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| 型号： | MAX706SEUA+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 8/15页 |
| 文件大小： | 0K |
| 描述： | IC MPU SUPERVISOR 3V 8-MSOP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 类型： | 简单复位/加电复位 |
| 监视电压数目： | 1 |
| 输出： | 推挽式，图腾柱 |
| 复位： | 低有效 |
| 复位超时： | 最小为 140 ms |
| 电压 - 阀值： | 2.93V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-TSSOP，8-MSOP（0.118"，3.00mm 宽） |
| 供应商设备封装： | 8-uMAX |
| 包装： | 带卷 (TR) |
+3V Voltage Monitoring, Low-Cost μP
Supervisory Circuits
+3.3V
V CC
+1V
V RST
V RST
t RST
t RST
+12V
+3V/+3.3V
RESET
0V
+3.3V
1M ?
1%
V CC
RESET
(RESET)
MAX706_
TO μ P
RESET
0V
+3.3V
MR*
0V
+3.3V
t MD
t MR
130k ?
1%
MAX708R/S/T
MR
PFI PFO
GND
WDO TIMING SHOWN FOR MAX706P/R/S/T.
*NOTE: MR EXTERNALLY DRIVEN LOW.
WDO*
0V
Figure 3. RESET, RESET , MR , and WDO Timing
t WP
t WD
t WD
t WD
PARAMETER
+12V RESET
THRESHOLD AT +25 ° C
( ) ARE FOR MAX706P/AP
MIN
10.24
TYP
10.87
MAX
11.50
UNIT
V
+3V/+3.3V
WDI
0V
+3V/+3.3V
Figure 5. Monitoring Both +3V/+3.3V and +12V
WDO
0V
+3V/+3.3V
RESET
0V
RESET EXTERNALLY
TRIGGERED BY MR
t RST
MAX706R/S/T
MAX708R/S/T
MAX706AR/AS/AT
RESET
Figure 4. MAX706AP/AR/AS/AT Watchdog Timing
WDO can be connected to the nonmaskable interrupt
(NMI) input of a μP. When V CC drops below the reset
threshold, WDO immediately goes low, even if the
watchdog timer has not timed out (Figure 3). Normally,
this would trigger an NMI, but since reset is asserted
simultaneously, the NMI is overridden. The WDO
should not be connected to RESET directly. Instead,
connect WDO to MR to generate a reset pulse when it
times out.
Manual Reset
The manual reset ( MR ) input allows RESET and RESET
to be activated by a pushbutton switch. The switch is
effectively debounced by the 140ms minimum reset
pulse width. MR can be driven by an external logic line
since it is TTL/CMOS compatible. The minimum MR
R1
Figure 6. RESET Valid to GND Circuit
input pulse width is 500ns when V CC = +3V and 150ns
when V CC = +5V. Leave MR unconnected or connect
to V CC when not used.
Power-Fail Comparator
The power-fail comparator can be used for various pur-
poses because its output and noninverting input are
not internally connected. The inverting input is internally
connected to a 1.25V reference. The power-fail com-
parator has 10mV of hysteresis, which prevents repeat-
ed triggering of the power-fail output ( PFO ).
8
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX706SFPA | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Analog IC |
| MAX706SMJA | 功能描述:监控电路 RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel |
| MAX706T | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:+3V Voltage Monitoring, Low-Cost uP Supervisory Circuits |
| MAX706TC/D | 功能描述:监控电路 RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel |
| MAX706TCPA | 功能描述:监控电路 RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel |
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