HSN-1000L - Maxwell Technologies, Inc.

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Nuclear Event Detector

HSN-1000

All rights reserve d.

01.07.05 Rev 3

FEATURES:

• Detects ionizing radiation pulses

• 100% tested/certified detection threshold level

• Adjustable circumvention period

• 100% testable with built-in test

• Detection threshold adjustability

• Single +5V operation

• Radiation hardness guaranteed

• Compliant to MIL-PRF-38534 Class H1

• Flat pack (F) or DIP (L) packages

RADIATION HARDNESS

CHARACTERISTICS:

• Dose Rate (operate-through): 1 x 1012 rad(Si)/sec

• Total Dose: 1 x 106 rad(Si)

• Neutron Fluence: 5 x 1013 n/cm2

• Approximate Detection Range: 2 x 105 - 2 x 107 rad(Si)/sec

• Maxwell Technologies Specified, Controlled, Tested and

Guaranteed

DESCRIPTION:

Maxwell Technologies’ HSN-1000 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 output 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 als o used to initiat e both hardware and software recov-

ery. This high-speed, 14-pin hybrid detector is used in electronic

systems as a general-purpose circumvention device to protect

memory, stop data processing, and drive power supply switches

as well as signal clamps.

The HSN-1000 is guaranteed to operate through three critical

environments: ionizing dose rate [1012 rad(Si)/s], gamma total

dose [106 rad(Si)], and neutron fluenc e [5 x 1013 n/cm2]. In addi-

tion, the device is designed to function throughout the transient

neutron pulse. The hybrid’s discr ete design ensures a cont rolled

response in these radiation envir onments as well as immunity to

latchup. Each HSN-1000’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-1000 is adj ustable within the

range of 2 x 105 rad(Si)/s to 2 x 107 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. Manu factured for Max well Techn ologies by Teledyne Microelect r onic

Techn ologies to M IL- P R F -38 534, Cla s s H, no RHA

Detector

(Pin Diode) Amplifier Pulse Timer

LED

457

8 9 14 1

Threshold

Adjust

BIT

GND CRC

NED

10 k

Ω

Logic Diagram

All data sheets are subject to change without notice

All rights reserve d.

Nuclear Event Detector HSN-1000

01.07.05 Rev 3

TABLE 1. PIN DESCRIPTION

PIN NUMBER PIN FUNCTION

1 Load Voltage, VL

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, VB

9 Threshold Adjust

10 No Connection

11 No Connection

12 No Connection

13 No Connection

14 Hardened Supply Voltage, VH

TABLE 2. ELECTRICAL CHARACTERISTICS

PARAMETER SYMBOL CONDITIONS

-55°C < TA < 125°CMIN MAX UNIT GROUP A

SUBGROUP

Hardened Supply Voltage VH4.5 5.5 V 1,2,3

Hardened Supply Current

- Standby 1

- Operational 2

IHVH = 5.5V --

120

mA 1,2,3

Load Voltage VL-- 20 V 1,2,3

Load Current

- Standby 1

- Operational 2

ILVL = 20V --

-- 100

2.25 µA

1,2,3

PIN Diode Bias Voltage - Standby 1 V

B4.5 20 V 1,2,3

PIN Diode Bias Current - Standby 1IB-- 100 µA 1,2,3

Built-In-Test (BIT) 3,4 VIH

IIH

VIL

IIL

tPW

VIH = 4.0V

VIL = 0.5V

Pin 9 Open, VIH = 4.0V

4.0

5.5

0.5

µA

µs

7,8

1,2,3

7,8

1,2,3

9,10,11

NED VOH

VOL

VL = 20V, IOH = -100 µA

IOL = 10 mA

IOL = 100 mA

18.5

0.6

1.0

V 1,2,3

1,2,3

Radiation Propagation Delay Time 5tD-- 20 ns

All data sheets are subject to change without notice

All rights reserve d.

Nuclear Event Detector HSN-1000

01.07.05 Rev 3

MECHANICAL DIMENSIONS

Note: All dimensions in inches.

1. Standby mode is the normal state of the device, defined as having the NED output (pin 2) in the “high” state.

2. Operational mode is in effect during the timeout period of the NED signal, characterized by having the NED output in the “low”

state, causing the greatest current draw of the device.

3. BIT electrical characteristics are not guaranteed over the radiation range.

4. 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.

5. Guaranteed but not tested over temperature. Time delay, tD, 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.

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

1234567

14 13 12 11 10 9 8

1234567

0.795

0.600

0.100 TYP

0.495

0.300

0.145 MAX

0.200

0.016

0.020DIA

TOP VIEW

Flatpack Hybrid Package

HSN-1000F

DIP Hybrid Package

HSN-1000L

All tolerances are ± 0.005 unless specified

Table 2. Notes

All data sheets are subject to change without notice

All rights reserve d.

Nuclear Event Detector HSN-1000

01.07.05 Rev 3

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.

Product Ordering Options

Model Number

Feature Option Details

HSN-1000 X

Package

Base Product

Nomenclature

L = Dual In-line Package (DIP)

F = Flat Pack

Nuclear Event Detector