参数资料
型号: TCM812FERCTR
厂商: Microchip Technology
文件页数: 1/16页
文件大小: 0K
描述: IC RESET MONITOR 1.75V SOT143-4
标准包装: 3,000
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: 高有效
复位超时: 最小为 140 ms
电压 - 阀值: 1.75V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: TO-253-4,TO-253AA
供应商设备封装: SOT-143
包装: 带卷 (TR)
TCM811/TCM812
4-Pin Reset Monitors
Features
? Precision V DD Monitor for 2.0V, 2.8V, 3.0V, 3.3V,
5.0V Nominal Supplies
? Manual Reset Input
? 140 ms Minimum RESET Output Duration
? RESET Output Valid to V DD = 1.0V (TCM811)
? Low 6 μA (typ.) Supply Current
? V DD Transient Immunity
? Small 4-Pin SOT-143 Package
? No External Components
? Replacement for MAX811/812 and Offers a Lower
Threshold Voltage Option
? Push-Pull RESET Output
? Temperature Range:
- Commercial (C) -40°C to +85°C
Applications
? Computers
? Embedded Systems
General Description
The TCM811 and TCM812 are cost effective system
supervisory circuits designed to monitor V DD in digital
systems and provide a reset signal to the host
controller 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 μs (5 μs for
F version) of V DD falling through the reset voltage
threshold. RESET is maintained active for a minimum
of 140 ms after V DD rises above the reset threshold.
The TCM812 has an active high RESET output while
the TCM811 has an active low RESET output. The
output of the TCM811 is valid down to V DD = 1V. Both
devices are available in a 4-Pin SOT-143 package,
specified with a temperature range of -40°C to +85°C.
The TCM811/TCM812 are optimized to reject fast
transient glitches on the V DD line. A low supply current
of 6 μA (V DD = 3.3V) makes these devices ideal for
battery powered applications.
?
?
Battery Powered Equipment
Critical Microcontroller Power Supply Monitoring
Package Types:
Typical Application Circuit
SOT-143
V DD
0.1μF
4
V DD
TCM811
V DD
PIC
Microcontroller
GND 1
4
V DD
3 MR
PUSH
BUTTON
RESET
2
RESET
INPUT
(Active Low)
TCM811 RESET
TCM812 (RESET)
2
3
MR
GND
? 2007 Microchip Technology Inc.
GND
DS21615C-page 1
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