参数资料
型号: LTC699IN8#PBF
厂商: Linear Technology
文件页数: 1/4页
文件大小: 0K
描述: IC MPU SUPERVISORY CIRCUIT 8-DIP
标准包装: 50
类型: 简单复位/加电复位
监视电压数目: 1
输出: 开路漏极或开路集电极
复位: 低有效
复位超时: 最小为 140 ms
电压 - 阀值: 4.65V
工作温度: -40°C ~ 85°C
安装类型: 通孔
封装/外壳: 8-DIP(0.300",7.62mm)
供应商设备封装: 8-PDIP
包装: 管件
LTC699
Microprocessor
Supervisory Circuit
FEATURE S
D ESCRIPTIO
s
s
s
s
s
s
s
s
Guaranteed Reset Assertion at V CC = 1V
1.5mA Maximum Supply Current
SO-8 Packaging
4.65V Precision Voltage Monitor
Power OK/Reset Time Delay: 200ms
Minimum External Component Count
Performance Specified Over Temperature
Superior Upgrade for MAX699
The LTC699 provides power supply monitoring for
microprocessor-based systems. The features include mi-
croprocessor reset and watchdog timing. Precise internal
voltage reference and comparator circuit monitor the
power supply line. When an out-of-tolerance condition
occurs, the R ESET output is forced to active low. In
addition, the RESET output is guaranteed to remain logic
low even with V CC as low as 1V.
An i nterna l watchdog timer is also available, which forces
A PPLICATI
S
the RESET output to active low when the watchdog input
is not toggled prior to the time-out period of 1.6 seconds.
s
s
s
s
Critical μ P Power Monitoring
Intelligent Instruments
Computers and Controllers
Automotive Systems
The LTC699 is offered in DIP and surface mount packages.
TYPICAL A PPLICATI
+5V
BLOCK D I AGRA
VCC
500k
μP POWER
RESET
V CC
RESET
LTC699
WDI
μP RESET
μP
SYSTEM
I/O LINE
1.3V
+
C1
RESET PULSE
GENERATOR
GND
0.1μF
GND
0.1μF
OSC
WATCHDOG
TIMER
MICROPROCESSOR RESET AND WATCHDOG TIMING IN
LTC699 TA1
WDI
TRANSITION
DETECTOR
LTC699 BD
A SINGLE CHIP FOR MICROPROCESSOR SYSTEMS.
1
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