General Description
Maxim's DG508A and DG509A are monolithic CMOS
analog multiplexers (muxes): the DG508A is a single
8-channel (1-of-8) mux, and the DG509A is a differential
4-channel (2-of-8) mux.
Both devices guarantee break-before-make switching.
Maxim guarantees these muxes will not latch up if the
power supplies are turned off with the input signals still
present. Maxim also guarantees continuous operation
when these devices are powered by supplies ranging
from 4.5V to 18V.
The DG508A/DG509A are plug-in upgrades for the indus-
try-standard DG08A/DG509A, respectively. Maxim's parts
have lower on-resistance, faster enable switching times,
and significantly lower leakage currents. The DG508A/
DG509A also consume significantly lower power, making
them ideal for portable equipment.
Applications
Control Systems
Data Logging Systems
Aircraft Heads-Up Displays
Data-Acquisition Systems
Signal Routing
Features
o Improved Second Source
o Operate from 4.5V to 18V Supplies
o Symmetrical, Bidirectional Operation
o Logic and Enable Inputs, TTL and
CMOS Compatible
o Latchup-Proof Construction
o Monolithic, Low-Power CMOS Design
DG508A/DG509A
Monolithic CMOS Analog Multiplexers
________________________________________________________________ Maxim Integrated Products
1
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7
8
A0
A1
A2
GND
V+
S5
S6
S7
S8
TOP VIEW
DG508A
EN
V-
S3
S1
S2
S4
D
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7
8
A0
A1
GND
V+
S1B
S2B
S3B
S4B
DB
DG509A
DIP/SO
EN
V-
S3A
S1A
S2A
S4A
DA
Pin Configurations
Ordering Information
S1
-15V
D
ANALOG
OUTPUT
(INPUTS)
A0 A1 A2 EN
S2
V+
V-
GND
ANALOG
INPUT
(OUTPUTS)
+15V
+15V
ENABLE IN (MUX ON/OFF CONTROL)
CLOCK
IN
N.C.
N.C.
B
IN
Q
B
Q
C
Q
D
Q
A
V+
A
IN
r01 r02 GND
S3
S4
S5
S6
S7
S8
-15V
DG508A
Typical Operating Circuits
19-0028; Rev 3; 9/01
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.
Ordering Information continued at end of data sheet.
*Contact factory for dice specifications.
PART
TEMP RANGE
PIN-PACKAGE
DG508ACJ
0C to +70C
16 Plastic DIP
DG508ACWE
0C to +70C
16 Wide SO
DG508AC/D
0C to +70C
Dice*
DG508ABK
-20C to +85C
16 CERDIP
DG508ADJ
-40C to +85C
16 Plastic DIP
DG508ADY
-40C to +85C
16 Narrow SO
DG508AEGE
-40C to +85C
16 QFN
DG508AEWE
-40C to +85C
16 Wide SO
DG508AAK
-55C to +125C
16 CERDIP
Pin Configurations continued at end of data sheet.
8-CHANNEL SEQUENTIAL MUX/DEMUX
Typical Operating Circuits continued at end of data sheet.
Monolithic CMOS Analog Multiplexers
2
_______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(V+ = 15V, V- = -15V, GND = OV, T
A
= +25C, 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+ ....................................................................................+44V
GND ................................................................................ +25V
Digital Inputs, V
S
and V
D
(Note 1)..................-2V to (V+ + 2V)
or 20mA, whichever occurs first
Current (any terminal, except S or D) .................................30mA
Continuous Current, S or D .................................................20mA
Peak Current, S or D (pulsed at 1ms, 10% duty cycle max) ..40mA
Continuous Power Dissipation (T
A
= +70C)
Plastic DIP (derate 10.53mW/C above +70C) ..........842mW
QFN (derate 19.2mW/C above +70C) ....................1538mW
Narrow SO (derate 8.70mWIC above +70C) ............696mW
Wide SO (derate 9.52mW/C above +70C)................762mW
CERDIP (derate 10.00mW/C above +70C) ...............800mW
Operating Temperature Ranges:
DG50_ACJ/CWE/CGE ........................................0C to +70C
