3

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

V

--

--

250

0.5

-30

--

V

mA

ns

7,8

1,2,3

9,10,11

V

IH

I

IH

V

IL

I

IL

t

PW

V

V

Pin 9 Open, V

4.0

--

--

--

10

5.5

25

0.5

10

--

V

mA

V

µA

µs

7,8

1,2,3

7,8

1,2,3

9,10,11

NED

V

OH

V

OL

V

I

I

18.5

--

--

--

0.6

1.0

V

1,2,3

1,2,3

t

D

--

20

ns

NEF

V

OH

V

OL

V

I

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

pulse to the falling edge of the NED output at approximately 10 times the detection level.