19-4725; Rev 3; 8/02
Improved, 8-Channel/Dual 4-Channel,
CMOS Analog Multiplexers
General Description
Maxim’s redesigned DG408 and DG409 CMOS analog
multiplexers now feature guaranteed matching between
channels (8Ω max) and flatness over the specified sig-
nal 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/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.
____________________________Features
o
Pin-Compatible Plug-In Upgrades for
Industry Standard DG408/DG409
o
Guaranteed Matching Between Channels, 8Ω Max
o
Guaranteed On-Resistance Flatness, 9Ω Max
o
Guaranteed Low Charge Injection, 15pC Max
o
Low On-Resistance, 100Ω Max
o
Input Leakage, 5nA Max at +85°C
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
Ordering Information
PART
DG408CUE
DG408CJ
DG408CUE
TEMP RANGE
0°C to +70°C
0°C to +70°C
0°C to +70°C
PIN-PACKAGE
16 TSSOP
16 Plastic DIP
16 TSSOP
________________________Applications
Sample-and-Hold Circuits
Test Equipment
Guidance and Control Systems
Communications Systems
Data-Acquisition Systems
Audio Signal Routing
DG408CY
0°C to +70°C
16 Narrow SO
DG408C/D
0°C to +70°C
Dice*
DG408EUE
-40°C to +85°C
16 TSSOP
DG408DJ
-40°C to +85°C
16 Plastic DIP
DG408EUE
-40°C to +85°C
16 TSSOP
DG408DY
-40°C to +85°C
16 Narrow SO
DG408DK
-40°C to +85°C
16 CERDIP
DG408AK
-55°C to +125°C
16 CERDIP**
Ordering Information continued at end of data sheet.
*
Contact factory for dice specifications.
**Contact
factory for availability.
_________________Pin Configurations
TOP VIEW
_______________Functional Diagrams
V+
S1
V-
GND
A0
1
EN
2
V-
3
S1
4
S2
5
S3
6
S4
7
D
8
16
A1
15
A2
14
GND
S2
S3
S4
S5
S6
S7
S8
DECODERS/DRIVERS
D
DG408
13
V+
12
S5
11
S6
10
S7
9
S8
DIP/SO/TSSOP
DG409 appears at end of data sheet.
A0
A1
A2
EN
DG408 1-of-8 MUX /DEMUX
DG409 appears at end of data sheet.
________________________________________________________________
Maxim Integrated Products
1
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.
Improved, 8-Channel/Dual 4-Channel,
CMOS Analog Multiplexers
DG408/DG409
ABSOLUTE MAXIMUM RATINGS
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
TSSOP (derate 9.4mW/°C above +70°C) ....................755mW
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, 10s) .................................+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, V
AH
= +2.4V, V
AL
= +0.8V, T
A
= T
MIN
to T
MAX
, unless otherwise noted.)
PARAMETER
SWITCH
Analog Signal Range
Drain-Source
On-Resistance
On-Resistance Matching
Between Channels
On-Resistance Flatness
Source-Off Leakage Current
(Note 5)
V
ANALOG
r
DS(ON)
∆r
DS(ON)
r
FLAT
(Note 3)
I
S
= -1.0mA,
V
D
= ±10V
I
S
= -1.0mA,
V
D
= ±10V (Note 4)
I
S
= -1.0mA,
V
D
= ±5V or 0V
V
D
= +10V,
V
S
= ±10V,
V
EN
= 0V
V
D
= ±10V,
V
S
= +10V,
V
EN
= 0V
I
D(OFF)
V
D
= +10V,
V
S
= ±10V,
V
EN
= 0V
DG409
T
A
= +25°C
T
A
= T
MIN
to T
MAX
T
A
= +25°C
T
A
= T
MIN
to T
MAX
T
A
= +25°C
T
A
= T
MIN
to T
MAX
T
A
= +25°C
T
A
= T
MIN
to T
MAX
T
A
= +25°C
DG408
T
A
= T
MIN
to T
MAX
T
A
= +25°C
T
A
= T
MIN
to T
MAX
T
A
= +25°C
Drain-On Leakage Current
(Note 5)
V
D
= ±10V,
V
S
= ±10V,
sequence
each switch
on
DG408
T
A
= T
MIN
to T
MAX
T
A
= +25°C
DG409
T
A
= T
MIN
to T
MAX
C, D
A
C, D
A
C, D
A
C, D
A
C, D
A
-0.5
-5
-50
-1
-10
-100
-1
-5
-50
-1
-20
-100
-1
-10
-50
0.02
0.02
0.02
0.02
0.01
1.8
1.5
-15
60
15
100
125
8
10
9
12
0.5
5
50
1
10
100
1
5
50
1
20
100
1
10
50
nA
nA
nA
V
Ω
Ω
Ω
SYMBOL
CONDITIONS
MIN
TYP
MAX
(Note 2)
UNITS
I
S(OFF)
Drain-Off Leakage Current
(Note 5)
I
D(ON)
2
_______________________________________________________________________________________
Improved, 8-Channel/Dual 4-Channel,
CMOS Analog Multiplexers
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.)