DG50_ABK ......................................................-20C to +85C
DGS0_ADJ/DY/EWE/EGE ................................-40C to +85C
DG50_AAK ....................................................-55C to +125C
Storage Temperature Range .............................-65C to +150C
Lead Temperature (soldering, 10s) .................................+300C
DG508A/DG509A
Note 1: Signals on S_, D_, or IN_ exceeding V+ or V- are clamped by internal diodes. Limit forward-diode current to maximum current
ratings
DG508AA
DG509AA
DG508AD/E/B/C
DG509AD/E/B/C
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
MIN
TYP
MAX
UNITS
SWITCH
Anal og S i g nal Rang e
V
ANALOG
-15
+15
-15
+15
V
V
D
= 10V,
I
S
= -200A
170
300
170
350
Drain-Source On-
Resistance
R
DS(ON)
Sequence each
switch on,
V
AL
= 0.8V,
V
AH
= 2.4V
(Note 4)
V
D
= 10V,
I
S
= -200A
130
300
130
350
Greatest Change in
Drain-Source On-
Resistance
Between Channels
R
DS(ON)
R
DS(ON)
=
-10V
V
S
10V
6
6
%
V
S
= 10V, V
D
= -10V
0.002
0.5
0.002
1
Source Off-
Leakage Current
I
S(OFF)
V
EN
= 0V
V
S
= -10V, V
D
= 10V
-0.5
-0.005
-1
-0.005
nA
V
D
= 10V, V
S
= -10V
0.01
2
0.01
5
DG508A
V
D
= 10V, V
S
= -10V
-2
-0.015
-5
-0.015
V
D
= 10V, V
S
= -10V
0.005
2
0.005
5
D r ai n O ff-
Leakag e
C ur r ent
DG509A
I
D(OFF)
V
EN
= 0V
V
D
= -10V, V
S
= 10V
-2
-0.008
-5
-0.008
nA
V
S(all)
= V
D
= 10V
0.015
2
0.015
5
DG508A
V
S(all)
= V
D
= -10V
-2
-0.03
-5
-0.03
V
S(all)
= V
D
= 10V
0.007
2
0.007
5
D r ai n O n-
Leakag e
C ur r ent
DG509A
I
D(ON)
Sequence each
switch on,
V
AL
= 0.8V
V
AH
= 2.4V
(Note 2)
V
S(all)
= V
D
= -10V
-2
-0.015
-5
-0.015
nA
R
R
R
DS ON
DS ON
DS ON
(
)
(
)
(
)
max
min
,
-
DG508A/DG509A
Monolithic CMOS Analog Multiplexers
_______________________________________________________________________________________
3
ELECTRICAL CHARACTERISTICS (continued)
(V+ = 15V, V- = -15V, GND = OV, T
A
= +25C, unless otherwise noted.)
DG508AA
DG509AA
DG508AD/E/B/C
DG509AD/E/B/C
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
MIN
TYP
MAX
UNITS
LOGIC INPUT
V
A
= 24V
-10
-0.002
10
-0.002
Logic Input Current, Input
Voltage High
I
AH
V
A
= 15V
0.006
10
0.006
10
A
V
EN
= 2.4V
-10
-0.002
10
-0.002
Logic Input Current, Input
Voltage Low
I
AL
All V
A
=
0V
V
EN
= 0V
-10
-0.002
-10
-0.002
A
DYNAMIC
M ul ti p l exer S w i tchi ng Ti m e
t
transition
Figure 1
0.6
1. 0
0.6
1. 0
s
Break-Before-Make
Interval
t
OPEN
Figure 3
0.2
0.2
s
Enable Turn-On Time
t
ON(EN)
Figure 2
0.4
1.0
0.4
1.5
s
Enable Turn-Off Time
t
OFF(EN)
Figure 2
0.2
0.7
0.2
1.0
s
Off-Isolation
OIRR
V
EN
= 0V, R
L
= 1k
, C
L
= l5pF,
V
S
= 7V
RMS
f = 500kHz (Note 3)
68
68
dB
Source Off-Capacitance
C
S(OFF)
V
S
= 0V, V
EN
= 0V, f = 140kHz
5
5
pF
IDG508A
25
25
Drain Off-
Capacitance DGS09A
C
D(OFF)
V
S
= 0V, V
EN
= 0V, f = 140kHz
12
12
pF
SUPPLY
Positive Supply Current
I+
V
EN
= 2.4V, all V
A
= 0V or 2.4V
0.02
0.2
0.02
0.2
mA
Negative Supply Current
I-
V
EN
= 2.4V, all V
A
= 0V or 2.4V
-0.1
-0.01
-0.1
-0.01
mA
Positive Supply Current in
Standby
I+
V
EN
= 0V, all V
A
= 0V or 2.4V
0.02
0.2
0.02
0.2
mA
Negative Supply Current
in Standby
I-
V
EN
= 0V, all V
A
= 0V or 2.4V
-0.1
-0.01
-0.1
-0.01
mA
Power-Supply Range for
Continuous Operation
V-, V+
(Notes 4, 5)
4.5
18.0
4.5
18.0
V
DG508A/DG509A
Monolithic CMOS Analog Multiplexers
4
_______________________________________________________________________________________
ELECTRICAL CHARACTERISTICS
(V+ = 15V, GND = 0V, T
A
= T
MIN
to T
MAX
, unless otherwise noted.)
Note 2: I
D(ON)
is leakage from driver into on switch.
Note 3: Off-isolation = 20log
V
S
= input to off switch,
V
D
= output due to V
S
.
