参数资料
型号: LTC1232IN8#PBF
厂商: LINEAR TECHNOLOGY CORP
元件分类: 电源管理
英文描述: 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDIP8
封装: 0.300 INCH, PLASTIC, DIP-8
文件页数: 1/8页
文件大小: 97K
代理商: LTC1232IN8#PBF
1
LTC1232
1232fa
Guaranteed Reset Assertion at VCC = 1V
8-Pin SO Plastic Package
2.0mA Maximum Supply Current
4.62V/4.37V Precision Voltage Monitor
Power OK/Reset Time Delay: 600ms
Minimum External Component Count
Superior Upgrade for DS1232
Critical P Power Monitoring
Intelligent Instruments
Computers and Controllers
Automotive Systems
Microprocessor
Supervisory Circuits
RST Output Voltage vs
Supply Voltage
FEATURES
APPLICATIO S
U
DESCRIPTIO
U
, LTC and LT are registered trademarks of Linear Technology Corporation.
LTC1232 TA02
SUPPLY VOLTAGE (V)
0
RST
OUTPUT
VOLTAGE
(V)
3
4
5
4
2
1
0
1
2
3
5
The LTC
1232 provides power supply monitoring,
watchdog timing and external reset for microprocessor
systems. A precise internal voltage reference and
comparator circuit monitor the power supply line. When
an out-of-tolerance condition occurs, the reset outputs
are forced to active states. The RST output is guaranteed
to remain logic low even with VCC as low as 1V.
The LTC1232 has an internal watchdog timer which forces
the reset outputs to active states when the Strobe input is
not forced low prior to a preset time-out period. The
watchdog timing can be set to operate on time-out periods
of typically 150ms, 600ms or 1.2 seconds.
The LTC1232 performs push-button reset control.
The LTC1232 debounces the push-button input
and guarantees an active reset pulse width of 250ms
minimum.
TYPICAL APPLICATIO
U
100k
5V DC
I/O LINE
MPU
(e.g. 6805)
RESET
LTC1232 TA01
LTC1232
PB RST
TD
TOL
GND
VCC
ST
RST
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