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All data sheets are subject to change without notice
(858) 503-3300 - Fax: (858) 503-3301 - www.maxwell.com
Nuclear Event Detector
HSN-3000
2005 Maxwell Technologies
All rights reserved.
01.07.05 Rev 3
F
EATURES
:
Detects ionizing radiation pulses
100% tested/certified detection threshold level
Adjustable circumvention period
Flag remembers event occurred
100% testable with built-in test
Detection threshold adjustability
Single +5V operation
Radiation hardness guaranteed
Compliant to MIL-PRF-38534 Class H
1
Flat pack (F) or DIP (L) packages
R
ADIATION
H
ARDNESS
C
HARACTERISTICS
:
Dose Rate (operate-through): 1 x 10
12
rad(Si)/sec
Total Dose: 1 x 10
6
rad(Si)
Neutron Fluence: 5 x 10
13
n/cm
2
Approximate Detection Range: 2 x 10
5
- 2 x 10
7
rad(Si)/sec
Maxwell Technologies Specified, Controlled, Tested and
Guaranteed
D
ESCRIPTION
:
Maxwell Technologies' HSN-3000 radiation-hardened Hybrid
Nuclear Event Detector (NED) senses ionizing radiation pulses
generated by a nuclear event, such as the detonation of a nuclear
weapon, and rapidly switches its outputs from the normal high
state to a low state with a propagation delay time of less than
20ns. The active low Nuclear Event Detection signal (NED) is
used to initiate a wide variety of circumvention functions, thus
preventing upset and burnout of electronic components. The NED
output is also used to initiate both hardware and software recov-
ery. The Nuclear Evet Flag signal (NEF) remembers the event
occurred and is used to distinguish between an actual event and
power up. The signal input of either Flag Reset or Flag Reset can
be used to reset the NEF output. This high-speed, 14-pin hybrid
detector is used in electronic systems as a general-purpose cir-
cumvention device to protect memory, stop data processing, and
drive power supply switches as well as signal clamps.
The HSN-3000 is guaranteed to operate through three critical
environments: ionizing dose rate [10
12
rad(Si)/s], gamma total
dose [10
6
rad(Si)], and neutron fluence [5 x 10
13
n/cm
2
]. In addi-
tion, the device is designed to function throughout the transient
neutron pulse. The hybrid's discrete design ensures a controlled
response in these radiation environments as well as immunity to
latchup. Each HSN-3000's detection level and functionality are
tested in an ionizing dose rate environment. A certificate is pro-
vided with each serialized hybrid, reporting the radiation test
results and guaranteeing its performance. The device is also lot
qualified in the total dose and neutron environments to ensure
performance.
The detection threshold of the HSN-3000 is adjustable within the
range of 2 x 10
5
rad(Si)/s to 2 x 10
7
rad(Si)/s. This detection level
can be preset by Maxwell or adjusted by the user. Less than a
30% variation in detection threshold can be expected over the
entire operating temperature range.
1.
Manufactured for Maxwell Technologies by Teledyne Microelectronic
Technologies to MIL-PRF-38534, Class H, No RHA
Detector
(Pin Diode)
Amplifier
Pulse Timer
LED
Logic
Latch
12
4
5
7
6
8
9
14
1
2
13
11
V
H
V
L
Threshold
Adjust
V
B
BIT
GND
C
RC
Flag
Reset
Flag
Reset
NEF
NED
10 k
10 k
Logic Diagram
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All data sheets are subject to change without notice
2005 Maxwell Technologies
All rights reserved.
Nuclear Event Detector
HSN-3000
01.07.05 Rev 3
T
ABLE
1. P
IN
D
ESCRIPTION
P
IN
N
UMBER
P
IN
F
UNCTION
1
Load Voltage, V
L
2
Nuclear Event Detector, NED
3
No Connection
4
External Capacitor
5
External Capacitor
6
Built In Test, BIT
7
Package Ground and Case
8
PIN Diode Bias, V
B
9
Threshold Adjust
10
No Connection
11
Flag Reset
12
Flag Reset
13
Nuclear Event Flag, NEF
14
Hardened Supply Voltage, V
H
T
ABLE
2. E
LECTRICAL
C
HARACTERISTICS
P
ARAMETER
S
YMBOL
C
ONDITIONS
-55
C < T
A
< 125
C
M
IN
M
AX
U
NIT
G
ROUP
A
S
UBGROUP
Hardened Supply Voltage
V
H
4.5
5.5
V
1,2,3
Hardened Supply Current
- Standby
1
- Flag Set
2
- Operational
3
I
H
V
H
= 5.5V
--
--
--
--
30
60
150
mA
1,2,3
Load Voltage
V
L
--
20
V
1,2,3
Load Current
- Standby
1
- Operational
3
I
L
V
L
= 20V
--
--
100
4.5
A
mA
1,2,3
PIN Diode Bias Voltage - Standby
1
V
B
4.5
20
V
1,2,3
PIN Diode Bias Current - Standby
1
I
B
--
100
A
1,2,3
FLAG RESET (Pin 12)
V
IH
I
IH
V
IL
I
IL
t
PW
V
IH
= 4.0V
V
IL
= 0.5V
V
IH
= 4.0V
4.0
--
--
--
250
--
4.0
0.5
100
--
V
mA
V
A
ns
7,8
1,2,3
7,8
1,2,3
9,10,11
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All data sheets are subject to change without notice
2005 Maxwell Technologies
All rights reserved.
