NTE2030
Integrated Circuit
High Voltage Segment Driver for
Gas Discharge Tubes
Description:
The NTE2030 is capable of driving 8 segments of a high voltage display tube with a constant output
sink current, which can be adjusted by external program resistor, R
p
. The program current is half that
of output "ON" current. In the "OFF" state the outputs can tolerate more than 80V. The ratio of "ON"
output currents is within
10%. Inputs have negative clamp diodes. Active high input logic. The main
application of the device is to interface MOS circuits to high - voltage displays.
Features:
D
Versatile Circuits for a Wide Range of Display Applications
D
High Breakdown Voltages
D
Low Power Dissipation
Absolute Maximum Ratings;
Input Voltage (Note 2)
- 20V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output Voltage
85V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating Temperature Range
0
to +70
C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage Temperature Range
- 65
to +150
C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lead Temperature (During Soldering, 10sec)
+300
C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Note 1 "Absolute Maximum Ratings" are those values beyond which the safety of the device cannot
be guaranteed. Except "Operating Temperature Range" they are note meant to imply that
the devices should be operated at these limits. The table of "Electrical Characteristics" pro-
vides conditions for actual device operation.
Note 2 All voltage for NTE2030 with respect to V
CC
= 0V.
DC Electrical Characteristics: (Note 2 & Note 3)
Parameter
Symbol
Test Conditions
Min
Typ
Max
Unit
Input Current
I
I
V
IN
= 6.0V
150
250
350
A
Logical "0" Input Current
I
IL
I
OUT
= 5.0
A, V
OUT
= 75V
-
-
7.0
A
Logical "1" Input Current
I
IH
I
OUT
= 1.4mA, I
IP
= 850
A, V
OUT
= 50V
80
-
-
A
Input Clamp Voltage
V
I
I
IN
= - 1.0mA, T
A
= +25
C
-
-0.68
-0.85
V
Note 2 All voltage for NTE2030 with respect to V
CC
= 0V.
Note 3 Unless otherwise specified, Min/Max limits apply across the 0
C to +70
C. All typicals are
given for T
A
= +25
C.
DC Electrical Characteristics (Cont'd): (Note 2 & Note 3)
Parameter
Symbol
Test Conditions
Min
Typ
Max
Unit
Output Breakdown Voltage
V
OH
I
OUT
= 100
A, I
IN
= 0
A
80
-
-
V
Output Leakage Current
I
CEX
V
OUT
= - 75V, - 0.1mA
I
IN
7.0
A
-
0.02
5.0
A
Prog Input Voltage
I
PROG
I
IP
= 150
A
1.8
2.3
-
V
-
4.0
4.5
Logical "0" Output Current
I
OL
V
OUT
= 50V,
I
IP
= 150
A
240
300
360
A
80
A
I
IN
I
IP
I
IP
= 400
A
680
800
920
A
I
IP
= 850
A
1.53
1.7
1.87
mA
Output Current Ratio
I
O
I
OUT
b Ref = 1.7mA, V
OUT
= 50V
0.9
1.0
1.1
Note 2 All voltage for NTE2030 with respect to V
CC
= 0V.
Note 3 Unless otherwise specified, Min/Max limits apply across the 0
C to +70
C. All typicals are
given for T
A
= +25
C.
Note 4 Supply currents specified for any one input = - 1.0V. All other inputs = - 5.5V and selected
output having 16mA load.
AC Electrical Characteristics: (T
A
= +25
C, unless otherwise indicated)
Parameter
Symbol
Test Conditions
Min
Typ
Max Unit
Propagation Delay to a Logical
"0" from Input to Output
t
pd0
R
P
= 6k to 6V, R
OUT
= 1k to 6V
-
37
100
ns
Propagation Delay to a Logical
"1" from Input to Output
t
pd1
Input Ramp Rate
15ns, Freq = 1MHz,
DC = 50%, Amplitude = 6.0V
-
92
200
ns
Note 2 All voltage for NTE2030 with respect to V
CC
= 0V.
Note 3 Unless otherwise specified, Min/Max limits apply across the 0
C to 70
C. All typicals are
given for T
A
= +25
C.
Note 4 Supply currents specified for any one input = - 1.0V. All other inputs = - 5.5V and selected
output having 16mA load.
V
DD
Pin Connection Diagram
Input 3
Input 1
Input 2
Input 8
Output 7
Output 8
1
2
3
4
Current
5
Input 4
6
Input 5
7
Input 6
8
Input 7
18
17
16
15
Output 2
Output 3
Output 4
14
Output 5
13
Output 6
12
11
Substrate (GND)
9
10
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