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| 型号： | MAX6709CUB+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 10/13页 |
| 文件大小： | 0K |
| 描述： | IC VOLT MONITOR QUAD 10-UMAX |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 类型： | 多压监控器 |
| 监视电压数目： | 4 |
| 输出： | 开路漏极或开路集电极 |
| 复位： | 低有效 |
| 复位超时： | 最小 <1 ms |
| 电压 - 阀值： | 1.58V，2.93V，4.38V，可调 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 10-TFSOP，10-MSOP（0.118"，3.00mm 宽） |
| 供应商设备封装： | 10-µMAX |
| 包装： | 带卷 (TR) |
Low-Voltage, High-Accuracy, Quad Voltage
Monitors in μMAX Package
Or, solved in terms of R1:
R1 = R2 ((V INTH / 0.62V) - 1)
V INTH
R1
R2
noisy environment, connecting a 0.1μF capacitor from
MR to GND provides additional noise immunity.
Reseting the μP from a 2nd Voltage
(MAX6714)
The MAX6714 can be configured to assert a reset from a
second voltage by connecting the power-fail output to
manual reset. As the V PFI_ falls below its threshold, PFO
goes low and asserts the reset output for the reset time-
out period after the manual reset input is deasserted.
(See Typical Operating Circuit. )
Power-Supply Bypassing and Grounding
The MAX6709/MAX6714 operate from a single 2.0V to
5.5V supply. In noisy applications, bypass V CC with a
( 0.62V - 1 )
V REF = 0.62V
R1 = R2
V INTH
0.1μF capacitor as close to V CC as possible.
Figure 7. Setting the Auxiliary Monitor
Unused Inputs
The unused inputs (except the adjustable) are internally
connected to ground through the lower resistors of the
threshold-setting resistor pairs. The adjustable input,
however, must be connected to ground if unused.
V CC
V TH_
RESET
V TH_
90%
Reset Output
The MAX6714 RESET output asserts low when V CC
drops below its specified threshold or MR asserts low
t RD
10%
t RP
and remains low for the reset timeout period (140ms
min) after V CC exceeds its threshold and MR deasserts
(Figure 8). The output is open drain with a weak (10μA)
internal pullup to V CC . For many applications, no exter-
nal pullup resistor is required to interface with other
Figure 8. RESET Output Timing Diagram
logic devices. An external pullup resistor to any voltage
from 0 to 5.5V overdrives the internal pullup if interfac-
ing to different logic supply voltages (Figure 9). Internal
V CC = 3.3V
5V
circuitry prevents reverse current flow from the external
pullup voltage to V CC .
V CC
100k ?
V CC
Manual Reset Input
Many μP-based products require manual reset capabili-
ty, allowing the operator, a test technician, or external
logic circuitry to initiate a reset. A logic low on MR
asserts RESET low. RESET remains asserted while MR is
low, and during the reset timeout period (140ms min)
after MR returns high. The MR input has an internal 20k ?
pullup resistor to V CC , so it can be left open if unused.
Drive MR with TTL or CMOS-logic levels, or with open-
drain/collector outputs. Connect a normally open momen-
tary switch from MR to GND to create a manual reset
function; external debounce circuitry is not required. If
MAX6714
GND
RESET
RESET
GND
MR is driven from long cables or if the device is used in a
Figure 9. Interfacing to Different Logic Supply Voltage
10
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX6709DUB | 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 |
| MAX6709DUB+ | 功能描述:监控电路 Quad Voltage Monitor 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 |
| MAX6709DUB+T | 功能描述:监控电路 Quad Voltage Monitor 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 |
| MAX6709DUB-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 |
| MAX6709EUB | 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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