Note 4: Electrical characteristics (such as on-resistance) change when power supplies other than 15V are used.
Note 5: For designs requiring single 5V or dual 5V operation, refer to Maxim's improved MAX338 and MAX339. Minimum operating
voltage for DG508ADY and DG509ADY is 9V.
IV I
IV I
S
D
DG508AA
DG509AA
DG508AD/E/B/C
DG509AD/E/B/C
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
MIN
TYP
MAX
UNITS
SWITCH
Analog Signal Range
V
ANALOG
-15
+15
-15
+15
V
V
D
= 10V,
I
S
= -200A
400
450
Drain-Source On-
Resistance
R
DS(ON)
S eq uence
each sw i tch on,
V
AL
= 0.8V ,
V
AH
= 2.4V
V
D
= 10V,
I
S
= -200A
400
450
V
S
= 10V, V
D
= -10V
+50
+50
Source Off-Leakage
Current
I
S(OFF)
V
EN
= 0V
V
S
= -10V, V
D
= -10V
-50
-50
nA
V
D
= 10V, V
S
= -10V
+200
+100
DG508A
V
D
= -10V, V
S
= -10V
-200
-200
V
D
= 10V, V
S
= -10V
+200
+100
Drain Off-
Leakage
Current
DG509A
I
D(OFF)
V
EN
= 0V
V
D
= -10V, V
S
= -10V
-100
-100
nA
V
S(all)
= V
D
= 10V
+200
+100
DG508A
V
S(all)
= V
D
= -10V
-200
-100
V
S(all)
= V
D
= 10V
+100
+100
Drain On-
Leakage
Current
DG509A
I
D(ON)
S eq uence each
sw i tch on,
V
AL
= 0.8V ,
V
AH
= 2.4V
(Note 2)
V
S(all)
= V
D
= -10V
-100
-100
nA
LOGIC INPUT
V
A
= 2.4V
-30
-30
Logic Input Current,
Input Voltage High
I
AH
V
A
= 15V
+30
+30
A
V
EN
= 2.4V
-30
-30
Logic Input Current,
Input Voltage Low
I
AL
All V
A
= 0V
V
EN
= 0V
-30
-30
A
DG508A/DG509A
Monolithic CMOS Analog Multiplexers
_______________________________________________________________________________________
5
PIN
DG508A
DG509A
DIP/SO
QFN
DIP/SO
QFN
NAME
FUNCTION
1, 15, 16
15, 14, 13
--
--
A0, A2, A1
Address Input
--
--
1, 16
15, 14
A0, A1
Address Input
2
16
2
16
EN
Enable
3
1
3
1
V-
Negative-Supply Voltage Input
47
25
--
--
S1S4
Analog Inputs, Bidirectional
--
--
47
25
S1AS4A
Analog Inputs, Bidirectional
8
6
--
--
D
Analog Outputs, Bidirectional
--
--
8, 9
6, 7
DA, DB
Analog Outputs, Bidirectional
912
710
--
--
S8S5
Analog Inputs, Bidirectional
--
--
1013
811
S4BS1B
Analog Inputs, Bidirectional
13
11
14
12
V+
Positive-Supply Voltage Input
14
12
15
13
GND
Ground
Pin Description
Functional Diagrams
V+
D
A2
A1
A0
EN
V-
GND
S1
S2
S3
S4
S5
S6
S7
S8
DG508A CMOS
DECODE LOGIC
DG508A
8-CHANNEL SINGLE ENDED MULTIPLEXER
V+
DA
A1
A0
EN
V-
GND
DB
S1A
S2A
S3A
S4A
S1B
S2B
S3B
S4B
DG509A CMOS
DECODE LOGIC
DG509A
DIFFERENTIAL 4-CHANNEL MULTIPLEXER
DG508A/DG509A
Monolithic CMOS Analog Multiplexers
6
_______________________________________________________________________________________
DG508A
EN
S1
10V
SWITCH
OUTPUT
V
D
35pF
1M
S2S7
S8
D
+2.4V
+15V
A0
A1
A2
GND
-15V
50
LOGIC
INPUT
V-
V+
DG509A
EN
S1
10V
SWITCH
OUTPUT
V
DS
35pF
1M
S1AS4A,
DA, S2B, S3B
S4B
DB
+2.4V
+15V
A0
A1
GND
-15V
50
LOGIC
INPUT
V-
V+
Figure 1a. Switching-Time Test Circuit
DG508A
EN
V+
S1
-5V
SWITCH
OUTPUT
V
D
35pF
1k
S2S7
D
+15V
A0
A1
A2
GND
-15V
50
LOGIC
INPUT
V-
Figure 2a. DG509A Enable-Time Test Circuit
DG509A
EN
V+
S1B
-5V
SWITCH
OUTPUT
V
DS
35pF
1k
S1AS4A,
DA, S2B, S3B
DB
+15V
A0
A1
GND
-15V
50
LOGIC
INPUT
V-
Figure 2b. DG509A Enable-Time Test Circuit
Figure 1b. Switching-Time Test Circuit
