LTC699 Series

Microprocessor Supervisory Circuit

Manufacturer: Analog Devices Inc./Maxim Integrated

Catalog

Microprocessor Supervisory Circuit

Part	Output	Mounting Type	Reset Timeout [Min]	Supplier Device Package	Number of Voltages Monitored	Reset	Type	Operating Temperature [Max]	Operating Temperature [Min]	Package / Case	Package / Case	Package / Case
Analog Devices Inc./Maxim Integrated LTC699IS8#TRPBF	Open Drain or Open Collector	Surface Mount	140 ms	8-SO	1	Active Low	Simple Reset/Power-On Reset	85 C	-40 ¯C	0.154 in	8-SOIC	3.9 mm
Analog Devices Inc./Maxim Integrated LTC699CS8#TRPBF	Open Drain or Open Collector	Surface Mount	140 ms	8-SO	1	Active Low	Simple Reset/Power-On Reset	70 °C	0 °C	0.154 in	8-SOIC	3.9 mm
Analog Devices Inc./Maxim Integrated LTC699IS8#PBF	Open Drain or Open Collector	Surface Mount	140 ms	8-SO	1	Active Low	Simple Reset/Power-On Reset	85 C	-40 ¯C	0.154 in	8-SOIC	3.9 mm
Analog Devices Inc./Maxim Integrated LTC699CS8#PBF	Open Drain or Open Collector	Surface Mount	140 ms	8-SO	1	Active Low	Simple Reset/Power-On Reset	70 °C	0 °C	0.154 in	8-SOIC	3.9 mm
Analog Devices Inc./Maxim Integrated LTC699CN8#PBF	Open Drain or Open Collector	Through Hole	140 ms	8-PDIP	1	Active Low	Simple Reset/Power-On Reset	70 °C	0 °C		8-DIP (0.300" 7.62mm)
Analog Devices Inc./Maxim Integrated LTC699IN8#PBF	Open Drain or Open Collector	Through Hole	140 ms	8-PDIP	1	Active Low	Simple Reset/Power-On Reset	85 C	-40 ¯C		8-DIP (0.300" 7.62mm)

Catalog

Microprocessor Supervisory Circuit

Description

The LTC699 provides power supply monitoring for microprocessor-based systems. The features include microprocessor reset and watchdog timing. Precise internal voltage reference and comparator circuit monitor the power supply line. When an out-of-tolerance condition occurs, theRESEToutput is forced to active low. In addition, theRESEToutput is guaranteed to remain logic low even with VCCas low as 1V.An internal watchdog timer is also available, which forces theRESEToutput to active low when the watchdog input is not toggled prior to the time-out period of 1.6 seconds.The LTC699 is offered in DIP and surface mount packages.ApplicationsCritical µP Power MonitoringIntelligent InstrumentsComputers and ControllersAutomotive Systems