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 differen-
tial 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
industry-standard DG508A/DG509A, respectively.
Maxim’s parts have faster enable switching times and
significantly lower leakage currents. The DG508A/
DG509A also consume significantly lower power, mak-
ing them ideal for portable equipment.
Applications
Control Systems
Data Logging Systems
Aircraft Heads-Up Displays
Data-Acquisition Systems
Signal Routing
Features
♦Improved Second Source
♦Operate from ±4.5V to ±18V Supplies
♦Symmetrical, Bidirectional Operation
♦Logic and Enable Inputs, TTL and
CMOS Compatible
♦Latchup-Proof Construction
♦Monolithic, Low-Power CMOS Design
DG508A/DG509A
Monolithic CMOS Analog Multiplexers
________________________________________________________________
Maxim Integrated Products
1
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.
BIN
QB
QC
QD
QA
V+
AIN
r01 r02 GND
S3
S4
S5
S6
S7
S8
-15V
DG508A
Typical Operating Circuits
19-0028; Rev 4; 5/10
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.
Devices are available in a lead(Pb)-free/RoHS-compliant pack-
age (except CERDIP). Specify lead-free by adding a plus (+)
to the part number when ordering.
*
Contact factory for dice specifications.
PART TEMP RANGE PIN-PACKAGE
DG508ACJ 0°C to +70°C 16 Plastic DIP
DG508ACWE 0°C to +70°C 16 Wide SO
DG508AC/D 0°C to +70°C Dice*
DG508ABK -20°C to +85°C 16 CERDIP
DG508ADJ -40°C to +85°C 16 Plastic DIP
DG508ADY -40°C to +85°C 16 Narrow SO
DG508AEWE -40°C to +85°C 16 Wide SO
DG508AAK -55°C to +125°C 16 CERDIP
DG508AMY/PR -55°C to +125°C 16 Narrow SO
DG509ACJ 0°C to +70°C 16 Plastic DIP
DG509ACWE 0°C to +70°C 16 Wide SO
DG509AC/D 0°C to +70°C Dice*
DG509ABK -20°C to +85°C 16 CERDIP
DG509ADJ -40°C to +85°C 16 Plastic DIP
DG509ADY -40°C to +85°C 16 Narrow SO
DG509AEWE -40°C to +85°C 16 Wide SO
DG509AAK -55°C to +125°C 16 CERDIP
DG509AMY/PR -55°C to +125°C 16 Narrow SO
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, VGND = 0V, TA= +25°C, 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, VSand VD(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 (TA= +70°C)
Plastic DIP (derate 10.53mW/°C above +70°C) ...........842mW
Narrow SO (derate 8.70mWI°C above +70°C) .............696mW
Wide SO (derate 9.52mW/°C above +70°C).................762mW
CERDIP (derate 10.00mW/°C above +70°C)................800mW
Operating Temperature Ranges:
DG50_ACJ/CWE ..................................................0°C to +70°C
DG50_ABK........................................................-20°C to +85°C
DG50_ADJ/DY/EWE..........................................-40°C to +85°C
DG50_AAK/MY ...............................................-55°C to +125°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
Soldering Temperature (reflow)
PDIP, Wide SO, Narrow SO, CERDIP containing lead(Pb)..+240°C
PDIP, Wide SO, Narrow SO lead(Pb)-free ....................+260°C
DG508A/DG509A
Note 1: Signals on S_ or D_ exceeding V+ or V- are clamped by internal diodes. Limit forward-diode current to maximum current ratings
DG508AA/M
DG509AA/M
DG508AD/E/B/C
DG509AD/E/B/C
PARAMETER SYMBOL CONDITIONS
MIN TYP MAX MIN TYP MAX
UNITS
SWITCH
Analog Signal VANALOG -15 +15 -15 +15 V
VD = 10V,
IS = -200μA 170 400 170 450
Drain-Source On-
Resistance RDS(ON)
Sequence each
switch on,
VA_L = 0.8V,
VA_H = 2.4V (Note 4)
VD = -10V,
IS = 200μA 130 400 130 450
Greatest Change
in Drain-Source
On-Resistance
Between Channels
RDS(ON)
R
DS(ON)
=R
DS(ON)
maxR
DS(ON)
min
R
DS(ON)
-10V VS 10V
6 6 %
VS = 10V, VD = -10V 0.002 0.5 0.002 1
Source Off-
Leakage Current IS(OFF) V
EN = 0V VS = -10V, VD = 10V -0.5 -0.005 -1 -0.005 nA
VD = 10V, VS = -10V 0.01 2 0.01 5
DG508A VD = -10V, VS = 10V -2 -0.015 -5 -0.015
VD = 10V, VS = -10V 0.005 2 0.005 5
Drain Off-
Leakage
Current DG509A
ID(OFF) V
EN = 0V
VD = -10V, VS = 10V -2 -0.008 -5 -0.008
nA
VS(all) = VD = 10V 0.015 2 0.015 5
DG508A VS(all) = VD = -10V -2 -0.03 -5 -0.03
VS(all) = VD = 10V 0.007 2 0.007 5
Drain On-
Leakage
Current DG509A
ID(ON)
Sequence each
switch on,
VA_L = 0.8V
VA_H = 2.4V
(Note 2) VS(all) = VD = -10V -2 -0.015 -5 -0.015
nA
DG508A/DG509A
Monolithic CMOS Analog Multiplexers
_______________________________________________________________________________________ 3
ELECTRICAL CHARACTERISTICS (continued)
(V+ = 15V, V- = -15V, VGND = 0V, TA= +25°C, unless otherwise noted.)
