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参数资料
| 型号： | TC1271MERC |
| 元件分类： | 电源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO4 |
| 封装： | SOT-143, 4 PIN |
| 文件页数： | 1/6页 |
| 文件大小： | 55K |
| 代理商： | TC1271MERC |
TC1270
TC1271
TC1270/1-1
9/15/99 TelCom reserves the right to make changes in the circuitry and specifications of its devices.
GENERAL DESCRIPTION
The TC1270 and TC1271 are cost-effective system
supervisor circuits designed to monitor VCC in digital sys-
tems 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 for use as a push-button reset.
No external components are required.
The reset output is driven active within 20
sec (4sec
for F version) of VCC falling through the reset voltage
threshold. RESET is maintained active for a minimum of 140
msec after VCC rises above the reset threshold. The TC1271
has an active-high RESET output while the TC1270 has an
active-low RESET output. The output of the TC1270 is
guaranteed valid down to VCC = 1V. Both devices are
available in a 4-Pin SOT-143 package.
The TC1270/1 are optimized to reject fast transient
glitches on the VCC line. Low supply current of 7 A (VCC =
3.3V) makes these devices suitable for battery powered
applications.
4-PIN
P RESET MONITORS
FEATURES
s
Precision VCC Monitor for 1.8V, 2.7V, 3.0V, 3.3V, 5.0V
Nominal Supplies
s
Manual Reset Input
s
140msec Guaranteed Minimum RESET, RESET
Output Duration
s
RESET Output Guaranteed to VCC = 1.0V (TC1270)
s
Low 7
A Supply Current
s
VCC Transient Immunity
s
Small SOT-143-4 Package
s
No External Components
s
Replacement for MAX811/812 and Offers a Lower
Threshold Voltage Option
TYPICAL APPLICATIONS
s
Computers
s
Embedded Systems
s
Battery Powered Equipment
s
Critical
P Power Supply Monitoring
TYPICAL OPERATING CIRCUIT
ORDERING INFORMATION
Part No.
Package
Temp. Range
TC1270xERC
4-Pin SOT-143
– 40
°C to +85°C
TC1271xERC
4-Pin SOT-143
– 40
°C to +85°C
NOTE: The "x" denotes a suffix for VCC threshold - see table below.
PIN CONFIGURATION
Suffix*
Reset VCC Threshold (V)
L
4.63
M
4.38
T
3.08
S
2.93
R
2.63
F
1.75
4-Pin SOT-143
*(Custom thresholds available, contact factory.)
TC1270
VCC
RESET
INPUT
(Active Low)
GND
PROCESSOR
MR
PUSH-
BUTTON
VCC
TC1270 RESET
GND
TC1270
TC1271
1
2
TC1271 (RESET)
3
4
MR
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TC1271MERCTR | 功能描述:监控电路 4-Pin uP 4.38V Reset 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 |
| TC1271RERC | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:4-Pin レP Reset Monitors |
| TC1271RERCTR | 功能描述:监控电路 4-Pin uP 2.63V Reset 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 |
| TC1271SERC | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:4-Pin レP Reset Monitors |
| TC1271SERCTR | 功能描述:监控电路 4-Pin uP 2.93V Reset 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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