BSO
-O
Ordering Information
Package Option
Device
HV62208
64-Lead 3-Sided Plastic Gullwing
HV62208PG
E -
HV62208
LET
32-Channel 256 Gray-Shade High Voltage Driver
Die
HV62208X
Features
❏
❏
❏
❏
❏
❏
❏
❏
❏
❏
❏
HVCMOS
®
technology
5V CMOS inputs
Up to 80V output voltage
PWM gray shade conversion
Capable of 256 levels of gray shading
Balanced shift clock complies with RS-422
8MHz shift and count clock frequency
16MHz data throughput rate
8 bit data bus
32 outputs per device
BLANK function
General Description
Not recommended for new designs. Please use HV632 instead.
The HV622 is a 32-channel gray-shade column driver IC de-
signed for driving electrofluorescent displays. Using Supertex’s
unique HVCMOS
®
technology, it is capable of 256 levels of gray
shading by PWM conversion.
The shift clock is a balanced clock with electrical characteristics
complying with EIA RS-422 standard. Input data, in groups of
eight, is latched into a set of data latches on both edges of the shift
clock. The data shifted in the first data latch corresponds to
HV
OUT
1, the second data latch corresponds to HV
OUT
2, and so on.
These data are compared to the contents of the master binary
counter which counts on both edges of the count clock. Each time
the master counter begins to decrement from 1111 1111, the data
in the data latches are compared with the contents of the counter;
if they match, the corresponding outputs will go high. The master
counter counts down to 0000 0001 and then starts to count up
again. The outputs that are at high will stay at high until the
contents of the counter match the data in the data latches again.
Therefore, the higher the binary data in the data latches, the
longer the outputs will stay at high. Thus, different high voltage
pulse widths are produced. When the counter reaches its
1111 1111 count while counting up, the device is ready for the
next operation cycle. A data value of 0000 0000 produces no
pulse; the output stays low.
The BLANK input signal will reset the master counter to all ones
(1111 1111) and set all high voltage outputs to low.
Absolute Maximum Ratings
Supply voltage, V
DD
Supply voltage, V
PP
Supply voltage, V
NN
Logic input levels
Continuous total power dissipation
Operating temperature range
Storage temperature range
-0.5V to +7.5V
-0.5V to +80V
-15V to 0V
-0.5 to V
DD
+ 0.5V
1.2W
-40°C to +85°C
-65°C to +150°C
Notes:
All voltages are referenced to GND.
Maximum V
PP
to V
NN
voltage is 90V.
For operation above 25°C ambient derate linearly to 85°C at 20mW/°C.
02/96/022
Supertex Inc. does not recommend the use of its products in life support applications and will not knowingly sell its products for use in such applications unless it receives an adequate "products liability
indemnification insurance agreement." Supertex does not assume responsibility for use of devices described and limits its liability to the replacement of devices determined to be defective due to
workmanship. No responsibility is assumed for possible omissions or inaccuracies. Circuitry and specifications are subject to change without notice. For the latest product specifications, refer to the
1
Supertex website: http://www.supertex.com. For complete liability information on all Supertex products, refer to the most current databook or to the Legal/Disclaimer page on the Supertex website.
HV62208
Electrical Characteristics
(Over recommended conditions of V
DD
= 5V, V
PP
= 70V, V
NN
= -10V, T
A
= 25°C unless otherwise noted)
Low-Voltage DC Characteristics (Digital)
Symbol
V
DD
I
DD
I
DDQ
I
IH
I
IL
I
OH
I
OL
Parameter
Low-voltage digital supply voltage
V
DD
supply current
Quiescent V
DD
supply current
High-level input current
Low-level input current
High-level output current
Low-level ouptut current
-1.0
1.0
Min
4.5
Max
5.5
25
100
10
-10
Units
V
mA
µA
µA
µA
mA
mA
f
SC
= 8MHz, f
CC
= 8MHz
All V
IN
= GND, Count Clock = V
DD
V
IN
= V
DD
V
IL
= GND
Conditions
Low-Voltage DC Characteristics (Analog)
Symbol
V
DD
I
DD
I
DDQ
Parameter
Low-voltage analog supply voltage
V
DD
supply current
Quiescent V
DD
supply current
SO
- OB
Min
4.5
Max
5.5
100
100
Min
Max
100
-4.0
4.0
E-
ET
L
Conditions
V
f
SC
= 8MHz, f
CC
= 8MHz
All V
IN
= GND, Count Clock = V
DD
Units
µA
µA
High-Voltage DC Characteristics
Symbol
I
PPQ
I
OUT(p)
I
OUT(n)
Parameter
Quiescent V
PP
supply current
P-channel output current
N-channel output current
Units
µA
mA
mA
Conditions
All HV
OUT
low or high
AC Characteristics
Symbol
f
SC
f
CC
f
DIN
t
CW
t
CSS
t
CSH
t
SCC
t
DSS
t
DSH
t
DW
t
LCW
t
CCW
t
CCC
t
LCD
t
CCD
t
BLW
t
BLD
t
CDD
Parameter
Shift clock frequency
Count clock frequency
Data In frequency
Chip select pulse width
Chip select to shift clock set-up time
Chip select to shift clock hold time
Shift clock cycle time
Data to shift clock set-up time
Data to shift clock hold time
Data In pulse width
Load count pulse width
Count clock pulse width
Count clock cycle time
Load count to count clock delay
Count clock to HV
OUT
turn-on/turn-off
BLANK pulse width
BLANK to HV
OUT
delay
Count clock delay between count down and
count up cycles
500
700
500
80
15
45
125
10
52
62
75
62.5
125
100
600
Min
Max
8.0
8.0
16
Units
MHz
MHz
MHz
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
C
L
= 15pF
C
L
= 15pF
Conditions
2
HV62208
Recommended Operating Conditions
Symbol
V
DD
V
PP
V
NN
V
IL
V
IH
f
SC
f
CC
T
A
Parameter
Logic supply voltage
Positive high-voltage supply
Negative high-voltage supply
Low-level input voltage
High-level input voltage
Shift clock frequency
Count clock frequency
Operating temperature
-40
Min
4.5
12
-8
0
V
DD
–1
Max
5.5
70
-10
1
V
DD
8
8
+85
Units
V
V
V
V
V
MHz
MHz
Conditions
Pin Definitions
Pin #
27-30
36-29
34
35
31
24
25
33
26
4-19
46-61
23,43
41
40
22,44
20-21
42
Name
D1 – D8
Shift Clock
Shift Clock
Count Clock
CSI
CSO
Load Count
Blank
HV
OUT
1 – HV
OUT
32
V
PP
V
DD
(Analog)
V
DD
(Digital)
V
NN
GND (Digital)
GND (Analog)
I/O
I
I
I
I
I
O
I
I
O
—
—
—
—
—
Function
Inputs for binary-format parallel data
(D8 is the most significant bit)
Triggers data on both edges
Triggers data on both edges
Input to the counter
BSO
-O
E-
LET
°C
Chip select input to enable the device to accept data
Chip select output to enable the next device
Input to initiate the counting
Input to reset the counter and HV
OUT
High-voltage outputs
Positive high-voltage supply
Low-voltage analog supply voltage
Low-voltage digital supply voltage
Negative high-voltage supply
Digital ground
Analog ground
Input and Output Equivalent Circuits
V
DD
V
DD
V
PP
Input
Data Out
HV
OUT
GND
Logic Inputs
GND
Logic Data Output
V
NN
High Voltage Output
3
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