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| 型号： | MAX8215ESD+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 9/12页 |
| 文件大小： | 0K |
| 描述： | IC MONITOR VOLT MPU 14-SOIC |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 50 |
| 类型： | 多压监控器 |
| 监视电压数目： | 5 |
| 输出： | 开路漏极或开路集电极 |
| 复位超时： | 标准传输延迟为 20 µs |
| 电压 - 阀值： | ±5V，±12V，可调 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 14-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 14-SOIC |
| 包装： | 管件 |
| 产品目录页面： | 1419 (CN2011-ZH PDF) |
±5V, ±12V (±15V) Dedicated
Microprocessor Voltage Monitors
+5V
V+
1k
1k
0.1 μ F
8
0.1 μ F
14
V DD
OUT1
13
2 GND
PGND
V DD
14
680k
680k
MAX8215
MAX8216
+V S
3
+5V
MAX8215
MAX8216
OUT1
13
7
DIN
DOUT
9
RESET
Figure 8. Alternate Bypass Scheme
1 μ F
Figure 7. Microprocessor Reset Circuit Monitoring Its Own
Supply Voltage
V IN
7
DIN
MAX8215
MAX8216
DOUT
9
absolute maximum ratings have no effect on the refer-
ence. Within the absolute maximum ratings, the DIN
input has no effect on the reference.
Power-Supply Bypassing and Grounding
In high-noise environments where the voltage connected
to V DD may change abruptly, the reference voltage may
“bounce,” causing false comparator outputs. Eliminate
this problem using Figure 8’s RC bypass network.
Although bypassing the reference may appear to help,
Figure 8’s solution is recommended; bypassing the ref-
erence reduces its voltage change, but doing so caus-
es a time delay prior to the reference voltage returning
to its correct level.
Eliminating Output Oscillation when
Using the Auxiliary Comparator
Although hysteresis is built into the auxiliary comparator,
output oscillation problems are still possible. Oscillation
can occur when a comparator’s output couples back to
its inverting input through stray board capacitance.
Make sure the board trace leading from the comparator
output does not pass near its inverting input (or vice
versa). Also, reducing the resistance connected to DIN
reduces its susceptibility to picking up output signals. In
Figure 9. Alternative Means for Reducing Impedance Level
Seen at DIN
most cases, using input resistor values on the order of
100k ? creates no problem. Since using lower resistor
values increases the supply current, another approach
is to bypass the input resistors as shown in Figure 9,
although this slows the circuit’s response. When much
larger valued input resistors are used, high valued resis-
tors on the output should be used.
When DOUT is required to sink larger currents (i.e.,
when smaller pull-up resistor values are used), oscilla-
tion problems are more likely to occur. To minimize
power consumption and to optimize stability, use the
largest value pull-up resistor feasible for the output
drive required. When lower pull-up resistor values are
used, lower values for the resistors connected to the
inputs can help alleviate oscillation problems.
_______________________________________________________________________________________
9
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX8215ESD+ | 功能描述:监控电路 5/12/15V +/-Dedictd MPU Voltage Monitor 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 |
| MAX8215ESD+T | 功能描述:监控电路 5/12/15V +/-Dedictd MPU Voltage Monitor 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 |
| MAX8215ESD-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 |
| MAX8215-MAX8216 | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:【5V, 【12V (【15V) Dedicated Microprocessor Voltage Monitors |
| MAX8215MJD | 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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