hv57908 Supertex, Inc., hv57908 Datasheet

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hv57908

Manufacturer Part Number
hv57908
Description
8mhz, 64-channel Serial To Parallel Converter With Push-pull Outputs
Manufacturer
Supertex, Inc.
Datasheet

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Part Number:
hv57908PG-G
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Supertex
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211
Features
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
HV57908

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hv57908 Summary of contents

Page 1

... Register DIR with Push-Pull Outputs 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 ...

Page 2

... Top Marking YY = Year Sealed Week Sealed LLL Lot Number C = Country of Origin* Bottom Marking A = Assembler ID* = “Green” Packaging CCCCCCCC AAA *May be part of top marking 80-Lead PQFP (PG) Units MHz °C HV57908 ...

Page 3

... -100µ 12mA +80V 100µA O 1.0 µ -1.0 µ 1 1.0mA ≤ 5ns [10% and 90% points Max Units Conditions 8 MHz --- - ns --- - ns --- - ns --- 500 15pF 15pF 15pF --- - ns --- - ns --- HV57908 = 8.0MHz ...

Page 4

... HVOUT w/ S/R LOW HVOUT w/ S/R HIGH VDD Data Out GND Logic Data Output Data Valid 50 DLH t DHL 50% t DLE 4 HV57908 VPP HVOUT GND High Voltage Outputs 50 90% 50% 10% 10% 50% 50% 50% 50 WLE SLE 90% 10% t OFF 90% ...

Page 5

... Pin 25 DIOA 5 Outputs Shift Reg HV Outputs inversion X - Inversion Stored Data Inversion stored data H Q → n → n-1 HVOUT33 • • • • • HVOUT63 HVOUT64 39 DIOB HV57908 Data Out - - - - - - - - - - D I/OB D I/OA ...

Page 6

... LE 49 HVOUT56/9 CLK 50 HVOUT55/ HVOUT54/11 VDD 52 HVOUT53/12 DIR 53 HVOUT52/13 GND 54 HVOUT51/14 POL 55 HVOUT50/15 N/C 56 HVOUT49/16 N/C 57 HVOUT48/17 N/C 58 HVOUT47/18 DIOB 59 HVOUT46/19 VPP 60 HVOUT45/20 6 HV57908 Pin # Function 61 HVOUT44/21 62 HVOUT43/22 63 HVOUT42/23 64 HVOUT41/24 65 HVOUT40/25 66 HVOUT39/26 67 HVOUT38/27 68 HVOUT37/28 69 HVOUT36/29 70 HVOUT35/30 71 HVOUT34/31 72 HVOUT33/32 73 HVOUT32/33 74 HVOUT31/34 75 HVOUT30/35 76 HVOUT29/36 77 HVOUT28/37 ...

Page 7

... MAX 3.40 - JEDEC Registration MO-112, Variation CB-1, Issue B, Sept.1995. Drawings not to scale. (The package drawing(s) in this data sheet may not refl ect the most current specifi cations. For the latest package outline information go to http://www.supertex.com/packaging.html.) Doc.# DSFP-HV57908 A083107 Seating ...

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