DG508A_MIL/509A_MIL
Vishay Siliconix
Document Number: 70067
S-00405—Rev. C, 21-Feb-00 www.vishay.com FaxBack 408-970-5600
5-1
Single 8-Ch/Differential 4-Ch CMOS Analog Multiplexers
(Obsolete for non-hermetic. Use DG408/409 as pin-for-pin replacements.)
  
Low On-Resistance: 240
TTL and CMOS Logic Compatible
Low Power: 30 mW
Break-Before-Make Switching
44-V Power Supply Rating
Transition T ime: 600 ns
Easily Interfaced
Low Power Consumption
Low System Crosstalk
Wide Analog Signal Range
Communication Systems
ATE
Data Acquisition Systems
Audio Signal Routing and Multiplexing
Medical Instrumentation

The DG508A_MIL, an 8-channel single-ended analog
multiplexer, is designed to connect one of eight inputs to a
common output as determined by a 3-bit binary address (A0,
A1, A2).
The DG509A_MIL, a dual 4-channel analog multiplexer, is
designed to connect one of four differential inputs to a common
output as determined by its 2-bit binary address (A0, A1) logic.
Break-before-make switching action protects against
momentary shorting of the input signals.
A channel in the on state conducts current equally well in both
directions. In the off state each channel blocks voltages up to
the power supply rails, normally 30 V peak-to-peak. An enable
(EN) function allows for device selection when several
multiplexers are used All control inputs, address (AX) and
enable (EN) are TTL or CMOS compatible over the full
specified operating temperature range.
Fabricated in the Vishay Siliconix Plus-40 process, the
absolute maximum voltage rating is extended to 44 V , allowing
increased operating headroom for standard 15-V signal
swings and operation with 20-V supplies. An epitaxial layer
prevents latch up.
The DG508A_MIL/509A_MIL are available in hermetic
packages. For plastic packages, use the DG408/409 as
pin-for-pin replacements.
For applications requiring address data latching, the
DG528/529 is recommended. DG408/409 is recommended
for higher precision applications. For wideband/video routing
and multiplexing, the DG538A is recommended.
     
S3
A0
S6
D
S4
A1
S8
S7
EN
Dual-In-Line
A2
V– GND
S1V+
S2S5
Decoders/Drivers
1
2
3
4
5
6
7
16
15
14
13
12
11
10
Top View
89
DG508A_MIL
Key
V–
NC
GND
S8
S1
S7
V+
S4
NC
D
NC
NC
S2
A1
S5
A2
S3
EN
S6
A0
910111213
4
5
6
7
8
1231920
14
15
16
17
18
Top View
LCC
Decoders/Drivers
DG508A_MIL
DG508A_MIL/509A_MIL
Vishay Siliconix
www.vishay.com S FaxBack 408-970-5600
5-2 Document Number: 70067
S-00405—Rev. C, 21-Feb-00
FUNCTIONAL BLOCK DIAGRAMS AND PIN CONFIGURATIONS
ORDERING INFORMATION - DG508A_MIL
Temp Range Package Part Number
0 to 70_C16-Pin Plastic DIP DG508ACJ
–25 to 85_C16-Pin CerDIP DG508ABK
–40 to 85_C16-Pin Narrow SOIC DG508ADY
55 125 C
16
-
Pin CerDIP
DG508AAK
55 125 C
16
-
Pin
CerDIP
DG508AAK/883
55 125 C
LCC-20 DG508AAZ/883
55 125 C
16
-
Pin Sidebraze
7705201EA
–55 to 125_C
16
-
Pin
Sidebraze
7705201EC
16
-
Pin Flat Pack
7705201FA
16
-
Pin
Flat
Pack
7705201FC
16
-
Pin Sidebraze
JM38510/19007BEA
16
-
Pin
Sidebraze
JM38510/19007BEC
TRUTH TABLE - DG508A_MIL
A2A1A0EN On Switch
X X X 0 None
0001 1
0011 2
0101 3
0111 4
1001 5
1011 6
1101 7
1111 8
Logic “0” = VALv 0.8 V
Logic
0
=
VALv
0
.
