Datasheet

MAX814/MAX815/MAX816
±1% Accuracy, Low-Power, +3V and +5V
µP Supervisory Circuits
4 _______________________________________________________________________________________
ELECTRICAL CHARACTERISTICS, +3V Parts (MAX814/MAX815T, MAX816) (continued)
(V
CC
= 3.06V to 5.5V for MAX814T/MAX815T and MAX816, T
A
= T
MIN
to T
MAX
, unless otherwise noted.)
V
CC
rising
V
CC
falling, MAX814TE
V
CC
falling, MAX814TC
MAX815T (Note 1)
WDI = V
CC
or 0V, MAX815T
V
RT
(max) < V
CC
<
3.6V; MAX815T
MAX815T
Low
CONDITIONS
3.163
MR
Input Threshold
mV
48 73
∆V
LL
LOW LINE to RESET Differential
Threshold
50 70
V
MR
HI
High
µs1t
WDO
MR to WDO High Delay
µA-1.0 +1.0I
WDI
WDI Input Current
V
0.7 x V
CC
0.8
0.7 x V
CC
V
100
t
WP
WDI Pulse Width
High
MR to RESET Out Delay
(Note 3)
t
MD
V
RT
(max) < V
CC
< 3.6V 750
PFI Input Threshold V
PFI
V
CC
= 3.3V, 5V 1.666 1.700 1.734 V
PFI Input Current I
PFI
UNITSMIN TYP MAXSYMBOLPARAMETER
V
LLT
V
MR Pullup Current I
MR
MR = 0V
70 240
µA
MR Pulse Width t
MR
V
RT
(max) < V
CC
< 3.6V 500
ns
V
MRLO
Low 1.1
-15.00 +6.0 +35.00 nA
LOW LINE Threshold
504.5V < V
CC
< 5.5V
V
RT
(max) < V
CC
< 3.6V
V
CC
= 5.0V; MAX815T
Low
2.4
V
WDI
WDI Input Threshold
0.8
High
110 370
4.5V < V
CC
< 5.5V 150
4.5V < V
CC
< 5.5V 250
ns
V
RT
(max) < V
CC
< 3.6V
4.5V < V
CC
< 5.5V
Note 1: Applies if WDO is externally connected to MR or if MR is externally driven.
Note 2: On power-up, delay from reset trip threshold crossing to valid outputs.
Note 3: Applies to both RESET
and RESET.
ns