MAX6422US37-T Maxim Integrated, MAX6422US37-T Datasheet - Page 6

• Manufacturer Part Number: MAX6422US37-T
• Description: Supervisory Circuits
• Manufacturer: Maxim Integrated
• Series: MAX6340, MAX6421, MAX6422, MAX6423, MAX6424, MAX6425, MAX6426r

Specifications of MAX6422US37-T

• Number Of Voltages Monitored: 1
• Monitored Voltage: 1.6 V to 5 V
• Undervoltage Threshold: 3.608 V
• Overvoltage Threshold: 3.793 V
• Output Type: Active High, Push-Pull
• Manual Reset: Not Resettable
• Watchdog: No Watchdog
• Battery Backup Switching: No Backup
• Power-up Reset Delay (typ): 4.375 ms
• Supply Voltage - Max: 5.5 V
• Maximum Operating Temperature: + 125 C
• Mounting Style: SMD/SMT
• Package / Case: SOT-143
• Chip Enable Signals: No
• Maximum Power Dissipation: 320 mW
• Minimum Operating Temperature: - 40 C
• Power Fail Detection: No
• Supply Current (typ): 2.5 uA
• Supply Voltage - Min: 1 V

Low-Power, SC70/SOT µP Reset Circuits with
Capacitor-Adjustable Reset Timeout Delay
Figure 3. Ensuring RESET Valid to V
Figure 4. Ensuring RESET Valid to V
tor between RESET and V
V
sions are not recommended for applications requiring
valid logic for V
SRT is a precise current source. When developing the
layout for the application, be careful to minimize board
capacitance and leakage currents around this pin.
Traces connected to SRT should be kept as short as
possible. Traces carrying high-speed digital signals
and traces with large voltage potentials should be rout-
ed as far from SRT as possible. Leakage current and
stray capacitance (e.g., a scope probe) at this pin
could cause errors in the reset timeout period. When
evaluating these parts, use clean prototype boards to
ensure accurate reset periods.
6
CC
_______________________________________________________________________________________
falls below 1V (Figure 4). Open-drain RESET ver-
CC
MAX6422
down to zero.
MAX6421
MAX6424
GND
GND
CC
RESET
Layout Consideration
V
CC
RESET
holds RESET high when
V
CC
CC
CC
V
= 0
= 0
CC
V
CC
100kΩ
100kΩ
Table 1. Reset Threshold Voltage Suffix
SUFFIX
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
1.536
1.623
1.755
1.853
1.950
2.048
2.133
2.313
2.340
2.438
2.559
2.633
2.730
2.852
2.925
2.998
3.120
3.218
3.315
3.413
3.510
3.608
3.705
3.803
3.900
3.998
4.095
4.193
4.266
4.388
4.509
4.583
4.680
4.778
4.875
MIN
1.575
1.665
1.800
1.900
2.000
2.100
2.188
2.313
2.400
2.500
2.625
2.700
2.800
2.925
3.000
3.075
3.200
3.300
3.400
3.500
3.600
3.700
3.800
3.900
4.000
4.100
4.200
4.300
4.375
4.500
4.625
4.700
4.800
4.900
5.000
TYP
1.614
1.707
1.845
1.948
2.050
2.153
2.243
2.371
2.460
2.563
2.691
2.768
2.870
2.998
3.075
3.152
3.280
3.383
3.485
3.558
3.690
3.793
3.895
3.998
4.100
4.203
4.305
4.408
4.484
4.613
4.741
4.818
4.920
5.023
5.125
MAX