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参数资料
| 型号： | MAX708REUA+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 5/12页 |
| 文件大小： | 0K |
| 描述： | IC SUPERVISOR MPU 8-UMAX |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 50 |
| 类型： | 简单复位/加电复位 |
| 监视电压数目： | 1 |
| 输出： | 推挽式，推挽式 |
| 复位： | 高有效/低有效 |
| 复位超时： | 最小为 140 ms |
| 电压 - 阀值： | 2.63V |
| 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： | 管件 |
MAX705–MAX708/MAX813L
Low-Cost, μP Supervisory Circuits
______________________________________________________________Pin Description
PIN
MAX705/MAX706
MAX707/MAX708
MAX813L
NAME
FUNCTION
DIP/SO
μ MAX
DIP/SO
μ MAX
DIP/SO
μ MAX
Manual-Reset Input triggers a reset pulse when
pulled below 0.8V. This active-low input has an inter-
1
3
1
3
1
3
MR
nal 250μA pull-up current. It can be driven from a TTL
or CMOS logic line as well as shorted to ground with
a switch.
2
3
4
5
2
3
4
5
2
3
4
5
V CC
GND
+5V Supply Input
0V Ground Reference for all signals
Power-Fail Voltage Monitor Input. When PFI is less
4
6
4
6
4
6
PFI
than 1.25V, PFO goes low. Connect PFI to GND or
V CC when not used.
5
7
5
7
5
7
PFO
Power-Fail Output goes low and sinks current when
PFI is less than 1.25V; otherwise PFO stays high.
Watchdog Input. If WDI remains high or low for
1.6sec, the internal watchdog timer runs out and
WDO goes low (Figure 1). Floating WDI or connect-
6
8
—
—
6
8
WDI
ing WDI to a high-impedance three-state buffer dis-
ables the watchdog feature. The internal watchdog
timer clears whenever reset is asserted, WDI is three-
stated, or WDI sees a rising or falling edge.
—
—
6
—
—
—
N.C.
No Connect
Active-Low Reset Output pulses low for 200ms when
triggered, and stays low whenever V CC is below the
reset threshold (4.65V in the MAX705 and 4.40V in the
7
1
7
1
—
—
RESET
MAX706). It remains low for 200ms after V CC rises
above the reset threshold or MR goes from low to high
(Figure 3). A watchdog timeout will not trigger RESET
unless WDO is connected to MR .
Watchdog Output pulls low when the internal watch-
dog timer finishes its 1.6sec count and does not go
high again until the watchdog is cleared. WDO also
8
2
—
—
8
2
WDO
goes low during low-line conditions. Whenever V CC is
below the reset threshold, WDO stays low; however,
unlike RESET , WDO does not have a minimum pulse
width. As soon as V CC rises above the reset thresh-
old, WDO goes high with no delay.
Active-High Reset Output is the inverse of RESET .
—
—
8
2
7
1
RESET
Whenever RESET is high, RESET is low, and vice
versa (Figure 2). The MAX813L has a RESET output
only.
Maxim Integrated
5
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX708REUA+ | 功能描述:监控电路 Single uPower Supervisor 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 |
| MAX708REUA+T | 功能描述:监控电路 Single uPower Supervisor 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 |
| MAX708REUA-T | 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 |
| MAX708RMJA | 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 |
| MAX708S | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:+3V Voltage Monitoring, Low-Cost uP Supervisory Circuits |
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