Philips Semiconductors Linear Products
Product specification
NE/SA594
Vacuum fluorescent display driver
539
August 31, 1994
853-1045 13721
DESCRIPTION
The NE/SA594 is a display driver interface for vacuum fluorescent
displays. The device is comprised of 8 drivers and a bias network,
and is capable of driving the digits and/or segments of most vacuum
fluorescent displays.
The inputs are designed to be compatible with TTL, DTL, NMOS,
PMOS or CMOS output circuitry.
There is an active pulldown circuit on each output so that display
ghosting is minimized and no external components are required for
most fluorescent display applications.
FEATURES
Digit and/or segment drivers
Active output pulldown circuitry
High output breakdown voltage
Low supply voltage
Input compatible with all logic outputs
APPLICATIONS
Digital clocks
Dashboard displays
Panel displays
PIN CONFIGURATIONS
1
2
3
4
5
6
7
8
9
10
11
12
18
17
16
15
14
13
N, F Packages
TOP VIEW
1
2
3
4
5
6
7
8
9
10
11
12
13
14
20
19
18
17
16
15
D
1
Package
TOP VIEW
NOTE:
1. SOL Released in large SO package only.
IN 1
IN 2
IN 3
IN 4
IN 5
IN 6
IN 7
IN 8
GND
OUT 1
OUT 2
OUT 3
OUT 4
OUT 5
OUT 6
OUT 7
OUT 8
V+
IN 1
IN 2
IN 3
IN 4
IN 5
IN 6
IN 7
IN 8
GND
OUT 1
OUT 2
OUT 3
OUT 4
OUT 5
OUT 6
OUT 7
OUT 8
V+
NC
NC
ORDERING INFORMATION
DESCRIPTION
TEMPERATURE RANGE
ORDER CODE
DWG #
18Pin Plastic DIP
0 to +70
C
NE594N
0407A
18Pin Ceramic DIP
0 to +70
C
NE594F
0583A
20Pin Plastic SO
0 to +70
C
NE594D
0408B
18Pin Plastic DIP
40
C to +85
C
SA594N
0407A
18Pin Ceramic DIP
40
C to +85
C
SA594F
0583A
20Pin Plastic SO
40
C to +85
C
SA594D
0408B
Philips Semiconductors Linear Products
Product specification
NE/SA594
Vacuum fluorescent display driver
August 31, 1994
540
EQUIVALENT SCHEMATIC
IN
R1
20K
R2
20K
X8
4.5K
R4
20K
R5
D1
Q3
R6
20K
Q4
OUT
Q2
Q1
R3
7.5K
D2
Q5
R7
10K
R8
10
K
Q7
Q6
R9
150
K
VCC
GND
ABSOLUTE MAXIMUM RATINGS
(at 25
C, unless otherwise noted)
SYMBOL
PARAMETER
RATING
UNIT
V
CC
Supply voltage
45
V
V
OUT
Output voltage
V
CC
V
IN
Input voltage
0.3, +20
V
Output current
I
OUT
Each output
50
mA
All outputs
200
mA
Maximum power dissipation,
T
A
=25
C (stillair)
1
P
D
F package
N package
D package
1500
1690
1390
mW
mW
mW
Operating ambient temperature range
T
A
NE594
0 to 70
C
SA594
40 to +85
C
T
STG
Storage temperature range
+65 to +150
C
T
J
Maximum junction temperature
150
C
T
SOLD
Lead soldering temperature (10sec max)
300
C
NOTES:
1. Derate above 25
C, at the following rates:
F package at 12.0mW/
C
N package at 13.5mW/
C
D package at 11.1mW/
C
Philips Semiconductors Linear Products
Product specification
NE/SA594
Vacuum fluorescent display driver
August 31, 1994
541
DC ELECTRICAL CHARACTERISTICS
V
CC
=+4.75 to +40V, T
A
=0 to 70
C (NE), T
A
= 40 to +85
C (SA), unless otherwise stated.
SYMBOL
PARAMETER
TEST CONDITIONS
LIMITS
UNIT
SYMBOL
PARAMETER
TEST CONDITIONS
Min
Typ
Max
UNIT
V
CC
Supply voltage range
4.75
35
40
V
I
CCH
Supply current (all outputs high)
V
CC
=40V, V
IN
=3.5V
3
6
mA
I
CCL
Supply current (all outputs low)
V
CC
=40V, V
IN
=0.4V
0.4
1
mA
V
IN
Input voltage range
0
15
V
V
IH
Input voltage to ensure logic "1'
2.6
V
V
IL
Input voltage to ensure logic "0'
0.8
V
I
IH
Input current to ensure logic "1'
100
A
I
IL
Input current to ensure logic "0'
10
A
I
IN
Input current
V
IN
=2.6V
60
130
A
V
IN
=5.0V
180
330
A
V
IN
=15.0V
.68
1.3
mA
V
OH
Output high voltage
V
IN
=3.5V
I
OUT
=25mA
T
A
=25
C
V
CC
1.5
V
CC
1.1
V
Over temp.
