HV3418
64-Channel Serial To Parallel Converter
With High Voltage Push-Pull Outputs
Ordering Information
Package Options
Device
HV3418
Recommended
Operating
V
PP
Max
180V
80-Lead
Quad Cerpak
Gullwing
HV3418DG
80-Lead
Quad Plastic
Gullwing
HV3418PG
Die
HV3418X
Features
❏
HVCMOS
®
technology
❏
Output voltages up to 180V
❏
Low power level shifting
❏
Shift register speed: 6MHz @ V
DD
= 5V
12MHz @ V
DD
= 12V
❏
Latched data outputs
❏
Output polarity and blanking
❏
CMOS compatible inputs
❏
Forward and reverse shifting options
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
IOA
is Data-In and D
IOB
is Data-Out;
data is shifted from HV
OUT
64 to HV
OUT
1. When DIR is at logic high,
D
IOB
is Data-In and D
IOA
is Data-Out: data is then shifted from
HV
OUT
1 to HV
OUT
64. Data is shifted through the shift register on
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.
Absolute Maximum Ratings
1
Supply voltage, V
DD
Supply voltage, V
PP
Logic input levels
Ground current
2
High voltage supply current
2
Continuous total power dissipation
3
Ceramic
Plastic
Operating temperature range
Storage temperature range
-0.5V to +15V
V
DD
to +200V
-0.5V to V
DD
+0.5V
1.5A
1.3A
1900mW
1200mW
Ceramic -55°C to +125°C
Plastic -40°C to +85°C
-65°C to +150°C
Notes:
1. All voltages are referenced to GND.
2. Connection to all power and ground pads is required. Duty cycle is limited by
the total power dissipated in the package.
3. For operation above 25°C ambient derate linearly to maximum operating
temperature at 20mW/°C for plastic and at 31.7mW/°C for ceramic.
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
1
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.
HV3418
Electrical Characteristics
(over recommended operating conditions unless noted)
DC Characteristics
Symbol
I
DD
I
DDQ
I
PP
I
IH
I
IL
V
OH
V
OL
V
OC
Parameter
V
DD
Supply Current
Quiescent V
DD
Supply Current
High Voltage Supply Current
Min
Typ
Max
25
Units
mA
Conditions
f
CLK
= 12MHz, f
DATA
= 12MHz
LE = LOW
200
0.50
0.50
High-Level Logic Input Current
Low-Level Logic Input Current
High-Level Output
HV
OUT
Data Out
Low-Level Output
HV
OUT
Data Out
HV
OUT
Clamp Voltage
155
V
DD
-1V
25
1.0
V
PP
+1.5
-1.5
10
-10
µA
mA
mA
µA
µA
V
V
V
V
V
V
All V
IN
= 0V or V
DD
V
PP
= 180V All outputs high
V
PP
= 180V All outputs low
V
IH
= V
DD
V
IL
= 0V
V
PP
= 180V, IHV
OUT
= -5mA
ID
OUT
= -100µA
V
PP
= 180V, IHV
OUT
= +5mA
ID
OUT
= +100µA
I
OL
= +5mA
I
OL
= -5mA
AC Characteristics
1,2
(For V
DD
= 12V: values in parentheses are for V
DD
= 5V; V
PP
= 180V, T
A
= 25°C)
Symbol
f
CLK
t
W
t
SU
t
H
t
WLE
t
DLE
t
SLE
t
ON
, t
OFF
t
DHL
t
DLH
t
r
, t
f
Clock Frequency
Clock Width High and Low
High
40(83)
25(35)
10(30)
62(80)
25(35)
30(40)
1(1.5)
50(110)
75(160)
5
Parameter
Min
Typ
Max
12(6)
Units
MHz
ns
ns
ns
ns
ns
ns
µs
ns
ns
ns
C
L
= 20pF
C
L
= 20pF
C
L
= 20pF
Conditions
Data Setup Time Before Clock Rises
Data Hold Time After Clock Rises
Width of Latch Enable Pulse
LE Delay Time Rising Edge of Clock
LE Setup Time Before Rising Edge of Clock
Time from Latch Enable to HV
OUT
Delay Time Clock to Data High to Low
Delay Time Clock to Data Low to High
All Logic Inputs
Notes:
1. Shift register speed can be as low as DC as long as Data Set-up and Hold Time meet the spec.
2. AC Characteristics are guaranteed only under V
DD
= 12V and V
DD
= 5V.
Recommended Operating Conditions
Symbol
V
DD
V
PP
V
IH
V
IL
T
A
Logic supply voltage
Parameter
V
DD
= 5V
V
DD
=12V
High voltage supply
High-level input voltage
Low-level input voltage
Operating free-air temperature
Plastic
Ceramic
Notes:
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.
Power-down sequence should be the reverse of the above.
Min
4.5
10.8
60
V
DD
-0.9
0
-40
-55
Typ
5.0
12.0
Max
5.5
13.2
180
V
DD
0.9
+85
+125
Units
V
V
V
V
V
°C
4. Apply V
PP
.
5. The V
PP
should not drop below V
DD
or float during operation.
2
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
