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参数资料
| 型号： | MAX807MEUE+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 7/16页 |
| 文件大小： | 0K |
| 描述： | IC SUPERVISOR MPU 16TSSOP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 96 |
| 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： | 4.575V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-TSSOP（0.173"，4.40mm 宽） |
| 供应商设备封装： | 16-TSSOP |
| 包装： | 管件 |
Full-Featured μP Supervisory Circuit with
±1.5% Reset Accuracy
Pin Description
PIN
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
NAME
PFI
PFO
V CC
WDI
GND
MR
LOW LINE
RESET
RESET
WDO
CE OUT
CE IN
BATT ON
BATT
BATT OK
OUT
FUNCTION
Power-Fail Input. When PFI is less than V PFT (2.265V), PFO goes low. Connect to ground when unused.
Power-Fail Output. This CMOS-logic output goes low when PFI is less than V PFT (2.265V). Valid for
V CC ≥ 4V. PFO swings between V CC and GND.
Input Supply Voltage, nominally +5V. Bypass with a 0.1μF capacitor to GND.
Watchdog Input. If WDI remains high or low longer than the watchdog-timeout period (1.6s, typ), WDO
goes low. Leave unconnected to disable the watchdog function.
Ground
Manual-Reset Input. A logic low on MR asserts reset. Reset remains asserted as long as MR remains low
and for 200ms after MR returns high. MR is an active-low input with an internal pullup to V CC . It can be
driven using TTL or CMOS logic, or shorted to ground with a switch. Connect to V CC , or leave uncon-
nected if not used.
Low-Line Comparator Output. This CMOS-logic output goes low when V CC falls to 52mV above the reset
threshold. Use this output to generate an NMI to initiate an orderly shutdown routine when V CC is falling.
LOW LINE swings between V CC and GND.
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.
Active-Low Reset Output. RESET is triggered and stays low when V CC is below the reset threshold or
when MR is low. It remains low 200ms after V CC rises above the reset threshold or MR returns high.
RESET has a strong pulldown but a relatively weak pullup, and can be wire-OR connected to logic gates.
Valid for V CC ≥ 1V. RESET swings between V CC and GND.
Watchdog Output. This CMOS-logic output goes low if WDI remains high or low longer than the watch-
dog-timeout period (t WD ), and remains low until the next transition of WDI. WDO remains high if WDI is
unconnected. WDO is high during reset. WDO swings between V CC and GND. Connect WDO to MR to
generate resets during watchdog faults.
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.
Chip-Enable Input
Battery-On Output. CMOS-logic output/external bypass switch driver. High when OUT is connected to
BATT and low when OUT is connected to V CC . Connect the base of a PNP transistor or gate of a PMOS
transistor to BATT ON for I OUT requirements exceeding 250mA. BATT ON swings between the higher of
V CC and V BATT and GND.
Backup-Battery Input. When V CC falls below the reset threshold and V BATT , OUT switches from V CC to
BATT. V BATT may exceed V CC . The battery can be removed while the MAX807 is powered-up, provided
BATT is bypassed with a 0.1μF capacitor to GND. If no battery is used, connect BATT to ground, and
connect V CC and OUT together.
Battery-OK Signal Output. High in normal operating mode when V BATT exceeds V BOK (2.265V). Valid for
V CC ≥ 4V.
Output Supply Voltage to CMOS RAM. When V CC exceeds the reset threshold or V CC > V BATT , OUT is
connected to V CC . When V CC falls below the reset threshold and V BATT , OUT connects to BATT. Bypass
OUT with a 0.1μF capacitor to GND.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX807MEUE+ | 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 |
| MAX807MEUE+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 |
| MAX807MEUE-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 |
| MAX807MEWE | 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 |
| MAX807MEWE+ | 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 |
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