Datasheet

(V
CC
1 = V
CC
2 = +1.2V to +5.5V, T
A
= -40°C to +85°C, unless otherwise noted. Typical values are at T
A
= +25°C.) (Note 1)
Note 1: Overtemperature limits are guaranteed by design and not production tested.
Note 2: The reset output is guaranteed to be in the correct state if either V
CC
1 or V
CC
2 is within its specified region of operation.
Note 3: The reset output(s) is asserted if either V
CC
1 or V
CC
2 drops below its associated trip point.
Note 4: Guaranteed by design. Not production tested.
Note 5: WDI is internally serviced within the watchdog timeout period if WDI is left unconnected.
Note 6: The WDI input current is specified as the average input current when the WDI input is driven high or low.
(V
CC
1 = +5V, T
A
= +25°C, unless otherwise noted.)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
MR Pullup Resistance 32 63.5 100 kΩ
MR Minimum Pulse Width t
RP
1 µs
MR Glitch Rejection 100 ns
MR to Reset Delay t
MD
0.1 µs
ADJUSTABLE RESET COMPARATOR INPUT (MAX6355/MAX6356/MAX6357)
RSTIN Input Threshold V
RSTIN
V
CC
1 > V
TH
1(MAX),
V
CC
2 > V
TH
2(MAX)
T
A
= +25°C 1.20 1.22 1.24
V
T
A
= -40°C to +85°C 1.19 1.25
RSTIN Input Current I
RSTIN
0 < V
RSTIN
< V
CC
1 - 0.3V -25 25 nA
RSTIN Hysteresis 2.5 mV
V
CC
1 (V)
RESET vs. V
CC
1 (V
CC
2 > V
TH
2)
V
TH
0
1.0
0.5
2.0
1.5
3.0
2.5
3.5
4.5
4.0
5.0
0 1.0 1.5 2.00.5 2.5 3.0 3.5 4.54.0 5.0
MAX6351/60-02
RESET (V)
MAX6356L_
0
1.0
0.5
2.0
1.5
3.0
2.5
3.5
4.5
4.0
5.0
0 1.0 1.5 2.00.5 2.5 3.0 3.5 4.54.0 5.0
MAX6351/60-03
V
CC
1 (V)
RESET (V)
RESET vs. V
CC
1 (V
CC
2 = GND)
0
5
10
15
20
-40 10-15 35 60 85
SUPPLY CURRENT vs. TEMPERATURE
MAX6351/60-01
TEMPERATURE (°C)
SUPPLY CURRENT (µA)
I
CC
1 (V
CC
1 = 5.0V, V
CC
2 = 3.3V)
I
CC
2 (V
CC
1 = 5.0V, V
CC
2 = 3.3V)
I
CC
2 (V
CC
1 = 3.3V, V
CC
2 = 2.5V)
I
CC
1 (V
CC
1 = 3.3V, V
CC
2 = 2.5V)
MAX6351–MAX6360 Dual/Triple-Voltage
μP Supervisory Circuits
www.maximintegrated.com
Maxim Integrated │ 4
Electrical Characteristics (continued)
Typical Operating Characteristics