8
V
Logic “1” = VAHw 2.4 V
Logic 1 VAHw 2.4 V
X = Don’t Care
12
DG509A_MIL
Key
V–
NC
V+
Db
S1a
S4b
S1b
S4a
NC
Da
NC
NC
S2a
A1
S2b
GND
S3a
EN
S3b
A0
91011 13
4
5
6
7
8
1231920
14
15
16
17
18
Top View
LCC
Decoders/Drivers
A0
Da
S2b
A1
S3a
Db
S3b
EN
S4a S4b
Dual-In-Line and SOIC
GND
V– V+
S1a S1b
S2a
Decoders/Drivers
1
2
3
4
5
6
7
16
15
14
13
12
11
10
Top View
89
DG509A_MIL
ORDERING INFORMATION - DG509A_MIL
Temp Range Package Part Number
55 125 C
16
-
Pin CerDIP
DG509AAK
55 125 C
16
-
Pin
CerDIP
DG509AAK/883
–55 to 125_C LCC-20 DG509AAZ/883
16
-
Pin Sidebraze
JM38510/19008BEA
16
-
Pin
Sidebraze
JM38510/19008BEC
TRUTH TABLE - DG509A_MIL
A1A0EN On Switch
X X 0 None
0 0 1 1
0 1 1 2
1 0 1 3
1 1 1 4
Logic “0” = VALv 0.8 V
Logic
0
=
VALv
0
.
8
V
Logic “1” = VAHw 2.4 V
Logic 1 VAHw 2.4 V
X = Don’t Care
DG508A_MIL/509A_MIL
Vishay Siliconix
Document Number: 70067
S-00405—Rev. C, 21-Feb-00 www.vishay.com S FaxBack 408-970-5600
5-3
ABSOLUTE MAXIMUM RATINGS
Voltage Referenced to V–
V+ 44 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
GND 25 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Digital Inputsa, VS, VD(V–) –2 V to (V+) +2 V or. . . . . . . . . . . . . . . . . . . . . . . .
20 mA, whichever occurs first
Current (Any Terminal, Except S or D) 30 mA. . . . . . . . . . . . . . . . . . . . . . . . . .
Continuous Current, S or D 20 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Peak Current, S or D
(Pulsed at 1 ms, 10% Duty Cycle Max) 40 mA. . . . . . . . . . . . . . . . . . . . . . . . .
Storage Temperature (K Suffix) –65 to 150_C. . . . . . . . . . . . . . . . . . .
(J and Y Suffix) –65 to 125_C. . . . . . . . . . . . . .
Power Dissipation (Package)b
16-Pin CerDIPc900 mW. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
LCC-20c900 mW. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Notes:
a. Signals on SX, DX or INX exceeding V+ or V– will be clamped by internal
diodes. Limit forward diode current to maximum current ratings.
b. All leads soldered or welded to PC board.
c. Derate 12 mW/_C above 75_C.
SPECIFICATIONSa
P
Sbl
Test Conditions
Unless Otherwise Specified
Tb
A Suffix
–55 to 125_C
Ui
Parameter Symbol V+ = 15 V, V– = –15 V
VIN = 2.4 V, 0.8 VfTempbMindTypcMaxdUnit
Analog Switch
Analog Signal RangeeVANALOG Full –15 15 V
Drain-Source
On-Resistance rDS(on) VD = "10 V, IS = –200 mARoom
Full 240 400
500 W
rDS(on) Match DrDS(on) –10 V < VS < 10 V Room 6 %
Source Off
Leakage Current IS(off) VEN = 0 V, VS = "10 V
VD = #10 V Room
Full –1
–50 1
50
A
Drain Off
Lk C t
ID(off)
VEN = 0 V
VD
=
"10 V
DG508A_MIL Room
Full –10
–200 10
200
A
Leakage Current
I
D(off)
V
D =
"10
V
VS = #10 V DG509A_MIL Room
Full –10
–100 10
100 nA
Drain On
Lk C t
ID(on)
VS
=
VD
=
"10 V
DG508A_MIL Room
Full –10
–200 10
200
Leakage Current
I
D(on)
V
S =