V
CC
2
V
CC
1.3
V
V
OUT
with respect
to V
CC
V
OH
Output high, no load voltage
V
IN
=3.5V,
I
OUT
=0, T
A
=25
C,
V
OUT
with respect to V
CC
V
CC
1
V
CC
0.8
V
V
OFF
Output `OFF' voltage level
V
IN
=0.8V,
I
OUT
=0
10
200
mV
I
OH
Available output current
V
CC
=35V, V
IN
=3.5V,
V
OUT
=30V, T
A
=25
C
35
mA
I
OUT
Output pull-down current
V
CC
=V
OUT
=35V,
Inputs open
100
200
400
A
I
CEX
Output leakage current
T
A
=25
C, V
IN
=0.4V
V
CC
=40V, V
OUT
=0V
1
1
A
AC ELECTRICAL CHARACTERISTICS
V
CC
=35V, T
A
=25
C
SYMBOL
PARAMETER
TEST CONDITIONS
LIMITS
UNIT
SYMBOL
PARAMETER
TEST CONDITIONS
Min
Typ
Max
UNIT
t
PLH
Propagation delay--lowtohigh output transition
50% V
IN
to 50% V
OUT
1
5
s
t
PHL
Propagation delay--hightolow output transition
50% V
IN
to 50% V
OUT
3
10
s
t
R
Output rise time
10% V
OUT
to 90% V
OUT
0.5
3
s
t
F
Output fall time
90% V
OUT
to 10% V
OUT
1.5
5
s
Philips Semiconductors Linear Products
Product specification
NE/SA594
Vacuum fluorescent display driver
August 31, 1994
542
SWITCHING TIMES OF DRIVERS
5V
0
VIN
34V
VOUT
90%
50%
10%
tPDLH
0V
PRR
tPDLH
10%
50%
90%
tR
tF
PRR
tF
tF
Figure 1. Test Circuit
VIN
PRR = 10kHz
tR = tF = (50ns)
Vcc = 35V
RL
CL
RL = 10k
CL = 50pF
VOUT
Philips Semiconductors Linear Products
Product specification
NE/SA594
Vacuum fluorescent display driver
August 31, 1994
543
TYPICAL PERFORMANCE CHARACTERISTICS
VOUT
(V)
I
IN
vs V
IN
I
CCH
vs Temperature
Output Voltage vs Output Current
I
CC
vs V
CC
(All inputs High)
1000
800
600
400
200
0
0
5
10
15
20
IIN
(
A)
VIN (V)
VCC = 40V
ICCH
(mA)
TEMPERATURE
o
C
5
4
3
2
1
0
40
0
25
50
85
VCC
VCC
VCC
VCC
VCC
VCC
1
2
3
4
5
0
10
20
30
40
50
IOUT (mA)
TA =
25
o
C
TA =
25
o
C
5
4
3
2
1
0
0
10
20
30
40
50
VCC (V)
ICCH
(mA)
Philips Semiconductors Linear Products
Product specification
NE/SA594
Vacuum fluorescent display driver
August 31, 1994
544
2N222
O
C
1/2
LM393
R9
15K
Figure 2. Typical Application: Digital Clock With Alarm
T1
40V
RMS
1N4002
+
0.4
7
F
2
78mG
R7
5.6K
R8
50K
DIMMER
ADJUST
4
1N914
.1
F
ALARM
SET
N.O.
HOUR
SET
N.O.
MIN
SET
N.O.
10
+12V
R1
100K
R4
100K
R5
1 MEG
4
5
1/2
LM393
+12V
R3
10K
6
2
3
+12V
8
1
R2
10K
7
5.6
1W
5.6
1W
Z, 5.6V
IN 752
+V
10 11
9
8
F
I
L
12
A
M
S
E
G
A/P
D
I
G
I
T
A
M
S
E
G
A
S
E
G
7
L
S
E
G
D
S
E
G
10
HR
D
I
G
I
T
10
HR
D
I
G
I
T
S
H
I9
E
L
D
ITRON JJA
CLOCK DISPLAY
6
5
4
3
2
13 14 15 16 17 18
+12V
28
6
5
1
7
8
27
9
24
4
2
26
+V
NE/SA594
+ V + 16 TO + 40V
78
HV12
1
2
3
22
11
12
ALARM
OFF
ALARM
ENABLE
N.C.
N.O.
SNOOZE
Q1
R6
100
8
NE/SA594
9
8 7
6
5
4
3
2
10 11 12 13 14 15 16 17 18
S
G
C
O
L
10
MIN
D
I
G
C
S
E
G
1
MIN
D
I
G
E
S
E
G
E
G
F
S
E
G
B
S
E
G
F
I
L
O
N
D
I
I
T
I
T
I
T
G
13
14
15
23
18
19
17
25
3
MK
50250
T2
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