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参数资料
| 型号： | MAX6422US30+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 4/10页 |
| 文件大小： | 0K |
| 描述： | IC MPU/RESET CIRC 3.00V SOT143-4 |
| 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： | 高有效 |
| 复位超时： | 可调节/可选择 |
| 电压 - 阀值： | 3V |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | TO-253-4，TO-253AA |
| 供应商设备封装： | SOT-143-4 |
| 包装： | 带卷 (TR) |
Low-Power, SC70/SOT μP Reset Circuits with
Capacitor-Adjustable Reset Timeout Delay
Pin Description
PIN
MAX6340
SOT23
MAX6421
MAX6422
MAX6423
SOT143
SC70
MAX6424
MAX6425
SOT23
MAX6426
SOT23
NAME
FUNCTION
Set Reset Timeout Input. Connect a capacitor between SRT
1
3
3
5
1
SRT
and ground to set the timeout period. Determine the period as
follows: t RP = 2.73 ? 10 6 ? C SRT + 275μs with t RP in seconds
and C SRT in farads.
2
3
4
1
—
2
2
—
1
3
4
2
2, 3
—
5
GND
N.C.
V CC
Ground
Not Internally Connected. Can be connected to GND.
Supply Voltage and Reset Threshold Monitor Input
RESET changes from high to low whenever V CC drops below
5
1
4
RESET
the selected reset threshold voltage. RESET remains low for
the reset timeout period after V CC exceeds the reset
threshold.
4
4
RESET changes from low to high whenever V CC drops below
—
—
—
RESET
the selected reset threshold voltage. RESET remains high for
the reset timeout period after V CC exceeds the reset
threshold.
Detailed Description
Reset Output
3.3V
The reset output is typically connected to the reset input
of a μP. A μP’s reset input starts or restarts the μP in a
known state. The MAX6340/MAX6421 –MAX6426 μP
supervisory circuits provide the reset logic to prevent
code-execution errors during power-up, power-down,
and brownout conditions (see Typical Operating
V CC
LASER-TRIMMED
RESISTORS
V REF
10k ?
5.0V
Characteristics ).
RESET changes from high to low whenever V CC drops
below the threshold voltage. Once V CC exceeds the
threshold voltage, RESET remains low for the capacitor-
adjustable reset timeout period.
The MAX6422 active-high RESET output is the inverse
C SRT
SRT
RESET
TIMEOUT
MAX6340
MAX6423
MAX6425
MAX6426
RESET
N
GND
5V
SYSTEM
logic of the active-low RESET output. All device outputs
are guaranteed valid for V CC > 1V.
The MAX6340/MAX6423/MAX6425/MAX6426 are open-
drain RESET outputs. Connect an external pullup resis-
tor to any supply from 0 to 5.5V. Select a resistor value
large enough to register a logic low when RESET is
asserted and small enough to register a logic high
while supplying all input current and leakage paths
connected to the RESET line. A 10k ? to 100k ? pullup
is sufficient in most applications.
Figure 1. MAX6340/MAX6423/MAX6425/MAX6426 Open-Drain
RESET Output Allows Use with Multiple Supplies
Selecting a Reset Capacitor
The reset timeout period is adjustable to accommodate
a variety of μP applications. Adjust the reset timeout
period (t RP ) by connecting a capacitor (C SRT ) between
SRT and ground. Calculate the reset timeout capacitor
as follows:
4
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX6422US31 | 制造商:Maxim Integrated Products 功能描述:LOW-POWER SC70/SOT MICROPROCESSOR - Rail/Tube |
| MAX6422US31+ | 制造商:Maxim Integrated Products 功能描述:PROCESSOR SUPERVISOR 3.075V 2.5UA 4PIN SOT-143 - Cut Tape Product |
| MAX6422US31+T | 功能描述:监控电路 Single 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 |
| MAX6422US31-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 |
| MAX6422US32 | 制造商:Maxim Integrated Products 功能描述:LOW-POWER SC70/SOT MICROPROCESSOR - Rail/Tube |
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