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| 型号： | MAX6339PUT+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 1/9页 |
| 文件大小： | 0K |
| 描述： | IC SUPERVISOR MPU QUAD SOT23-6 |
| 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： | 最小为 140 ms |
| 电压 - 阀值： | 3.08V，4.63V，可调，-4.63V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | SOT-23-6 |
| 供应商设备封装： | SOT-6 |
| 包装： | 带卷 (TR) |
19-1756; Rev 3; 12/05
Quad Voltage μP Supervisory Circuit
in SOT Package
General Description
The MAX6339 is a precision quad voltage monitor with
microprocessor (μP) supervisory reset timing. The device
can monitor up to four system supply voltages without
any external components and asserts a single reset if any
supply voltage drops below its preset threshold. The
device significantly reduces system size and component
count while improving reliability compared to separate
ICs or discrete components.
A variety of factory-trimmed threshold voltages are avail-
able to accommodate different supply voltages and toler-
ances with minimal external component requirements.
The selection includes internally fixed options for monitor-
ing +5.0V, +3.3V, +3.0V, +2.5V, +1.8V, and -5.0V sup-
plies with -5% and/or -10% tolerances. The device is also
available with one or two user-adjustable threshold
options if non-standard thresholds are desired (use exter-
nal resistor-divider network).
The quad monitor provides a single active-low reset out-
put that is asserted when any monitored input is below its
associated threshold. The output is open drain with a
weak internal pullup (10μA) to IN2. Reset remains low for
a reset timeout period (140ms min) after all voltages are
above the selected thresholds. The output is valid as long
as either the IN1 or IN2 input voltage remains > 1V.
Features
? Monitors Four Power-Supply Voltages
? Precision Factory-Set Reset Threshold Options
for +5.0V, +3.3V, +3.0, +2.5V, +1.8V, and -5.0V
Supplies
? User-Adjustable Voltage Monitoring Threshold
Options
? Low 55μA Supply Current
? Open-Drain RESET Output with 10μA Internal
Pullup
? 140ms (min) Reset Timeout Period
? RESET Valid to IN1 = 1V or IN2 = 1V
? Immune to Short Monitored Supply Transients
? No External Components Required
? Guaranteed from -40°C to +85°C
? Small 6-Pin SOT23 Package
Ordering Information
The MAX6339 is available in a small 6-pin SOT23 pack-
age and operates over the extended (-40°C to +85°C)
PART
MAX6339_UT-T*
TEMP. RANGE
-40 ° C TO +85 ° C
PIN-PACKAGE
6 SOT23-6
temperature range.
________________________Applications
Telecommunications
High-End Printers
Desktop and Network Computers
Data Storage Equipment
Networking Equipment
Industrial Equipment
Set-Top Boxes
* Insert the desired letter from the Selector Guide into the blank
to complete the part number. There is a 2500 piece minimum
order increment requirement on the SOT package and these
devices are available in tape-and-reel only.
Devices are available in both leaded and lead-free packaging.
Specify lead-free by replacing “-T” with “+T” when ordering.
Typical Operating Circuit
IN1
MAX6339
SUPPLIES
TO BE
MONITORED
IN2
IN3
RESET
μ P
IN4
GND
Pin Configuration appears at end of data sheet.
________________________________________________________________ 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.
1
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