V
D =
"10
V
DG509A_MIL Room
Full –10
–100 10
100
Digital Control
Logic Input Current
ItVlt Hih
IAH
VA = 2.4 V Room
Full –10
–30 –0.002
A
gp
Input V oltage High
I
AH VA = 15 V Room
Full 0.006 10
30 mA
Logic Input Current
Input V oltage Low IAL VEN = 0 V, 2.4 V, VA = 0 V Room
Full –10
–30 –0.002
Dynamic Characteristics
Transition Time tTRANS See Figure 2 Room 0.6 1.0
Break-Before-Make T ime tOPEN See Figure 4 Room 0.2
ms
Enable T urn-On T ime tON(EN)
Room 1 1.5 m
s
Enable T urn-Of f Time tOFF(EN)
Room 0.4 1.0
Charge Injection Q See Figure 5 Room 6 pC
Off Isolation OIRR VEN = 0 V, RL = 1 kW, CL = 15 pF
VS = 7 VRMS, f = 500 kHz Room 68 dB
Logic Input Capacitance Cin f = 1 MHz Room 8
F
Source Off Capacitance CS(off) VEN = 0 V, VS = 0 V, f = 140 kHz Room 6
pF
Drain Off Capacitance
CD(off)
VEN = 0 V, VD = 0 V
f 140 kH
DG508A_MIL Room 25
pF
Drain
Off
Capacitance
C
D(off)
EN ,D
f = 140 kHz DG509A_MIL Room 12
DG508A_MIL/509A_MIL
Vishay Siliconix
www.vishay.com S FaxBack 408-970-5600
5-4 Document Number: 70067
S-00405—Rev. C, 21-Feb-00
SPECIFICATIONSa
P
Sbl
Test Conditions
Unless Otherwise Specified
Tb
A Suffix
–55 to 125_C
Ui
Parameter Symbol V+ = 15 V, V– = –15 V
VIN = 2.4 V, 0.8 VfTempbMindTypcMaxdUnit
Power Supplies
Positive Supply Current I+
=
Room 1.3 2.4
mA
Negative Supply Current I–
EN =
.
Room –1.5 –0.7
mA
Notes:
a. Refer to PROCESS OPTION FLOWCHART.
b. Room = 25_C, Full = as determined by the operating temperature suffix.
c. T ypical values are for DESIGN AID ONL Y, not guaranteed nor subject to production testing.
d. The algebraic convention whereby the most negative value is a minimum and the most positive a maximum, is used in this data sheet.
e. Guaranteed by design, not subject to production test.
f. VIN = input voltage to perform proper function.
TYPICAL CHARACTERISTICS (25_C UNLESS NOTED)
500
–20 –10 0 10 20
400
300
200
100
0
2.5
2.0
1.5
1.0
0.5
0
Input Switching Threshold vs. V+ and V–
Supply Voltages
500
16
–15 –15–10 –5 0 5 10 15
14
12
10
8
6
4
2
0
450
400
350
300
250
200
150
100
50
0–10 –5 0 5 10 15
rDS(on) vs. VD and Power Supply
rDS(on) vs. VD and TemperatureCharge Injection vs. Analog Voltage (VS)
V+, V– Positive and Negative Supplies (V)VD – Drain Voltage (V)
”5 ”10 ”15 ”20
V+ = 15 V
V– = –15 V
V+ = 15 V
V– = –15 V
(V)
T
V
Q (pC)
–15 –5 5 15
5 V
7.5 V
10 V
15 V
20 V
125_C
25_C
–55_C
rDS(on)
– Drain-Source On-Resistance (
rDS(on)
– Drain-Source On-Resistance (
VD – Drain Voltage (V)VS – Source Voltage (V)
)
)
DG508A_MIL/509A_MIL
Vishay Siliconix
Document Number: 70067
S-00405—Rev. C, 21-Feb-00 www.vishay.com S FaxBack 408-970-5600
5-5
  _  
6
4
2
0
–2
–4
–6
V+ = 15 V
V– = –15 V
100 k10 k 1 M
Supply Current vs. Switching Frequency
I+, I– (mA)
I+
I–
0
–20
–40
–60
–80
–100
–120
0
–20
–40
–60
–80
–100
–120
1400
–55
1200
1000
