概要








ウォッチドッグタイマ



データシート
型番 説明 主な特長
MAX6730A, MAX6731A, MAX6732A,
...		 独立したウォッチドッグ出力付き、シングル/デュアル/トリプル電圧µP監視回路

最低0.63Vまで監視する独立したウォッチドッグ出力モニタ付き、シングル/デュアル/トリプル電圧µP監視回路
MAX6730, MAX6731, MAX6732,
...		 シングル/デュアル/トリプル電圧、独立ウォッチドッグ出力付き、µP監視回路

最低0.63Vまで監視する独立したウォッチドッグ出力モニタ付き、シングル/デュアル/トリプル電圧µP監視回路
MAX6746, MAX6747, MAX6748,
...		 コンデンサ可変リセット/ウォッチドッグタイムアウト遅延内蔵、µPリセット回路
MAX6323, MAX6324 ウィンドウ型(Min/Max)ウォッチドッグおよびマニュアルリセット付き、µP監視回路

業界初、ウィンドウ型ウォッチドックおよびマニュアルリセット付き、µP監視回路
MAX6369, MAX6370, MAX6371,
...		 ピン選択可能なウォッチドッグタイマ
MAX6316, MAX6316M, MAX6317,
...		 ウォッチドッグおよびマニュアルリセット付き、5ピン、µP監視回路

多目的、カスタマイズ可能なSOTリセット + ウォッチドッグIC、3,224の個別オプションを提供



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)
min @ +25°C max
MAX6730A 
1.2 to 1.8
1.8 to 2.5
2.5 to 3.3
3.3 to 5.5
Active Low
Open Drain
1ms to 15ms
15ms to 85ms
85ms to 300ms
>1s
Extended Setup Period
Input (WDI)
Input/Output (WDI/WDO)
1s to 2s
>2s
 Manual Reset 2.5 39
MAX6731A 
1.2 to 1.8
1.8 to 2.5
2.5 to 3.3
3.3 to 5.5
Active Low
Push-Pull
1ms to 15ms
15ms to 85ms
85ms to 300ms
>1s
Extended Setup Period
Input (WDI)
Input/Output (WDI/WDO)
1s to 2s
>2s
 Manual Reset 2.5 39
MAX6730 
1.2 to 1.8
1.8 to 2.5
2.5 to 3.3
3.3 to 5.5
Active Low
Open Drain
1ms to 15ms
15ms to 85ms
85ms to 300ms
>1s
Extended Setup Period
Input (WDI)
Input/Output (WDI/WDO)
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
Active Low
Push-Pull
1ms to 15ms
15ms to 85ms
85ms to 300ms
>1s
Extended Setup Period
Input (WDI)
Input/Output (WDI/WDO)
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
Active Low
Push-Pull
1ms to 15ms
15ms to 85ms
85ms to 300ms
300ms to 1s
<1ms
>1s
Adjustable
Cap Adjustable
Input (WDI)
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
Active Low
Open Drain
1ms to 15ms
15ms to 85ms
85ms to 300ms
300ms to 1s
<1ms
>1s
Adjustable
Cap Adjustable
Input (WDI)
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
Active Low
Push-Pull
1ms to 15ms
15ms to 85ms
85ms to 300ms
300ms to 1s
<1ms
>1s
Adjustable
Cap Adjustable
Input (WDI)
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
Active Low
Open Drain
1ms to 15ms
15ms to 85ms
85ms to 300ms
300ms to 1s
<1ms
>1s
Adjustable
Cap Adjustable
Input (WDI)
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
Active Low
Push-Pull
1ms to 15ms
15ms to 85ms
85ms to 300ms
300ms to 1s
<1ms
>1s
Adjustable
Cap Adjustable
Input (WDI)
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
Active Low
Open Drain
1ms to 15ms
15ms to 85ms
85ms to 300ms
300ms to 1s
<1ms
>1s
Adjustable
Cap Adjustable
Input (WDI)
Windowed
1s to 2s
<1s
>2s
Adjustable
 - 2 10
MAX6323 
2.5 to 3.3
3.3 to 5.5
Active Low
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
Active Low
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
Active Low
Bidirectional
1ms to 15ms
15ms to 85ms
85ms to 300ms
>1s
 Input (WDI)
1s to 2s
<1s
>2s
 Manual Reset 1.5 12
See All Supervisors (1 Monitored Voltage) (274)

Supervisors (2 Monitored Voltages)
Part Number Interface Reset Thresh.
(V)		 Reset Out tRESET Watchdog Feature Watchdog Timeout Supervisor Features Reset Thresh. Accur.
(%)		 ICC
(µA)
min @ +25°C max
MAX6732A  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
Active Low
Open Drain
1ms to 15ms
15ms to 85ms
85ms to 300ms
>1s
Extended Setup Period
Input (WDI)
Input/Output (WDI/WDO)
1s to 2s
>2s
 - 2.5 39
MAX6733A  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
Active Low
Push-Pull
1ms to 15ms
15ms to 85ms
85ms to 300ms
>1s
Extended Setup Period
Input (WDI)
Input/Output (WDI/WDO)
1s to 2s
>2s
 - 2.5 39
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
Active Low
Open Drain
1ms to 15ms
15ms to 85ms
85ms to 300ms
>1s
Extended Setup Period
Input (WDI)
Input/Output (WDI/WDO)
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
Active Low
Push-Pull
1ms to 15ms
15ms to 85ms
85ms to 300ms
>1s
Extended Setup Period
Input (WDI)
Input/Output (WDI/WDO)
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
Active Low
Push-Pull
1ms to 15ms
15ms to 85ms
85ms to 300ms
300ms to 1s
<1ms
>1s
Adjustable
Cap Adjustable
Input (WDI)
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
Active Low
Open Drain
1ms to 15ms
15ms to 85ms
85ms to 300ms
300ms to 1s
<1ms
>1s
Adjustable
Cap Adjustable
Input (WDI)
1s to 2s
<1s
>2s
Adjustable
 Adjustable Reset Input 2 10
See All Supervisors (2 Monitored Voltages) (84)

Supervisors (3 Monitored Voltages)
Part Number Interface Reset Thresh.
(V)		 Reset Out tRESET Watchdog Feature Watchdog Timeout Supervisor Features Reset Thresh. Accur.
(%)		 ICC
(µA)
min @ +25°C max
MAX6734A 
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
Active Low
Open Drain
1ms to 15ms
15ms to 85ms
85ms to 300ms
>1s
Extended Setup Period
Input (WDI)
Input/Output (WDI/WDO)
1s to 2s
>2s
Adjustable Reset Input
Manual Reset
 2.5 39
MAX6735A 
Active Low
Push-Pull
 39
MAX6734 
Active Low
Open Drain
 37
MAX6735 
Active Low
Push-Pull
 37
See All Supervisors (3 Monitored Voltages) (32)

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
1s to 2s
<1s
>2s
Adjustable
 <60s Open-Drain 20 Yes
Automotive - AECQ100
Automotive - General
SOT/8
 9
-40 to +85
0 to +70
MAX6370  <60s Push-Pull Automotive - General
SOT/8
MAX6371  60s Open-Drain Automotive - General
SOT/8
MAX6372  60s Push-Pull Automotive - General
SOT/8
MAX6373  >60s Open-Drain Automotive - General
SOT/8
MAX6374  >60s Push-Pull
Automotive - AECQ100
Automotive - General
SOT/8
See All Watchdog Timers (9)





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