DG508AA/M
DG509AA/M
DG508AD/E/B/C
DG509AD/E/B/C UNITS
PARAMETER SYMBOL CONDITIONS
MIN TYP MAX MIN TYP MAX
LOGIC INPUT
VA_ = 2.4V -10 - 10 -0.002
Logic Input Current,
Input Voltage High IAH VA_ = 15V 0.006 10 0.006 10 μA
VEN = 2.4V -10 - 10 -0.002
Logic Input Current,
Input Voltage Low IAL All VA_ = 0V VEN = 0V -10 - -10 -0.002 μA
DYNAMIC
Multiplexer Switching ttransition Figure 1 0.6 1. 0 0.6 1. 0 μs
Break-Before-Make
Interval tOPEN Figure 3 0.2 0.2 μs
Enable Turn-On Time tON(EN) Figure 2 0.4 1.0 0.4 1.5 μs
Enable Turn-Off Time tOFF(EN) Figure 2 0.2 0.7 0.2 1.0 μs
Off-Isolation OIRR
VEN = 0V, RL= 1k, CL = l5pF,
VS = 7VRMS f = 500kHz (Note 3) 68 68 dB
Source Off-Capacitance CS(OFF) V
S = 0V, VEN = 0V, f = 140kHz 5 5 pF
IDG508A 25 25
Drain Off-
Capacitanc
e
DGS09A CD(OFF) V
S = 0V, VEN = 0V, f = 140kHz 12 12 pF
SUPPLY
Positive Supply Current I+ VEN = 2.4V, all VA_ = 0V or 2.4V 0.02 0.2 0.02 0.2 mA
Negative Supply Current I- VEN = 2.4V, all VA_ = 0V or 2.4V -0.1 -0.01 -0.1 -0.01 mA
Positive Supply Current
in Standby I+ VEN = 0V, all VA_ = 0V or 2.4V 0.02 0.2 0.02 0.2 mA
Negative Supply Current
in Standby I- VEN = 0V, all VA_ = 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, VGND = 0V, TA= TMIN to TMAX, unless otherwise noted.)
Note 2: ID(ON) is leakage from driver into on switch.
Note 3: Off-isolation = 20log
VS= input to off switch,
VD= output due to VS.
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/MY and DG509ADY/MY is ±9V.
IV I
IV I
S
D
DG508AA/M
DG509AA/M
DG508AD/E/B/C
DG509AD/E/B/C
PARAMETER SYMBOL CONDITIONS
MIN TYP MAX MIN TYP MAX
UNITS
SWITCH
Analog Signal
Range VANALOG -15 +15 -15 +15 V
VD = 10V,
IS = -200μA 500 550
Drain-Source On-
Resistance RDS(ON)
Sequence each
switch on,
VA_L = 0.8V,
VA_H = 2.4V
VD = -10V,
IS = 200μA 500 550
VS = 10V, VD = -10V +50 +50
Source Off-Leakage
Current IS(OFF) V
EN = 0V VS = -10V, VD = -10V -50 -50 nA
VD = 10V, VS = -10V +200 +100
DG508A VD = -10V, VS = -10V -200 -200
VD = 10V, VS = -10V +200 +100
Drain Off-
Leakage
Current DG509A
ID(OFF) V
EN = 0V
VD = -10V, VS = -10V -100 -100
nA
VS(all) = VD = 10V +200 +100
DG508A
VS(all) = VD = -10V -200 -100
VS(all) = VD = 10V +100 +100
Drain On-
Leakage
Current DG509A
ID(ON)
Sequence each
switch on,
VA_L = 0.8V,
VA_H = 2.4V
(Note 2) VS(all) = VD = -10V -100 -100
nA
LOGIC IN PUT
VA_ = 2.4V -30 -30
Logic Input Current,
Input Voltage High IAH VA_ = 15V +30 +30 μA
VEN = 2.4V -30 -30
Logic Input Current,
Input Voltage Low IAL All VA_ = 0V VEN = 0V -30 -30 μA
DG508A/DG509A
Monolithic CMOS Analog Multiplexers
_______________________________________________________________________________________ 5
PIN
DG508A DG509A
DIP/SO DIP/SO
NAME FUNCTION
1, 15, 16 — A0, A2,
A1 Address Input
— 1, 16 A0, A1 Address Input
2 2 EN Enable
3 3 V-
Negative-Supply Voltage
Input
4–7 — S1–S4
Analog Inputs,
Bidirectional
— 4–7 S1A–S4A
Analog Inputs,
Bidirectional
8 — D