Nuclear Event Detector
HSN-3000
01.07.05 Rev 3
FLAG RESET (Pin 11)
V
IL
I
IL
t
PW
V
IL
= 0.5V, V
H
= 5.5V
V
IL
= 0.5V
--
--
250
0.5
-30
--
V
mA
ns
7,8
1,2,3
9,10,11
Built-In-Test (BIT)
4,5
V
IH
I
IH
V
IL
I
IL
t
PW
V
IH
= 4.0V
V
IL
= 0.5V
Pin 9 Open, V
IH
= 4.0V
4.0
--
--
--
10
5.5
25
0.5
10
--
V
mA
V
A
s
7,8
1,2,3
7,8
1,2,3
9,10,11
NED
V
OH
V
OL
V
L
= 20V, I
OH
= -100 A
I
OL
= 10 mA
I
OL
= 100 mA
18.5
--
--
--
0.6
1.0
V
1,2,3
1,2,3
Radiation Propagation Delay Time
6
t
D
--
20
ns
NEF
V
OH
V
OL
V
L
= 20V, I
OH
= -100 A
I
OL
= 10 mA
18.5
--
--
0.6
V
1,2,3
1,2,3
1. Standby mode is the normal state of the device, defined as having both the NED and NEF outputs (pins 2 and 13) in the "high"
state.
2. Flag Set mode occurs after an event has been detected or BIT has been initiated and the NED output has timed out (i.e., has
transitioned to the "high" state), leaving the NEF output as the only remaining output in the low state.
3. Operational mode is in effect during the timeout period of the NED signal, characterized by having both the NED and NEF out-
puts in the "low" state, causing the greatest current draw of the device.
4. BIT electrical characteristics are not guaranteed over the radiation range.
5. BIT may not meet specification when only a resistor is used to adjust the detection level. To use BIT in this situation, it is
advised that a series resistor/capacitor combination is used.
6. Guaranteed but not tested over temperature. Time delay, t
D
, is measured at 50% points from the rising edge of the radiation
pulse to the falling edge of the NED output at approximately 10 times the detection level.
T
ABLE
2. E
LECTRICAL
C
HARACTERISTICS
P
ARAMETER
S
YMBOL
C
ONDITIONS
-55
C < T
A
< 125
C
M
IN
M
AX
U
NIT
G
ROUP
A
S
UBGROUP
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All data sheets are subject to change without notice
2005 Maxwell Technologies
All rights reserved.
Nuclear Event Detector
HSN-3000
01.07.05 Rev 3
M
ECHANICAL
D
IMENSIONS
Note: All dimensions in inches.
Important Notice:
The specifications presented within these data sheets represent the latest and most accurate information available to
date. However, these specifications are subject to change without notice and Maxwell Technologies assumes no
responsibility for the use of this information.
Maxwell Technologies' products are not authorized for use as critical components in life support devices or systems
without express written approval from Maxwell Technologies.
Any claim against Maxwell Technologies must be made within 90 days from the date of shipment from Maxwell Tech-
nologies. Maxwell Technologies' liability shall be limited to replacement of defective parts.
0.600
0.015 0.003
0.100
TYP
0.500
MIN
0.495
0.795
0.145 MAX
0.070 0.002
0.010 0.002
14 13 12 11 10
9
8
1
2
3
4
5
6
7
14 13 12 11 10
9
8
1
2
3
4
5
6
7
0.795
0.600
0.100 TYP
0.495
0.300
0.145 MAX
0.200
0.016
0.020
DIA
TOP VIEW
Flatpack Hybrid Package
HSN-3000F
DIP Hybrid Package
HSN-3000L
All tolerances are 0.005 unless specified
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All data sheets are subject to change without notice
2005 Maxwell Technologies
All rights reserved.
Nuclear Event Detector
HSN-3000
01.07.05 Rev 3
Product Ordering Options
Model Number
Feature
Option Details
HSN-3000
X
Package
Base Product
Nomenclature
L = Dual In-line Package (DIP)
F = Flat Pack
Nuclear Event Detector
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