INTEGRATED CIRCUITS
NE594/SA594
Vacuum fluorescent display driver
Product data
Supersedes data of 1994 Aug 31
File under Integrated Circuits, IC11 Handbook
2001 Aug 03
Philips
Semiconductors
Philips Semiconductors
Product specification
Vacuum fluorescent display driver
NE594/SA594
DESCRIPTION
The NE594/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 pull-down circuit on each output so that display
ghosting is minimized and no external components are required for
most fluorescent display applications.
PIN CONFIGURATIONS
N Package
IN 1
IN 2
IN 3
IN 4
IN 5
IN 6
IN 7
IN 8
1
2
3
4
5
6
7
8
9
TOP VIEW
18
17
16
15
14
13
12
11
10
OUT 1
OUT 2
OUT 3
OUT 4
OUT 5
OUT 6
OUT 7
OUT 8
V+
FEATURES
GND
•
Digit and/or segment drivers
•
Active output pull-down circuitry
•
High output breakdown voltage
•
Low supply voltage
•
Input compatible with all logic outputs
APPLICATIONS
D
1
Package
IN 1
IN 2
IN 3
IN 4
IN 5
IN 6
IN 7
IN 8
GND
1
2
3
4
5
6
7
8
9
20
19
18
17
16
15
14
13
12
11
OUT 1
OUT 2
OUT 3
OUT 4
OUT 5
OUT 6
OUT 7
OUT 8
V+
NC
•
Digital clocks
•
Dashboard displays
•
Panel displays
NC 10
TOP VIEW
NOTE:
1. SOL – Released in large SO package only.
SL00485
Figure 1. Pin Configurations
ORDERING INFORMATION
DESCRIPTION
18-Pin Plastic DIP
20-Pin Plastic SO
18-Pin Plastic DIP
20-Pin Plastic SO
TEMPERATURE RANGE
0
°C
to +70
°C
0
°C
to +70
°C
–40
°C
to +85
°C
–40
°C
to +85
°C
ORDER CODE
NE594N
NE594D
SA594N
SA594D
DWG #
SOT102-4
SOT163-1
SOT102-4
SOT163-1
2001 Aug 03
2
853-1045 26836
Philips Semiconductors
Product specification
Vacuum fluorescent display driver
NE594/SA594
EQUIVALENT SCHEMATIC
X8
R4
20 kΩ
Q3
R5
4.5 kΩ
Q4
R9
150 kΩ
V
CC
OUT
D1
R1
I
N
20 kΩ
R6
20 kΩ
Q7
Q2
Q1
R2
20 kΩ
R3
D2
7.5 kΩ
Q5
R7
10 kΩ
R8
10 kΩ
Q6
GND
SL00486
Figure 2. Equivalent Schematic
ABSOLUTE MAXIMUM RATINGS
(at 25
°C,
unless otherwise noted)
SYMBOL
V
CC
V
OUT
V
IN
I
OUT
Supply voltage
Output voltage
Input voltage
Output current
Each output
All outputs
Maximum power dissipation, T
amb
= 25
°C
(still-air)
1
N package
D package
Operating ambient temperature range
NE594
SA594
Storage temperature range
Maximum junction temperature
Lead soldering temperature (10 sec max)
PARAMETER
RATING
45
V
CC
–0.3, +20
50
200
1690
1390
0 to +70
–40 to +85
+65 to +150
–150
230
V
mA
mA
mW
mW
°C
°C
°C
°C
°C
UNIT
V
P
D
T
amb
T
stg
T
j
T
sld
NOTE:
1. Derate above 25
°C,
at the following rates:
N package at 13.5 mW/°C
D package at 11.1 mW/°C
2001 Aug 03
3
Philips Semiconductors
Product specification
Vacuum fluorescent display driver
NE594/SA594
DC ELECTRICAL CHARACTERISTICS
V
CC
=+4.75 V to +40 V; T
amb
= 0
°C
to +70
°C
(NE), T
amb
= –40
°C
to +85
°C
(SA), unless otherwise stated.
LIMITS
SYMBOL
V
CC
I
CCH
I
CCL
V
IN
V
IH
V
IL
I
IH
I
IL
I
IN
PARAMETER
Supply voltage range
Supply current (all outputs HIGH)
Supply current (all outputs LOW)
Input voltage range
Input voltage to ensure logic ‘1’
Input voltage to ensure logic ‘0’
Input current to ensure logic ‘1’
Input current to ensure logic ‘0’
Input current
V
IN
= 2.6 V
V
IN
= 5.0 V
V
IN
= 15.0 V
V
OH
g
g
Output high voltage
V
IN
= 3.5 V;
I
OUT
= –25 mA
V
OUT
with respect to V
CC
V
OH
V
OFF
I
OH
I
OUT
I
CEX
Output high, no load voltage
Output ‘OFF’ voltage level
Available output current
Output pull-down current
Output leakage current
T
amb
= 25
°C
Over temp.
V
CC
–1.5
V
CC
–2
V
CC
–1
60
180
0.68
V
CC
–1.1
V
CC
–1.3
V
CC
–0.8
10
–35
100
200
–1
–1
400
200
100
10
130
330
1.3
V
CC
= 40 V; V
IN
= 3.5 V
V
CC
= 40 V; V
IN
= 0.4 V
0
2.6
0.8
TEST CONDITIONS
Min
4.75
Typ
35
3
0.4
Max
40
6
1
15
UNIT
V
mA
mA
V
V
V
µA
µA
µA
µA
mA
V
V
V
mV
mA
µA
µA
V
IN
= 3.5 V; I
OUT
= 0; T
amb
= 25
°C;
V
OUT
with respect to V
CC
V
IN
= 0.8 V; I
OUT
= 0
V
CC
= 35 V; V
IN
= 3.5 V; V
OUT
= 30 V;
T
amb
= 25
°C
V
CC
= V
OUT
= 35 V; inputs open
T
amb
= 25
°C;
V
IN
= 0.4 V
V
CC
= 40 V; V
OUT
= 0 V
AC ELECTRICAL CHARACTERISTICS
V
CC
= 35 V; T
amb
= 25
°C.
SYMBOL
t
PLH
t
PHL
t
R
t
F
PARAMETER
Propagation delay
low–to–high output transition
Propagation delay
high–to–low output transition
Output rise time
Output fall time
TEST CONDITIONS
50% V
IN
to 50% V
OUT
50% V
IN
to 50% V
OUT
10% V
OUT
to 90% V
OUT
90% V
OUT
to 10% V
OUT
LIMITS
Min
Typ
1
3
0.5
1.5
Max
5
10
3
5
UNIT
µs
µs
µs
µs
2001 Aug 03
4
Philips Semiconductors
Product specification
Vacuum fluorescent display driver
NE594/SA594
SWITCHING TIMES OF DRIVERS
P
RR
5V
V
IN
0V
t
PDLH
34 V
90%
10%
t
PDLH
V
OUT
50%
50%
10%
0V
t
R
t
F
90%
SL00487
Figure 3. Switching Times of Drivers
V
CC
= 35 V
V
IN
P
RR = 10 kHz
t
R
= t
F
= (50 ns)
R
L
C
L
V
OUT
R
L
= 10 kΩ
C
L
= 50 pF
SL00488
Figure 4. Test Circuit
2001 Aug 03
5
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