Standard Products
Datasheet
ACT8502 48-Channel Analog Multiplexer Module
Radiation Tolerant & ESD Protected
www.aeroflex.com/mux
May 5, 2014
FEATURES
48 channels provided by six 16-channel multiplexers
Radiation performance
- Total dose:
300 krads(Si), Dose rate = 50 - 300 rads(Si)/s
- SEU:
Immune up to 120 MeV-cm
2
/mg
- SEL:
Immune by process design
Full military temperature range
Low power consumption < 90mW
One address bus (A0-3) and three enable lines afford flexible organization
All channel inputs protected by ±20V nominal Transorbs
Fast access time 1500ns typical
Break-Before-Make switching
High analog input impedance (power on or off)
Designed for aerospace and high reliability space applications
Packaging – Hermetic ceramic
- 96 leads, 1.32"Sq x 0.20"Ht quad flat pack
- Typical Weight 15 grams
Aeroflex Plainview’s Radiation Hardness Assurance Plan is DLA Certified to MIL-PRF-38534, Appendix G.
Aeroflex’s ACT8502 is a radiation tolerant, 48 channel multiplexer MCM (multi-chip module) with
electrostatic discharge (ESD) protection on all channel inputs.
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 (CQFP). It 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.
GENERAL DESCRIPTION
ORGANIZATION AND APPLICATION
The ACT8502 consists of six 16 channel multiplexers arranged as shown in the Block Diagram. The
ACT8502 design is inherently radiation tolerant.
The ACT8502 consists of forty-eight (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 H
CH 0
MUX 1
OUTPUT 0-15
MUX 2
16
16
16
CH 15
•
•
•
VR
CURRENT 0-15
SCD8502 Rev H 5/5/14
16
EN 0-15
CH 16
16
16
CH 32
MUX 3
OUTPUT 16-31
EN 32-47
CH 47
16
CH 31
•
•
•
VR
VR
•
•
•
MUX 4
OUTPUT 32-47
EN 16-31
2
16
+V
EE
-V
EE
16
MUX 5
V
REF
CURRENT 16-31
MUX 6
CURRENT 32-47
GND
Aeroflex Plainview
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
EE
(Pin 44)
-V
EE
(Pin 46)
V
REF
(Pin 48)
Digital Input Overvoltage
V
EN
(Pins 5, 91, 92), V
A
(Pins 1, 3, 93, 95)
Analog Input Over Voltage
V
S
Notes:
1/ All measurements are made with respect to ground.
NOTICE: Stresses above those listed under "Absolute Maximum Ratings" 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 affect device reliability.
Range
-55 to +125
-55 to +150
+16.5
-16.5
+16.5
<V
R
+4
>GND -4
±18
Units
°C
°C
V
V
V
V
V
V
RECOMMENDED OPERATING CONDITIONS
1/
Symbol
+V
EE
-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
Notes:
1/ Power Supply turn-on sequence shall be as follows: +V
EE
, -V
EE
, followed by V
REF
.
