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Maxim > 方案 > 汽车电子

看门狗定时器

数据资料
显示 标题/型号 关键优势
QV  PDF 单/双/三电压微处理器监控电路，带有独立的看门狗输出
MAX6730A, MAX6731A, MAX6732A, MAX6733A, MAX6734A, MAX6735A

单/双/三电压µP监控电路，具有独立的看门狗输出，可监视低至0.63V的电压
QV  PDF 单/双/三电压微处理器监控电路，带有独立的看门狗输出
MAX6730, MAX6731, MAX6732, MAX6733, MAX6734, MAX6735

单/双/三电压µP监控电路，具有独立的看门狗输出，可监视低至0.63V的电压
QV  PDF 微处理器复位电路，提供电容可调的复位/看门狗延迟时间
MAX6746, MAX6747, MAX6748, MAX6749, MAX6750, MAX6751, MAX6752, MAX6753
QV  PDF 微处理器监控电路，窗式(最小/最大)看门狗定时及手动复位
MAX6323, MAX6324

业内首款µP监控电路，具有窗式看门狗定时器和手动复位
QV  PDF 引脚可设置的看门狗定时器
MAX6369, MAX6370, MAX6371, MAX6372, MAX6373, MAX6374
QV  PDF 5引脚、微处理器监控电路，带有看门狗及手动复位
MAX6316, MAX6316M, MAX6317, MAX6318, MAX6319, MAX6320, MAX6321, MAX6322

通用的可定制SOT复位 + 看门狗IC，提供3,224中独特选择
QV  PDF 5引脚、微处理器监控电路，带有看门狗定时器及手动复位
MAX823, MAX823L, MAX823M, MAX823R, MAX823S, MAX823T, MAX823Y, MAX823Z, MAX824, MAX824L, MAX824M, MAX824R, MAX824S, MAX824T, MAX824Y, MAX824Z, MAX825, MAX825L, MAX825M, MAX825R, MAX825S, MAX825T, MAX825Y, MAX825Z

业内首款SOT复位IC，带有看门狗和手动复位功能



Key Specifications:   Supervisors (1 Monitored Voltage)
Part Number Reset Threshold Range (V) Active-Low Reset Output Active-High 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)
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  -  SOT-23/6 9 -40 to +85
0 to +70
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  -  SOT-23/6 9 -40 to +85
0 to +70
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
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 Automotive - General SC-70/5
SOT-23/5 		5 -40 to +125
-40 to +85
0 to +70
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 Automotive - General SC-70/5
SOT-23/5 		5 -40 to +125
-40 to +85
0 to +70
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 Automotive - General SC-70/5
SOT-23/5 		5 -40 to +125
-40 to +85
0 to +70
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 Automotive - General SOT-23/6 9 -40 to +125
-40 to +85
0 to +70
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 Automotive - General SOT-23/6 9 -40 to +125
-40 to +85
0 to +70
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 Automotive - AECQ100
Automotive - General 		SOT-23/5 9 -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)
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  -  SOT-23/6 9 -40 to +85
0 to +70
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  -  SOT-23/6 9 -40 to +85
0 to +70
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:   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) Package Smallest Available Package (max w/pins) (mm2) Operating Temp. Range (°C)
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 SOT-23/8 9 -40 to +85
0 to +70
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 SOT-23/8 9 -40 to +85
0 to +70
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 Smallest Available Package (max w/pins) (mm2) 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 9 -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 9 -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 9 -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 9 -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 9 -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 9 -40 to +85
0 to +70
See All Watchdog Timers (7)


         


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