Supertex inc.
32-Channel Vacuum-Fluorescent
Display Driver
Features
►
32 output lines
►
90V output swing
►
Active pull-down
►
Latches on all outputs
►
-40°C to +85°C operation
►
Up to 6.0MHz @ V
DD
= 5.0V
HV518
General Description
The HV518 is designed for vacuum fluorescent or DC plasma
applications, where it can serve as a segment, digit or matrix
display driver. Each device has 32 outputs, 32 latches and a
32-bit cascadable shift register.
Serial data enters the shift register on the LOW-to-HIGH
transition of the clock input. With latch enable (LE) HIGH,
parallel data is transferred to the output buffers through a
32-bit latch. When LE is low the data is stored in the latch.
When STROBE (STR) is LOW, all outputs are enabled; if
STROBE is HIGH, all outputs are LOW.
Applications
►
Vacuum flourescent displays
►
DC plasma displays
Block Diagram
LE
STR
VPP
DIN
CLK
DOUT
HV
OUT
1
32-Bit
Shift
Register
Latches
HV
OUT
32
Supertex inc.
1235 Bordeaux Drive, Sunnyvale, CA 94089
Tel: 408-222-8888
www.supertex.com
HV518
Ordering Information
Package Options
Device
2.095x.580in body (max)
.250in height (max)
.100in pitch
40-Lead PDIP
.653x.653in body
.180in height (max)
.050in pitch
44-Lead PLCC
HV518
HV518P-G
HV518PJ-G
-G indicates package is RoHS compliant (‘Green’)
Absolute Maximum Ratings
Parameter
Supply voltage, V
DD
Supply voltage, V
PP
Logic input levels
Continuous total power dissipation
1,2
Operating temperature
Storage temperature
Value
-0.5V to +6.0V
-0.5V to +90V
-0.5V to V
DD
+0.5V
1200mW
-40°C to +85°C
-65°C to +150°C
Pin Configurations
1
40
6
1 44
40
Absolute Maximum Ratings are those values beyond which damage to the
device may occur. Functional operation under these conditions is not implied.
Continuous operation of the device at the absolute rating level may affect
device reliability. All voltages are referenced to GND.
Notes:
1. Duty cycle is limited by the total power dissipated in the package.
2. For operation above 25
O
C ambient, derate linearly to 85
O
C at 20mW/
O
C.
40-Lead PDIP (P)
(top view)
44-Lead PLCC (PJ)
(top view)
Product Markings
Top Marking
H V 518P
YYWW
LLLLLLLLLL
Bottom Marking
CCCCCCCCCCC
AAA
Y = Last Digit of Year Sealed
WW = Week Sealed
L = Lot Number
C = Country of Origin*
A = Assembler ID*
= “Green” Packaging
*May be part of top marking
Package may or may not include the following marks: Si or
40-Lead PDIP (P)
Top Marking
HV518PJ
YYWW
LLLLLLLLLL
Bottom Marking
CCCCCCCCCCC
AAA
YY = Year Sealed
WW = Week Sealed
L = Lot Number
C = Country of Origin*
A = Assembler ID*
= “Green” Packaging
*May be part of top marking
Package may or may not include the following marks: Si or
44-Lead PLCC (PJ)
Supertex inc.
1235 Bordeaux Drive, Sunnyvale, CA 94089
2
Tel: 408-222-8888
www.supertex.com
HV518
Recommended Operating Conditions
(T
Sym
V
DD
V
PP
V
IH
V
IL
I
OH
I
OL
f
CLK
t
w(CKH)
t
w(CKL)
t
su
t
h
T
A
Parameter
Logic supply voltage
High voltage supply
High-level input voltage
Low-level input voltage
High-level output current
Low-level output current
Clock frequency
Pulse duration, clock high
Pulse duration, clock low
Setup time, data before clock
Hold time, data after clock
Operating ambient temperature
A
= 25°C, unless otherwise noted)
Min
4.5
8.0
3.5
-
-25
-
-
83
83
75
75
-40
Max
5.5
80
-
1.0
-
2.0
6.0
-
-
-
-
85
Unit
V
V
V
V
mA
mA
MHz
ns
ns
ns
ns
°C
Conditions
---
---
V
DD
= 4.5V, See Figure 1
V
DD
= 4.5V, See Figure 1
---
---
V
DD
= 4.5V, See Figure 1
V
DD
= 4.5V
V
DD
= 4.5V
V
DD
= 4.5V
V
DD
= 4.5V
---
Electrical Characteristics
(over recommended ranges of operating ambient temperature unless otherwise noted.)
