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Maxim > Solutions > Displays: Industrial, Front Panel, and Instrumentation
Watchdog Timers
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| Display |
Title/Parts |
Key Advantages |
| 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 |
| Key Specifications: Supervisors (1 Monitored Voltage) |
| Part Number |
Reset Thresh.
(V) |
Reset Out |
tRESET |
Watchdog Feature |
Watchdog Timeout |
Supervisor Features |
Reset Thresh. Accur.
(%) |
ICC
(µA) |
| Active Low |
min |
@ +25°C |
max |
| MAX6730 |
| 1.2 to 1.8 | | 1.8 to 2.5 | | 2.5 to 3.3 | | 3.3 to 5.5 |
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Open Drain |
| 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 |
| MAX6731 |
| 1.2 to 1.8 | | 1.8 to 2.5 | | 2.5 to 3.3 | | 3.3 to 5.5 |
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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 |
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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) |
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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 |
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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) |
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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 |
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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) |
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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 |
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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) |
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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 |
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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) | | Windowed |
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- |
2 |
10 |
| MAX6753 |
| 1.2 to 1.8 | | 1.8 to 2.5 | | 2.5 to 3.3 | | 3.3 to 5.5 |
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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) | | Windowed |
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- |
2 |
10 |
| MAX6323 |
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Push-Pull |
85ms to 300ms |
| Input/Output (WDI/WDO) | | Windowed |
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Manual Reset |
1.5 |
45 |
| MAX6324 |
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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 |
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Input (WDI) |
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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 |
| 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 |
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Open Drain |
| 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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- |
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 |
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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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- |
2.5 |
37 |
| MAX6750 |
| Factory Fixed | | R/C Adjustable |
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| 1.2 to 1.8 | | 1.8 to 2.5 | | 2.5 to 3.3 | | 3.3 to 5.5 |
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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) |
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Adjustable Reset Input |
2 |
10 |
| MAX6751 |
| Factory Fixed | | R/C Adjustable |
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| 1.2 to 1.8 | | 1.8 to 2.5 | | 2.5 to 3.3 | | 3.3 to 5.5 |
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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) |
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Adjustable Reset Input |
2 |
10 |
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See All Supervisors (2 Monitored Voltages) (84)
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| 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 |
| MAX6734 |
| Factory Fixed | | R/C Adjustable |
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| 0 to 1.2 | | 1.2 to 1.8 | | 1.8 to 2.5 | | 2.5 to 3.3 | | 3.3 to 5.5 |
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Open Drain |
| 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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| Adjustable Reset Input | | Manual Reset |
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2.5 |
37 |
| MAX6735 |
Push-Pull |
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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 |
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<60s |
Open-Drain |
20 |
Yes |
Automotive - General |
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9 |
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| MAX6370 |
<60s |
Push-Pull |
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| MAX6371 |
60s |
Open-Drain |
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| MAX6372 |
60s |
Push-Pull |
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| MAX6373 |
>60s |
Open-Drain |
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| MAX6374 |
>60s |
Push-Pull |
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See All Watchdog Timers (7)
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