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| 型号： | MAX807NEPE+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 1/16页 |
| 文件大小： | 0K |
| 描述： | IC SUPERVISOR MPU 16-DIP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 25 |
| 类型： | 备用电池电路 |
| 监视电压数目： | 1 |
| 复位： | 高有效/低有效 |
| 复位超时： | 最小为 140 ms |
| 电压 - 阀值： | 4.425V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 通孔 |
| 封装/外壳： | 16-DIP（0.300"，7.62mm） |
| 供应商设备封装： | 16-PDIP |
| 包装： | 管件 |
19-0433; Rev 4; 11/05
Full-Featured μP Supervisory Circuit with
±1.5% Reset Accuracy
General Description
The MAX807 microprocessor (μP) supervisory circuit
reduces the complexity and number of components
needed to monitor power-supply and battery-control func-
tions in μP systems. A 70μA supply current makes the
MAX807 ideal for use in portable equipment, while a 2ns
chip-enable propagation delay and 250mA output current
capability (20mA in battery-backup mode) make it suit-
able for larger, higher-performance equipment.
The MAX807 comes in 16-pin DIP, SO, and TSSOP pack-
ages, and provides the following functions:
? μP reset. The active-low RESET output is asserted dur-
ing power-up, power-down, and brownout conditions,
and is guaranteed to be in the correct state for V CC
down to 1V.
? Active-high RESET output.
? Manual-reset input.
? Two-stage power-fail warning. A separate low-line
comparator compares V CC to a threshold 52mV above
the reset threshold. This low-line comparator is more
accurate than those in previous μP supervisors.
? Backup-battery switchover for CMOS RAM, real-time
clocks, μPs, or other low-power logic.
? Write protection of CMOS RAM or EEPROM.
? 2.275V threshold detector provides for power-fail
warning and low-battery detection, or monitors a
power supply other than +5V.
? BATT OK status flag indicates that the backup-battery
voltage is above +2.275V.
? Watchdog-fault output—asserted if the watchdog input
Features
? Precision 4.675V (MAX807L), 4.425V (MAX807M),
or 4.575V (MAX807N) Voltage Monitoring
? 200ms Power-OK/Reset Time Delay
? RESET and RESET Outputs
? Independent Watchdog Timer
? 1μA Standby Current
? Power Switching
250mA in V CC Mode
20mA in Battery-Backup Mode
? On-Board Gating of Chip-Enable Signals;
2ns CE Gate Propagation Delay
? MaxCap ? and SuperCap ? Compatible
? Voltage Monitor for Power Fail
? Backup-Battery Monitor
? Guaranteed RESET Valid to V CC = 1V
? ±1.5% Low-Line Threshold Accuracy 52mV above
Reset Threshold
Pin Configuration
TOP VIEW
has not been toggled within a preset timeout period.
PFI 1
16 OUT
Computers
Controllers
Intelligent Instruments
Critical μP Power Monitoring
Applications
PFO 2
V CC 3
WDI 4
GND 5
MR 6
LOW LINE
7
MAX807
15 BATT OK
14 BATT
13 BATT ON
12 CE IN
11 CE OUT
10 WDO
Portable/Battery-Powered Equipment
RESET
8
9
RESET
DIP/SO/TSSOP
Ordering Information and Typical Operating Circuit appear at end of data sheet.
SuperCap is a registered trademark of Baknor Industries. MaxCap is a registered trademark of Cesiwid, Inc.
________________________________________________________________ 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.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX807NEPE+ | 功能描述:监控电路 Full-Featured uPower Supervisor 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 |
| MAX807NEUE | 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 |
| MAX807NEUE+ | 功能描述:监控电路 Full-Featured uPower Supervisor 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 |
| MAX807NEUE+T | 功能描述:监控电路 Full-Featured uPower Supervisor 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 |
| MAX807NEUE-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 |
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