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Maxim > Solutions > Broadcast TV and Radio

Watchdog

DATA SHEETS
Display Title / Parts Key Advantages
QV  PDF 5-Pin Watchdog Timer Circuit
MAX6814

QV  PDF µP Reset Circuits with Capacitor-Adjustable Reset/Watchdog Timeout Delay
MAX6746, MAX6747, MAX6748, MAX6749, MAX6750, MAX6751, MAX6752, MAX6753




Key Specifications:   Supervisors (1 Monitored Voltage)
Part Number 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) Industry Qualified Package Smallest Available Package (max w/pins) (mm2) Operating Temp. Range (°C)
MAX6746  1.2 to 1.8
1.8 to 2.5
2.5 to 3.3
3.3 to 5.5
Push-Pull 15ms to 85ms
1ms to 15ms
300ms to 1s
85ms to 300ms
<1ms
>1s
Adjustable
Input (WDI)
Cap Adjustable
1s to 2s
<1s
>2s
Adjustable
Manual Reset 2 10 Automotive - General SOT-23/8 9 -40 to +125
-40 to +85
0 to +70
MAX6747  1.2 to 1.8
1.8 to 2.5
2.5 to 3.3
3.3 to 5.5
Open Drain 15ms to 85ms
1ms to 15ms
300ms to 1s
85ms to 300ms
<1ms
>1s
Adjustable
Input (WDI)
Cap Adjustable
1s to 2s
<1s
>2s
Adjustable
Manual Reset 2 10 Automotive - General SOT-23/8 9 -40 to +125
-40 to +85
0 to +70
MAX6748  1.2 to 1.8
1.8 to 2.5
2.5 to 3.3
3.3 to 5.5
Push-Pull 15ms to 85ms
1ms to 15ms
300ms to 1s
85ms to 300ms
<1ms
>1s
Adjustable
Input (WDI)
Cap Adjustable
1s to 2s
<1s
>2s
Adjustable
Adjustable Reset Input 2 10 Automotive - General SOT-23/8 9 -40 to +125
-40 to +85
0 to +70
MAX6749  1.2 to 1.8
1.8 to 2.5
2.5 to 3.3
3.3 to 5.5
Open Drain 15ms to 85ms
1ms to 15ms
300ms to 1s
85ms to 300ms
<1ms
>1s
Adjustable
Input (WDI)
Cap Adjustable
1s to 2s
<1s
>2s
Adjustable
Adjustable Reset Input 2 10 Automotive - General SOT-23/8 9 -40 to +125
-40 to +85
0 to +70
MAX6752  1.2 to 1.8
1.8 to 2.5
2.5 to 3.3
3.3 to 5.5
Push-Pull 15ms to 85ms
1ms to 15ms
300ms to 1s
85ms to 300ms
<1ms
>1s
Adjustable
Input (WDI)
Cap Adjustable
Windowed
1s to 2s
<1s
>2s
Adjustable
 -  2 10 Automotive - General SOT-23/8 9 -40 to +125
-40 to +85
0 to +70
MAX6753  1.2 to 1.8
1.8 to 2.5
2.5 to 3.3
3.3 to 5.5
Open Drain 15ms to 85ms
1ms to 15ms
300ms to 1s
85ms to 300ms
<1ms
>1s
Adjustable
Input (WDI)
Cap Adjustable
Windowed
1s to 2s
<1s
>2s
Adjustable
 -  2 10 Automotive - General SOT-23/8 9 -40 to +125
-40 to +85
0 to +70
See All Supervisors (1 Monitored Voltage) (268)

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) Industry Qualified Package Smallest Available Package (max w/pins) (mm2) Operating Temp. Range (°C)
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 15ms to 85ms
1ms to 15ms
300ms to 1s
85ms to 300ms
<1ms
>1s
Adjustable
Input (WDI)
Cap Adjustable
1s to 2s
<1s
>2s
Adjustable
Adjustable Reset Input 2 10 Automotive - General SOT-23/8 9 -40 to +125
-40 to +85
0 to +70
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 15ms to 85ms
1ms to 15ms
300ms to 1s
85ms to 300ms
<1ms
>1s
Adjustable
Input (WDI)
Cap Adjustable
1s to 2s
<1s
>2s
Adjustable
Adjustable Reset Input 2 10 Automotive - General SOT-23/8 9 -40 to +125
-40 to +85
0 to +70
See All Supervisors (2 Monitored Voltages) (70)

Key Specifications:   Watchdog Timers
Part Number Watchdog Feature Nom. Watchdog Timeout Range Watchdog Output Max. ICC (µA) Package Smallest Available Package (max w/pins) (mm2) Operating Temp. Range (°C)
MAX6814  Input (WDI)
Input/Output (WDI/WDO)
Watchdog Only
1s to 2s Push-Pull 24 SC-70/5 5 -40 to +85
0 to +70
See All Watchdog Timers (7)




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