Analog Outputs,
Bidirectional
— 8, 9 DA, DB Analog Outputs,
Bidirectional
9–12 — S8–S5
Analog Inputs,
Bidirectional
— 10–13 S4B–S1B
Analog Inputs,
Bidirectional
13 14 V+
Positive-Supply Voltage
Input
14 15 GND Ground
Pin Descriptions
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
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
VD
35pF
1MΩ
S2–S7
S8
D
+2.4V +15V
A0
A1
A2
GND
-15V
50Ω
LOGIC
INPUT
V-
V+
DG509A
EN S1 ±10V
SWITCH
OUTPUT
VDS
35pF
1MΩ
S1A–S4A,
DA, S2B, S3B
S4B
DB
+2.4V +15V
A0
A1
GND
-15V
50Ω
LOGIC
INPUT
V-
V+
Figure 1a. Switching-Time Test Circuit
DG508A
EN
V+
S1 -5V
SWITCH
OUTPUT
VD
35pF
1kΩ
S2–S7
D
+15V
A0
A1
A2 GND
-15V
50Ω
LOGIC
INPUT
V-
Figure 2a. DG508A Enable-Time Test Circuit
DG509A
EN
V+
S1B -5V
SWITCH
OUTPUT
VDS
35pF
1kΩ
S1A–S4A,
DA, S2B, S3B
DB
+15V
A0
A1 GND
-15V
50Ω
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
VD
35pF
1kΩ
ALL S
AND DA
DB, D
+2.4V +15V
A0, A1, (A2)
GND
-15V
50Ω
LOGIC
INPUT
V-
Figure 3. Break-Before-Make Test Circuit
topen
ttransition
ttransition
tOFF
(EN)
tON
(EN)
S8ON
3V
LOGIC INPUT
tr < 20ns
tf < 20ns
SWITCH
OUTPUT
VD
(SEE FIG. 1)
TRANSITION
TIME
SWITCH
OUTPUT
VD
(SEE FIG. 2)
TENABLE t(ON) t(OFF)
TIME
SWITCH
OUTPUT
VD
(SEE FIG. 3)
OPEN TIME
(B.B.M INTERVAL)
50%
0
VS1
VS8
0.8VS1
V0
VS
VS
50%
0V
0.9V0
0.1V0
0.8VS8
0
0
S1ON
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
0001 1
0011 2
0101 3
0111 4
1001 5
1011 6
1101 7
1111 8
Table 1b. DG509A Truth Table
A1 A0 EN ON SWITCH
X X 0 NONE
0011
0112
1013
1114
X = Don’t care.
X = Don’t care.
DG508A/DG509A
Monolithic CMOS Analog Multiplexers
8 _______________________________________________________________________________________
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 CLOCK
DG509A
1/2MM747C73
Q
J
K
Q
1/2MM747C73
Q
Typical Operating
Circuits (continued)
PACKAGE TYPE PACKAGE CODE DOCUMENT NO.
16 Plastic DIP P16-1 21-0043
16 Wide SO W16-2 21-0042
16 Narrow SO S16-5 21-0041
16 CERDIP J16-3 21-0045
Package Information
For the latest package outline information and land patterns,
go to www.maxim-ic.com/packages. Note that a “+”, “#”, or
“-” in the package code indicates RoHS status only. Package
drawings may show a different suffix character, but the drawing
pertains to the package regardless of RoHS status.
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 _____________________
9
© 2010 Maxim Integrated Products Maxim is a registered trademark of Maxim Integrated Products, Inc.
Revision History
REVISION
NUMBER
REVISION
DATE DESCRIPTION PAGES
CHANGED
Updated the “Drain-Source On-Resistance” parameter for both the TA = +25°C and
TA = TMIN to TMAX conditions. 2, 4
Deleted the QFN package from the Ordering Information,Absolute Maximum Ratings,
Pin Configurations,Pin Descriptions, and Package Information sections. 1, 2, 5, 8
4 5/10
Added the DG508AMY/PR and DG509AMY/PR parts to the Ordering Information table. 1
