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Электронный компонент: IH6108

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12-128
Semiconductor
April 1999
IH6108
8-Channel
CMOS Analog Multiplexer
Features
Ultra Low Leakage - I
D(OFF)
100pA (Typ)
r
DS(ON)
< 400
Over Full Signal and Temperature
Range
Power Supply Quiescent Current Less Than 100
A
14V Analog Signal Range
No SCR Latchup
Break-Before-Make Switching
Binary Address Control (3 Address Inputs Control 8
Channels)
TTL and CMOS Compatible Strobe Control
Pin Compatible with DG508A, HI-508 and ADG508A
Internal Diode in Series with V+ for Fault Protection
Description
The IH6108 is a CMOS 1-of-8 multiplexer. The part is a plug-
in replacement for the DG508A. Three-line decoding is used
so that the 8 channels can be controlled by 3 Address
inputs; additionally a fourth input is provided for use as a
system enable. When the ENABLE input is high (5V), a
channel is selected by the three Address inputs, and when
low (0V) all channels are off. The 3 Address inputs are TTL
and CMOS logic compatible, with a "1" corresponding to any
voltage greater than 2.4V.
Pinout
IH6108
(CERDIP, PDIP)
TOP VIEW
Functional Diagram
Part Number Information
PART
NUMBER
TEMP.
RANGE (
o
C)
PACKAGE
PKG.
NO.
IH6108MJE
-55 to 125
16 Ld CERDIP
F16.3
IH6108MJE/883B
-55 to 125
16 Ld CERDIP
F16.3
IH6108CJE
0 to 70
16 Ld CERDIP
F16.3
IH6108CPE
0 to 70
16 Ld PDIP
E16.3
14
15
16
9
13
12
11
10
1
2
3
4
5
7
6
8
A
0
EN
V-
S
2
S
3
S
4
A
1
GND
S
5
S
6
S
7
A
2
S
8
V+
S
1
D
TRUTH TABLE
A
2
A
1
A
0
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
NOTE: A
0
, A
1
, A
2
Logic "1" = V
AH
2.4V, V
ENH
4.5V
Logic "0" = V
AL
0.8V.
S
1
S
2
S
3
S
4
S
5
S
7
S
8
S
6
V
OUT
D
ADDRESS DECODER
1 OF 8
ENABLE
INPUT
A
0
A
1
A
2
EN
3 LINE BINARY ADDRESS INPUT
ABOVE EXAMPLE SHOWS
(1 0 1) AND EN AT 5V
CHANNEL 6 TURNED ON.
CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures.
Copyright
Harris Corporation 1997
File Number
3156.2
OBSOLETE PR
ODUCT
POSSIBLE SUBSTITUTE PR
ODUCT
DG408, DG508A, HI-0508(A)
12-129
Absolute Maximum Ratings
Thermal Information
V
IN
(A, EN) to Ground . . . . . . . . . . . . . . . . . . . . . . . . . . -15V to 15V
V
S
or V
D
to V+ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0V, -36V
V
S
to V
D
to V- . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0V, 36V
V+ to Ground . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18V
V- to Ground . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .-18V
Current (Any Terminal) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30mA
Current (Analog Source or Drain) . . . . . . . . . . . . . . . . . . . . . . 20mA
Operating Conditions
Temperature Range
C Suffix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .0
o
C to 70
o
C
M Suffix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -55
o
C to 125
o
C
Thermal Resistance (Typical, Note 1)
JA
(
o
C/W)
JC
(
o
C/W)
PDIP Package . . . . . . . . . . . . . . . . . . .
100
N/A
CERDIP Package . . . . . . . . . . . . . . . .