Sym
I
DD
I
DDQ
I
PP
Parameter
Supply current
Quiescent supply current
Supply current
HV output
Serial output
HV output
Serial output
Min
-
-
-
-
-
V
OH
V
OL
I
IH
I
IL
HV
IN
operating current
LV
IN
operating current
Logic input current high
Logic input current low
70
4.5
-
-
-
-
Typ
-
-
-
7.0
-
-
4.9
-
0.06
0.1
-0.1
Max
10
0.5
12
10
500
-
5.0
5.0
0.8
1.0
-1.0
Units
mA
mA
mA
mA
µA
V
V
µA
µA
Conditions
V
DD
= 5.0V, f
CH
= 6.0 MHz
V
DD
= 5.5V, V
IN
= 0V
Outputs high, T
A
= -40
O
Outputs high, T
A
= 0 to +85
O
Outputs low
I
OH
= -25mA
V
DD
= 5.0V, I
OH
= -20µA
I
OL
= 1.0mA
I
OL
= 20µA
V
IH
= V
DD
V
IL
= 0V
Note:
The total number of ON outputs times the duty cycle must not exceed the allowable package power disspation.
Switching Characteristics
(V
Sym
t
d
t
DHL
t
DLH
t
THL
t
TLH
Parameter
Delay time, clock to data output
Delay time, high-to-low-
level, HV output
Delay time, low-to-high-
level, HV output
PP
= 80V, C
L
= 50pF, T
A
= 25°C, unless otherwise noted)
Min
-
-
-
-
-
-
-
From latch enable
From strobe
From latch enable
From strobe
Typ
-
-
-
-
-
-
-
Max
600
1.5
1.0
1.5
1.0
3.0
2.5
Unit
ns
µs
µs
µs
µs
Conditions
C
L
= 15pF, See Figure 2
V
DD
= 4.5V, See Figure 3
V
DD
= 4.5V, See Figure 4
V
DD
= 4.5V, See Figure 3
V
DD
= 4.5V, See Figure 4
V
DD
= 4.5V, See Figure 4
V
DD
= 4.5V, See Figure 4
www.supertex.com
Transition time, high-to-low-level, HV output
Transition time, low-to-high-level, HV output
Supertex inc.
1235 Bordeaux Drive, Sunnyvale, CA 94089
3
Tel: 408-222-8888
HV518
Power-Up/ Power-Down Sequences
Power-up sequence should be the following:
1. Connect ground.
2.
Apply V
DD
.
3.
Set all inputs (Data, CLK, EN, etc.) to a known state.
4.
Apply V
PP
.
The V
PP
should not drop below V
DD
or float during operation.
Power-down sequence should be the reverse of the above.
Input and Output Equivalent Circuits
VDD
VDD
VPP
INPUT
DATA
OUT
HV
OUT
GND
GND
GND
Parameter Measurement Information
t
w(CKH)
V
IH
t
w(CKH)
CLK
50%
CLK
V
IH
V
IL
50%
t
w(CKL)
t
SU
t
h
V
IH
V
IL
V
IL
t
d
DATA
OUTPUT
50%
V
OH
V
OL
DATA
IN
Figure 1:
Input Timing Voltage Waveforms
V
IH
V
IL
t
DLH
or t
DHL
HV
OUTPUT
90%
10%
V
OH
V
OL
HV
OUTPUT
STR
t
DLH
Figure 2
V
IH
50%
t
DHL
90%
10%
t
THL
V
IL
V
OH
V
OL
LE
50%
Figure 3
Note:
For testing purposes, all input pulses have maximum rise and fall times of 30 nsec.
Figure 4:
Switching-Time Voltage Waveforms
Supertex inc.
1235 Bordeaux Drive, Sunnyvale, CA 94089
4
Tel: 408-222-8888
www.supertex.com
HV518
Truth Tables
Input
Data In
H
L
X
* Previous state.
Output
CLK
Data Out
H
L
No Change
*
Data In
X
H
L
X
* Previous state.
LE
X
H
H
L
STR
H
L
L
L
HV Outputs
All Low
High
Low
*
Typical Operating Sequence
CLK
DATA
IN
VALID
IRRELEVANT
SR
CONTENTS
INVALID
VALID
LE
LATCH
CONTENTS
PREVIOUSLY STORED DATA
NEW DATA VALID
STR
HV
OUTPUT
VALID
Supertex inc.
1235 Bordeaux Drive, Sunnyvale, CA 94089
5
Tel: 408-222-8888
www.supertex.com
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
