Standard Products
ACT8502 48-Channel Analog Multiplexer Module
Radiation Hardened & ESD Protected
www.aeroflex.com/RADHARD
June 29, 2004
FEATURES
❑
Radiation Performance
- 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 (A0-3) 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
DSCC SMD 5962-0323401KXC
*
NOTE: Aeroflex Plainview does not currently have a DSCC certified Radiation Hardened Assurance Program
* Not approved for RAD Hard Version of SMD at this time
Radiation information available upon request
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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 -55°C to +125°C. Available screened in
accordance with MIL-PRF-38534, the ACT8502 is ideal for demanding military and space applications.
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.
SCD8502 Rev D
CH 0
MUX 1
OUTPUT 0-15
MUX 2
16
16
16
SCD8502 Rev D
CH 15
•
•
•
VR
CURRENT 0-15
EN 0-15
CH 16
16
16
CH 32
MUX 3
OUTPUT 16-31
EN 32-47
CH 47
16
16
CH 31
•
•
•
VR
VR
•
•
•
MUX 4
OUTPUT 32-47
EN 16-31
2
16
+V
CC
-V
EE
16
MUX 5
V
REF
CURRENT 16-31
MUX 6
CURRENT 32-47
GND
A0
A1
A2
A3
ACT8502 48 – CHANNEL ANALOG MUX BLOCK DIAGRAM
ABSOLUTE MAXIMUM RATINGS
1/
Parameter
Case Operating Temperature Range
Storage Temperature Range
Supply Voltage
+V
CC
(Pin 44)
-V
EE
(Pin 46)
V
REF
(Pin 48)
Digital Input Overvoltage
V
EN
(Pins 5, 91, 92), V
A
(Pins 1, 3, 95, 93)
Analog Input Over Voltage
V
S
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.
Range
-55 to +125
-55 to +150
+20
-20
+20
< V
R
+4
> GND -4
±18
Units
°C
°C
V
V
V
V
V
V
RECOMMENDED OPERATING CONDITIONS
Symbol
+V
CC
-V
EE
V
REF
V
AL
V
AH
+15V Power Supply Voltage
-15V Power Supply Voltage
Reference Voltage
Logic Low Level
Logic High Level
Parameter
Typical
+15.0
-15.0
+5.00
+0.8
+4.0
Units
V
V
V
V
V
DC ELECTRICAL PERFORMANCE CHARACTERISTICS
1/
(Tc = -55°C to +125°C, +V
CC
= +15V, -V
EE
= -15V, V
REF
= +5.0V, Unless otherwise specified)
Parameter
Supply Current
Symbol
I+
I-
+I
SBY
-I
SBY
Conditions
V
EN
(0-47)
= V
A
(0-3)
= 0
V
EN
(0-47)
= V
A
(0-3)
= 0
V
EN
(0-47)
= 4V, V
A
(0-3)
= 0 6/
V
EN
(0-47)
= 4V, V
A
(0-3)
= 0 6/
V
A
= 0V 1/
V
A
= 5V 1/
V
EN
(0-15)
= 0V
V
EN
(0-15)
= 5V
V
EN
(16-31)
= 0V
V
EN
(16-31)
= 5V
V
EN
(32-47)
= 0V
V
EN
(32-47)
= 5V
V
IN
= +10V, V
EN
= 4V, output and all unused
MUX inputs under test = -10V 2/, 3/
Min
0.3
-3
0.3
-3
-6
-6
-2
-2
-2
-2
-2
-2
Max
3
-0.3
3
-0.3
6
6
2
2
2
2
2
2
Units
mA
mA
mA
mA
µA
µA
µA
µA
µA
µA
µA
µA
nA
nA
Address Input Current
I
AL
(0-3)
I
AH
(0-3)
Enable Input Current
I
ENL
(0-15)
I
ENH
(0-15)
I
ENL
(16-31)
I
ENH
(16-31)
I
ENL
(32-47)
I
ENH
(32-47)
+I
SOFFOUTPUT
(
ALL
)
+I
SOFFCUR
-
RENT
(
ALL
)
Positive Input
Leakage Current
CH0-CH47
SCD8502 Rev D
-100 +700
-100 +700
3
DC ELECTRICAL PERFORMANCE CHARACTERISTICS
1/
(con’t)
(Tc = -55°C to +125°C, +V
CC
= +15V, -V
EE
= -15V, V
REF
