Catalog
Triple Processor Supervisors
Key Features
• Qualified for Military ApplicationsESD Protection Exceeds 2000 V Per MIL-STD-883, Method 3015;Exceeds 200 V Using Machine Model (C = 200 pF, R = 0)Triple Supervisory Circuits for DSP and Processor-Based SystemsPower-On Reset Generator with Fixed Delay Time of 200 ms, No ExternalCapacitor NeededTemperature-Compensated Voltage ReferenceMaximum Supply Current of 40 µASupply Voltage Range . . . 2 V to 6 VDefinedRESETOutput from VDD≥ 1.1 VCDIP-8 and LCCC-20 PackagesTemperature Range . . . .–55°C to 125deg;CQualified for Military ApplicationsESD Protection Exceeds 2000 V Per MIL-STD-883, Method 3015;Exceeds 200 V Using Machine Model (C = 200 pF, R = 0)Triple Supervisory Circuits for DSP and Processor-Based SystemsPower-On Reset Generator with Fixed Delay Time of 200 ms, No ExternalCapacitor NeededTemperature-Compensated Voltage ReferenceMaximum Supply Current of 40 µASupply Voltage Range . . . 2 V to 6 VDefinedRESETOutput from VDD≥ 1.1 VCDIP-8 and LCCC-20 PackagesTemperature Range . . . .–55°C to 125deg;C
Description
AI
The TPS3307-18 is a micropower supply voltage supervisor designed for circuit initialization primarily in automotive DSP and processor-based systems, which require more than one supply voltage.
The TPS3307-18 is designed for monitoring three independent supply voltages: 3.3 V/1.8 V/adj,. The adjustable SENSE input allows the monitoring of any supply voltage >1.25 V.
The various supply voltage supervisors are designed to monitor the nominal supply voltage as shown in the following supply voltage monitoring table.
During power-on,RESETis asserted when the supply voltage VDDbecomes higher than 1.1 V. Thereafter, the supply voltage supervisor monitors the SENSEn inputs and keepsRESETactive as long as SENSEn remain below the threshold voltage VIT+.
An internal timer delays the return of theRESEToutput to the inactive state (high) to ensure proper system reset. The delay time, td typ= 200 ms, starts after all SENSEn inputs have risen above the threshold voltage VIT+. When the voltage at any SENSE input drops below the threshold voltage VIT–, theRESEToutput becomes active (low) again.
The TPS3307-18 incorporates a manual reset input,MR. A low level atMRcausesRESETto become active. In addition to the active-lowRESEToutput, the TPS3307-18 includes an active-high RESET output.
The TPS3307-18 is a micropower supply voltage supervisor designed for circuit initialization primarily in automotive DSP and processor-based systems, which require more than one supply voltage.
The TPS3307-18 is designed for monitoring three independent supply voltages: 3.3 V/1.8 V/adj,. The adjustable SENSE input allows the monitoring of any supply voltage >1.25 V.
The various supply voltage supervisors are designed to monitor the nominal supply voltage as shown in the following supply voltage monitoring table.
During power-on,RESETis asserted when the supply voltage VDDbecomes higher than 1.1 V. Thereafter, the supply voltage supervisor monitors the SENSEn inputs and keepsRESETactive as long as SENSEn remain below the threshold voltage VIT+.
An internal timer delays the return of theRESEToutput to the inactive state (high) to ensure proper system reset. The delay time, td typ= 200 ms, starts after all SENSEn inputs have risen above the threshold voltage VIT+. When the voltage at any SENSE input drops below the threshold voltage VIT–, theRESEToutput becomes active (low) again.
The TPS3307-18 incorporates a manual reset input,MR. A low level atMRcausesRESETto become active. In addition to the active-lowRESEToutput, the TPS3307-18 includes an active-high RESET output.