M
Features
TC1272/TC1273/TC1274
General Description
The TC1272/TC1273/TC1274 are cost-effective
system supervisor 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 20 碌sec of V
CC
falling through the reset voltage threshold. RESET is
maintained active for a minimum of 100 msec after
V
CC
rises above the reset threshold. The TC1274 has
an active-high RESET output, while the TC1272 and
TC1273 have an active-low RESET output. The
TC1272 and TC1274 each have a complimentary out-
put, while the TC1273 has an open-drain output. The
output of the TC1272 and TC1273 is valid down to V
CC
= 1.2V. The TC1274 is valid down to V
CC
= 1.8V. All
three devices are available in a 3-Pin SOT-23B
package.
The TC1272/TC1273/TC1274 devices are optimized to
reject fast transient glitches on the V
CC
line.
3-Pin Reset Monitors for 5V Systems
鈥?Precision V
CC
Monitor for 5.0V Systems
鈥?100 msec Minimum RESET, RESET Output
Duration
鈥?Output Valid to V
CC
= 1.2V
鈥?V
CC
Transient Immunity
鈥?Small 3-Pin SOT-23B Package
鈥?No External Components
Applications
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
Computers
Embedded Systems
Battery-Powered Equipment
Critical 碌P Power Supply Monitoring
Package Type
3-Pin SOT-23B*
RESET
**(RESET)
1
Typical Operating Circuit
TC1272
TC1273
TC1274
V
CC
3
GND
2
V
CC
RESET
1
V
CC
RESET
Input
V
CC
2
TC1272
* 3-Pin SOT-23B is equivalent to JEDEC TO-236
**( ) is for TC1274
GND
3
Processor
GND
錚?/div>
2003 Microchip Technology Inc.
DS21382B-page 1
TC1274 PDF文件相關(guān)型號
TC1275,TC1276
TC1274相關(guān)型號PDF文件下載
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型號
版本
描述
廠商
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