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| 型号： | MAX812TEUS+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 1/8页 |
| 文件大小： | 0K |
| 描述： | IC VOLT MON W/RESET SOT143-4 |
| 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： | 高有效 |
| 复位超时： | 最小为 140 ms |
| 电压 - 阀值： | 3.08V |
| 工作温度： | -40°C ~ 85°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： | 标准包装 |
| 产品目录页面： | 1413 (CN2011-ZH PDF) |
| 其它名称： | MAX812TEUS+TDKR |
19-0411; Rev 4; 12/05
4-Pin μP Voltage Monitors
with Manual Reset Input
________________General Description
The MAX811/MAX812 are low-power microprocessor
(μP) supervisory circuits used to monitor power sup-
plies in μP and digital systems. They provide excellent
circuit reliability and low cost by eliminating external
components and adjustments when used with 5V-
powered or 3V-powered circuits. The MAX811/MAX812
also provide a debounced manual reset input.
These devices perform a single function: They assert a
reset signal whenever the V CC supply voltage falls
below a preset threshold, keeping it asserted for at
least 140ms after V CC has risen above the reset thresh-
old. The only difference between the two devices is that
the MAX811 has an active-low RESET output (which is
guaranteed to be in the correct state for V CC down to
1V), while the MAX812 has an active-high RESET out-
put. The reset comparator is designed to ignore fast
____________________________Features
? Precision Monitoring of 3V, 3.3V, and 5V
Power-Supply Voltages
? 6 μ A Supply Current
? 140ms Min Power-On Reset Pulse Width;
R E S E T Output (MAX811), RESET Output (MAX812)
? Guaranteed Over Temperature
? Guaranteed R E S E T Valid to V CC = 1V (MAX811)
? Power-Supply Transient Immunity
? No External Components
? 4-Pin SOT143 Package
_______________Ordering Information
transients on V CC . Reset thresholds are available for
operation with a variety of supply voltages.
PART *
MAX811_EUS-T
TEMP RANGE
-40°C to +85°C
PIN-PACKAGE
4 SOT143
Low supply current makes the MAX811/MAX812 ideal
MAX812_EUS-T -40°C to +85°C
4 SOT143
for use in portable equipment. The devices come in a
4-pin SOT143 package.
________________________Applications
Computers
Controllers
Intelligent Instruments
*This part offers a choice of five different reset threshold volt-
ages. Select the letter corresponding to the desired nominal
reset threshold voltage, and insert it into the blank to complete
the part number.
Devices are available in both leaded and lead-free packaging.
Specify lead-free by replacing “-T” with “+T” when ordering.
RESET THRESHOLD
SUFFIX VOLTAGE (V)
Critical μP and μC Power Monitoring
Portable/Battery-Powered Equipment
L
M
T
S
R
4.63
4.38
3.08
2.93
2.63
___________Typical Operating Circuit
V CC
___________________Pin Configuration
TOP VIEW
MR
V CC
MAX811
MAX812
RESET
(RESET)
RESET
INPUT
V CC
μ P
GND
(RESET) RESET
1
2
MAX811
MAX812
4
3
V CC
MR
GND
GND
SOT143
PUSHBUTTON
SWITCH
( ) ARE FOR MAX812
( ) ARE FOR MAX812
NOTE: SEE LAST PAGE FOR MARKING INFORMATION.
________________________________________________________________ Maxim Integrated Products
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
1
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| MAX813LC/D | 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 |
| MAX813LC/D+ | 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 |
| MAX813LCPA | 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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