eroflex Circuit T
echnology
Multiplexer Modules For The Future SCD8502 REV A 10/26/01
Features
Radiation Environment
Radiation 300K(Si) Total Dose
No Latch-Up
or SEE to 120MeV/cm
2
/mg
Full Military Temperature Range
Low Power Consumption < 90mW
48 Channels Provided by Six (6) HS-1840RH Multiplexers
One Address Bus (A
0-3
) and Three Enable Lines
All Channel Inputs protected by 20V Transorbs
Fast Access Time 1500ns
35V Input Over Voltage Protection (Power On or Off)
Break-Before-Make Switching
High Analog Input Impedance (Power On or Off)
Dielectrically Isolated Device Islands
No Latch-Up
Packaging Hermetic Ceramic Quad Flat Pack
96 Leads, 1.32"Sq x .20"Ht Quad Flat Pack
Typical Weight 15 grams
DESC SMD Pending
General Description
Aeroflex's ACT8502 is a radiation hardened, multi-chip 48 channel multiplexer MCM (multi-chip
module) with ESD protection for use in space applications. All channel inputs have electrostatic
discharge protection.
The ACT8502 has been specifically designed to meet exposure to radiation environments. The
multiplexer is available in a 96 lead High Temperature Co-Fired Ceramic (HTCC) Quad Flatpack
(QFP) and is guaranteed operational from -55C to +125C. Available screened in accordance with
MIL-PRF-38534, the ACT8502 is ideal for demanding military and space applications.
F
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ISO
9001
CIRCUIT TECHNOLOGY
www.aeroflex.com
ACT8502
48-Channel Analog Multiplexer Module
Radiation Hardened & ESD Protected
2
Aeroflex Circuit Technology
SCD8502 REV A 10/26/01 Plainview NY (516) 694-6700
A
C
T
8502 4
8
C
h
a
n
n
e
l A
n
a
l
og
MU
X
B
l
oc
k
D
i
a
g
r
a
m
CH 0
CH
1
5
EN
0-
1
5
CH 1
6
CH 3
1
EN
16
-
3
1
CURRE
NT
1
6
-3
1
A0
A1
A2
A3
OUT
P
UT
3
2
-
4
7
CURRE
NT
3
2
-4
7
OUT
P
UT
1
6
-
3
1
CURRE
NT
0
-
1
5
CH 3
2
CH 4
7
EN
32
-
4
7
MU
X
3
MU
X
5
MU
X
6
MU
X
4
16
16
16
16
16
16
16
VR
VR
VR
+V
CC
-V
EE
V
RE
F
GND
16
16
OUT
P
UT
0
-
1
5
MU
X
2
MU
X
1
3
Aeroflex Circuit Technology
SCD8502 REV A 10/26/01 Plainview NY (516) 694-6700
Organization and Application
The ACT8502 consists of six 16 channel muxes arranged as shown in the Block Diagram. The
ACT8502 design is inherently Radiation Hard due to the HS1840RH Multiplexers as well as
Microsemi Corp. Transient Suppressors (Reference Microsemi MicroNotes Series 050 -
page 14).
48 channels addressable by Bus A
0
~A
3
,
in Three 16 channel blocks, each block enabled
separately. Each block connects the addressed channel to two outputs, "Output" and "Current".
This technique enables selecting and reading a remote resistive sensor without the MUX
resistance being part of the measurement. For grounded sensors, this is done by passing
current to the sensor by means of the "Current" pin and reading the resultant voltage
(proportional to the sensor resistance) at the "Output" pin.
NOTE: It is recommended that all "NC or "no connect pin", be grounded. This eliminates or
minimizes any ESD or static buildup.
4
Aeroflex Circuit Technology
SCD8502 REV A 10/26/01 Plainview NY (516) 694-6700
Absolute Maximum Ratings
1/
Parameter
Range
Units
Case Operating Temperature Range
-55 to +125
C
Storage Temperature Range
-55 to +150
C
Supply Voltage
+V
CC
(Pin 44)
-V
EE
(Pin 46)
V
REF
(Pin 48)
+20
-20
+20
V
V
V
Digital Input Overvoltage
V
EN
(Pins 5, 91, 92), V
A
(Pins 1, 3, 95, 93)
< V
R
+4
> GND -4
V
V
Analog Input Over Voltage
V
S
18
V
Notes:
1/ All measurements are made with respect to ground.
