80
V
D
(V)
r
DS(ON)
(
)
+125C
+85C
+25C
-55C
V+ = 15V
V- = 0V
30
CHARGE INJECTION vs. V
D
20
DG408/9 TOC-07
-30
-20
-10
0
-15
15
-10
10
-5
5
0
10
V
D
(V)
Q
j
(pC)
V+ = 12V
V- = 0V
V+ = 15V
V- = -15V
10
0.0001
-55
125
OFF LEAKAGE vs. TEMPERATURE
1
DG408/9 TOC-05
TEMPERATURE (
C)
OFF LEAKAGE (nA)
25
0.01
0.001
-35 -15
65
0.1
100
1000
45
85 105
5
I
NO (OFF)
I
COM (ON)
V+ = 15V
V- = -15V
10
0.0001
-55
125
ON LEAKAGE vs. TEMPERATURE
1
DG408/9 TOC-05
TEMPERATURE (
C)
ON LEAKAGE (nA)
25
0.01
0.001
-35 -15
65
0.1
100
1000
45
85 105
5
I
COM (ON)
V+ = 15V
V- = -15V
100
0.001
-55
125
SUPPLY CURRENT vs. TEMPERATURE
10
DG408/9 TOC-08
TEMPERATURE (
C)
I+, I- (
A)
25
0.1
0.01
-35 -15
65
1
45
85 105
5
I+
I-
V+ = 15V
V- = -15V
V
EN
= V
A
= 0V, 4.5V
__________________________________________Typical Operating Characteristics
(T
A
= +25C, unless otherwise noted.)
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