DG508A/DG509A
Monolithic CMOS Analog Multiplexers
_______________________________________________________________________________________
7
DG508A
DG509A
EN
+5V
SWITCH
OUTPUT
V
D
35pF
1k
ALL S
AND DA
DB, D
+2.4V
+15V
A0, A1, (A2)
GND
-15V
50
LOGIC
INPUT
V-
Figure 3. Break-Before-Make Test Circuit
t
open
t
transition
t
transition
t
OFF
(EN)
t
ON
(EN)
S
8
ON
3V
LOGIC INPUT
t
r
< 20ns
t
f
< 20ns
SWITCH
OUTPUT
V
D
(SEE FIG. 1)
TRANSITION
TIME
SWITCH
OUTPUT
V
D
(SEE FIG. 2)
TENABLE t
(ON)
t
(OFF)
TIME
SWITCH
OUTPUT
V
D
(SEE FIG. 3)
OPEN TIME
(B.B.M INTERVAL)
50%
0
V
S1
V
S8
0.8V
S1
V
0
V
S
V
S
50%
0V
0.9V
0
0.1V
0
0.8V
S8
0
0
S
1
ON
Figure 4. Timing Diagram for Figures 1, 2, and 3
Table 1a. DG508A Truth Table
A2
A1
A0
EN
ON SWITCH
X
X
X
0
NONE
0
0
0
1
1
0
0
1
1
2
0
1
0
1
3
0
1
1
1
4
1
0
0
1
5
1
0
1
1
6
1
1
0
1
7
1
1
1
1
8
Table 1 b. DG509A Truth Table
A1
A0
EN
ON SWITCH
X
X
0
NONE
0
0
1
1
0
1
1
2
1
0
1
3
1
1
1
4
X = Don't care.
X = Don't care.
DG508A/DG509A
Monolithic CMOS Analog Multiplexers
8
_______________________________________________________________________________________
Ordering Information (continued)
TOP VIEW
16
15
14
13
EN
A0
A1
A2
9
10
11
12
S6
S5
V+
GND
4
3
2
1
S3
S2
S1
V-
5
6
7
8
S4
D
S8
S7
DG508
16
15
14
13
EN
A0
A1
GND
9
10
11
12
S3B
S2B
S1B
V+
4
3
2
1
S3A
S2A
S1A
V-
5
6
7
8
S4A
DA
DB
S4B
DG509
QFN
QFN
Pin Configurations (continued)
*Contact factory for dice specifications.
PART
TEMP RANGE
PIN-PACKAGE
DG509ACJ
0C to +70C
16 Plastic DIP
DG509ACWE
0C to +70C
16 Wide SO
DG509AC/D
0C to +70C
Dice*
DG509ABK
-20C to +85C
16 CERDIP
DG509ADJ
-40C to +85C
16 Plastic DIP
DG509ADY
-40C to +85C
16 Narrow SO
DG509AEGE
-40C to +85C
16 QFN
DG509AEWE
-40C to +85C
16 Wide SO
DG509AAK
-55C to +125C
16 CERDIP
S1A
-15V
DB
DIFFERENTIAL
ANALOG
OUTPUTS
(INPUTS)
A0
A1
EN
S2A
V+
V-
GND
DIFFERENTIAL
ANALOG
INPUTS
(OUTPUTS)
+15V
DIFFERENTIAL 4-CHANNEL SEQUENTIAL MUX/DEMUX
CLOCK IN
RESET ENABLE
N.C.
J
K
Q
CLEAR GND
S3A
S4A
S1B
S2B
S3B
S4B
DA
-15V
CLOCK
DG509A
1/2MM747C73
Q
J
K
Q
GND
1/2MM747C73
Q
Typical Operating
Circuits (continued)
DG508A/DG509A
Monolithic CMOS Analog Multiplexers
_______________________________________________________________________________________
9
Chip Topographies
DG508A/DG509A
Monolithic CMOS Analog Multiplexers
10
______________________________________________________________________________________
Package Information
(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information
go to
www.maxim-ic.com/packages
.)
I
1
2
21-0091
PACKAGE OUTLINE, 16,20,28,32L QFN,
5x5x0.90 MM
32L QFN.EPS
DG508A/DG509A
Monolithic CMOS Analog Multiplexers
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.
Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 11
2001 Maxim Integrated Products
Printed USA
is a registered trademark of Maxim Integrated Products.
Package Information (continued)
(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information
go to
www.maxim-ic.com/packages
.)
I
2
2
21-0091
PACKAGE OUTLINE, 16,20,28,32L QFN,
5x5x0.90 MM
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