PARAMETER
INPUT
Input Current with
Input Voltage High
Input Current with
Input Voltage Low
SUPPLY
Power-Supply Range
V
EN
= V
A
= 0V or 4.5V
Positive Supply Current
I+
V
EN
= 2.4V,
V
A(ALL)
= 0V or 2.4V
V
EN
= 2.4V,
V
A(ALL)
= 0V or 2.4V
T
A
= +25°C
T
A
= T
MIN
to T
MAX
T
A
= +25°C
T
A
= T
MIN
to T
MAX
T
A
= +25°C
T
A
= T
MIN
to T
MAX
T
A
= +25°C
T
A
= T
MIN
to T
MAX
T
A
= +25°C
T
A
= +25°C
T
A
= T
MIN
to T
MAX
T
A
= +25°C
T
A
= T
MIN
to T
MAX
T
A
= +25°C
I
AH
I
AL
V
A
= 2.4V or 15V
V
EN
= 0V or 2.4V,
V
A
= 0V
-1.0
-1.0
1.0
1.0
µA
µA
SYMBOL
CONDITIONS
MIN
TYP
MAX
(Note 2)
UNITS
DG408/DG409
±5
16
0.075
-1
-10
85
10
40
85
Negative Supply Current
DYNAMIC
Transition Time
Break-Before-Make Interval
Enable Turn-On Time
Enable Turn-Off Time
Charge Injection
(Note 3)
Off Isolation
(Note 6)
I-
±20
30
75
0.5
2
1
10
175
250
150
225
150
300
15
V
µA
mA
µA
t
TRANS
t
OPEN
t
ON(EN)
t
OFF(EN)
Figure 2
Figure 4
Figure 3
Figure 3
C
L
= 1.0nF,
V
S
= 0V,
R
S
= 0Ω, Figure 5
V
EN
= 0V,
R
L
= 1kΩ,
f = 100kHz, Figure 6
V
EN
= 2.4V,
f = 100kHz,
V
GEN
= 1V
P-P
,
R
L
= 1kΩ, Figure 7
f = 1MHz
f = 1MHz,
V
EN
= V
S
= 0V,
Figure 8
f = 1MHz,
V
EN
= 0.8V
V
D
= 0V,
Figure 8
f = 1MHz,
V
EN
= 2.4V
V
D
= 0V,
Figure 8
DG408
ns
ns
ns
ns
Q
2
pC
V
ISO
T
A
= +25°C
-75
dB
Crosstalk Between Input
Channels
Logic Input Capacitance
Source-Off Capacitance
V
CT
C
IN
C
S(OFF)
T
A
= +25°C
T
A
= +25°C
T
A
= +25°C
-92
dB
8
3
26
pF
pF
Drain-Off Capacitance
C
D(OFF)
T
A
= +25°C
DG409
DG408
T
A
= +25°C
DG409
25
14
37
pF
Drain-On Capacitance
C
D(ON)
+
C
S(ON)
pF
_______________________________________________________________________________________
3
Improved, 8-Channel/Dual 4-Channel,
CMOS Analog Multiplexers
DG408/DG409
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.)
