Standard Products
Preliminary
RadHard-by-Design
RHD5921 Analog Voltage Multiplexer
16-Channel, Buffered
www.aeroflex.com/RHDseries
March 8, 2011
FEATURES
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Single power supply operation at 3.3V to 5V
Radiation performance
- Total dose:
>1Mrad(Si); Dose rate = 50 - 300 rads(Si)/s
- ELDRS Immune
- SEL Immune
>100 MeV-cm
2
/mg
- Neutron Displacement Damage >10
14
neutrons/cm
2
Full military temperature range
Low Power consumption when enabled
CMOS analog switching allows rail to rail operation and low switch impedance
Address bus (A
0-3
), and one enable line
High input impedance
Designed for aerospace and high reliability space applications
Packaging – Hermetic ceramic
- 24-pin, 0.3"W x 0.6"L x 0.12"Ht SOIC
- Typical Weight 2 grams
DSCC SMD 5962-10243 pending
GENERAL DESCRIPTION
Aeroflex’s RHD5921 is a radiation hardened, single supply, 16 channel buffered output multiplexer in a
24-pin SOIC package. The RHD5921 design uses specific circuit topology and layout methods to mitigate
total ionizing dose effects and single event latchup. These characteristics make the RHD5921 especially
suited for the harsh environment encountered in Deep Space missions. It is guaranteed operational from
-55°C to +125°C. Available screened in accordance with MIL-PRF-38534 Class K, the RHD5921 is ideal
for demanding military and space applications.
ORGANIZATION AND APPLICATION
The RHD5921 is a 16 to 1 CMOS buffered output voltage multiplexer. Channel selection is controlled by 4
bit binary addressing and an active low enable. Multiplexed voltages are buffered by a unity gain CMOS
Rail-to-Rail amplifier. When the RHD5921 is disabled, the chip is put into a power-down state and the
output is tri-stated.
The devices will not latch with SEU events to above 100 MeV-cm
2
/mg. Total dose degradation is minimal
to above 1Mrad(Si). Displacement damage environments to neutron fluence equivalents in the mid 10
14
neutrons per cm
2
range are readily tolerated. There is no sensitivity to low-dose rate (ELDRS) effects. SEU
effects are application dependant.
SCD5921 Rev B
ABSOLUTE MAXIMUM RATINGS
Parameter
Case Operating Temperature Range
Storage Temperature Range
Supply Voltage
(+V
CC
)
Digital Input Overvoltage
(V
EN
, V
A
)
Analog Input Overvoltage
(CH0-CH15)
Range
-55 to +125
-65 to +150
+6.0
< V
CC
+0.4
> GND -0.4
< V
CC
+0.4
> GND -0.4
Units
°C
°C
V
V
V
V
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.
RECOMMENDED OPERATING CONDITIONS
Symbol
+V
CC
V
EN
, V
A
V
EN
, V
A
Power Supply Voltage
Logic Low Level
Logic High Level
Parameter
Typical
3.3 to 5.0
30% V
CC
70% V
CC
Units
V
V
V
ELECTRICAL PERFORMANCE CHARACTERISTICS
(T
C
= -55°C
TO
+125°C, +V
CC
= +5V -- U
NLESS OTHERWISE SPECIFIED
)
Parameter
Supply Current
(+V
CC
)
Symbol
+I
CC
+I
SBY
I
AL
Address Input Current
(A0-A3)
I
AH
V
A
= 70% V
CC
+125°C
+25°C
I
ENL
Enable Input Current
(EN)
I
ENH
V
EN
= 70% V
CC
+125°C
Input Leakage Current
(CH0-CH15)
Output Leakage Current
(V
OUT
)
+I
INLK
V
IN
= +5V, V
EN
=70% V
CC
,
+25°C
Output and all unused MUX inputs under test =
0V
+125°C
+25°C
+I
OUTLK
Tri-state, V
EN
> 70% V
CC
+125°C
-20
20
nA
-50
-5
-50
-5
50
5
50
5
nA
nA
nA
nA
V
EN
= 30% V
CC
+125°C
+25°C
-50
-5
50
5
nA
nA
-50
-5
50
5
nA
nA
EN = 30% V
CC
EN = 70% V
CC
+25°C
V
A
= 30% V
CC
+125°C
+25°C
-50
-5
50
5
nA
nA
Conditions
Min
0.5
10
-5
Max
2
100
5
Units
mA
A
nA
SCD5921 Rev B
Preliminary
3/8/11
3
Aeroflex Plainview
ELECTRICAL PERFORMANCE CHARACTERISTICS (continued)
(T
C
= -55°C
TO
+125°C, +V
CC
= +5V -- U
NLESS OTHERWISE SPECIFIED
)
Parameter
Symbol
V
ON
1
Output ON Voltage
V
ON
2
V
ON
3
Conditions
V
IN
= 5 Volts, R
L
= 10K
V
IN
= 5 Volts, R
L
= 1K
V
IN
= 3.3 Volts, R
L
= 10K
Min
4.9
4.35
3.2
Max
5.1
4.65
3.4
Units
V
V
V
SWITCHING CHARACTERISTICS
(T
C
= -55°C
TO
+125°C, +V
CC
= +5V -- U
NLESS OTHERWISE SPECIFIED
)
Parameter
Address to Output Delay (ON, OFF)
T
A
LH
Symbol
T
A
HL
Conditions
f = 10KHz, V
IN
= 5 Volts, R
L
= 10K
Min
1
1
1.8
0.8
Max
5
5
4
2.5
350
Units
us
us
V/us
us
ns
Output Slew Rate
Enable to Output Delay
T
S
T
ONEN
f = 10KHz, V
IN
= 5 Volts, R
L
= 1K
T
OFFEN
100
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
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-CH15) and V
OUT
SCD5921 Rev B
Preliminary
3/8/11
4
Aeroflex Plainview
FPGA/CPLD
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