Datasheet

MAX6841–MAX6845
Ultra-Low-Voltage µP Reset Circuits and
Voltage Detectors
_______________________________________________________________________________________ 3
Note 1: 100% production tested at +25°C. Overtemperature limits are guaranteed by design.
Note 2: The active-low output RESET has V
CC(MIN)
= 0.55V (MAX6841/MAX6842).
Note 3: For V
CC
> 0.788V, T
A
= 0°C to +85°C, and for V
CC
> 0.833V, T
A
= -40°C to +85°C.
ELECTRICAL CHARACTERISTICS (continued)
(V
CC
= +0.55V to +1.8V, 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
≥ 0.55V, I
SINK
= 10µA, reset asserted 0.2 × V
CC
Open-Drain RESET Output
Voltage
V
OL
V
CC
≥ 0.83V, I
SINK
= 80µA, reset asserted
0.2 × V
CC
V
Open-Drain RESET Output
Leakage Current
I
LKG
V
CC
> V
TH
, reset not asserted 1 µA
V
CC
≥ 0.55V, I
SINK
= 10µA, reset asserted 0.2 × V
CC
V
OL
V
CC
≥ 0.83V, I
SINK
= 80µA, reset asserted
0.2 × V
CC
Push-Pull RESET Output Voltage
V
OH
V
CC
≥ 0.83V, I
SOURCE
= 40µA, reset not
asserted
0.8 × V
CC
V
V
CC
≥ 0.75V, I
SOURCE
= 10µA, reset
asserted
0.8 × V
CC
V
OH
V
CC
≥ 0.83V, I
SOURCE
= 40µA, reset
asserted
0.8 × V
CC
Push-Pull RESET Output Voltage
V
OL
V
CC
≥ 0.83V, I
SINK
= 80µA, reset not
asserted
0.2 × V
CC
V
Typical Operating Characteristics
(V
CC
= 1.5V, T
A
= +25°C, unless otherwise noted.)
SUPPLY CURRENT
vs. TEMPERATURE
MAX6841-45 toc01
TEMPERATURE (°C)
SUPPLY CURRENT (µA)
6040200-20
1
2
3
4
5
6
7
8
9
0
-40 80
V
CC
= 1.8V
V
CC
= 1.5V
V
CC
= 0.9V
POWER-DOWN RESET DELAY
vs. TEMPERATURE
MAX6841-45 toc02
TEMPERATURE (°C)
POWER-DOWN RESET DELAY (µs)
6040200-20
50
100
150
200
250
300
350
0
-40 80
V
OD
= 10mV
V
OD
= 20mV
V
OD
= 100mV
V
OD
= OVERDRIVE (mV)
NORMALIZED RESET TIMEOUT PERIOD
vs. TEMPERATURE
MAX6841-45 toc03
TEMPERATURE (°C)
NORMALIZED RESET TIMEOUT PERIOD
6040200-20
0.96
0.98
1.00
1.02
1.04
1.06
0.94
-40 80
D2 OPTION
D3 OPTION
D4 OPTION