= +5.0V, Unless otherwise specified)
Parameter
Negative Input Leakage
Current CH0-CH47
Output Leakage Current
OUTPUTS
(pins 25, 70 & 68)
CURRENTS
(pins 67 & 69)
Output Leakage Current
OUTPUTS
(pins 25, 70 & 68)
CURRENTS
(pins 67 & 69)
Input Clamped Voltage
CH0 - CH47
Input Clamped Voltage
CH0 - CH47
Symbol
-I
SOFFOUTPUT
(
ALL
)
Conditions
Min
Max
Units
nA
nA
nA
nA
nA
nA
V
V
V
V
V
V
V
IN
= -10V, V
EN
= 4V, output and all unused
MUX inputs under test = +10V 2/, 3/
-I
SOFFCURRENT
(
ALL
)
+I
DOFFOUTPUT
(
ALL
)
+I
DOFFCUR
-
RENT
(
ALL
)
-100 +700
-100 +700
-100 +100
V
OUT
= +10V, V
EN
= 4V, output and all unused
MUX inputs under test = -10V 3/, 4/
-100 +100
-100 +100
-I
DOFFOUTPUT
(
ALL
)
-I
DOFFCUR
-
RENT
(
ALL
)
V
OUT
= -10V, V
EN
= 4V, output and all unused
MUX inputs under test = +10V 3/, 4/
-100 +100
+V
CLMP
(0-47)
+25°C 18.0 23.0
V
EN
= 4V, all unused MUX inputs under test are
+125°C 18.0 23.5
open. 3/
-55°C 17.5 22.5
+25°C -23.0 -18.0
+125°C -23.5 -18.0
-55°C -22.5 -17.5
V
IN
= +15V, V
EN
= 0.8V, I
OUT
= -1mA
2/, 3/, 5/
V
IN
= +5V, V
EN
= 0.8V, I
OUT
= -1mA
2/, 3/, 5/
V
IN
= -5V, V
EN
= 0.8V, I
OUT
= +1mA
2/, 3/, 5/
V
IN
= +15V, V
EN
= 0.8V, I
OUT
= -1mA
2/, 3/, 5/
V
IN
= +5V, V
EN
= 0.8V, I
OUT
= -1mA
2/, 3/, 5/
V
IN
= -5V, V
EN
= 0.8V, I
OUT
= +1mA
2/, 3/, 5/
500 3000
500 3000
500 3000
500 3000
500 3000
500 3000
-V
CLMP
(0-47)
R
DS
(
ON
)
(0-47)
A
Ω
Ω
Ω
Ω
Ω
Ω
Switch ON Resistance
OUTPUTS
(pins 25, 70 & 68)
R
DS
(
ON
)
(0-47)
B
R
DS
(
ON
)
(0-47)
C
Switch ON Resistance
CURRENTS
(pins 26, 67 & 69)
R
DS
(
ON
)
(0-47)
A
R
DS
(
ON
)
(0-47)
B
R
DS
(
ON
)
(0-47)
C
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 = -55°C to +125°C, V
DD
= +15V, V
EE
= -15V, V
R
= +5.0V, Unless otherwise specified)
Parameter
Switching Test MUX
Symbol
t
ON
A
t
OFF
A
t
ON
EN
t
OFF
EN
Conditions
R
L
= 10K
Ω,
C
L
= 50pF
R
L
= 10K
Ω,
C
L
= 50pF
Tc = +25°C, +125°C
Tc = -55°C
R
L
= 1K
Ω,
C
L
= 50pF
R
L
= 1K
Ω,
C
L
= 50pF
Min
10
10
10
10
10
Max
1500
2000
5000
1500
1000
Units
ns
ns
ns
ns
ns
SCD8502 Rev D
4
TRUTH TABLE (CH0 – CH15)
A3
X
L
L
L
L
L
L
L
L
H
H
H
H
H
H
H
H
A2
X
L
L
L
L
H
H
H
H
L
L
L
L
H
H
H
H
A1
X
L
L
H
H
L
L
H
H
L
L
H
H
L
L
H
H
A0
X
L
H
L
H
L
H
L
H
L
H
L
H
L
H
L
H
EN(0-15)
H
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
"ON" CHANNEL
1/
NONE
CH0
CH1
CH2
CH3
CH4
CH5
CH6
CH7
CH8
CH9
CH10
CH11
CH12
CH13
CH14
CH15
1/ Between CH0-15 and OUTPUT (0-15) and CURRENT (0-15).
TRUTH TABLE (CH16 – CH31)
A3
X
L
L
L
L
L
L
L
L
H
H
H
H
H
H
H
H
A2
X
L
L
L
L
H
H
H
H
L
L
L
L
H
H
H
H
A1
X
L
L
H
H
L
L
H
H
L
L
H
H
L
L
H
H
A0
X
L
H
L
H
L
H
L
H
L
H
L
H
L
H
L
H
EN(16-31)
H
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
"ON" CHANNEL
1/
NONE
CH16
CH17
CH18
CH19
CH20
CH21
CH22
CH23
CH24
CH25
CH26
CH27
CH28
CH29
CH30
CH31
1/ Between CH16-31 and OUTPUT (16-31) and CURRENT (16-31).
SCD8502 Rev D
5
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