HV514
HV514
8-Channel Serial to Parallel Converter
with High Voltage Push-Pull Outputs
Features
❏
HVCMOS‚ technology
❏
Operating output voltage of 250V
❏
Low power level shifting from 5V to 250V
❏
Shift clock speed 8MHz @ V
DD
=5V
❏
8 latch data outputs
❏
Output blanking
❏
CMOS compatible inputs
❏
Programmable POL latch
General Description
The HV514 is a low voltage serial to high voltage parallel
converter with 8 high voltage push-pull outputs. This device has
been designed to drive small capacitve loads such as piezoelec-
tric transducers. It can also be used in any application requiring
multiple high voltage outputs, medium current sourcing and
sinking capabilities.
The device consists of an 8-bit shift register, dual 8-bit latches,
and control logic to latch data, and control blanking of the
outputs. Data is shifted through the shift register on the rising
transition of the clock. A data output buffer is provided for
cascading devices. Operation of the shift register is not affected
by the /LE, SEL, or the /BL inputs. Transfer of data from the shift
register to the latch occurs when the /LE is high. Shift register
data is shifted to the 8-bit Data Latch when SEL is high; and shift
register data is shifted to the 8-bit Polarity Latch when SEL is low.
The data is held in the output latches whenever /LE is low.
The high voltage output state is primarily dependent on the value
in the polarity latch. If the blank, /BL, is low, the output condition
is the result of a 1 being exclusively-NOR’ed with the polarity
latch value. If /BL is high, the output condition is the result of the
data latch being exclusively-NOR’ed with the polarity latch.
All outputs with have a break-before-make circuitry to reduce
cross-over current during output state changes.
Applications
❏
Piezoelectric transducer driver
❏
Weaving applications
❏
Braille
❏
Printers
❏
MEMs
❏
Displays
Top Block Diagram
V
DD
V
PP
Note: /LE, SEL, and /BL have internal 20k-ohm pull-up resistors.
8-bit shift register
Level translator
Output control
2 x 8-bit latch
D
IN
CLK
D
OUT
HV
OUT
1
8
8
8
•
•
•
•
•
•
HV
OUT
8
GND
LE*
BL*
SEL
01/19/04
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
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.
1
HV514
DC Electrical Characteristics
(Over operating supply voltages unless otherwise noted)
Symbol
I
DD
I
DDQ
I
PP
I
PPQ
I
IH
I
I L
I
DPP
V
OH
V
OL
Parameter
V
DD
supply current
Quiescent V
DD
supply current
V
PP
supply current
Quiescent V
PP
supply current
High-level logic input current
Low-level logic input current
Dynamic I
PP
High-level output
Low-level output
H
VOUT
Data out
H
VOUT
Data out
140
V
DD
-1V
60
1.0
Min
Ty p
Max
4
0.1
2 .0
10 0
10 0
10
-1 0
-3 5 0
0 .1
Units
mA
mA
µA
µA
µA
µA
mA
V
V
All V
IN
=V
DD
All V
IN=
0V
V
PP
=250V, f
OUT
=300Hz, no load
V
PP
=240V, outputs static
V
IH
=V
DD
V
IL
=0V
V
IL
=0V, for inputs w/pull-up resistors
f
OUT
=100kHz, no load
V
PP
=200V, I
HVOUT
=-20mA
I
DOUT
=-0.1mA
V
DD
=4.5V, I
HVOUT
=20mA
I
DOUT
=0.1mA
Conditions
f
CLK
=8MHz, LE*=LOW
AC Electrical Characteristics
(Over operating supply voltages unless otherwise noted)
Symbol
f
CLK
f
OUT
t
W
t
SU
t
H
t
WLE
t
DLE
t
SLE
t
OR
, t
OF
t
d ON/OFF
t
DHL
t
DLH
T
R
, t
F
Clock frequency
Output switching frequency (SOA limited)
Clock width high and low
Data setup time before clock rises
Data hold time after clock rises
Width of latch enable pulse
/LE delay time after rising edge of clock
/LE setup time before rising edge of clock
Rise/fall time of HV
OUT
Delay time for output to start rise/fall
Delay time clock to D
OUT
high to low
Delay time clock to D
OUT
low to high
All logic inputs
62
15
30
80
35
40
1000
500
110
110
5
Parameter
Min
0
300
Ty p
Max
8
Units
MH z
Hz
ns
ns
ns
ns
ns
ns
µs
ns
ns
ns
ns
C
L
=15pF
C
L
=15pF
C
L
=100nF, V
PP
=200V
C
L
=50nF, V
PP
=200V
Conditions
Absolute Maximum Ratings*
Supply Voltage, V
DD
Supply Voltage, V
PP
Logic input levels
Ground current
High voltage supply current
Continuous total power dissipation
Operating temperature range
Storage temperature range
* All voltages are referenced to device ground.
Ordering Information
Device
HV514
Part Number
HV514WG
Package
20 Lead SOW
Die
HV514X
275V
-0.5V to 6V
-0.5V to V
DD
+0.5V
0.3A
0.25A
750mW
-40?C to +85?C
-65?C +150?C
2
HV514
Operating Supply Voltages
Symbol
V
DD
V
PP
V
IH
V
IL
T
A
Notes:
1. Below minimum V
PP
the output may not switch.
2. Power-up sequence should be the following:
1. Connect ground.
2. Apply V
DD
.
3. Set all inputs (Data, CLK, Enable, etc.) to a known state.
4. Apply V
PP
.
Power-down sequence should be the reverse of the above.
Parameter
Logic supply voltage
High voltage supply
High-level input voltage
Low-level input voltage
Operating free-air temperature
Min
4.5
50
V
DD
-0.9
0
-40
Typ
5.0
Max
5.5
250
V
DD
0.9
+85
Units
V
V
V
V
°C
Note 1
Conditions
Input and Output Equivalent Circuits
V
DD
V
DD
V
PP
20kΩ
*
Data Out
HV
OUT
Input
GND
Logic Inputs
GND
Logic Data Output
HV
GND
High Voltage Outputs
*
BL, SEL, LE
Note: There is an internal output resistor for the high voltage output pin for SOA protection
3
Microcontroller MCU
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