HV3922
Recommended Operating Conditions
Symbol
V
CC
V
IN
V
LL
V
PP
IP
D(N)
H
T
A
CL
Notes:
1.V
PP
rise time (dv/dt) should be less than 50V/µS.
2.Power-up sequence should be the following:
A)
B)
C)
D)
E)
Connect ground;
Apply V
CC
;
Apply V
LL
;
Apply V
PP
;
Set all inputs to a known state. Power-down sequence should be the reverse of the above.
Parameter
Logic Supply Voltage
DC Logic Input Voltage
V
LL
Supply Voltage
V
PP
Supply Voltage
High-State Continuous P
D(N)
Source Current
Ambient Operating Temp
D
RV(N)
Load Capacitance
Min
4.5
0
-3.5
200
Max
5.5
V
CC
-2.5
220
1.7
Units
V
V
V
V
mA
°C
µF
-55
0
+125
0.006
Function Table
Input
CS
H
X
L
L
L
L
H
ENA
X
H
L
L
L
L
X
OE
H
H
H
H
H>L
H>L
H>L
Data
D
(N)
X
X
H
L
H
L
X
P/F
P/F
X
H
H>L
X
Pass
Pass
X
(At Power Up)
X
X
V
IH
X
P/F
Set
VDH
VDL
VFH
X
H
X
Fail
V
TH
Level
2
Pass
Pass
Pass
Pass
P/F
P/F
Internal
Latch Q(N)
Previous State
Previous State
Set
Reset
Set
Reset
Previous State
Set
Reset
Previous State
Set
Reset
—
VDH
HI-Z
HI-Z
VDL
VDH
VDL
VFH
VFH
VFL
VDH
HI-Z
VDL
VDH
VFH
VFH
P
D(N)
Previous State
Previous State
Previous State
Previous State
VDH
HI-Z
Output
D
RV(N)
Previous State
Previous State
Previous State
Previous State
VDL
VDH
Fault
VFH
VFH
VFH
VFH
VFH
VFH
Notes:
1. X indicates “Don’t Care” input state (L or H).
2. The output threshold is internally tested for each P
D(N)
output; the pass condition occurs when OE = H and:
A) P
D(N)
driving high with output > V
TH (MAX)
, or may occurs if P
D(N)
driving high and output > V
TH (MIN)
and < V
TL (MAX)
.
OR
B) P
D(N)
driving Low with output < V
TH (MIN)
, or may occur if P
D(N)
driving low and output < V
TH (MAX)
and < V
TL (MIN)
.
The fail condition occurs when OE = H and conditions for “pass” are not satisfied.
3. Fault output = V
FL
indicates a fault has been detected in at least one of the P
D(N)
output loads when OE = H. All other outputs shall function normally when a fault
condition has been detected for one of the outputs. The Fault output shall remain in the low state, regardless of the state of the output which initiated the fault status, until
the next falling edge of OE. Whenever OE = L, the Fault output is forced to V
FH
, and the fault latch is reset. If the fault condition persists, the fault response repeats each
time the OE input is set to H.
4. H>L indicates falling edge (H to L).
5. HI-Z indicates no current is sourced to output P
D(N)
.
6. P/F indicates “Pass” or “Fail” fault threshold conditions.
3
SUPERTEX [ Supertex, Inc ]