800
600
400
200 –35 –15 5 25 45 65 105 125
85
1100
10 12 14 16 18 20 22
1000
900
800
700
600
500
400
300
200
1 k 1 M 10 M10 k 100 k
CerDIP
Plastic
V+ = 15 V
V– = –15 V
ref. 0 dBm
V+ = 15 V
V– = –15 V
ref. 0 dBm
100 k10 k 1 M1 k 10 M
Off Isolation vs. Frequency
Crosstalk vs. Frequency
Switching Time vs. Temperature
Switching Time vs. Positive Supply Voltage
Temperature (_C)
ISOL (dB)
tTRANS , t OPEN (ns)
V+ = 15 V
V– = –15 V
tTRANS
tTRANS
tOPEN
tOPEN
(dB)
TALK
X
CerDIP
Plastic
V+ = 15 V
V– = –15 V
VD = 14 V
ID(on), ID(off)
IS(off)
100 nA
10 nA
1 nA
100 pA
10 pA
–55 –35 –15 5 25 45 65 85 105 125
, IS
Temperature (_C)
Leakages vs. Temperature
ID
f – Frequency (Hz)
V+ – Positive Supply (V)
f – Frequency (Hz)
f – Frequency (Hz)
tTRANS , t OPEN (ns)
DG508A_MIL/509A_MIL
Vishay Siliconix
www.vishay.com S FaxBack 408-970-5600
5-6 Document Number: 70067
S-00405—Rev. C, 21-Feb-00
TYPICAL CHARACTERISTICS (25_C UNLESS NOTED)
25
51015
15
5
–5
–15
–25
(pA)
IS
IS(off) vs. Analog Voltage
IS(off)
ID(on), ID(off) vs. Analog Voltage
(pA)
ID
20
0
–20
–40
–60–15 –10 –5 5 15100
Charge Injection vs. Power Supply Voltage
12
10
8
0510
6
4
15 20 25
2
Q (pF)
0
V+ = 15 V
V– = –15 V
VS = –VD
TA = 25_C
V+ = 15 V
V– = –15 V
TA = 25_C
ID(off)
ID(on)
VS – Source Voltage (V)
V+, V– Positive and Negative Supplies (V)
VD – Drain Voltage (V)
–15 –10 –5 0
SCHEMATIC DIAGRAM (TYPICAL CHANNEL)
FIGURE 1.
V+
EN
V–
AX
+V–
V+
A0
Decode/
Drive
S1
Sx
D
V+
V–
+
V–
+
V+
V+
V+
V+
V–
V–
GND
DG508A_MIL/509A_MIL
Vishay Siliconix
Document Number: 70067
S-00405—Rev. C, 21-Feb-00 www.vishay.com FaxBack 408-970-5600
5-7
 
FIGURE 2. T ransition Time
A1
A0
A2
A1
A0
+15 V
–15 V
EN
V+
V–GND D
35 pF
VO
S1
S2 – S7
S8
50 300
#10 V
"10 V
+15 V
–15 V
EN
V+
V–GND 35 pF
VO
S1
S1a – S4a, Da
S4b
50 300
#10 V
"10 V
Db
Logic
Input
Switch
Output
VS8
VO
tTRANS
tr <20 ns
tf <20 ns
S8 ONS1 ON tTRANS
0 V
VS1
50%
90%
90%
3 V
0 V
DG508A_MIL
DG509A_MIL
FIGURE 3. Enable Switching T ime
Logic
Input
Switch
Output
VO
tr <20 ns
tf <20 ns
3 V
0 V
0 V
tOFF(EN)
tON(EN)
50%
90%
10%
EN S1
S2 – S8
A0
A1
A2
50 1 k
VO
V+
GND V– D
– 5 V
35 pF
–15 V
+15 V
S1b
S1a – S4a, Da
S2b – S4b
Db
EN
A0
A1
50 1 k
VO
V+
GND V–
– 5 V
35 pF
–15 V
+15 V
DG508A_MIL
DG509A_MIL
DG508A_MIL/509A_MIL
Vishay Siliconix
www.vishay.com FaxBack 408-970-5600
5-8 Document Number: 70067
S-00405—Rev. C, 21-Feb-00
 
FIGURE 4. Break-Before-Make Interval
50%
80%
Logic
Input
Switch
Output
VO
VS
tOPEN
tr <20 ns
tf <20 ns
0 V
3 V
0 V
EN V+
GND V–
+5 V
35 pF
–15 V
+15 V
+2.4 V
A2Db, D
All S and Da
300 W
VO
50 W
A1
A0DG508A_MIL
DG509A_MIL
FIGURE 5. Charge Injection
A0
EN
A1
A2
VO
V+
GND V–
D
–15 V
+15 V
Vg
RgSX
CL
10 nF
Channel
Select
3 V
0 V OFF ON
Logic
Input
Switch
Output
DVO
DVO is the measured voltage due to charge transfer
error Q, when the channel turns off.
