Standard Products
Preliminary
MUX8561 16-Channel Analog Multiplexer Module
+5V, Radiation Tolerant
Kelvin Measurement Configured
www.aeroflex.com/mux
December 7, 2009
FEATURES
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16 Kelvin measurement channels provided by two 16-channel multiplexers
Single +5V power supply
Radiation performance
- Total dose:
150 krads(Si), Dose rate = 50 - 300 rads(Si)/s
- SEU:
Immune up to 90 MeV-cm
2
/mg
- SEL:
Immune by process design
Full military temperature range
Low power consumption < 5mW
CMOS analog switching allows rail to rail operation and low switch impedance
One address bus (A0-3), and one enable line
Fast access time < 500ns typical
Break-Before-Make switching
High analog input impedance (power on or off )
Designed for aerospace and high reliability space applications
Packaging – Hermetic ceramic
- 56 leads, 0.80"Sq x 0.20"Ht quad flat pack
- Typical Weight 6 grams
DSCC SMD 5962-10210 pending
Note: Aeroflex Plainview does not currently have a DSCC certified Radiation Hardened Assurance Program.
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GENERAL DESCRIPTION
Aeroflex’s MUX8561 is a radiation tolerant +5V only 16 Kelvin measurement channel multiplexer MCM
(Multi Chip Module).
The MUX8561 has been specifically designed to meet exposure to radiation environments. It is available in
a 56 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
MUX8561 is ideal for demanding military and space applications.
ORGANIZATION AND APPLICATION
The MUX8561 consists of two 16 channel +5V only multiplexers arranged as shown in the block diagram,
addressable by bus A
0
~A
3
including enable which connects the addressed channel to two separate 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.
SCD8561 Rev A
CH 0
16
CH 15
•
•
•
MUX 1
OUTPUT (0-15)
EN 0-15
+V
EE
16
MUX 2
V
REF
GND
CURRENT (0-15)
A0
A1
A2
A3
MUX8561: 16 CHANNEL ANALOG MUX BLOCK DIAGRAM
KELVIN MEASUREMENT CONFIGURED
SCD8561 Rev A
Preliminary
12/07/09
2
Aeroflex Plainview
ABSOLUTE MAXIMUM RATINGS
1/
Parameter
Case Operating Temperature Range
Storage Temperature Range
Supply Voltage
+V
EE
(Pin 18)
V
REF
(Pin 39)
Digital Input Overvoltage
V
EN
(Pin 13), V
A
(Pins 14, 15, 16, 17)
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
affect device reliability.
Range
-55 to +125
-65 to +150
+7.5
+7.5
< V
REF
+0.5
> GND -0.5
-0.5 < Vs < +7.5
Units
°C
°C
V
V
V
V
V
RECOMMENDED OPERATING CONDITIONS
1/
Symbol
+V
EE
V
REF
V
AL
V
AH
+5V Power Supply Voltage
Reference Voltage
Logic Low Level
Logic High Level
Parameter
Typical
+5.0
+5.00
+0.8
+4.0
Units
V
V
V
V
1/ Power Supply turn-on sequence shall be as follows: +V
EE
, followed by V
REF
(or tie these together).
18
DC ELECTRICAL PERFORMANCE CHARACTERISTICS
1/
(T
C
= -55°C to +125°C, +V
EE
= +5V, V
REF
= +5.0V - Unless otherwise specified)
Parameter
Supply Current
Symbol
+I
EE
+I
SBY
Address Input Current
I
AL
(0-3)
A
I
AH
(0-3)
A
Enable Input Current
I
ENL
(0-15)
I
ENH
(0-15)
Positive Input Leakage
Current CH0-CH15
Negative Input Leakage
Current CH0-CH15
Positive Output
Leakage Current
OUTPUTS (pins 12,45)
+I
SOFFOUTPUT
(
ALL
)
-I
SOFFOUTPUT
(
ALL
)
Conditions
V
EN
(0-15) = V
A
(0-3) = 0
V
EN
(0-15) = 4V, V
A
(0-3) = 0 7/
V
A
= 0V
V
A
= 5V
V
EN
(0-15) = 0V
V
EN
(0-15) = 5V
V
IN
= +5V, V
EN
= 4V, Outputs and all unused MUX
inputs under test = 0V 2/, 3/
V
IN
= 0V, V
EN
= 4V, Outputs and all unused MUX inputs
under test = +5V 2/, 3/
V
OUT
= +5V, V
EN
= 4V, All inputs grounded except
channel being tested 3/, 4/
Min
Max
Units
mA
mA
μA
μA
μA
μA
nA
nA
0
0
-1
-1
-1
-1
-200
-200
1
1
1
1
1
1
+200
+200
+I
DOFFOUTPUT
(
ALL
)
-50
+1500
nA
SCD8561 Rev A
Preliminary
12/07/09
3
Aeroflex Plainview
DC ELECTRICAL PERFORMANCE CHARACTERISTICS
1/
(continued)
(T
C
= -55°C to +125°C, +V
EE
= +5V, V
REF
= +5.0V - Unless otherwise specified)
Parameter
Switch ON Resistance
OUTPUTS
(pins 12,45) 6/
Symbol
R
DS
(
ON
)(0-15)
A
Conditions
V
IN
= +5V, V
EN
= 0.8V, I
OUT
= -1mA 2/, 3/, 5/
Min
50
Max
1000
Units
Ω
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-CH15.
3/ V
EN
is the applied input voltage to the enable line EN (0-15).
4/ V
OUT
is the applied input voltage to the output lines OUTPUT (0-15), CURRENT
(0-15)
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/ The MUX8561 cannot be operated with analog inputs below 0 volts.
7/ Not tested, guaranteed to the specified limits.
SWITCHING CHARACTERISTICS
(T
C
= -55°C to +125°C, +V
EE
= +5V, V
REF
= +5.0V - Unless otherwise specified)
Parameter
Switching Test MUX
Symbol
tAHL
tALH
t
ON
EN
Conditions
R
L
= 10K
Ω
,
C
L
= 50pF
Min
100
100
100
Max
700
700
700
700
Units
ns
ns
ns
ns
R
L
= 1K
Ω
,
C
L
= 50pF
t
OFF
EN
100
SCD8561 Rev A
Preliminary
12/07/09
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
1/ Between CH0-15 and OUTPUT (0-15), CURRENT (0-15)
SCD8561 Rev A
Preliminary
12/07/09
5
Aeroflex Plainview
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