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| 型号： | MAX6345ZUT+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 1/8页 |
| 文件大小： | 0K |
| 描述： | IC RESET MPU W/COMP SOT23-6 |
| 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： | 低有效 |
| 复位超时： | 最小为 100 ms |
| 电压 - 阀值： | 2.33V |
| 工作温度： | -40°C ~ 125°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) |
19-1568; Rev 2; 12/05
6-Pin μP Reset Circuit with
Power-Fail Comparator
General Description
The MAX6342–MAX6345 family of microprocessor (μP)
supervisory circuits monitors power supplies in digital sys-
tems. These devices significantly improve system reliabili-
ty and accuracy compared to separate ICs or discrete
components.
The MAX6342–MAX6345 provide factory-trimmed V CC
reset threshold voltages from 2.33V to 4.63V and operate
with supply voltages between +1V and +5.5V. A +1.25V
threshold detector allows for a power-fail warning, for
low-battery detection, or for monitoring another power
supply. The MAX6342 contains an MR input and an
active-low push-pull reset. The MAX6343 and MAX6344
are identical to the MAX6342 except they provide an
active-low, open-drain reset and an active-high, push-
Features
? Small 6-Pin SOT23 Package
? Precision Factory-Set V CC Reset Thresholds
Between 2.33V and 4.63V
? Guaranteed RESET Valid to V CC = +1V
? 100ms min Reset Pulse Width
? Debounced CMOS-Compatible Manual-Reset
Input
? Voltage Monitor for Power-Fail or Low-Battery
Warning
Ordering Information
pull reset, respectively. The MAX6345 provides a second
reset output in place of the MR input to give it an active-
high push-pull reset and an active-low push-pull reset.
All of the devices are packaged in a miniature 6-pin
SOT23.
PART
MAX6342 _UT-T
MAX6343 _UT-T
MAX6344 _UT-T
MAX6345 _UT-T
TEMP RANGE
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
PIN-PACKAGE
6 SOT23-6
6 SOT23-6
6 SOT23-6
6 SOT23-6
Applications
Portable Computers
Telecom Equipment
Networking Equipment
Portable/Battery-Powered Equipment
Multivoltage Systems
Embedded Control Systems
Typical Operating Circuit appears at end of data sheet.
Note: The MAX6342–MAX6345 are available with factory-set
reset thresholds from 2.33V to 4.63V (see Selector Guides 1, 2).
Insert the letter corresponding to the desired nominal reset
threshold into the blank following the part number. There is a
2500 piece order increment required for the SOT package. SOT
Top Marks table appears at end of data sheet.
Devices are available in both leaded and lead-free packaging.
Specify lead-free by replacing “-T” with “+T” when ordering.
Pin Configurations
TOP VIEW
SUFFIX
Selector Guide 1
RESET THRESHOLD (V)
V CC 1
6
RESET (RESET)
L
4.63
GND 2
MAX6342
MAX6343
5
MR
M
4.38
MAX6344
T
3.08
PFI 3
4
PFO
S
2.93
R
2.63
( ) ARE FOR MAX6344 ONLY.
SOT23-6
Z
2.33
Pin Configurations continued at end of data sheet.
Selector Guide 2
PART
MAX6342
MAX6343
MAX6344
MAX6345
PUSH-PULL
RESET OUTPUT
?
—
—
?
OPEN-DRAIN
RESET OUTPUT
—
?
—
—
PUSH-PULL RESET
OUTPUT
—
—
?
?
MANUAL-RESET
INPUT
?
?
?
—
________________________________________________________________ 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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