Q = CL x DVO
OFF
FIGURE 6. Off Isolation
RL
1 kW
VO
V+
GND V–
–15 V
+15 V
A2
D
A1
A0
S8
SX
VS
EN
Rg = 50 W
Off Isolation = 20 log VOUT
VIN
VIN
FIGURE 7. Crosstalk
RL
1 kW
VO
V+
GND V–
–15 V
+15 V
A2
D
A1
A0
S8
SX
VS
EN
Rg = 50 W
Crosstalk = 20 log VOUT
VIN
VIN S1
DG508A_MIL/509A_MIL
Vishay Siliconix
Document Number: 70067
S-00405—Rev. C, 21-Feb-00 www.vishay.com FaxBack 408-970-5600
5-9
 
FIGURE 8. Insertion Loss FIGURE 9. Source Drain Capacitance
RL
1 k
A2
VO
D
Rg = 50
Insertion Loss = 20 log VOUT
A1
VIN
A0
VSS1V+
GND V–
–15 V
+15 V
EN f = 1 MHz
S1
D
EN
+15 V
–15 V
GND
V+
V–
Meter
HP4192A
Impedance
Analyzer
or Equivalent
S8
A1
A2
A0
Channel
Select

V+
Positive Supply
Voltage
(V)
V–
Negative Supply
Voltage
(V)
VIN
Logic Input Voltage
VINH(min)/VINL(max)
(V)
VS or VD
Analog Voltage
Range
(V)
15
10
12
8b
–15
–12
–10
–8
2.4/0.8
2.4/0.8
2.4/0.6
2.4/0.4
–15 to 15
–12 to 12
–10 to 10
–8 to 8
Notes:
a. Application Hints are for DESIGN AID ONLY, not guaranteed and not subject to production testing.
b. Operation below 8 V is not recommended.
Overvoltage Protection
A very convenient form of overvoltage protection consists of
adding two small signal diodes (1N4148, 1N914 type) in series
with the supply pins (see Figure 11). This arrangement
effectively blocks the flow of reverse currents. It also floats the
supply pin above or below the normal V+ or V– value. In this
case the overvoltage signal actually becomes the power
supply of the IC. From the point of view of the chip, nothing has
changed, as long as the difference between VS and the V– rail
doesn’t exceed +44 V . The addition of these diodes will reduce
the analog signal range to 1 V below V+ and 1 V above V–, but
it preserves the low channel resistance and low leakage
characteristics.
1N4148
DG508A_MIL
D
–15 V
1N4148
V+ v Vg v V–
SX
Vg
V+
V–
+15 V
FIGURE 10. Overvoltage Protection Using Blocking Diodes
Internal
Junction
Internal
Junction
DG508A_MIL/509A_MIL
Vishay Siliconix
www.vishay.com FaxBack 408-970-5600
5-10 Document Number: 70067
S-00405—Rev. C, 21-Feb-00

(Multiplexer On-Off Control)
Analog
Inputs
(Outputs)
CLOCK
IN
NC
ENABLE
IN
Analog
Output
(Input)
DG508A_MIL
D
EN
DM7493
+15 V
GND
+5 V
Analog
Inputs
(Outputs) Analog
Output
(Input)
+15 V –15 V
DG509A_MIL
EN
GND
V+ V–
Differential Differential
CLOCK
IN
NC
ENABLE
Q
GND
+5 V
NC
Q
RESET
J
K
CLK
J
K
CLK
CLEAR CLEAR
1/2 MM74C73 1/2 MM74C73
S1
S8
A0A1A2
QB
QC
QD
QA
r01 r02
S1a
S4a
S1b
S4b
Da
Db
A0A1
Q Q
FIGURE 11. 8-Channel Sequential Multiplexer/ Demultiplexer
FIGURE 12. Differential 4-Channel Sequential Multiplexer/ Demultiplexer
+15 V –15 V
GNDV+ V–
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