HI-8050/51, HI-8150/51

CMOS HIGH VOLTAGE DISPLAY DRIVER

GENERAL DESCRIPTION

The HI-8050, HI-8051, HI-8150 and HI-8151 are CMOS

integrated circuits designed for high voltage LCD display

drive applications. The HI-8050 & HI-8051 have TTL logic

inputs whereas the HI-8150 & HI-8151 have CMOS logic

inputs. They drive up to 38 segments at voltages between

+5 and -30 volts. The optional voltage converter on the

HI-8050 & HI-8150 can be used to generate the negative

display drive voltage.

All products have test inputs to

facilitate opens and shorts testing as well as automatic

blanking of the display if the +5V power is lost.

The HI-8050 and HI-8150 are designed to replace the

HI-8010 and HI-8020 devices in all 5 volt applications. They

offer significantly enhanced ESD protection along with a

considerably faster serial input data rate.

The data is serially clocked into the device on the negative

edge of the clock and latched in parallel to the segment

outputs on the high to low transition of the load input. Serial

output data changes on the positive edge of the clock

allowing the cascading of multiple drivers for larger dis-

plays.

The device layout supports all previous pinouts of the

HI-8010/HI-8020 products.

In addition, new technology

and features afford new packaging options. Consult your

Holt Sales Representative to explore the possibilities.

!

!

Dichroic Liquid Crystal Displays

Standard Liquid Crystal Displays

!

!

5 Volt Serial Data to Parallel High Voltage

MEMS Drivers

APPLICATIONS

!

!

!

!

!

!

!

!

!

4 MHz serial input data rate

38 segment outputs

Cascadable

5 Volt inputs translated to 35 Volts

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

alternating

Monitors 5 volt supply and forces all

segments to "OFF" condition if lost

Negative voltage converter available on-chip

CMOS low power

Military processing available

FEATURES

FUNCTIONAL BLOCK DIAGRAM

Oscillator

Divider

Volt age

Tr anslator

High Volt age

Buf f er

38 St age

Shif t R egister

38 Bit L atch

Volt age

Tr anslators

High Volt age

Drivers

DIN

LD

BPIN

BPOSC

Þ

Þ

Þ

Þ

Þ

Þ

CL

CS

8020OPT

Þ

DATA IN

CLK

LE

Þ

DOUT38

DOUT32

DOUT30

CONTROL

LOGIC

February 2003

BPIN

BPOSC

VDD

N/C

CONVOSC

CONVOUT

VEE

S37

S38

S1

S2

S3

S4

S5

S6

S7

S27

S26

S25

S24

S23

S22

S21

S20

DOUT38

DOUT32

DOUT30

T2

T1

N/C

BPOUT

N/C

HI-8050PQI

HI-8150PQI

HI-8050PQT

&

HI-8150PQT

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

48

47

46

45

44

43

42

41

40

39

38

37

36

35

34

64 Pin plastic PQFP

(See page 6 for HI-8051 & HI-8151pin configurations)

HOLT INTEGRATED CIRCUITS

www.holtic.com

(DS8050 Rev. D)

02/03