NOTICE: Stresses above those listed under "Absolute Maximums Rating" may cause permanent damage to the device. These are stress
rating only; functional operation beyond the "Operation Conditions" is not recommended and extended exposure beyond the "Operation
Conditions" may effect device reliability.
Recommended Operating Conditions
Symbol
Parameter
Typical
Units
+V
CC
+15V Power Supply Voltage
+15.0
V
-V
EE
-15V Power Supply Voltage
-15.0
V
V
REF
Reference Voltage
+5.00
V
V
AL
Logic Low Level
+0.8
V
V
AH
Logic High Level
+4.0
V
DC Electrical Performance Characteristics
1/
(Tc = -55C to +125C, +V
CC
= +15V, -V
EE
= -15V, V
REF
= +5.0V, Unless otherwise specified)
Parameter
Symbol
Conditions
Min
Max
Units
Supply Current
I+
V
EN
(0-47)
= V
A
(0-3)
= 0
0.3
3
mA
I-
V
EN
(0-47)
= V
A
(0-3)
= 0
-3
-0.3
mA
+I
SBY
V
EN
(0-47)
= 4V, V
A
(0-3)
= 0 6/
0.3
3
mA
-I
SBY
V
EN
(0-47)
= 4V, V
A
(0-3)
= 0 6/
-3
-0.3
mA
Address Input Current
I
AL
(0-3)
V
A
= 0V 1/
-6
6
A
I
AH
(0-3)
V
A
= 5V 1/
-6
6
A
Enable Input Current
I
ENL
(0-15)
V
EN
(0-15)
= 0V
-2
2
A
I
ENH
(0-15)
V
EN
(0-15)
= 5V
-2
2
A
I
ENL
(16-31)
V
EN
(16-31)
= 0V
-2
2
A
I
ENH
(16-31)
V
EN
(16-31)
= 5V
-2
2
A
I
ENL
(32-47)
V
EN
(32-47)
= 0V
-2
2
A
I
ENH
(32-47)
V
EN
(32-47)
= 5V
-2
2
A
Positive Input
Leakage Current
CH0-CH47
+I
SOFFOUTPUT
(
ALL
)
V
IN
= +10V, V
EN
= 4V, output and all unused
MUX inputs under test = -10V 2/, 3/
-100 +700
nA
+I
SOFFCURRENT
(
ALL
)
-100 +700
nA
5
Aeroflex Circuit Technology
SCD8502 REV A 10/26/01 Plainview NY (516) 694-6700
Negative Input
Leakage Current
CH0-CH47
-I
SOFFOUTPUT
(
ALL
)
V
IN
= -10V, V
EN
= 4V, output and all unused
MUX inputs under test = +10V 2/, 3/
-100 +700
nA
-I
SOFFCURRENT
(
ALL
)
-100 +700
nA
Output Leakage
Current OUTPUTS
(pins 25, 70 & 68)
CURRENTS
(pins 67 & 69)
+I
DOFFOUTPUT
(
ALL
)
V
OUT
= +10V, V
EN
= 4V, output and all
unused MUX inputs under test = -10V 3/, 4/
-100 +100
nA
+I
DOFFCURRENT
(
ALL
)
-100 +100
nA
Output Leakage
Current OUTPUTS
(pins 25, 70 & 68)
CURRENTS
(pins 67 & 69)
-I
DOFFOUTPUT
(
ALL
)
V
OUT
= -10V, V
EN
= 4V, output and all
unused MUX inputs under test = +10V 3/,
4/
-100 +100
nA
-I
DOFFCURRENT
(
ALL
)
-100 +100
nA
Input Clamped
Voltage CH0 - CH47
+V
CLMP
(0-47)
V
EN
= 4V, all unused MUX inputs under test
are open. 3/
+25C
+125C
-55C
18.0
18.0
17.5
23.0
23.5
22.5
V
V
V
Input Clamped
Voltage CH0 - CH47
-V
CLMP
(0-47)
+25C
+125C
-55C
-23.0
-23.5
-22.5
-18.0
-18.0
-17.5
V
V
V
Switch ON Resistance
OUTPUTS
(pins 25, 70 & 68)
R
DS
(
ON
)
(0-47)
A
V
IN
= +15V, V
EN
= 0.8V, I
OUT
= -1mA
2/, 3/, 5/
500 3000
R
DS
(
ON
)
(0-47)
B
V
IN
= +5V, V
EN
= 0.8V, I
OUT
= -1mA
2/, 3/, 5/
500 3000
R
DS
(
ON
)
(0-47)
C
V
IN
= -5V, V
EN
= 0.8V, I
OUT
= +1mA
2/, 3/, 5/
500 3000
Switch ON Resistance
CURRENTS
(pins 26, 67 & 69)
R
DS
(
ON
)
(0-47)
A
V
IN
= +15V, V
EN
= 0.8V, I
OUT
= -1mA
2/, 3/, 5/
500 3000
R
DS
(
ON
)
(0-47)
B
V
IN
= +5V, V
EN
= 0.8V, I
OUT
= -1mA
2/, 3/, 5/
500 3000
R
DS
(
ON
)
(0-47)
C
V
IN
= -5V, V
EN
= 0.8V, I
OUT
= +1mA
2/, 3/, 5/
500 3000
Notes:
1/ Measure inputs sequentially. Ground all unused inputs of the MUX under test. VA is the applied input voltage to the MUXes' address lines A(0-3).
