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Maxim > Solutions > Automotive
Watchdog Timers
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| Display |
Title / Parts |
Key Advantages |
| QV |
Capacitor-Adjustable Nanopower Supervisory Circuits
MAX16056, MAX16057, MAX16058, MAX16059
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| QV PDF |
Single-/Dual-/Triple-Voltage µP Supervisory Circuits with Independent Watchdog Output
MAX6730A, MAX6731A, MAX6732A, MAX6733A, MAX6734A, MAX6735A
| Single-/Dual-/Triple-Voltage µP Supervisory Circuits with Independent Watchdog Output Monitor Down to 0.63V |
| QV PDF |
Single-/Dual-/Triple-Voltage µP Supervisory Circuits with Independent Watchdog Output
MAX6730, MAX6731, MAX6732, MAX6733, MAX6734, MAX6735
| Single-/Dual-/Triple-Voltage µP Supervisory Circuits with Independent Watchdog Output Monitor Down to 0.63V |
| QV PDF |
µP Reset Circuits with Capacitor-Adjustable Reset/Watchdog Timeout Delay
MAX6746, MAX6747, MAX6748, MAX6749, MAX6750, MAX6751, MAX6752, MAX6753
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| QV PDF |
µP Supervisory Circuits with Windowed (Min/Max) Watchdog and Manual Reset
MAX6323, MAX6324
| Industry's-First µP Supervisory with Windowed Watchdog and Manual Reset |
| QV PDF |
Pin-Selectable Watchdog Timers
MAX6369, MAX6370, MAX6371, MAX6372, MAX6373, MAX6374
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| QV PDF |
5-Pin µP Supervisory Circuits with Watchdog and Manual Reset
MAX6316, MAX6316M, MAX6317, MAX6318, MAX6319, MAX6320, MAX6321, MAX6322
| Versatile, Customizable SOT Reset + Watchdog ICs Offer 3,224 Unique Options |
| QV PDF |
5-Pin Microprocessor Supervisory Circuits with Watchdog Timer and Manual Reset
MAX823, MAX823L, MAX823M, MAX823R, MAX823S, MAX823T, MAX823Y, MAX823Z, MAX824, MAX824L, MAX824M, MAX824R, MAX824S, MAX824T, MAX824Y, MAX824Z, MAX825, MAX825L, MAX825M, MAX825R, MAX825S, MAX825T, MAX825Y, MAX825Z
| Industry's-First SOT Reset ICs with Watchdog and Manual Reset |
| Key Specifications:
Supervisors (1 Monitored Voltage) |
| Part Number |
Reset Threshold Range (V) |
Active-Low Reset Output |
Active-High Reset Output |
Min. Reset Timeout Range |
Watchdog Feature |
Nom. Watchdog Timeout Range |
Supervisor Features |
Reset Thresh. Acc. (% @+25°C) |
Max. ICC (µA) |
|
MAX6730A
|
1.2 to 1.8
1.8 to 2.5
2.5 to 3.3
3.3 to 5.5
|
Open Drain
|
-
|
1ms to 15ms
15ms to 85ms
85ms to 300ms
>1s
|
Extended Setup Period
Input (WDI)
Input/Output (WDI/WDO)
|
1s to 2s
>2s
|
Manual Reset
|
2.5
|
39
|
|
MAX6731A
|
1.2 to 1.8
1.8 to 2.5
2.5 to 3.3
3.3 to 5.5
|
