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MAX6323

更新时间： 2023-12-20 18:46:14
品牌 Logo 应用领域
亚德诺 - ADI 监控微处理器
页数 文件大小 规格书
14页 1241K
描述
微处理器监控电路，窗式(最小/最大)看门狗定时及手动复位

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中文翻译

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MAX6323 数据手册

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Click here for production status of specific part numbers.  
MAX6323/MAX6324  
μP Supervisory Circuits with Windowed  
(Min/Max) Watchdog and Manual Reset  
General Description  
Features  
The MAX6323/MAX6324 microprocessor (µP) supervi-  
sory circuits monitor power supplies and µP activity in  
digital systems. A watchdog timer looks for activity out-  
side an expected window of operation. Six laser-trimmed  
reset thresholds are available with ±2.5% accuracy from  
+2.32V to +4.63V. Valid RESET output is guaranteed  
● Min/Max (Windowed) Watchdog,  
8 Factory-Trimmed Timing Options  
● Pulsed Open-Drain, Active-Low Watchdog Output  
● Power-On Reset  
● Precision Monitoring of +2.5V, +3.0V, +3.3V,  
and +5.0V Power Supplies  
● Open-Drain or Push-Pull RESET Outputs  
● Low-Power Operation (23µA typ)  
● Debounced Manual Reset Input  
down to V  
= +1.2V.  
CC  
The RESET output is either push-pull (MAX6323) or  
open-drain (MAX6324). RESET is asserted low when  
V
CC  
falls below the reset threshold, or when the manual  
● Guaranteed Reset Valid to V  
● AEC-Q100 Qualified MAX6324HUT44/V+T  
= +1.2V  
CC  
reset input (MR) is asserted low. RESET remains assert-  
ed for at least 100ms after V rises above the reset  
CC  
threshold and MR is deasserted.  
Ordering Information  
The watchdog pulse output (WDPO) utilizes an open-  
drain configuration. It can be triggered either by a fast  
timeout fault (watchdog input pulses are too close to each  
other) or a slow timeout fault (no watchdog input pulse is  
observed within the timeout period). The watchdog time-  
out is measured from the last falling edge of watchdog  
input (WDI) with a minimum pulse width of 300ns. WDPO  
is asserted for 1ms when a fault is observed. Eight laser-  
trimmed timeout periods are available.  
TEMP  
RANGE  
PIN-  
PACKAGE OUTPUT  
-40°C to +125°C 6 SOT23 Push-Pull  
RESET  
PART  
MAX6323_UT_ _-T  
Ordering Information continued at end of data sheet.  
*These devices are factory trimmed to one of eight watchdog-  
timeout windows and one of six reset voltage thresholds. Insert  
the letter corresponding to the desired watchdog-timeout window  
(A, B, C, D, E, F, G, or H) into the blank following the number  
6323 or 6324 (see Watchdog Timeout table). Insert the two-  
digit code (46, 44, 31, 29, 26, or 23) after the letters UT for the  
desired nominal reset threshold (see Reset Threshold Range  
table at end of data sheet).  
The MAX6323/MAX6324 are offered in a 6-pin SOT23  
package and operate over the extended temperature  
range (-40°C to +125°C).  
/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.  
Note: There are eight standard versions of each device available  
(see Standard Versions table). Sample stock is generally held on  
standard versions only. Standard versions have an order  
increment requirement of 2500 pieces. Nonstandard versions  
have an order increment requirement of 10,000 pieces. Contact  
factory for availability of nonstandard versions.  
Applications  
● Automotive  
● Industrial  
● Medical  
● Embedded Control Systems  
Watchdog Timeout  
Pin Configuration  
WATCHDOG TIMEOUT*  
FAST  
SLOW  
UNITS  
TOP VIEW  
SUFFIX  
MAX  
1.5  
15  
UNITS  
ms  
MIN  
10  
MR  
GND  
WDI  
1
2
3
6
5
4
RESET  
WDPO  
A
B
C
D
E
F
ms  
100  
300  
10  
ms  
s
MAX6323  
MAX6324  
15  
ms  
15  
ms  
15  
ms  
60  
V
CC  
23  
ms  
47  
ms  
s
ꢀꢁꢂ23  
G
H
39  
ms  
82  
719  
ms  
1.3  
*See Figure 1 for operation.  
Typical Operating Circuit appears at end of data sheet.  
19-1838; Rev 8; 12/18  
1234567...14

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