75
20
Maximum Junction Temperature (Hermetic Package) . . . . . . . . 175
o
C
Maximum Junction Temperature (Plastic Package) . . . . . . . . 150
o
C
Maximum Storage Temperature Range . . . . . . . . . .-65
o
C to 150
o
C
Maximum Lead Temperature (Soldering 10s) . . . . . . . . . . . . . 300
o
C
CAUTION: Stresses above those listed in "Absolute Maximum Ratings" may cause permanent damage to the device. This is a stress only rating and operation
of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied.
NOTE:
1.
JA
is measured with the component mounted on an evaluation PC board in free air.
CAUTION: Stresses above those listed in "Absolute Maximum Ratings" may cause permanent damage to the device. This is a stress only rating and operation of
the device at these or any other conditions above those indicated in the operational sections of this specification is not implied.
Electrical Specifications
V+ = 15V, V- = -15V, V
EN
= +5V, Ground = 0V, Unless Otherwise Specified, (Note 4)
PARAMETER
MEASURED
TERMINAL
NO
TESTS
PER
TEMP
TYP
25
o
C
TEST CONDITIONS
M SUFFIX (
o
C)
C SUFFIX (
o
C)
UNITS
-55
25
125
0
25
70
SWITCH
r
DS(ON)
S to D
8
180
V
D
= +10V, I
S
= -1.0mA
Sequence Each Switch On
V
AL
= 0.8V, V
AH
= 2.4V
300
300
400
350
350
450
8
150
V
D
= -10V, I
S
= -1.0mA
Sequence Each Switch On
V
AL
= 0.8V, V
AH
= 2.4V
300
300
400
350
350
450
r
DS(ON)
20
r
DS(ON)
=
V
S
=
10V
-
-
-
-
-
-
%
I
S(OFF)
S
8
0.002
V
S
= 10V, V
D
= -10V
-
0.5
50
-
1
50
nA
8
0.002
V
S
= -10V, V
D
= 10V,
V
EN
= 0.8V
-
0.5
50
-
1
50
nA
I
D(OFF)
D
1
0.03
V
D
= 10V, V
S
= -10V,
V
EN
= 0.8V
-
2
100
-
5
100
nA
1
0.03
V
D
= -10V, V
S
= 10V,
V
EN
= 0.8V
-
2
100
-
5
100
nA
I
D(ON)
D
8
0.1
V
S(ALL)
= V
D
= 10V,
Sequence Each Switch On
V
AL
= 0.8V, V
AH
= 2.4V
-
2
100
-
5
100
nA
8
0.1
V
S(ALL)
= V
D
= -10V,
Sequence Each Switch On
V
AL
= 0.8V, V
AH
= 2.4V
-
2
100
-
5
100
nA
INPUT
I
AN(ON)
or I
A(on)
A
0
, A
1
, or A
2
Inputs
A
0
, A
1
, A
2
3
0.01
V
A
= 0V
-
-10
-30
-
-10
-30
A
I
AN(OFF)
I
A(off)
3
0.01
V
A
= 14V
-
10
30
-
10
30
A
I
A
3
0.01
V
EN
= 5V, All V
A
= 0V
(Address Pins)
-
-10
-30
-
-10
-30
A
EN
1
0.01
V
EN
= 0V, All V
A
= 0V
(Address Pins)
-
-10
-30
-
-10
-30
A
r
DS ON
(
)
MAX
r
DS ON
(
)
MIN
r
DS ON
(
)
AV G
----------------------------------------------------------------------------------- ,
IH6108
12-130
DYNAMIC
t
TRANSITION
D
0.3
See Figure 1
-
1
-
-
-
-
s
t
OPEN
D
0.2
See Figure 2
-
-
-
-
-
-
s
t
ON(EN)
D
0.6
See Figure 3
-
1.5
-
-
-
-
s
t
OFF(EN)
D
0.4
See Figure 3
-
1
-
-
-
-
s
"OFF" Isolation
D
60
V
EN
= 0V, R
L
= 200
,
C
L
= 3pF, V
S
= 3V
RMS
,
f = 500kHz
-
-
-
-
-
-
dB
C
S(OFF)
S
5
V
S
= 0V, V
EN
= 0V,
f = 140kHz to 1MHz
-
-
-
-
-
-
pF
C
D(OFF)
D
25
V
D
= 0V,V
EN
= 0V,
f = 140kHz to 1MHz
-
-
-
-
-
-
pF
C
DS(OFF)
D to S
1
V
S
= 0V, V
D
= 0V,
V
EN
= 0V,
f = 140kHz to 1MHz
-
-
-
-
-
-
pF
SUPPLY
Positive Supply
Current
V+
1
40
V
EN
= 5V,
All V
A
= 0V or 5V
-
-
200
-
-
1000
A
Negative Supply
Current
V-
1
2
V
EN
= 5V,
All V
A
= 0V or 5V
-
-
100
-
-
1000
A
Positive Standby
Current
V+
1
1
V
EN
= 0V,
All V
A
= 0V or 5V
-
-
100
-
-
1000
A
Negative Standby
Current
V-
1
1
V
EN
= 0V,
All V
A
= 0V or 5V
-
-
100
-
-
1000
A
NOTE:
