HV7022

DS20005428A-page 8

 2016 Microchip Technology Inc.

3.0

FUNCTIONAL DESCRIPTION

Table 3-1 provides functional information about HV7022.

Note 1: H = logic high level, L = logic low level, X = irrelevant, ↓ = high-to-low transition

* = dependent on previous state and whether an O/P or S/R command occurred.

FIGURE 3-1:

FIGURE 3-2:

Input and Output Equivalent Circuits

TABLE 3-1:

FUNCTIONAL TABLE CLK

I/O

Relations

Inputs

Outputs

CLK

DIR

DATA

POL

OE

Shift Reg

DATA OUT

O/P HIGH

X

X

H

H

H

*

H

*

O/P OFF

X

X

L

H

H

*

HIGH-Z

*

O/P LOW

X

X

H

L

H

*

L

*

O/P OFF

X

X

L

L

H

*

HIGH-Z

*

O/P OFF

X

X

X

X

L

*

All O/P

HIGH-Z

*

Load S/R,

set DIR

↓

LX

X

X

Qn→Qn+1

*

↓

HX

X

X

Qn→Qn-1

*

No ↓

X

X

X

X

*

No Change

No Change

Volts

0

20

40

60

80

100

180

140

100

60

20

0

20

40

60

80

100

V

V

180

140

100

60

20

Volts (V

V

Output N-Channel Characteristics through FET

Output P-Channel Characteristics through FET

V

V

VDD

DATA

INPUT

GND

VPP

GND

HV

OUT

Logic Inputs

GND

DATA

OUT

Logic Data Output

High Voltage Outputs

VDD