Functional Block Diagram
VPP
OE
Polarity
VDD
Data In
CLK
S/R
DIR
HV7022-C
P
LT
HVOUT1
N
LT
HVOUT2
Data Out
LT
HVOUT34
GND
LT = Level Translator
Function Table
I/O
Relations
CLK
Inputs
DIR
Data
POL
O/P HIGH
O/P OFF
O/P LOW
O/P OFF
O/P OFF
Load S/R,
set DIR
X
X
X
X
X
X
X
X
X
X
↓
L
↓
H
No ↓
X
H
H
L
H
H
L
L
L
X
X
X
X
X
X
X
X
Notes:
H = logic high level, L = logic low level, X = irrelevant, ↓ = high-to-low transition,
Q1 = HVOUT 1, Qn = HVOUT(n), etc.
* = dependent on previous state and whether an O/P or S/R command occured.
Outputs
OE
Shift Reg
HV Outputs
Data Out
H
*
H
H
*
HIGH-Z
*
H
*
L
*
H
*
HIGH-Z
*
L
*
All O/P HIGH-Z
*
X
Qn →Qn+1
*
Q34
X
Qn →Qn-1
*
Q1
X
*
No Change No Change
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