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参数资料
| 型号： | MAX6807US46+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 4/13页 |
| 文件大小： | 0K |
| 描述： | IC VOLT DETECTOR 4.6V SOT143-4 |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 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： | 标准为 30 µs |
| 电压 - 阀值： | 4.6V |
| 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： | 带卷 (TR) |
Voltage Detectors
_______________Detailed Description
Reset Output
The MAX6806 voltage detector features an active-low,
push-pull RESET output, while the MAX6807 features
an active-high, push-pull RESET output. Unlike micro-
processor (μP) supervisory circuits that offer a reset
timeout period, the MAX6806 and MAX6807 RESET
goes high and RESET goes low virtually immediately
once V CC exceeds the reset threshold. If a brownout
occurs (V CC falls below the reset threshold), RESET
goes low and RESET goes high. RESET is guaranteed
to be a logic low for V CC ≥ 1V and RESET is guaran-
teed to be a logic high for V CC ≥ 1.2V.
The MAX6808 features an active-low, open-drain RESET
output. The output sinks current when V CC falls below
the reset threshold. Connect a pull-up resistor from
RESET to any supply voltage up to 6V (Figure 1). Select
a resistor value large enough to provide a logic low and
small enough to provide a logic high while supplying all
input and leakage currents connected to the RESET
line. A 100k ? resistor is sufficient in applications driving
high-impedance loads.
The manual reset input (MR, 4-pin SOT143 package)
can also initiate a reset (see Manual Reset Input sec-
tion).
Manual Reset Input
Many applications require manual-reset capabilities,
allowing an operator, a test technician, or external logic
circuitry to initiate a reset. A logic high on MR asserts a
reset and remains asserted while MR is high. This input
has an 80k ? pull-down resistor, so the input may be left
unconnected if not used. Connect a normally open
momentary switch from MR to V CC to create a manual-
reset function. If MR is driven from long cables or if the
device is used in a noisy environment, connecting a
0.1μF capacitor from MR to ground provides noise
immunity.
Hysteresis
The MAX6806/MAX6807/MAX6808 feature internal hys-
teresis that creates two trip points: one for the rising
supply voltage and one for the falling supply voltage
(Figure 2). The hysteresis prevents the output from oscil-
lating (chattering) when V CC is near the reset threshold.
Reset Threshold Accuracy
The MAX6806/MAX6807/MAX6808 are ideal for sys-
tems using a 5V ±5%, 3V ±5%, or 2.5V ±5% power
supply with ICs specified for 5V ±10%, 3V ±10%, or
2.5V ±10%, respectively. The reset is guaranteed to
assert after the power supply falls out of regulation, but
before power drops below the minimum specified oper-
ating voltage range for the system ICs.
+3.3V
+5.0V
V TH+
HYST
V HYST = V TH+ - V TH-
V CC
V CC
V TH-
MAX6808
100k ?
5V SYSTEM
V OH
RESET
(MAX6806/MAX6808)
GND
RESET
GND
RESET
V OL
V OH
(MAX6807)
V OL
Figure 1. The MAX6808 open-drain RESET output allows use
with multiple supplies.
Figure 2. Input and Output Waveforms with V CC Varied
4
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX6807XR26 | 制造商:Maxim Integrated Products 功能描述:VOLTAGE DETECTOR WITH ACTIVE-HIGH P - Rail/Tube |
| MAX6807XR26+ | 制造商:Maxim Integrated Products 功能描述:VOLT SUPERVISOR DETECT 2.6V 3PIN SC-70 - Cut Tape Product |
| MAX6807XR26+T | 功能描述:监控电路 Single uPower 2.3V 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 |
| MAX6807XR26-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 |
| MAX6807XR46 | 制造商:Maxim Integrated Products 功能描述:VOLTAGE DETECTOR WITH ACTIVE-HIGH P - Rail/Tube 制造商:Rochester Electronics LLC 功能描述: |
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