2. See "Enable Input Strobing Levels", in Application Section.
Electrical Specifications
V+ = 15V, V- = -15V, V
EN
= +5V, Ground = 0V, Unless Otherwise Specified, (Note 4) (Continued)
PARAMETER
MEASURED
TERMINAL
NO
TESTS
PER
TEMP
TYP
25
o
C
TEST CONDITIONS
M SUFFIX (
o
C)
C SUFFIX (
o
C)
UNITS
-55
25
125
0
25
70
Switching Information
FIGURE 1. t
TRANSITION
SWITCHING TEST CIRCUIT AND WAVEFORMS
S
2
S
3
S
4
S
1
S
5
S
6
S
7
S
8
A
0
A
1
A
2
10V
10V
+15V
-15V
PROBE
D
V
OUT
V+
IH6108
EN
PROBE IMPEDANCE
R
P
1M
C
P
30pF
C
P
R
P
V-
GND
V
A
50
3V
50%
0.8V
V
OUT
V
S1
= +10V
V
S8
= -10V
+10V
+9V
-9V
t
trans
(1-8)
S8 ON
S1 ON
-10V
+10V
S8 ON
-9V
-10V
t
trans
(1-8)
S1 ON
V
A
t
r
< 100ns
t
f
< 100ns
t
trans
(8-1)
t
trans
(8-1)
V
OUT
V
S1
= -10V
V
S8
= +10V
+9V
+5V
IH6108
12-131
IH6108 Application Information
ENABLE Input Strobing Levels
The ENABLE input on the IH6108 requires a minimum of
+4.5V to trigger to the "1" state and a maximum of +0.8V to
trigger to the "0" state. If the ENABLE input is being driven
from TTL logic, a pull-up resistor of 1k to 3k
is required
from the gate output to +5V supply. (See Figure 4.)
When the EN input is driven from CMOS logic, no pullup is
necessary, see Figure 5.
The supply voltage of the CD4009 affects the switching
speed of the IH6108; the same is true for TTL supply voltage
levels. The following chart shows the effect, on t
trans
for a
supply varying from +4.5V to +5.5V.
The throughput rate can therefore be maximized by using a
+5V to +5.5V supply for the ENABLE Strobe Logic.
The examples shown in Figures 4 and 5 deal with ENABLE
strobing when expansion to more than eight channels is
required. In these cases the EN terminal acts as a fourth
address input. If eight channels or less are being multi-
plexed, the EN terminal can be directly connected to +5V
logic supply to enable the IH6108 at all times.
Using the IH6108 with Supplies Other Than
15V
The IH6108 can be used with power supplies ranging from
6V to
16V. The switch r
DS(ON)
will increase as the supply
voltages decrease, however, the multiplexer error term (the
product of leakage times r
DS(ON)
) will remain approximately
constant since leakage decreases as the supply voltages
are reduced.
