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| 型号： | MAX808LESA+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 7/12页 |
| 文件大小： | 0K |
| 描述： | IC SUPERVISOR MPU 8-SOIC |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 类型： | 备用电池电路 |
| 监视电压数目： | 1 |
| 复位： | 低有效 |
| 复位超时： | 最小为 140 ms |
| 电压 - 阀值： | 4.675V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 8-SOIC |
| 包装： | 带卷 (TR) |
8-Pin μP Supervisory Circuits
with ±1.5% Reset Accuracy
_________________________________________________Pin Description (continued)
MAX801
5
—
PIN
MAX808
—
5
NAME
RESET
CE OUT
FUNCTION
Active-High Reset Output. RESET is the inverse of RESET . It is a CMOS output that
sources and sinks current. RESET swings between V CC and GND.
Chip-Enable Output. Output to the chip-enable gating circuit. CE OUT is pulled up to
the higher of V CC or V BATT when the chip-enable gate is disabled.
Watchdog Input. If WDI remains high or low longer than the watchdog timeout period
6
—
WDI
(typically 1.6sec), RESET will be asserted for 200ms. Leave unconnected to disable the
watchdog function.
—
6
CE IN
Chip-Enable Input
Backup-Battery Input. When V CC falls below the reset threshold and V BATT , OUT switch-
7
7
BATT
es from V CC to BATT. V BATT may exceed V CC . The battery can be removed while the
MAX801/MAX808 is powered up, provided BATT is bypassed with a 0.1μF capacitor to
GND. If no battery is used, connect BATT to ground and V CC to OUT.
Output Supply Voltage to CMOS RAM. When V CC exceeds the reset threshold or V BATT ,
8
8
OUT
OUT connects to V CC . When V CC falls below the reset threshold and V BATT , OUT con-
nects to BATT. Bypass OUT with a 0.1μF capacitor to GND.
V CC
BATT
BATTERY-BACKUP
COMPARATOR
MAX801
MAX808
OUT
LOWLINE
RESET
COMPARATOR
WATCHDOG
TRANSITION
WDI
MAX801 ONLY
DETECTOR
LOW-LINE
COMPARATOR
STATE
RESET (MAX801 ONLY)
GND
CE IN
2.275V
OSCILLATOR
P
MACHINE
THE HIGHER
OF V CC
OR V BATT
P
RESET
CE OUT
MAX808 ONLY
N
Figure 1. Functional Diagram
_______________________________________________________________________________________
7
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX808LMJA | 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 |
| MAX808M | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Dual Universal Switched Capacitor Filter[MF10/MF10BJ/MF10BN/MF10BWP/MF10BWP-T/MF10CC/D/MF10CJ/MF10CN/MF10CWP/MF10CWP-T ] |
| MAX808MCPA | 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 |
| MAX808MCPA+ | 功能描述:监控电路 8-Pin 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 |
| MAX808MCSA | 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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