概要

 
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ウォッチドッグタイマ



データシート
型番 説明 主な特長
MAX36025 タンパー対応暗号ノードコントローラ、インプリンティングのないメモリ内蔵

業界初、デュアル暗号化エンジン、認証、およびタンパー検出ヒエラルキ内蔵、セキュリティマネージャ
DS3644 プログラマブルなタンパー階層の1KBセキュアメモリ

業界初、タンパー検出階層を備えたセキュアメモリ
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



Key Specifications:

Security Managers
Part Number Analog Voltages Monitored Digital Inputs Monitored Internal Key Memory
(Bytes)		 Ext. Memory Cntrl. Random Number Gen. Over Voltage Monitor Battery Monitor RoHS Available Package/Pins Smallest Available Pckg.
(mm2)		 Oper. Temp.
(°C)
max w/pins
DS3644  4 2 1024 Yes Yes Yes Yes Yes
CSBGA/49
 49 -55 to +95
See All Security Managers (10)

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
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)
 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)
 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)
 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
 - 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
 - 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
 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
 Manual Reset 1.5 45
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
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 
Active Low
Open Drain
See All Supervisors (2 Monitored Voltages) (84)

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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