(Tc = -55°C to +125°C, +V
EE
= -15V, -V
EE
= -15V, V
REF
= +5.0V - Unless otherwise specified)
DC ELECTRICAL PERFORMANCE CHARACTERISTICS
1/
Symbol
+I
EE
-I
EE
+I
SBY
-I
SBY
V
EN
(0-47) = 4V, V
A
(0-3) = 0 6/
V
A
= 0V 1/, 7/
V
A
= 5V 1/, 7/
V
EN
(0-15) = 0V 7/
V
EN
(0-15) = 5V 7/
V
EN
(16-31) = 0V 7/
V
EN
(16-31) = 5V 7/
V
EN
(32-47) = 0V 7/
V
EN
(32-47) = 5V 7/
Parameter
Supply Current
Conditions
V
EN
(0-47) = V
A
(0-3) = 0
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
A
A
A
A
A
A
A
A
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)
SCD8502 Rev H 5/5/14
3
Aeroflex Plainview
DC ELECTRICAL PERFORMANCE CHARACTERISTICS
1/
(continued)
(Tc = -55°C to +125°C, +V
EE
= -15V, -V
EE
= -15V, V
REF
= +5.0V - Unless otherwise specified)
Parameter
Positive Input
Leakage Current
CH0-CH47
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
Switch ON Resistance
OUTPUTS
(pins 25, 70 & 68)
Symbol
I
SOFFOUTPUT
+I
SOFFCURRENT
-I
SOFFOUTPUT
-I
SOFFCURRENT
+I
DOFFOUTPUT
+I
DOFFCURRENT
Conditions
VIN = +10V, VEN = 4V, output and all unused MUX inputs
under test = -10V 2/, 3/, 7/
V
IN
= -10V, V
EN
= 4V, output and all unused MUX inputs
under test = +10V 2/, 3/, 7/
V
OUT
= +10V, V
EN
= 4V, output and all unused MUX
inputs under test = -10V 3/, 4/, 7/
Min
-100
-100
-100
-100
-100
-100
Max
+700
+700
+700
+700
+100
+100
+100
+100
23.0
23.5
22.5
-18.0
-18.0
-17.5
3000
3000
3000
3000
3000
3000
Units
nA
nA
nA
nA
nA
nA
nA
nA
V
V
V
V
V
V
-I
DOFFOUTPUT
-I
DOFFCURRENT
+V
CLMP
(0-47)
V
OUT
= -10V, V
EN
= 4V, output and all unused
MUX inputs under test = +10V 3/, 4/, 7/
-100
-100
V
EN
= 4V, all unused MUX inputs under test are
open. 3/
+25°C
+125°C
-55°C
+25°C
+125°C
-55°C
18.0
18.0
17.5
-23.0
-23.5
-22.5
500
500
500
500
500
500
-V
CLMP
(0-47)
R
DS
(
ON
)(0-47)
A
R
DS
(
ON
)(0-47)
B
R
DS
(
ON
)(0-47)
C
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/
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 device under test. V
A
is the applied input voltage to the address lines A(0-3).
2/ V
IN
is the applied input voltage to the input channels CH0-CH47.
3/ V
EN
is the applied input voltage to the enable lines EN (0-15), EN (16-31) and EN (32-47).
4/ V
OUT
is the applied input voltage to the output lines 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.
7/ These parameters for Tc = -55°C are guaranteed by design, characterization, or correlation to other test parameters but not production tested
(Tc = -55°C to +125°C, +V
EE
= +15V, -V
EE
= -15V, V
REF
= +5.0V -- Unless otherwise specified)
SWITCHING CHARACTERISTICS
Symbol
t
A
HL
t
A
LH
Parameter
Switching Test MUX
Conditions
R
L
= 10K, C
L
= 50pF
R
L
= 10K, C
L
= 50pF
Tc = +25°C, +125°C
Tc = -55°C
Min
10
Max
1500
Units
ns
10
10
10
10
2000
5000
1500
1000
ns
ns
ns
ns
t
ON
EN
t
OFF
EN
SCD8502 Rev H 5/5/14
R
L
= 1K, C
L
= 50pF
4
Aeroflex Plainview
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
A3
X
L
L
L
L
L
L
L
L
H
H
H
H
H
H
H
H
TRUTH TABLE (CH16 – CH31)
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 CH0-15 and OUTPUT (0-15) and CURRENT (0-15).
1/ Between CH16-31 and OUTPUT (16-31) and CURRENT (16-31).
TRUTH TABLE (CH32 – CH47)
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(32-47)
H
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
"ON" CHANNEL 1/
NONE
CH32
CH33
CH34
CH35
CH36
CH37
CH38
CH39
CH40
CH41
CH42
CH43
CH44
CH45
CH46
CH47
Aeroflex Plainview
1/ Between CH32-47 and OUTPUT (32-47) and CURRENT (32-47)
SCD8502 Rev H 5/5/14
5
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