eroflex Circuit T
echnology
Multiplexer Modules For The Future SCD8503 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 three (3) HS-1840RH Multiplexers
One Address Bus (A
0 -
A
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 ACT8503 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 ACT8503 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 ACT8503 is ideal for demanding military and space applications.
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ISO
9001
CIRCUIT TECHNOLOGY
www.aeroflex.com
ACT8503
48-Channel Analog Multiplexer Module
Radiation Hardened & ESD Protected
2
Aeroflex Circuit Technology
SCD8503 REV A 10/26/01 Plainview NY (516) 694-6700
CH 0
CH 1
5
EN
0-
15
A0
A1
A2
A3
OUT
P
UT
0
-
1
5
MU
X
1
16
VR
+V
CC
-V
EE
V
RE
F
GND
16
A
C
T85
03 48
C
h
an
nel
A
n
alo
g
M
U
X
B
l
o
c
k D
i
a
g
r
a
m
CH 1
6
CH 3
1
EN
16
-
3
1
OUT
P
UT
1
6
-
3
1
MU
X
2
16
VR
16
CH 3
2
CH 4
7
EN
32
-
4
7
OUT
P
UT
3
2
-
4
7
MU
X
3
16
VR
16
3
Aeroflex Circuit Technology
SCD8503 REV A 10/26/01 Plainview NY (516) 694-6700
Organization and Application
The ACT8503 consists of three 16 channel muxes arranged as shown in the Block Diagram.
The Address Bus and three Enable lines providing for 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 one output.
The ACT8503 design is inherently Radiation Hard due to the HS1840RH Multiplexers as well
as Microsemi Corp. Transient Suppressors (Reference Microsemi MicroNotes Series 050 -
page 14).
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
SCD8503 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
DD
(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
1.5
mA
I-
V
EN
(0-47)
= V
A
(0-3)
= 0
-1.5
0
mA
+I
SBY
V
EN
(0-47)
= 4V, V
A
(0-3)
= 0 6/
0
1.5
mA
-I
SBY
V
EN
(0-47)
= 4V, V
A
(0-3)
= 0 6/
-1.5
0
mA
Address Input Current
I
AL
(0-3)
V
A
= 0V 1/
-3
3
A
I
AH
(0-3)
V
A
= 5V 1/
-3
3
A
Enable Input Current
I
ENL
(0-47)
V
EN
(0-47)
= 0V
-1.5
1.5
A
I
ENH
(0-47)
V
EN
(0-47)
= 5V
-1.5
1.5
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
5
Aeroflex Circuit Technology
SCD8503 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
Output Leakage Current
OUTPUTS
(pins 25, 70 & 68)
+I
DOFFOUTPUT
(
ALL
)
V
OUT
= +10V, V
EN
= 4V, output and all
unused MUX inputs under test = -10V
3/, 4/
-100 +100
nA
Output Leakage Current
OUTPUTS
(pins 25, 70 & 68)
-I
DOFFOUTPUT
(
ALL
)
V
OUT
= -10V, V
EN
= 4V, output and all
unused MUX inputs under test = +10V
3/, 4/
-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
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) and OUTPUT(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
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