Caution must be taken to ensure that the enable (EN)
voltage is at least 0.7V below V+ at all times. If this is not
done, the Address input strobing levels will not function
properly. This may be achieved quite simply by connecting
EN (pin 2) to V+ (pin 13) via a silicon diode as shown in
Figure 6. When using this type of configuration, a further
requirement must be met: the strobe levels of A0 and A1
must be within 2.5V of the EN voltage in order to define a
binary "1" state. For the case shown in Figure 6 the EN volt-
age is 11.3V which means that logic high at A0 and A1 is
+8.8V (logic low continues to be 0.8V). In this configuration
the IH6108 cannot be driven by TTL (+5V) or CMOS (+5V)
logic. It can be driven by TTL open collector logic or CMOS
logic with +12V supplies.
If the logic and the IH6108 have common supplies, the EN
pin should again be connected to the supply through a
silicon diode. In this case, tying EN to the logic supply
directly will not work since it violates the 0.7V differential
voltage required between V+ and EN, (See Figure 7). A 1
F
capacitor can be placed across the diode to minimize
switching glitches.
FIGURE 2. t
OPEN
(BREAK-BEFORE-MAKE) SWITCHING TEST CIRCUIT AND WAVEFORMS
FIGURE 3. t
ON
AND t
OFF
SWITCHING TEST CIRCUIT AND WAVEFORMS
Switching Information
(Continued)
-2V
S
2
THRU
S
7
S
8
A
2
A
1
A
0
+15V
-15V
D
V
OUT
IH6108
EN
35pF
V-
GND
V
A
200
+5V
S
1
3V
0.8V
t
OPEN
V
A
t
r
< 100ns
t
f
< 100ns
0.8V
S1 ON
S8 ON
50%
50%
t
OPEN
V
S1
= -2V
V
OUT
V
S1
S
2
THRU
S
8
A
2
A
1
A
0
+15V
-15V
V
OUT
IH6108
EN
35pF
GND
V
EN
1k
S
1
OUT
5V
0.8V
V
EN
t
r
< 100ns
t
f
< 100ns
0V
50%
t
EN(OFF)
V
S1
= -2V
V
OUT
90%
t
EN(ON)
10%
CMOS OR TTL
SUPPLY VOLTAGE
TYPICAL T
TRANS
AT 25
o
C
+4.5V
400ns
+4.75V
300ns
+5.00V
250ns
+5.25V
200ns
+5.50V
175ns
IH6108
12-132
Switching Information
FIGURE 4. ENABLE INPUT STROBING FROM TTL LOGIC
FIGURE 5. ENABLE INPUT DRIVEN FROM CMOS LOGIC
FIGURE 6. IH6108 CONNECTION DIAGRAM FOR LESS THAN
15V SUPPLY OPERATION
+5V
14
15
16
9
13
12
11
10
1
2
3
4
5
7
6
8
A
0
EN
-15V
S
2
S
3
S
4
A
1
S
5
S
6
S
7
A
2
S
8
+15V
S
1
D
1k
1
2
3
4
5
6
7
14
13
12
11
10
9
8
DM7404N
TTL LOGIC
V
OUT
IH6108
0V
+3V
14
15
16
9
13
12
11
10
1
2
3
4
5
7
6
8
A
0
EN
-15V
S
2
S
3
S
4
A
1
S
5
S
6
S
7
A
2
S
8
+15V
S
1
D
IH6108
14
15
16
9
13
12
11
10
1
2
3
4
5
7
6
8
+5V
CD4009
GND
14
15
16
9
13
12
11
10
1
2
3
4
5
7
6
8
A
0
EN
-12V
S
2
S
3
S
4
A
1
S
5
S
6
S
7
A
2
S
8
+12V
S
1
(V
OUT
) D
IH6108
INPUTS
INPUTS
1N914
IH6108