DIONICS, INC.
Phone: (516) 997-7474
65 Rushmore Street Fax: (516) 997-7479
Westbury, NY 11590 Website: www.dionics-usa.com
GAS DISCHARGE DISPLAY SEGMENT DRIVERS
DI-232 DI-242
General Description:
The DIONICS DI-232 and DI-242 circuits are
designed to drive gas discharge display devices
from signals originating from MOS or TTL
circuitry. Each output is a switched programmable
constant current sink with a voltage compliance of
80 Volts or 125 Volts.
These circuits provide for simple interface with
display such as Beckman, SP-452, Cherry W410-
1051 or Dale PD-16A040.
Features:
!
High Breakdown Voltage: 80V or 125V.
!
High Input Voltage Capability: 40V
!
TTL or MOS Compatible
!
Each Output Programmed By a Single
Resistor
!
Requires Few Additional Components
!
Dielectrically Isolated Integrated Circuits
!
DC Restoring Input Diode
PROG.
Circuit Schematic
(Each Section)
Output
Input
GND
Package Layout:
395
8
DIONICS INC.
DI-242
1080 11
410
10
435
40 2
100 5
3810
202
1000 5
293 20
175
03/2003
In5
13
15
Out6
5
In9
Out2
Out9
17
21
Out8
16
20
Pin Connections
9
6
In3
Out4
19
In6
22
2
11
In7
PROG
3
In1
10
Out7
In8
Out1
18
In4
14
8
12
Out5
7
Out3
4
1
GND
In2
PROG
NC
0
C)
Absolute Maximum Rating (Ta = 25
Characteristic Symbo
tage
V
in
spect to
40
V
Output Current
mA
I
o
5
Output Voltage DI-232
easured With Respect to GND Terminal
V
o
M
80
V
Output Voltage DI-242
V
o
Measured With Respect to GND Terminal
125
V
Power Dissipation DI-232; DI-242
mW
P
D
Derate at 8 mW/
0
C Above 25
0
C Ambient
1100
Storage Temperature
T
s
-55 to +125
0
C
Operating Temperature
T
o
0 to +70
0
C
l
Notes
Limits
Units
Input Vol
Measured With Re
GND Terminal
Electrical Characteristics (Ta = 25
0
C)
Parameter Symbol
Conditions
M .
Ty .
Max.
Units
in
p
o
(SAT)
3.5V; R
p
=27k
5 V
(OFF)
V
o
= Rated Voltage; V
i
= 0.4V;
R
p
= 27k
; V
p
= 10V
; V
i
=3.5V; R
p
=27k
; V
Output Current
I
o
(ON)
V
o
=60V; V
i
=3.5V; R
p
=27k
; V
p
=10V 0.85
mA
1.00 1.15
Input Current
I
i
V
i
= 7.0V
250 370 500 A
Output Saturation Voltage
V
I
o
=1mA; V
i
=
; V
p
=10V
Output Leakage Current
I
o
0.1 10 A
Output Current Match
I
o
/ I
o
V
o
=60V
p
=10V
5 10 %
Typical Application:
Output
Vp
+
Input
-
PROG
Simplified Test Circuit
Vo
Vi
+
Vr
-
GND
Iin
Rp
Iout
+
-
Vpd
Vpc
Rpd
DIONICS INC.
DI-232 xxxx
Vpa
Rpc
Vpb
Rpa
Rpb
Inputs
C
Inputs
B
Inputs
A
DIONICS INC.
DI-232 xxxx
Inputs
D
ALPHA NUMERIC DISPLAY
TWO DI-232 PROVIDE 4 GROUPS OF
OUTPUTS EACH HAVING DIFFERENT AND
INDEPENDENT PROGRAMMED SEGMENT
CURRENT LEVELS
Vp: PROGRAM VOLTAGE
Rp: PROGRAM RESISTOR
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