12/13/01
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.
Ordering Information
Features
❏ HVCMOS
❏ Output voltages up to 180V
❏ Low power level shifting
❏ Shift register speed: 6MHz @ V
❏ Latched data outputs
❏ Output polarity and blanking
❏ CMOS compatible inputs
❏ Forward and reverse shifting options
Absolute Maximum Ratings
Supply voltage, V
Supply voltage, V
Logic input levels
Ground current
High voltage supply current
Continuous total power dissipation
Operating temperature range
Storage temperature range
Notes:
1. All voltages are referenced to GND.
2. Connection to all power and ground pads is required. Duty cycle is limited by
3. For operation above 25°C ambient derate linearly to maximum operating
HV3418
Device
the total power dissipated in the package.
temperature at 20mW/°C for plastic and at 31.7mW/°C for ceramic.
®
Recommended
technology
2
Operating
V
DD
PP
PP
180V
Max
12MHz @ V
64-Channel Serial To Parallel Converter
2
With High Voltage Push-Pull Outputs
3
DD
DD
Ceramic
Ceramic -55°C to +125°C
= 5V
Quad Cerpak
= 12V
Plastic
Plastic
HV3418DG
Gullwing
80-Lead
-0.5V to V
-65°C to +150°C
-40°C to +85°C
-0.5V to +15V
V
DD
1
to +200V
1900mW
1200mW
DD
+0.5V
1.5A
1.3A
Package Options
Quad Plastic
HV3418PG
Gullwing
80-Lead
1
General Description
The HV34 is a low voltage serial to high voltage parallel converter
with push-pull outputs. This device has been designed for use as
a printer driver for inkjet applications. It can also be used in any
application requiring multiple output high voltage, low current
sourcing and sinking capabilities.
The device consists of a 64-bit shift register, 64 latches, and
control logic to perform the polarity select and blanking of the
outputs. A DIR pin controls the direction of data shift through the
device. With DIR grounded, D
data is shifted from HV
D
HV
the low to high transition of the clock. Data output buffers are
provided for cascading devices. Operation of the shift register is
not affected by the LE (latch enable), BL (blanking), or the POL
(polarity) inputs. Transfer of data from the shift register to the latch
occurs when the LE (latch enable) is high. The data in the latch is
stored during LE transition from high to low.
IOB
OUT
is Data-In and D
1 to HV
OUT
64. Data is shifted through the shift register on
HV3418X
OUT
IOA
Die
64 to HV
is Data-Out: data is then shifted from
IOA
is Data-In and D
OUT
1. When DIR is at logic high,
HV3418
IOB
is Data-Out;
