HI-8020 Datasheet, PDF (1/6 Pages) Holt Integrated Circuits – CMOS HIGH VOLTAGE DISPLAY DRIVER

January 2001
HI-8020/HI-8120
GENERAL DESCRIPTION
PIN CONFIGURATION (Top View)
The HI-8020 & HI-8120 high voltage display drivers
are functional replacements for the AMI S5420 and
Micrel MIC8013/8014 series. These CMOS prod-
ucts are designed to drive liquid crystal displays by
converting 5 volt serial data to parallel segment and
backplane waveforms with amplitudes up to 30 volts.
The HI-8020 & HI-8120 differ from the HI-8010 by
only the shift register clock and chip select gating
logic. The HI-8020 has TTL logic inputs whereas the
HI-8120 has CMOS logic inputs.
Both devices can drive up to 38 segments and have 3
possible shift register data taps to provide options to
cascade devices for larger displays. Data is clocked
into a 38 stage shift register and parallel latched
before the output translators by a Load input.
The HI-8020 & HI-8120 are available in a variety of
ceramic and plastic packaging including DIP; leaded
and leadless chip carriers; and J-lead and gull-wing
quad flat packs.
FEATURES
! 5 volt input translated to 30 volts or less
! Pin-out adaptable to drive 30, 32 or 38
LCD segments
! RC oscillator or high voltage (BP) clock input
! TTL compatible inputs (HI-8020 only)
! CMOS compatible inputs (HI-8120 only)
! Low power consumption
! Industrial (-40°C to +85°C) & Military (-55°C
to +125°C) temperature ranges
! Pin for pin compatible with the Micrel
MIC8010/8011 series and the AMI S4520
series drivers
! Cascadable
! Military level processing available
! Dichroic Liquid Crystal Displays
! Standard Liquid Crystal Displays
! Vacuum Fluorescent Displays
S27 ⁷
S28 ⁸
S29 ⁹
S30 ¹⁰
S31 ¹¹
S32 12
N/C 13
VSS 14
CS 15
CL 16
LD 17
HI-8020J-85
&
HI-8120J-85
44 - PIN
PLASTIC
PLCC
39 _S17
38 _S16
37 _S15
36 _VEE
35 _S14
34 S13
33 S12
32 S11
31 S10
30 S9
29 S8
(See page 3-6 for additional package pin configurations)
FUNCTIONAL BLOCK DIAGRAM
DIN
CL
ÞÞ
CS Þ
LD Þ
LCDØ Þ
LCDØ OPT Þ
Oscillator
Divider
Voltage
Translator
High Voltage
Buffer
Þ BP
DATA IN
38 Stage
Shift Register
CLK
Þ ^{DOUT 38}
Þ ^{DOUT 32}
Þ ^{DOUT 30}
38 Bit Latch
Voltage
Translators
High Voltage
Drivers
SEGMENTS
(DS8020 Rev. B)
HOLT INTEGRATED CIRCUITS
3-9
01/01