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参数资料
| 型号： | MAX6751KA+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 11/14页 |
| 文件大小： | 0K |
| 描述： | IC MPU/RESET CIRC SOT23-8 |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 类型： | 多压监控器 |
| 监视电压数目： | 2 |
| 输出： | 开路漏极或开路集电极 |
| 复位： | 低有效 |
| 复位超时： | 可调节/可选择 |
| 电压 - 阀值： | 可调节/可选择 |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | SOT-23-8 |
| 供应商设备封装： | SOT-23-8 |
| 包装： | 带卷 (TR) |
MAX6746–MAX6753r
μP Reset Circuits with Capacitor-Adjustable
Reset/Watchdog Timeout Delay
Interfacing to Other Voltages for
Logic Compatibility
The open-drain RESET output can be used to interface
to a μP with other logic levels. As shown in Figure 6, the
open-drain output can be connected to voltages from 0
to 6V.
Generally, the pullup resistor connected to the RESET
connects to the supply voltage that is being monitored
at the IC’s V CC pin. However, some systems can use
the open-drain output to level-shift from the monitored
supply to reset circuitry powered by some other supply.
Keep in mind that as the supervisor’s V CC decreases
towards 1V, so does the IC’s ability to sink current at
RESET . Also, with any pullup resistor, RESET is pulled
high as V CC decays toward zero. The voltage where
this occurs depends on the pullup resistor value and
the voltage to which it is connected.
V CC
V CC
MAX6746
MAX6748
MAX6450
MAX6752
RESET
100k Ω
GND
Figure 7. Ensuring RESET Valid to V CC = 0V
Maxim Integrated
Ensuring a Valid RESET Down to V CC = 0V
(Push-Pull RESET )
When V CC falls below 1V, RESET current sinking capabil-
ities decline drastically. The high-impedance CMOS-
logic inputs connected to RESET can drift to undeter-
mined voltages. This presents no problems in most
applications, since most μPs and other circuitry do not
operate with V CC below 1V.
In those applications where RESET must be valid down
to 0V, add a pulldown resistor between RESET and
GND for the MAX6746/MAX6748/MAX6750/MAX6752
push/pull outputs. The resistor sinks any stray leakage
currents, holding RESET low (Figure 7). The value of the
pulldown resistor is not critical; 100k Ω is large enough
not to load RESET and small enough to pull RESET to
ground. The external pulldown can not be used with
the open-drain reset outputs.
11
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX6752KA16 | 制造商:Maxim Integrated Products 功能描述:SINGLE/DUAL-VOLT MICROPROC. RESET C - Cut Tape Product |
| MAX6752KA16+ | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| MAX6752KA16+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 |
| MAX6752KA16-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 |
| MAX6752KA17 | 制造商:Maxim Integrated Products 功能描述:SINGLE/DUAL-VOLT MICROPROC. RESET C - Cut Tape Product |
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