Datasheet

MAX6730–MAX6735
Single-/Dual-/Triple-Voltage µP Supervisory
Circuits with Independent Watchdog Output
3
Maxim Integrated
ELECTRICAL CHARACTERISTICS (continued)
(V
CC
1 = V
CC
2 = +0.8V to +5.5V, T
A
= -40°C to +85°C, unless otherwise noted. Typical values are at T
A
= +25°C.) (Note 2)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
T (falling) 3.000 3.075 3.150
S (falling) 2.850 2.925 3.000
R (falling) 2.550 2.625 2.700
Z (falling) 2.250 2.313 2.375
Y (falling) 2.125 2.188 2.250
W (falling) 1.620 1.665 1.710
V (falling) 1.530 1.575 1.620
I (falling) 1.350 1.388 1.425
H (falling) 1.275 1.313 1.350
G (falling) 1.080 1.110 1.140
F (falling) 1.020 1.050 1.080
E (falling) 0.810 0.833 0.855
V
CC
2 Reset Threshold V
TH
2
D (falling) 0.765 0.788 0.810
V
Reset Threshold Tempco 20 ppm/
o
C
Reset Threshold Hysteresis V
HYST
Referenced to V
TH
typical 0.5 %
V
CC
_ to RST Output Delay t
RD
V
CC
1 = (V
TH
1 + 100mV) to
(V
TH
1 - 100mV) or
V
CC
2 = (V
TH
2 + 75mV) to
(V
TH
2 - 75mV)
45 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 (MAX6734/MAX6735)
RSTIN Input Threshold V
RSTIN
611 626.5 642 mV
RSTIN Input Current I
RSTIN
-25 +25 nA
RSTIN Hysteresis 3 mV
RSTIN to Reset Output Delay t
RSTIND
V
RSTIN
to (V
RSTIN
- 30mV) 22 μs
MANUAL RESET INPUT (MAX6730/MAX6731/MAX6734/MAX6735)
V
IL
0.3  V
CC
1
MR Input Threshold
V
IH
0.7  V
CC
1
V
MR Minimum Pulse Width 1 μs
MR Glitch Rejection 100 ns
MR to Reset Output Delay t
MR
200 ns
MR Pullup Resistance 25 50 80 k