HI-8040QT Datasheet PDF ( Pinout ) - CMOS HIGH VOLTAGE DISPLAY DRIVER

HI-8040QT Datasheet PDF - Holt Integrated Circuits

Part Number	*HI-8040QT*
Description	CMOS HIGH VOLTAGE DISPLAY DRIVER
Manufacturers	Holt Integrated Circuits
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September 1999

HI-8040

GENERAL DESCRIPTION

The HI-8040 is a CMOS integrated circuit designed for high

voltage LCD display drive applications. It can drive 85

segments at voltages between +5 and -30 volts. An optional

negative converter can generate the negative display drive

voltage. Test inputs facilitate opens and shorts testing. The

backplane frequency is checked and, as long as power is

available, the segments are shut "Off" if the frequency

becomes too low.

The HI-8040 is part of a family of display drivers which

control segment information in the same way. Data is

serially clocked into the device and the data for all segment

outputs are latched in parallel when the Load input

transitions from high to low. With the Data Out from the shift

segment outputs. The shift register is 85 bits long.

The die is metal mask programmable to provide for various

package and/or cascade tap options. Consult your Holt

Sales representative to explore the possibilities.

APPLICATIONS

! Dichroic Liquid Crystal Displays

! Standard Liquid Crystal Displays

PIN CONFIGURATION (Top View)

S60 81

S61 82

S62 83

S63 84

S64 85

S65 86

S66 87

S67 88

S68 89

S69 90

S70 91

S71 92

S72 93

S73 94

S74 95

S75 96

S76 97

S77 98

S78 99

S79 100

100 PIN QUAD CERPACK

50 S29

49 S28

48 S27

47 S26

46 S25

45 S24

44 S23

43 S22

42 S21

41 S20

40 S19

39 S18

38 S17

37 S16

36 S15

35 S14

34 S13

33 S12

32 S11

31 S10

FEATURES

! 4 MHz serial input data rate

! 85 segment outputs

! Cascadable

! 5 Volt inputs translated to 35 Volts

! Test pins allow hardware all "ON", all "OFF" or

alternating

! Monitors backplane oscillation and forces all

segments to "OFF" condition if below 10Hz

! Negative voltage converter available on-chip

! CMOS low power

! Military processing available

See page 3-19 for magnified view

FUNCTIONAL BLOCK DIAGRAM

DIN Þ

CL Þ

CS Þ

LD Þ

BPOSC

BPIN

ÞÞ

Oscillator

Divider

Voltage

Translator

High Voltage

Buffer

Þ BP

DATA IN

85 Stage

Shift Register

CLK

DOUT

LE 8 5 B i t L a t c h

Voltage

Translators

High Voltage

Drivers

85 SEGMENTS

(DS8040 Rev. NEW)

HOLT INTEGRATED CIRCUITS

3-15

9/99

HI-8040

ORDERING INFORMATION

PART

NUMBER

PACKAGE

DESCRIPTION

HI-8040Q

100-PIN CERAMIC QUAD FLAT PACK (CQFP)

HI-8040QT

100-PIN CERAMIC QUAD FLAT PACK (CQFP)

HI-8040QM-01 100-PIN CERAMIC QUAD FLAT PACK (CQFP)

TEMPERATURE

RANGE

-40°C to +85°C

-55°C to +125°C

BURN LEAD

FLOW IN FINISH

I NO SOLDER

T NO SOLDER

M YES SOLDER

MAGNIFIED VIEW OF PIN ASSIGNMENTS