2/ V
IN
is the applied input voltage to the MUXes' input channel CH0-CH47.
3/ V
EN
is the applied input voltage to the MUXes' enable line En(0-15), En(16-31) and En(32-47).
4/ V
OUT
is the applied input voltage to the MUXes' output line OUTPUT(0-15), OUTPUT(16-31), OUTPUT(32-47), CURRENT(0-15) ,
CURRENT(16-31) and CURRENT(32-47).
5/ Negative current is the current flowing out of each of the MUX pins. Positive current is the current flowing into each MUX pin.
6/ If not tested, shall be guaranteed to the specified limits.
Switching Characteristics
(Tc = -55C to +125C, V
DD
= +15V, V
EE
= -15V, V
R
= +5.0V, Unless otherwise specified)
Parameter
Symbol
Conditions
Min
Max
Units
Switching Test MUX
t
ON
A
R
L
= 10K
, C
L
= 50pF
10
1500
ns
t
OFF
A
R
L
= 10K
, C
L
= 50pF
10
2000
ns
t
ON
EN
R
L
= 1K
, C
L
= 50pF
10
1500
ns
t
OFF
EN
R
L
= 1K
, C
L
= 50pF
10
1000
ns
DC Electrical Performance Characteristics
1/
(con't)
(Tc = -55C to +125C, +V
CC
= +15V, -V
EE
= -15V, V
REF
= +5.0V, Unless otherwise specified)
Parameter
Symbol
Conditions
Min
Max
Units
6
Aeroflex Circuit Technology
SCD8502 REV A 10/26/01 Plainview NY (516) 694-6700
Truth Table (CH0 CH15)
A3
A2
A1
A0
EN(0-15)
"ON" CHANNEL
1/
X
X
X
X
H
NONE
L
L
L
L
L
CH0
L
L
L
H
L
CH1
L
L
H
L
L
CH2
L
L
H
H
L
CH3
L
H
L
L
L
CH4
L
H
L
H
L
CH5
L
H
H
L
L
CH6
L
H
H
H
L
CH7
H
L
L
L
L
CH8
H
L
L
H
L
CH9
H
L
H
L
L
CH10
H
L
H
H
L
CH11
H
H
L
L
L
CH12
H
H
L
H
L
CH13
H
H
H
L
L
CH14
H
H
H
H
L
CH15
1/ Between CH0-15 and OUTPUT (0-15) and CURRENT (0-15).
Truth Table (CH16 CH31)
A3
A2
A1
A0
EN(16-31)
"ON" CHANNEL
1/
X
X
X
X
H
NONE
L
L
L
L
L
CH16
L
L
L
H
L
CH17
L
L
H
L
L
CH18
L
L
H
H
L
CH19
L
H
L
L
L
CH20
L
H
L
H
L
CH21
L
H
H
L
L
CH22
L
H
H
H
L
CH23
H
L
L
L
L
CH24
H
L
L
H
L
CH25
H
L
H
L
L
CH26
H
L
H
H
L
CH27
H
H
L
L
L
CH28
H
H
L
H
L
CH29
H
H
H
L
L
CH30
H
H
H
H
L
CH31
1/ Between CH16-31 and OUTPUT (16-31) and CURRENT (16-31).