Push-Pull
|
-
|
1ms to 15ms
15ms to 85ms
85ms to 300ms
>1s
|
Extended Setup Period
Input (WDI)
Input/Output (WDI/WDO)
|
1s to 2s
>2s
|
Manual Reset
|
2.5
|
39
|
|
MAX6730
|
1.2 to 1.8
1.8 to 2.5
2.5 to 3.3
3.3 to 5.5
|
Open Drain
|
-
|
1ms to 15ms
15ms to 85ms
85ms to 300ms
>1s
|
Extended Setup Period
Input (WDI)
Input/Output (WDI/WDO)
|
1s to 2s
>2s
|
Manual Reset
|
2.5
|
37
|
|
MAX6731
|
1.2 to 1.8
1.8 to 2.5
2.5 to 3.3
3.3 to 5.5
|
Push-Pull
|
-
|
1ms to 15ms
15ms to 85ms
85ms to 300ms
>1s
|
Extended Setup Period
Input (WDI)
Input/Output (WDI/WDO)
|
1s to 2s
>2s
|
Manual Reset
|
2.5
|
37
|
|
MAX6746
|
1.2 to 1.8
1.8 to 2.5
2.5 to 3.3
3.3 to 5.5
|
Push-Pull
|
-
|
1ms to 15ms
15ms to 85ms
85ms to 300ms
300ms to 1s
<1ms
>1s
Adjustable
|
Cap Adjustable
Input (WDI)
|
1s to 2s
<1s
>2s
Adjustable
|
Manual Reset
|
2
|
10
|
|
MAX6747
|
1.2 to 1.8
1.8 to 2.5
2.5 to 3.3
3.3 to 5.5
|
Open Drain
|
-
|
1ms to 15ms
15ms to 85ms
85ms to 300ms
300ms to 1s
<1ms
>1s
Adjustable
|
Cap Adjustable
Input (WDI)
|
1s to 2s
<1s
>2s
Adjustable
|
Manual Reset
|
2
|
10
|
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MAX6748
|
1.2 to 1.8
1.8 to 2.5
2.5 to 3.3
3.3 to 5.5
|
Push-Pull
|
-
|
1ms to 15ms
15ms to 85ms
85ms to 300ms
300ms to 1s
<1ms
>1s
Adjustable
|
Cap Adjustable
Input (WDI)
|
1s to 2s
<1s
>2s
Adjustable
|
Adjustable Reset Input
|
2
|
10
|
|
MAX6749
|
1.2 to 1.8
1.8 to 2.5
2.5 to 3.3
3.3 to 5.5
|
Open Drain
|
-
|
1ms to 15ms
15ms to 85ms
85ms to 300ms
300ms to 1s
<1ms
>1s
Adjustable
|
Cap Adjustable
Input (WDI)
|
1s to 2s
<1s
>2s
Adjustable
|
Adjustable Reset Input
|
2
|
10
|
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MAX6752
|
1.2 to 1.8
1.8 to 2.5
2.5 to 3.3
3.3 to 5.5
|
Push-Pull
|
-
|
1ms to 15ms
15ms to 85ms
85ms to 300ms
300ms to 1s
<1ms
>1s
Adjustable
|
Cap Adjustable
Input (WDI)
Windowed
|
1s to 2s
<1s
>2s
Adjustable
|
-
|
2
|
10
|
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MAX6753
|
1.2 to 1.8
1.8 to 2.5
2.5 to 3.3
3.3 to 5.5
|
Open Drain
|
-
|
1ms to 15ms
15ms to 85ms
85ms to 300ms
300ms to 1s
<1ms
>1s
Adjustable
|
Cap Adjustable
Input (WDI)
Windowed
|
1s to 2s
<1s
>2s
Adjustable
|
-
|
2
|
10
|
|
MAX823
|
1.8 to 2.5
2.5 to 3.3
3.3 to 5.5
|
Push-Pull
|
-
|
85ms to 300ms
|
Input (WDI)
|
1s to 2s
|
Manual Reset
|
-
|
24
|
|
MAX824
|
1.8 to 2.5
2.5 to 3.3
3.3 to 5.5
|
Push-Pull
|
Push-Pull
|
85ms to 300ms
|
Input (WDI)
|
1s to 2s
|
-
|
-
|
24
|
|
MAX825
|
1.8 to 2.5
2.5 to 3.3
3.3 to 5.5
|
Push-Pull
|
Push-Pull
|
85ms to 300ms
|
No Watchdog
|
-
|
Manual Reset
|
-
|
12
|
|
MAX6323
|
2.5 to 3.3
3.3 to 5.5
|
Push-Pull
|
-
|
