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TC1271

更新时间： 2024-11-27 22:39:47
品牌 Logo 应用领域
美国微芯 - MICROCHIP 监视器
页数 文件大小 规格书
12页 468K
描述
4-Pin レP Reset Monitors

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中文翻译

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TC1271 数据手册

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TC1270/TC1271  
4-Pin µP Reset Monitors  
Features  
Package Type  
• Precision V Monitor for 1.8V, 2.7V, 3.0V, 3.3V  
and 5.0V Nominal Supplies  
4-Pin SOT-143  
CC  
• Manual Reset Input  
V
4
3
CC  
• 140msec Minimum RESET, RESET Output  
Duration  
1
2
GND  
TC1270  
TC1271  
• RESET Output Valid to V = 1.0V (TC1270)  
CC  
• Low 7µA Supply Current  
• V Transient Immunity  
CC  
MR  
TC1270 RESET  
TC1271 (RESET)  
• Small 4-Pin SOT-143 Package  
• No External Components  
• Replacement for MAX811/812 and Offers a Lower  
Threshold Voltage Option  
General Description  
The TC1270 and TC1271 are cost-effective system  
supervisor circuits designed to monitor V in digital  
Applications  
CC  
• Computers  
systems and provide a reset signal to the host  
processor when necessary. A manual reset input is  
provided to override the reset monitor, and is suitable  
• Embedded Systems  
• Battery Powered Equipment  
• Critical µP Power Supply Monitoring  
for use as  
a
push-button reset. No external  
components are required.  
The reset output is driven active within 20µsec (4µsec  
Device Selection Table  
for F version) of V falling through the reset voltage  
CC  
Part Number  
Package  
Temp. Range  
threshold. RESET is maintained active for a minimum  
of 140msec after V rises above the reset threshold.  
The TC1271 has an active-high RESET output while  
the TC1270 has an active-low RESET output. The  
CC  
TC1270xERC  
TC1271xERC  
4-Pin SOT-143 -40°C to +85°C  
4-Pin SOT-143 -40°C to +85°C  
output of the TC1270 is valid down to V = 1V. Both  
devices are available in a 4-Pin SOT-143 package.  
CC  
NOTE: “x” denotes a suffix for VCC threshold (see table  
below)  
The TC1270/TC1271 devices are optimized to reject  
Suffix*  
Reset V Threshold (V)  
CC  
fast transient glitches on the V  
line. Low supply  
CC  
current of 7µA (V  
= 3.3V) makes these devices  
suitable for battery powered applications.  
L
M
T
4.63  
4.38  
3.08  
2.93  
2.63  
1.75  
CC  
Typical Operating Circuit  
S
R
F
V
CC  
V
V
CC  
CC  
Processor  
*Custom thresholds available, contact factory.  
RESET  
Input  
MR  
RESET  
Push-  
Button  
(Active Low)  
TC1270  
GND  
GND  
2002 Microchip Technology Inc.  
DS21381B-page 1  
1234567...12

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