HI-8020/HI-8120
January 2001
GENERAL DESCRIPTION
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.
PIN CONFIGURATION
(Top View)
S27
S28
S29
S30
S31
S32
N/C
V
SS
CS
CL
LD
7
8
9
10
11
12
13
14
15
16
17
39
38
HI-8020J-85
&
HI-8120J-85
44 - PIN
PLASTIC
PLCC
37
36
35
34
33
32
31
30
29
S17
S16
S15
V
EE
S14
S13
S12
S11
S10
S9
S8
(See page 3-6 for additional package pin configurations)
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
H i g h Voltage
Buffer
FUNCTIONAL BLOCK DIAGRAM
DIN
Þ
CL
Þ
CS
Þ
LD
Þ
LCDØ OPT
Þ
LCDØ
Þ
Oscillator
Divider
Voltage
Translator
38 Bit Latch
DATA IN
38 Stage
Shift Register
CLK
Þ
DOUT 38
Þ
DOUT 32
Þ
DOUT 30
Voltage
Translators
High Voltage
Drivers
!
Dichroic Liquid Crystal Displays
!
Standard Liquid Crystal Displays
!
Vacuum Fluorescent Displays
HOLT INTEGRATED CIRCUITS
3-9
Þ
BP
SEGMENTS
(DS8020 Rev. B)
01/01
HOLTIC [ HOLT INTEGRATED CIRCUITS ]
