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Maxim > Solutions > GPS Solutions

Watchdog Timers

DATA SHEETS
Display Title / Parts Key Advantages
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
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
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 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)
MAX6730  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
85ms to 300ms
>1s 		Input (WDI)
Input/Output (WDI/WDO)
Extended Setup Period 		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 15ms to 85ms
1ms to 15ms
85ms to 300ms
>1s 		Input (WDI)
Input/Output (WDI/WDO)
Extended Setup Period 		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 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
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
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
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
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
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
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 15ms to 85ms
1ms to 15ms
85ms to 300ms
>1s 		Input (WDI) 1s to 2s
<1s
>2s 		Manual Reset 1.5 12
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)
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 15ms to 85ms
1ms to 15ms
85ms to 300ms
>1s 		Input (WDI)
Input/Output (WDI/WDO)
Extended Setup Period 		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 15ms to 85ms
1ms to 15ms
85ms to 300ms
>1s 		Input (WDI)
Input/Output (WDI/WDO)
Extended Setup Period 		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 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
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
See All Supervisors (2 Monitored Voltages) (70)

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)
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 15ms to 85ms
1ms to 15ms
85ms to 300ms
>1s 		Input (WDI)
Input/Output (WDI/WDO)
Extended Setup Period 		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 15ms to 85ms
1ms to 15ms
85ms to 300ms
>1s 		Input (WDI)
Input/Output (WDI/WDO)
Extended Setup Period 		1s to 2s
>2s 		Adjustable Reset Input
Manual Reset 		2.5 37
See All Supervisors (3 Monitored Voltages) (21)

Key Specifications:   Watchdog Timers
Part Number Watchdog Feature Nom. Watchdog Timeout Range Min. Watchdog Startup Delay Watchdog Output Max. ICC (µA) Industry Qualified Package 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-23/8 -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-23/8 -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-23/8 -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-23/8 -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-23/8 -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-23/8 -40 to +85
0 to +70
See All Watchdog Timers (7)


         


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