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参数资料
| 型号： | MAX6445UK16L+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 5/13页 |
| 文件大小： | 0K |
| 描述： | IC MPU RESET 1.575V SOT23-5 |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 1 |
| 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： | 低有效 |
| 复位超时： | 最小为 140 ms |
| 电压 - 阀值： | 1.575V |
| 工作温度： | -40°C ~ 85°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： | MAX6445UK16L+TDKR |
μP Reset Circuits with Long Manual Reset
Setup Period
Pin Description
PIN
MAX6443
MAX6444
1
MAX6445
MAX6446
2
MAX6447
MAX6448
2
MAX6449
MAX6450
2
MAX6451
MAX6452
2
NAME
GND
Ground
FUNCTION
Active-Low Push-Pull or Open-Drain Output. RESET
changes from high to low when V CC or RSTIN drops below
its selected reset threshold and remains low for the 210ms
reset timeout period after all monitored power-supply inputs
2
1
1
1
1
RESET
exceed their selected reset thresholds. RESET is one-shot
pulsed low for the reset timeout period (140ms min) after
selected manual reset inputs are asserted longer than the
specified setup period. For the open-drain output, use a
minimum 20k ? pullup resistor to V CC .
Manual Reset Input, Active Low. Internal 50k ? pullup to
3
—
3
—
3
V CC. Pull MR1 low for the typical input pulse width (t MR )
to one-shot pulse RESET for the reset timeout period.
MR1
Manual Reset Input, Active Low. Pull both MR1 and
—
3
—
3
—
MR2 low for the typical input pulse width (t MR ) to one-
shot pulse RESET for the reset timeout period.
4
4
4
4
4
V CC
V CC Voltage Input. Power supply and input for the
primary microprocessor voltage reset monitor.
Manual Reset Input, Active Low. Internal 50k ? pullup to
—
5
—
6
—
MR2
V CC . Pull both MR1 and MR2 low for the typical input
pulse width (t MR ) to one-shot pulse RESET for the reset
timeout period.
—
—
5
—
6
MR2
Manual Reset Input. Pull the MR2 high to immediately
one-shot pulse RESET for the reset timeout period.
Reset Input. High-impedance input to the adjustable
—
—
—
5
5
RSTIN
reset comparator. Connect RSTIN to the center point of
an external resistor-divider to set the threshold of the
externally monitored voltage.
Detailed Description
Reset Output
The reset output is typically connected to the reset
input of a microprocessor (μP). A μP’s reset input starts
or restarts the μP in a known state. The MAX6443 –
MAX6452 μP supervisory circuits provide the reset
logic to prevent code-execution errors during power-
up, power-down and brownout conditions (see the
Typical Operating Circuit).
RESET changes from high to low whenever the moni-
tored voltages (RSTIN or V CC ) drop below the reset
threshold voltages. Once V RSTIN and V CC exceed their
respective reset threshold voltages, RESET remains low
for the reset timeout period and then goes high. RESET
is one-shot pulsed whenever selected manual reset
inputs are asserted. RESET stays asserted for the nor-
mal reset timeout period (140ms min).
RESET is guaranteed to be in the proper output logic
state for V CC inputs ≥ 1V. For applications requiring valid
reset logic when V CC is less than 1V, see the Ensuring a
Valid RESET Output Down to V CC = 0V section.
_______________________________________________________________________________________
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX6445UK17L | 制造商:Maxim Integrated Products 功能描述:+P RESET CIRCUITS WITH LONG MANUAL - Rail/Tube |
| MAX6445UK17L+ | 制造商:Maxim Integrated Products 功能描述:PROCESSOR SUPERVISOR 1.67V 7UA 5PIN SOT-23 - Rail/Tube |
| MAX6445UK17L+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 |
| MAX6445UK17L-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 |
| MAX6445UK22L | 制造商:Maxim Integrated Products 功能描述:+P RESET CIRCUITS WITH LONG MANUAL - Rail/Tube |
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