PARAMETER
SWITCH
Analog Signal Range
Drain-Source On-Resistance
DYNAMIC
Transition Time
(Note 3)
t
TRANS
V
S1
= 8V,
V
S8
= 0V,
V
A
= 0V,
Figure 2
V
AL
= 0V,
V
S1
= 5V,
Figure 3
V
AL
= 0V,
V
S1
= 5V,
Figure 3
C
L
= 1.0nF,
V
S
= 0V,
R
S
= 0Ω
T
A
= +25°C
115
450
ns
V
ANALOG
r
DS(ON)
(Note 3)
I
S
= -1.0mA
V
D
= 3V or 10V
T
A
= +25°C
0
120
12
175
V
Ω
SYMBOL
CONDITIONS
MIN
TYP
MAX
(Note 2)
UNITS
Enable Turn-On Time
(Note 3)
t
ON(EN)
T
A
= +25°C
100
600
ns
Enable Turn-Off Time
(Note 3)
t
OFF(EN)
T
A
= +25°C
75
300
ns
Charge Injection
Q
T
A
= +25°C
2
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:
∆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 +25°C.
Note 6:
Off isolation = 20log V
D
/V
S
, where V
D
= output and V
S
= input to off switch.
4
_______________________________________________________________________________________
Improved, 8-Channel/Dual 4-Channel,
CMOS Analog Multiplexers
__________________________________________Typical Operating Characteristics
(T
A
= +25°C, unless otherwise noted.)
DG408/DG409
ON-RESISTANCE vs. V
D
(DUAL SUPPLIES)
DG408/9 TOC-01
ON-RESISTANCE vs. V
D
AND
TEMPERATURE (DUAL SUPPLIES)
V+ = 15V
V- = -15V
DG408/9 TOC-02
ON-RESISTANCE vs. V
D
(SINGLE SUPPLY)
360
320
DG408/9 TOC-03
160
140
±5V
120
r
DS(ON)
(Ω)
100
80
60
40
20
0
-20
-15 -10
-5
0
V
D
(V)
5
10
15
±15V
±20V
±10V
120
100
80
r
DS(ON)
(Ω)
60
40
20
0
400
+125°C
+85°C
+25°C
-55°C
r
DS(ON)
(Ω)
280
5V
240
200
160
120
80
40
10V
15V
20V
0
5
10
V
D
(V)
15
20
20
-15
-10
-5
0
V
D
(V)
5
10
15
ON-RESISTANCE vs. V
D
AND
TEMPERATURE (SINGLE SUPPLY)
DG408/9 TOC-04
OFF LEAKAGE vs. TEMPERATURE
DG408/9 TOC-05
ON LEAKAGE vs. TEMPERATURE
V+ = 15V
V- = -15V
DG408/9 TOC-05
160
140
120
r
DS(ON)
(Ω)
100
80
60
40
20
0
0
1000
100
OFF LEAKAGE (nA)
10
1
0.1
0.01
0.001
0.0001
I
COM (ON)
V+ = 15V
V- = -15V
V+ = 15V
V- = 0V
+125°C
+85°C
+25°C
-55°C
1000
100
ON LEAKAGE (nA)
10
1
0.1
0.01
I
COM (ON)
0.001
0.0001
-55 -35 -15
5
25 45
65
I
NO (OFF)
5
V
D
(V)
10
15
-55 -35 -15
5
25 45
65
85 105 125
85 105 125
TEMPERATURE (°C)
TEMPERATURE (°C)
CHARGE INJECTION vs. V
D
DG408/9 TOC-07
SUPPLY CURRENT vs. TEMPERATURE
I+
10
DG408/9 TOC-08
30
20
10
Q
j
(pC)
0
-10
-20
-30
-15
-10
-5
0
V
D
(V)
5
10
V+ = 12V
V- = 0V
V+ = 15V
V- = -15V
100
I+, I- (µA)
1
0.1
I-
0.01
V+ = 15V
V- = -15V
V
EN
= V
A
= 0V, 4.5V
-55 -35 -15
5
25 45
65
85 105 125
0.001
15
TEMPERATURE (°C)
_______________________________________________________________________________________
5
京公网安备 11010802033920号
EEWORLD