7
Aeroflex Circuit Technology
SCD8502 REV A 10/26/01 Plainview NY (516) 694-6700
Truth Table (CH32 CH47)
A3
A2
A1
A0
EN(32-47)
"ON" CHANNEL
1/
X
X
X
X
H
NONE
L
L
L
L
L
CH32
L
L
L
H
L
CH33
L
L
H
L
L
CH34
L
L
H
H
L
CH35
L
H
L
L
L
CH36
L
H
L
H
L
CH37
L
H
H
L
L
CH38
L
H
H
H
L
CH39
H
L
L
L
L
CH40
H
L
L
H
L
CH41
H
L
H
L
L
CH42
H
L
H
H
L
CH43
H
H
L
L
L
CH44
H
H
L
H
L
CH45
H
H
H
L
L
CH46
H
H
H
H
L
CH47
1/ Between CH32-47 and OUTPUT (32-47) and CURRENT (32-47) and CURRENT (32-47).
8
Aeroflex Circuit Technology
SCD8502 REV A 10/26/01 Plainview NY (516) 694-6700
0.8V
Enable Line
4V
OUTPUT
t
ON
EN
t
OFF
EN
Definition of
t
OFF
A
t
OFF
A
0V
OUTPUT
0.8V
4V
t
ON
A
Definition of
t
ON
A
0V
12V MIN
OUTPUT
0.8V
4V
Address Lines
Definition of t
ON
EN
and t
OFF
EN
0V
Address Lines
50%
90%
10%
9
Aeroflex Circuit Technology
SCD8502 REV A 10/26/01 Plainview NY (516) 694-6700
Lead Numbers & Functions
ACT8502 96 Leads Ceramic QUAD Flat Pack
Pin #
Function
Pin #
Function
Pin #
Function
1
A
2
33
CH11
65
CH33
2
NC
34
NC
66
CH32
3
A
3
35
CH12
67
Output I(32-47)
4
NC
36
NC
68
Output V(32-47)
5
EN 0-15
37
CH13
69
Output I(16-31)
6
NC
38
NC
70
Output V(16-31)
7
CH0
39
CH14
71
GND
8
NC
40
NC
72
GND
9
CH1
41
CH15
73
CH31
10
NC
42
NC
74
CH30
11
CH2
43
NC
75
CH29
12
NC
44
+V
CC
76
CH28
13
CH3
45
NC
77
CH27
14
NC
46
-V
EE
78
CH26
15
CH4
47
NC
79
CH25
16
NC
48
V
REF
80
CH24
17
CH5
49
NC
81
CH23
18
NC
50
CASE GND
82
CH22
19
CH6
51
CH47
83
CH21
20
NC
52
CH46
84
CH20
21
CH7
53
CH45
85
CH19
22
NC
54
CH44
86
CH18
23
GND 55
CH43
87
CH17
24
GND
56
CH42
88
CH16
25
Output V(0-15)
57
CH41
89
GND
26
Output I(0-15)
58
CH40
90
GND
27
CH8
59
CH39
91
EN 32-47
28
NC
60
CH38
92
EN 16-31
29
CH9
61
CH37
93
A
0
30
NC
62
CH36
94
NC
31
CH10
63
CH35
95
A
1
32
NC
64
CH34
96
NC
NOTE: It is recommended that all "NC or "no connect pin", be grounded. This eliminates or minimizes any ESD or static buildup.
10
Aeroflex Circuit Technology
SCD8502 REV A 10/26/01 Plainview NY (516) 694-6700
C I R C U I T T E C H N O L O G Y
Ordering Information
Model Number
Screening
DESC SMD #
Package
ACT8502 -S
Military Temperature, -55C to +125C,
Screened to the individual test methods of MIL-STD-883 IAW
MIL-PRF-38534 Class K
Pending
QUAD Flat
Pack
ACT8502
Military Temperature, -55C to +125C,
Screened to the individual test methods of MIL-STD-883 IAW
MIL-PRF-38534 Class H
ACT8502 -7
Commercial Flow, +25C testing only
NA
ACT8502 -T
Commercial Flow, -55C to +125C testing only
ACT8502 -I
Commercial Flow, -40C to +85C testing only
ACT8502 -C
Commercial Flow, -0C to +70C testing only
Specifications subject to change without notice
1.320 SQ
Pin 85
Pin 12
Pin 60
Pin 37
Pin 13
Pin 36
Pin 61
Pin 84
Pin 1
Flat Package Outline
MAX
(23 Spaces at .050)
Tol Non-Cum
4 Sides
.0165
.003
1.150 .005
.200
MAX
(.400)
Note: Outside ceramic tie
bars not shown for clarity.
Contact factory for details
.006
.001
Aeroflex Circuit Technology
35 South Service Road
Plainview New York 11803
Telephone: (516) 694-6700
FAX: (516) 694-6715
Toll Free Inquiries: (800) THE-1553
www.aeroflex.com
E-Mail: sales-act@aeroflex.com
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