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Maxim > Solutions > Automotive
Watchdog Timers
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| Display |
Title/Parts |
Key Advantages |
| QV PDF |
125nA Supervisory Circuits with Capacitor-Adjustable Reset and Watchdog Timeouts
MAX16056, MAX16057, MAX16058, MAX16059
| Capacitor-Adjustable Nanopower Supervisory Circuits |
| 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 Thresh.
(V) |
Reset Out |
Reset Out |
tRESET |
Watchdog Feature |
Watchdog Timeout |
Supervisor Features |
Reset Thresh. Accur.
(%) |
ICC
(µA) |
| Active Low |
Active High |
min |
@ +25°C |
max |
| MAX16056 NEW! |
| 1.2 to 1.8 | | 1.8 to 2.5 | | 2.5 to 3.3 | | 3.3 to 5.5 |
|
Push-Pull |
- |
Adjustable |
| Cap Adjustable | | Input (WDI) |
|
Adjustable |
Manual Reset |
- |
0.125 |
| MAX16057 NEW! |
| 1.2 to 1.8 | | 1.8 to 2.5 | | 2.5 to 3.3 | | 3.3 to 5.5 |
|
Push-Pull |
- |
Adjustable |
No Watchdog |
- |
Manual Reset |
- |
0.125 |
| MAX16058 NEW! |
| 1.2 to 1.8 | | 1.8 to 2.5 | | 2.5 to 3.3 | | 3.3 to 5.5 |
|
Open Drain |
- |
Adjustable |
| Cap Adjustable | | Input (WDI) |
|
Adjustable |
Manual Reset |
- |
0.125 |
| MAX16059 NEW! |
| 1.2 to 1.8 | | 1.8 to 2.5 | | 2.5 to 3.3 | | 3.3 to 5.5 |
|
Open Drain |
- |
Adjustable |
No Watchdog |
- |
Manual Reset |
- |
0.125 |
| 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) |
|
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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) |
|
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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) |
|
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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 |
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| Extended Setup Period | | Input (WDI) | | Input/Output (WDI/WDO) |
|
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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) |
|
|
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) |
|
|
Manual Reset |
2 |
10 |
| 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 |
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| Cap Adjustable | | Input (WDI) |
|
|
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 |
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| Cap Adjustable | | Input (WDI) |
|
|
Adjustable Reset Input |
2 |
10 |
| 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 |
|
|
- |
2 |
10 |
| 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 |
|
|
- |
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 |
|
Push-Pull |
- |
85ms to 300ms |
| Input/Output (WDI/WDO) | | Windowed |
|
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Manual Reset |
1.5 |
45 |
| MAX6324 |
|
Open Drain |
- |
85ms to 300ms |
| Input/Output (WDI/WDO) | | Windowed |
|
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Manual Reset |
1.5 |
45 |
| MAX6316M |
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Bidirectional |
- |
| 1ms to 15ms | | 15ms to 85ms | | 85ms to 300ms | | >1s |
|
Input (WDI) |
|
Manual Reset |
1.5 |
12 |
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See All Supervisors (1 Monitored Voltage) (274)
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| Key Specifications: Supervisors (2 Monitored Voltages) |
| Part Number |
Interface |
Reset Thresh.
(V) |
Reset Out |
tRESET |
Watchdog Feature |
Watchdog Timeout |
Supervisor Features |
Reset Thresh. Accur.
(%) |
ICC
(µA) |
| Active Low |
min |
@ +25°C |
max |
| 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) |
|
|
- |
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) |
|
|
- |
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) |
|
|
- |
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) |
|
|
- |
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) |
|
|
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) |
|
|
Adjustable Reset Input |
2 |
10 |
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See All Supervisors (2 Monitored Voltages) (84)
|
| Key Specifications: Supervisors (3 Monitored Voltages) |
| Part Number |
Interface |
Reset Thresh.
(V) |
Reset Out |
tRESET |
Watchdog Feature |
Watchdog Timeout |
Supervisor Features |
Reset Thresh. Accur.
(%) |
ICC
(µA) |
| Active Low |
min |
@ +25°C |
max |
| 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) |
|
|
| Adjustable Reset Input | | Manual Reset |
|
2.5 |
39 |
| MAX6735A |
Push-Pull |
39 |
| MAX6734 |
Open Drain |
37 |
| MAX6735 |
Push-Pull |
37 |
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See All Supervisors (3 Monitored Voltages) (32)
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| Key Specifications: Watchdog Timers |
| Part Number |
Watchdog Feature |
Watchdog Timeout |
Watchdog Startup Delay |
Watchdog Output |
ICC
(µA) |
RoHS Available |
Industry Qualified |
Package/Pins |
Smallest Available Pckg.
(mm2) |
Oper. Temp.
(°C) |
| min |
max |
max w/pins |
| MAX6369 |
| Input (WDI) | | Input/Output (WDI/WDO) | | Pin Selectable | | Watchdog Only |
|
|
<60s |
Open-Drain |
20 |
Yes |
Automotive - General |
|
9 |
|
| MAX6370 |
<60s |
Push-Pull |
|
| MAX6371 |
60s |
Open-Drain |
|
| MAX6372 |
60s |
Push-Pull |
|
| MAX6373 |
>60s |
Open-Drain |
|
| MAX6374 |
>60s |
Push-Pull |
|
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See All Watchdog Timers (7)
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