Datasheet

(V
CC1
= 0.8V to 5.5V, V
CC2
= 0.8V to 5.5V, GND = 0V, T
A
= -40°C to +125°C, unless otherwise noted. Typical values are at T
A
=
+25°C.) (Note 1)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Reset Threshold Tempco ΔV
TH
/°C 20 ppm/°C
Reset Threshold Hysteresis V
HYST
Referenced to V
TH
typical 0.5 %
V
CC
to Reset Output Delay t
RD
V
CC1
= (V
TH1
+ 100mV) to (V
TH1
- 100mV) or
V
CC2
= (V
TH2
+ 75mV) to (V
TH2
- 75mV)
20 µs
Reset Timeout Period t
RP
D1 1.1 1.65 2.2
ms
D2 8.8 13.2 17.6
D7 (MAX6797A only) 17.5 26.25 35
D8 (MAX6797A only) 35 52.5 70
D3 140 210 280
D5 280 420 560
D6 560 840 1120
D4 1120 1680 2240
ADJUSTABLE RESET COMPARATOR INPUT (MAX6719A/MAX6720A/MAX6723A–MAX6727A)
RSTIN Input Threshold V
RSTIN
611 626.5 642 mV
RSTIN Input Current I
RSTIN
-100 +100 nA
RSTIN Hysteresis 3 mV
RSTIN to Reset Output Delay t
RSTIND
V
RSTIN
to (V
RSTIN
- 30mV) 22 µs
POWER-FAIL INPUT (MAX6728A/MAX6729A)
PFI Input Threshold V
PFI
611 626.5 642 mV
PFI Input Current I
PFI
-100 +100 nA
PFI Hysteresis V
PFH
3 mV
PFI to PFO Delay t
DPF
(V
PFI
+ 30mV) to (V
PFI
- 30mV) 2 µs
MANUAL-RESET INPUT (MAX6715A–MAX6722A/MAX6725A–MAX6729A)
MR Input Voltage
V
IL
0.3 x V
CC1
V
V
IH
0.7 x V
CC1
MR Minimum Pulse Width 1 µs
MR Glitch Rejection 100 ns
MR to Reset Delay t
MR
200 ns
MR Pullup Resistance 25 50 80 kΩ
WATCHDOG INPUT (MAX6721A–MAX6729A)
Watchdog Timeout Period t
WD
First watchdog period after reset timeout
period
35 54 72
s
Normal mode 1.12 1.68 2.24
WDI Pulse Width t
WDI
(Note 2) 50 ns
WDI Input Voltage
V
IL
0.3 x V
CC1
V
V
IH
0.7 x V
CC1
WDI Input Current I
WDI
V
WDI
= 0V or V
CC1
-1 +1 µA
MAX6715A–MAX6729A/
MAX6797A
Dual/Triple, Ultra-Low-Voltage, SOT23 μP
Supervisory Circuits
www.maximintegrated.com
Maxim Integrated │ 3
Electrical Characteristics (continued)