85ms to 300ms
|
Input/Output (WDI/WDO)
Windowed
|
1s to 2s
<1s
>2s
Adjustable
|
Manual Reset
|
1.5
|
45
|
|
MAX6324
|
2.5 to 3.3
3.3 to 5.5
|
Open Drain
|
-
|
85ms to 300ms
|
Input/Output (WDI/WDO)
Windowed
|
1s to 2s
<1s
>2s
Adjustable
|
Manual Reset
|
1.5
|
45
|
|
MAX6316M
|
2.5 to 3.3
3.3 to 5.5
|
Bidirectional
|
-
|
1ms to 15ms
15ms to 85ms
85ms to 300ms
>1s
|
Input (WDI)
|
1s to 2s
<1s
>2s
|
Manual Reset
|
1.5
|
12
|
| See All Supervisors (1 Monitored Voltage) (270) |
| Key Specifications:
Supervisors (2 Monitored Voltages) |
| Part Number |
Interface |
Reset Threshold Range (V) |
Active-Low Reset Output |
Min. Reset Timeout Range |
Watchdog Feature |
Nom. Watchdog Timeout Range |
Supervisor Features |
Reset Thresh. Acc. (% @+25°C) |
Max. ICC (µA) |
|
MAX6732A
|
Factory Fixed
|
0 to 1.2
1.2 to 1.8
1.8 to 2.5
2.5 to 3.3
3.3 to 5.5
|
Open Drain
|
1ms to 15ms
15ms to 85ms
85ms to 300ms
>1s
|
Extended Setup Period
Input (WDI)
Input/Output (WDI/WDO)
|
1s to 2s
>2s
|
-
|
2.5
|
39
|
|
MAX6733A
|
Factory Fixed
|
0 to 1.2
1.2 to 1.8
1.8 to 2.5
2.5 to 3.3
3.3 to 5.5
|
Push-Pull
|
1ms to 15ms
15ms to 85ms
85ms to 300ms
>1s
|
Extended Setup Period
Input (WDI)
Input/Output (WDI/WDO)
|
1s to 2s
>2s
|
-
|
2.5
|
39
|
|
MAX6732
|
Factory Fixed
|
0 to 1.2
1.2 to 1.8
1.8 to 2.5
2.5 to 3.3
3.3 to 5.5
|
Open Drain
|
1ms to 15ms
15ms to 85ms
85ms to 300ms
>1s
|
Extended Setup Period
Input (WDI)
Input/Output (WDI/WDO)
|
1s to 2s
>2s
|
-
|
2.5
|
37
|
|
MAX6733
|
Factory Fixed
|
0 to 1.2
1.2 to 1.8
1.8 to 2.5
2.5 to 3.3
3.3 to 5.5
|
Push-Pull
|
1ms to 15ms
15ms to 85ms
85ms to 300ms
>1s
|
Extended Setup Period
Input (WDI)
Input/Output (WDI/WDO)
|
1s to 2s
>2s
|
-
|
2.5
|
37
|
|
MAX6750
|
Factory Fixed
R/C Adjustable
|
1.2 to 1.8
1.8 to 2.5
2.5 to 3.3
3.3 to 5.5
|
Push-Pull
|
1ms to 15ms
15ms to 85ms
85ms to 300ms
300ms to 1s
<1ms
>1s
Adjustable
|
Cap Adjustable
Input (WDI)
|
1s to 2s
<1s
>2s
Adjustable
|
Adjustable Reset Input
|
2
|
10
|
|
MAX6751
|
Factory Fixed
R/C Adjustable
|
1.2 to 1.8
1.8 to 2.5
2.5 to 3.3
3.3 to 5.5
|
Open Drain
|
1ms to 15ms
15ms to 85ms
85ms to 300ms
300ms to 1s
<1ms
>1s
Adjustable
|
Cap Adjustable
Input (WDI)
|
1s to 2s
<1s
>2s
Adjustable
|
Adjustable Reset Input
|
2
|
10
|
| See All Supervisors (2 Monitored Voltages) (84) |
| Key Specifications:
Supervisors (3 Monitored Voltages) |
| Part Number |
Interface |
Reset Threshold Range (V) |
Active-Low Reset Output |
Min. Reset Timeout Range |
Watchdog Feature |
Nom. Watchdog Timeout Range |
Supervisor Features |
Reset Thresh. Acc. (% @+25°C) |
Max. ICC (µA) |
|
MAX6734A
|
Factory Fixed
