参数资料
型号: TC1279-15ENB
厂商: Microchip Technology Inc.
英文描述: 3-Pin Reset Monitors for 5V Systems
中文描述: 3引脚复位监控器的5V系统
文件页数: 1/12页
文件大小: 424K
代理商: TC1279-15ENB
2002 Microchip Technology Inc.
DS21384B-page 1
TC1278/TC1279
3-Pin Reset Monitors for 5V Systems
Features
Precision V
CC
Monitor for 5.0V System Supplies
250msec Minimum RESET Output Duration
Output Valid to V
CC
= 1.2V
V
CC
Transient Immunity
Small 3-Pin SOT-23B Package
No External Components
Applications
Computers
Embedded Systems
Battery Powered Equipment
Critical
μ
P Power Supply Monitoring
Device Selection Table
NOTE:
“x” denotes a suffix for V
CC
threshold (see table below).
Package Type
General Description
The TC1278/TC1279 are cost-effective system super-
visor circuits designed to monitor V
CC
in digital systems
and provide a reset signal to the host processor when
necessary. No external components are required.
The reset output is driven active within 5
μ
sec of V
CC
falling through the reset voltage threshold. RESET is
maintained active for a minimum of 250msec after V
CC
rises above the reset threshold. The TC1278 has an
active-high RESET output while the TC1279 has an
active-low RESET output, and both devices have an
open drain output stage. The output is valid down to
V
CC
= 1.2V. Both devices are available in a 3-Pin SOT-
23B package.
Typical Operating Circuit
Part
Number
Order
Package
Temp.
Range
TC1278-xENB
Open Drain
3-Pin SOT-23B
-40°C to +85°C
TC1279-xENB
Open Drain
3-Pin SOT-23B
-40°C to +85°C
Suffix
Reset V
CC
Threshold (V)
4.625
4.375
4.125
5
10
15
V
CC
RESET
GND
TC1278-xENB
TC1279-xENB
1
2
3
NOTE:
3-Pin SOT-23B is equivalent to JEDEC TO-236
3-Pin SOT-23B
TC1279
V
CC
V
CC
V
CC
RESET
RESET
Input
GND
GND
Processor
1
2
3
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相关代理商/技术参数
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