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| 型号： | MAX6369KA+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 1/10页 |
| 文件大小： | 0K |
| 描述： | IC WATCHDOG TIMER SOT23-8 |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 1 |
| 类型： | 监视器电路 |
| 监视电压数目： | 1 |
| 输出： | 开路漏极或开路集电极 |
| 复位： | 低有效 |
| 复位超时： | 可调节/可选择 |
| 电压 - 阀值： | 可调节/可选择 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | SOT-23-8 |
| 供应商设备封装： | SOT-23-8 |
| 包装： | 标准包装 |
| 产品目录页面： | 1415 (CN2011-ZH PDF) |
| 其它名称： | MAX6369KA+TDKR |
AVAILAB
LE
MAX6369–MAX6374
Pin-Selectable Watchdog Timers
General Description
The MAX6369–MAX6374 are pin-selectable watchdog
timers that supervise microprocessor (μP) activity and
signal when a system is operating improperly. During
normal operation, the microprocessor should repeated-
ly toggle the watchdog input (WDI) before the selected
watchdog timeout period elapses to demonstrate that
the system is processing code properly. If the μP does
not provide a valid watchdog input transition before the
timeout period expires, the supervisor asserts a watch-
dog ( WDO ) output to signal that the system is not exe-
cuting the desired instructions within the expected time
frame. The watchdog output pulse can be used to reset
the μP or interrupt the system to warn of processing
errors.
The MAX6369–MAX6374 are flexible watchdog timer
supervisors that can increase system reliability through
notification of code execution errors. The family offers
several pin-selectable watchdog timing options to
match a wide range of system timing applications:
? Watchdog startup delay: provides an initial delay
Features
o Precision Watchdog Timer for Critical
μ P Applications
o Pin-Selectable Watchdog Timeout Periods
o Pin-Selectable Watchdog Startup Delay Periods
o Ability to Change Watchdog Timing Characteristics
Without Power Cycling
o Open-Drain or Push-Pull Pulsed Active-Low
Watchdog Output
o Watchdog Timer Disable Feature
o +2.5V to +5.5V Operating Voltage
o 8 μ A Low Supply Current
o No External Components Required
o Miniature 8-Pin SOT23 Package
Ordering Information
________________________Applications
before the watchdog timer is started.
? Watchdog timeout period: normal operating watch-
dog timeout period after the initial startup delay.
? Watchdog output/timing options: open drain (100ms)
or push-pull (1ms).
The MAX6369–MAX6374 operate over a +2.5V to +5.5V
supply range and are available in miniature 8-pin
SOT23 packages.
Functional Diagrams
Embedded Control Systems
PART
MAX6369 KA-T
MAX6369KA/V-T
MAX6369KA/V+T
MAX6370 KA-T
MAX6371 KA-T
MAX6372 KA-T
MAX6373 KA-T
MAX6374 KA-T
TEMP
RANGE
-40 ° C to +125 ° C
-40 ° C to +125 ° C
-40 ° C to +125 ° C
-40 ° C to +125 ° C
-40 ° C to +125 ° C
-40 ° C to +125 ° C
-40 ° C to +125 ° C
-40 ° C to +125 ° C
PIN-
PACKAGE
8 SOT23
8 SOT23
8 SOT23
8 SOT23
8 SOT23
8 SOT23
8 SOT23
8 SOT23
TOP
MARK
AADC
AEQV
AEQV
AADD
AADE
AADF
AADG
AADH
Industrial Controllers
Critical μP and Microcontroller (μC) Monitoring
Automotive
Telecommunications
Networking
Note: All devices are available in tape-and-reel only. Required
order increment is 2,500 pieces.
/V denotes an automotive qualified part.
Devices are available in both leaded and lead-free packaging.
Specify lead-free by replacing “-T” with “+T” when ordering.
Pin Configuration appears at end of data sheet.
Selector Guide
PART
MAX6369
MAX6370
MAX6371
OUTPUT
Open Drain
Push-Pull
Open Drain
WDO PULSE
WIDTH (ms)
100
1
100
MINIMUM STARTUP DELAY
Selectable: 1ms to 60s
Selectable: 1ms to 60s
60s
MINIMUM WATCHDOG TIMEOUT
Selectable: 1ms to 60s
Selectable: 1ms to 60s
Selectable: 1ms to 60s
MAX6373 Diagrams continued at end of data sheet.
Functional
MAX6372 Push-Pull 1
Pin Configurations appear at end of data sheet.
Open Drain 100
UCSP is a of Maxim 1
MAX6374 trademark Push-Pull Integrated Products, Inc.
60s
Selectable: 200μs to 60s or first edge
Selectable: 200μs to 60s or first edge
Selectable: 1ms to 60s
Selectable: 30μs to 10s
Selectable: 30μs to 10s
For pricing, delivery, and ordering information, please contact Maxim Direct
at 1-888-629-4642, or visit Maxim’s website at www.maxim integrated .com.
19-1676; Rev 5; 1/11
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