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Maxim > Solutions > Broadcast TV and Radio
Watchdog
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| Display |
Title/Parts |
Key Advantages |
| QV PDF |
5-Pin Watchdog Timer Circuit
MAX6814
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| QV PDF |
µP Reset Circuits with Capacitor-Adjustable Reset/Watchdog Timeout Delay
MAX6746, MAX6747, MAX6748, MAX6749, MAX6750, MAX6751, MAX6752, MAX6753
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| 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 |
| 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 |
Open Drain |
| Cap Adjustable | | Input (WDI) |
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Manual Reset |
| MAX6748 |
Push-Pull |
| Cap Adjustable | | Input (WDI) |
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Adjustable Reset Input |
| MAX6749 |
Open Drain |
| Cap Adjustable | | Input (WDI) |
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Adjustable Reset Input |
| MAX6752 |
Push-Pull |
| Cap Adjustable | | Input (WDI) | | Windowed |
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- |
| MAX6753 |
Open Drain |
| Cap Adjustable | | Input (WDI) | | Windowed |
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- |
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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 |
| 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 |
Open Drain |
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See All Supervisors (2 Monitored Voltages) (84)
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| Key Specifications: Watchdog Timers |
| Part Number |
Watchdog Feature |
Watchdog Timeout |
Watchdog Output |
ICC
(µA) |
RoHS Available |
Package/Pins |
Smallest Available Pckg.
(mm2) |
Oper. Temp.
(°C) |
| max |
max w/pins |
| MAX6814 |
| Input (WDI) | | Input/Output (WDI/WDO) | | Watchdog Only |
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1s to 2s |
Push-Pull |
24 |
Yes |
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5.3 |
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See All Watchdog Timers (7)
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