Datasheet

MAX6715–MAX6729
Dual/Triple Ultra-Low-Voltage SOT23 µP
Supervisory Circuits
_______________________________________________________________________________________ 3
ELECTRICAL CHARACTERISTICS (continued)
(V
CC
1 = V
CC
2 = 0.8V to 5.5V, GND = 0, T
A
= -40°C to +85°C, unless otherwise noted. Typical values are at T
A
= +25°C.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX
UNITS
V
CC
to Reset Output Delay t
RD
V
C C
1 = ( V
TH
1 + 100m V ) to ( V
TH
1 - 100m V ) or
V
C C
2 = ( V
TH
2 + 75m V ) to ( V
TH
2 - 75m V )
20 µs
D1 1.1
1.65
2.2
D2 8.8
13.2 17.6
D3
140 210 280
D5
280 420 560
D6
560 840 1120
Reset Timeout Period t
RP
D4
1120 1680 2240
ms
ADJUSTABLE RESET COMPARATOR INPUT (MAX6719/MAX6720/MAX6723–MAX6727)
RSTIN Input Threshold
V
RSTIN
611 626.5 642
mV
RSTIN Input Current
I
RSTIN
-25
+25
nA
RSTIN Hysteresis 3mV
RSTIN to Reset Output Delay
t
RSTIND
V
RSTIN
to (V
RSTIN
- 30mV) 22 µs
POWER-FAIL INPUT (MAX6728/MAX6729)
PFI Input Threshold V
PFI
611 626.5 642
mV
PFI Input Current I
PFI
-25
+25
nA
PFI Hysteresis V
PFH
3mV
PFI to PFO Delay t
DPF
(V
PFI
+ 30mV) to (V
PFI
- 30mV) 2 µs
MANUAL RESET INPUT (MAX6715–MAX6722/MAX6725–MAX6729)
V
IL
0.3 ✕ V
CC
1
MR Input Voltage
V
IH
0.7 ✕ V
CC
1
V
MR Minimum Pulse Width 1µs
MR Glitch Rejection
100
ns
MR to Reset Delay t
MR
200
ns
MR Pullup Resistance 25 50 80 kΩ
WATCHDOG INPUT (MAX6721–MAX6729)
First watchdog period after reset timeout
period
35 54 72
Watchdog Timeout Period t
WD
Normal mode
1.12 1.68 2.24
s
WDI Pulse Width t
WDI
(Note 2) 50 ns
V
IL
0.3 ✕ V
CC
1
WDI Input Voltage
V
IH
0.7 ✕ V
CC
1
V
WDI Input Current I
WDI
WDI = 0 or V
CC
1-1+1µA