R/C Adjustable
|
0 to 1.2
1.2 to 1.8
1.8 to 2.5
2.5 to 3.3
3.3 to 5.5
|
Open Drain
|
1ms to 15ms
15ms to 85ms
85ms to 300ms
>1s
|
Extended Setup Period
Input (WDI)
Input/Output (WDI/WDO)
|
1s to 2s
>2s
|
Adjustable Reset Input
Manual Reset
|
2.5
|
39
|
|
MAX6735A
|
Factory Fixed
R/C Adjustable
|
0 to 1.2
1.2 to 1.8
1.8 to 2.5
2.5 to 3.3
3.3 to 5.5
|
Push-Pull
|
1ms to 15ms
15ms to 85ms
85ms to 300ms
>1s
|
Extended Setup Period
Input (WDI)
Input/Output (WDI/WDO)
|
1s to 2s
>2s
|
Adjustable Reset Input
Manual Reset
|
2.5
|
39
|
|
MAX6734
|
Factory Fixed
R/C Adjustable
|
0 to 1.2
1.2 to 1.8
1.8 to 2.5
2.5 to 3.3
3.3 to 5.5
|
Open Drain
|
1ms to 15ms
15ms to 85ms
85ms to 300ms
>1s
|
Extended Setup Period
Input (WDI)
Input/Output (WDI/WDO)
|
1s to 2s
>2s
|
Adjustable Reset Input
Manual Reset
|
2.5
|
37
|
|
MAX6735
|
Factory Fixed
R/C Adjustable
|
0 to 1.2
1.2 to 1.8
1.8 to 2.5
2.5 to 3.3
3.3 to 5.5
|
Push-Pull
|
1ms to 15ms
15ms to 85ms
85ms to 300ms
>1s
|
Extended Setup Period
Input (WDI)
Input/Output (WDI/WDO)
|
1s to 2s
>2s
|
Adjustable Reset Input
Manual Reset
|
2.5
|
37
|
| See All Supervisors (3 Monitored Voltages) (32) |
| Key Specifications:
Watchdog Timers |
| Part Number |
Watchdog Feature |
Nom. Watchdog Timeout Range |
Min. Watchdog Startup Delay |
Watchdog Output |
Max. ICC (µA) |
Industry Qualified |
Package |
Smallest Available Package (max w/pins) (mm2) |
Operating Temp. Range (°C) |
|
MAX6369
|
Input (WDI)
Input/Output (WDI/WDO)
Pin Selectable
Watchdog Only
|
1s to 2s
<1s
>2s
Adjustable
|
<60s
|
Open-Drain
|
20
|
Automotive - General
|
SOT/8
|
9
|
-40 to +85
0 to +70
|
|
MAX6370
|
Input (WDI)
Input/Output (WDI/WDO)
Pin Selectable
Watchdog Only
|
1s to 2s
<1s
>2s
Adjustable
|
<60s
|
Push-Pull
|
20
|
Automotive - General
|
SOT/8
|
9
|
-40 to +85
0 to +70
|
|
MAX6371
|
Input (WDI)
Input/Output (WDI/WDO)
Pin Selectable
Watchdog Only
|
1s to 2s
<1s
>2s
Adjustable
|
60s
|
Open-Drain
|
20
|
Automotive - General
|
SOT/8
|
9
|
-40 to +85
0 to +70
|
|
MAX6372
|
Input (WDI)
Input/Output (WDI/WDO)
Pin Selectable
Watchdog Only
|
1s to 2s
<1s
>2s
Adjustable
|
60s
|
Push-Pull
|
20
|
Automotive - General
|
SOT/8
|
9
|
-40 to +85
0 to +70
|
|
MAX6373
|
Input (WDI)
Input/Output (WDI/WDO)
Pin Selectable
Watchdog Only
|
1s to 2s
<1s
>2s
Adjustable
|
>60s
|
Open-Drain
|
20
|
Automotive - General
|
SOT/8
|
9
|
-40 to +85
0 to +70
|
|
MAX6374
|
Input (WDI)
Input/Output (WDI/WDO)
Pin Selectable
Watchdog Only
|
1s to 2s
<1s
>2s
Adjustable
|
>60s
|
Push-Pull
|
20
|
Automotive - General
|
SOT/8
|
9
|
-40 to +85
0 to +70
|
| See All Watchdog Timers (7) |
|
|
