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参数资料
| 型号： | MAX6418UK16+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 6/12页 |
| 文件大小： | 0K |
| 描述： | IC RESET MPU LOW PWR SOT23-5 |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 1 |
| 类型： | 多压监控器 |
| 监视电压数目： | 2 |
| 输出： | 推挽式，图腾柱 |
| 复位： | 低有效 |
| 复位超时： | 可调节/可选择 |
| 电压 - 阀值： | 1.575V，可调 |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | SC-74A，SOT-753 |
| 供应商设备封装： | SOT-23-5 |
| 包装： | 标准包装 |
| 其它名称： | MAX6418UK16+TDKR |
MAX6412–MAX6420
Low-Power, Single/Dual-Voltage μP Reset Circuits
with Capacitor-Adjustable Reset Timeout Delay
Use the following formula to calculate the externally
monitored voltage (V MON_TH ):
V MON_TH = V RST (R1 + R2)/R2
where V MON_TH is the desired reset threshold voltage
and V RST is the reset input threshold (1.26V). Resistors
R1 and R2 can have very high values to minimize cur-
R1
V CC
rent consumption due to low leakage currents. Set R2
to some conveniently high value (1M ? , for example)
and calculate R1 based on the desired monitored volt-
RESET IN
V CC
age, using the following formula:
R1 = R2 x (V MON_TH /V RST - 1) ( ? )
Manual Reset Input
(MAX6412/MAX6413/MAX6414)
Many μP-based products require manual reset capabil-
ity, allowing the operator, a technician, or external logic
circuitry to initiate a reset. A logic low on MR asserts
reset. Reset remains asserted while MR is low and for
the reset timeout period after MR returns high.
R2
GND
SRT
MAX6415–
MAX6420
The MR has an internal 20k ? pullup resistor so it can
be left open if not used. Connect a normally open
momentary switch from MR to ground to create a man-
ual reset function (external debounce circuitry is not
required for long reset timeout periods).
A manual reset option can easily be implemented with the
MAX6415–MAX6420 by connecting a normally open
momentary switch in parallel with R2 (Figure 2). When the
switch is closed, the voltage on RESET IN goes to zero,
initiating a reset. Similar to the MAX6412/MAX6413/
MAX6414 manual reset, reset remains asserted while the
switch is closed and for the reset timeout period after the
switch is opened.
Figure 2. Adding an External Manual Reset Function to the
MAX6415–MAX6420
Monitoring Voltages Other than V CC
(MAX6415/MAX6416/MAX6417)
The MAX6415/MAX6416/MAX6417 contain an adjustable
reset threshold input. These devices can be used to
monitor voltages other than V CC . Calculate V MON_TH as
shown in the Reset Threshold section. (See Figure 3.)
V MON_TH
R1
V MON_TH
R1
V CC
RESET IN
V CC
RESET IN
V CC
R2
GND
MAX6415
MAX6416
MAX6417
R2
GND
MAX6415
MAX6416
MAX6417
SRT
V MON_TH = 1.26 x (R1 + R2)/R2
SRT
Figure 1. Calculating the Monitored Threshold Voltage (V MON_TH )
6
Figure 3. Monitoring External Voltages
Maxim Integrated
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX6418UK17 | 制造商:Maxim Integrated Products 功能描述:LOW-PWR SNGL/DUAL-VLTAGE MICROPROC - Cut Tape Product |
| MAX6418UK17+ | 制造商:Maxim Integrated Products 功能描述:PROCESSOR SUPERVISOR 1.665V/ADJV 2.7UA 5PIN SOT-23 - Cut Tape Product |
| MAX6418UK17+T | 功能描述:监控电路 Dual uPower Reset Circuit 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 |
| MAX6418UK17-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 |
| MAX6418UK18 | 制造商:Maxim Integrated Products 功能描述:LOW-PWR SNGL/DUAL-VLTAGE MICROPROC - Rail/Tube |
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