HV57908_07 SUTEX [Supertex, Inc], HV57908_07 Datasheet

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HV57908_07

Manufacturer Part Number
HV57908_07
Description
8MHz, 64-Channel Serial to Parallel Converter with Push-Pull Outputs
Manufacturer
SUTEX [Supertex, Inc]
Datasheet
1.HV57908_07.pdf (7 pages)
Features
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Functional Block Diagram
HVCMOS
5V CMS Logic
Output voltage up to +80V
Low power level shifting
8MHz data rate
Latched data outputs
Forward and reverse shifting options (DIR pin)
Diode to V
Outputs may be hot switched
®
PP
technology
allows effi cient power recovery
8MHz, 64-Channel Serial to Parallel Converter
DIOA
Clock
POL
DIR
BL
LE
Static Shift
Register
64-bit
with Push-Pull Outputs
64 Latches
DIOB
General Description
The HV57908 is a low voltage serial to high voltage
parallel converter with push-pull outputs. The device has
been designed for use as a driver for EL displays. It can
also be used in any application requiring multiple output
high voltage current sourcing and sinking capability such
as driving plasma panels, vacuum fl uorescent displays, or
large matrix LCD displays.
The device consists of a 64-bit shift register, 64 latches and
control logic to perform the polarity select and blanking of
the outputs. HVOUT1 is connected to the fi rst stage of the
fi rst shift register through the polarity and blanking logic.
Data is shifted through the shift registers on the logic low
to high transition of the clock. The DIR pin causes CCW
shifting when connected to GND, and CW shifting when
connected to VDD. A data output buffer is provided for
cascading devices. This output refl ects the current status
of the last bit of the shift register (HVOUT64). 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 registers to the latches occurs when the LE
input is high. The data in the latches is stored when the LE
is low.
VPP
HVOUT63
HVOUT64
HVOUT1
HVOUT2
60 Additional
Outputs
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HV57908

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HV57908_07 Summary of contents

Page 1

Serial to Parallel Converter Features ► HVCMOS ® technology ► 5V CMS Logic ► Output voltage up to +80V ► Low power level shifting ► 8MHz data rate ► Latched data outputs ► Forward and reverse shifting options ...

Page 2

Ordering Information Package Options Device 80-Lead PQFP HV57908 HV57908PG-G -G indicates package is RoHS compliant (‘Green’) Absolute Maximum Ratings Parameter Supply voltage Output voltage , V PP Logic input levels 1 Ground current Continuous total power dissipation Operating ...

Page 3

DC Electrical Characteristics Symbol Parameter I V supply current High voltage supply current PP I Quiescent V supply current DDQ High level output Low level output High-level ...

Page 4

Input and Output Equivalent Circuits VDD Input GND Logic Inputs Switching Waveforms Data Input 50% CLK 50% Data Out Latch Enable HVOUT w/ S/R LOW HVOUT w/ S/R HIGH VDD Data Out GND Logic Data Output Data Valid t t ...

Page 5

Function Table Function Data CLK All O/P high X X All O/P low X X O/P normal X X O/P inverted _↑ Data falls _ H _↑ through _ (latches L _↑ transparent _↑ ...

Page 6

Pin Function Pin # Pin # Function 1 HVOUT24/ HVOUT23/ HVOUT22/ HVOUT21/ HVOUT20/ HVOUT29/ HVOUT18/ HVOUT17/ HVOUT16/ HVOUT15/50 11 HVOUT14/51 31 ...

Page 7

PQFP Package Outline (PG) 20x14mm body, 0.80mm pitch E Note 1 E1 (Index Area D1/4 x E1/ Top View Note 1: A Pin 1 identifi er must be located in the index area indicated. ...

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