TPS3705 Series

Processor supervisor with power fail and integrated watchdog timer

Catalog(9 parts)

Part	Operating Temperature▲▼	Operating Temperature▲▼	Mounting Type	Reset	Type	Output	Number of Voltages Monitored▲▼	Reset Timeout▲▼	Supplier Device Package	Voltage - Threshold▲▼	Package / Case▲▼	Package / Case	Package / Case▲▼	Package / Case▲▼
Texas Instruments TPS3705-50DR Supervisor Push-Pull, Totem Pole 1 Channel 8-SOIC	85 °C	-40 °C	Surface Mount	Active Low	Simple Reset/Power-On Reset	Push-Pull, Totem Pole	1 ul	0.14000000059604645 s	8-SOIC	4.550000190734863 V	0.003899999894201755 m	8-SOIC
Texas Instruments TPS3705-33DG4 Supervisor Push-Pull, Totem Pole 1 Channel 8-SOIC	85 °C	-40 °C	Surface Mount	Active Low	Simple Reset/Power-On Reset	Push-Pull, Totem Pole	1 ul	0.14000000059604645 s	8-SOIC	2.930000066757202 V	0.003899999894201755 m	8-SOIC
Texas Instruments TPS3705-50DGN Supervisor Push-Pull, Totem Pole 1 Channel 8-HVSSOP	85 °C	-40 °C	Surface Mount	Active Low	Simple Reset/Power-On Reset	Push-Pull, Totem Pole	1 ul	0.14000000059604645 s	8-HVSSOP	4.550000190734863 V		8-MSOP, 8-TSSOP, Exposed Pad	0.0029972000047564507 m	0.003000000026077032 m
Texas Instruments TPS3705-33D Supervisor Push-Pull, Totem Pole 1 Channel 8-SOIC	85 °C	-40 °C	Surface Mount	Active Low	Simple Reset/Power-On Reset	Push-Pull, Totem Pole	1 ul	0.14000000059604645 s	8-SOIC	2.930000066757202 V	0.003899999894201755 m	8-SOIC
Texas Instruments TPS3705-30DGN Supervisor Push-Pull, Totem Pole 1 Channel 8-HVSSOP	85 °C	-40 °C	Surface Mount	Active Low	Simple Reset/Power-On Reset	Push-Pull, Totem Pole	1 ul	0.14000000059604645 s	8-HVSSOP	2.630000114440918 V		8-MSOP, 8-TSSOP, Exposed Pad	0.0029972000047564507 m	0.003000000026077032 m
Texas Instruments TPS3705-50DGNR Supervisor Push-Pull, Totem Pole 1 Channel 8-HVSSOP	85 °C	-40 °C	Surface Mount	Active Low	Simple Reset/Power-On Reset	Push-Pull, Totem Pole	1 ul	0.14000000059604645 s	8-HVSSOP	4.550000190734863 V		8-MSOP, 8-TSSOP, Exposed Pad	0.0029972000047564507 m	0.003000000026077032 m
Texas Instruments TPS3705-50DRG4 Supervisor Push-Pull, Totem Pole 1 Channel 8-SOIC	85 °C	-40 °C	Surface Mount	Active Low	Simple Reset/Power-On Reset	Push-Pull, Totem Pole	1 ul	0.14000000059604645 s	8-SOIC	4.550000190734863 V	0.003899999894201755 m	8-SOIC
Texas Instruments TPS3705-33DGN Supervisor Push-Pull, Totem Pole 1 Channel 8-HVSSOP	85 °C	-40 °C	Surface Mount	Active Low	Simple Reset/Power-On Reset	Push-Pull, Totem Pole	1 ul	0.14000000059604645 s	8-HVSSOP	2.930000066757202 V		8-MSOP, 8-TSSOP, Exposed Pad	0.0029972000047564507 m	0.003000000026077032 m
Texas Instruments TPS3705-30DR Supervisor Push-Pull, Totem Pole 1 Channel 8-SOIC	85 °C	-40 °C	Surface Mount	Active Low	Simple Reset/Power-On Reset	Push-Pull, Totem Pole	1 ul	0.14000000059604645 s	8-SOIC	2.630000114440918 V	0.003899999894201755 m	8-SOIC

Key Features

• Power-on reset generator with fixed delay time of 200 ms (no external capacitor needed)Precision supply voltage monitor: 2.5 V, 3 V, 3.3 V, and 5 VPin-for-pin compatible with the MAX705 through MAX708 SeriesIntegrated watchdog time (TPS3705-xx Only)Voltage monitor for power-fail or low-battery warningMaximum supply current of 50 µA8-Pin MSOP and 8-Pin SOIC packagesTemperature range: –40°C to 85°C (–40°C to 125°C for TPS3705-33)Power-on reset generator with fixed delay time of 200 ms (no external capacitor needed)Precision supply voltage monitor: 2.5 V, 3 V, 3.3 V, and 5 VPin-for-pin compatible with the MAX705 through MAX708 SeriesIntegrated watchdog time (TPS3705-xx Only)Voltage monitor for power-fail or low-battery warningMaximum supply current of 50 µA8-Pin MSOP and 8-Pin SOIC packagesTemperature range: –40°C to 85°C (–40°C to 125°C for TPS3705-33)

Description

The TPS370x-xx family of microprocessor supply-voltage supervisors provide circuit initialization and timing supervision, primarily for DSP and processor-based systems. During power-on,RESETis asserted when the supply voltage VDDbecomes higher than 1.1 V. Thereafter, the supply voltage supervisor monitors VDDand keepsRESETactive as long as VDDremains below the threshold voltage VIT+. When the supply voltage drops below the threshold voltage VIT–, the output becomes active (low) again. No external components are required. All the devices of this family have a fixed-sense threshold voltage VIT–set by an internal voltage divider. The product spectrum is designed for supply voltages of 2.5 V, 3 V, 3.3 V, and 5 V. The circuits are available in either 8-pin MSOP or standard SOIC packages. The TPS370x-xx devices are characterized for operation over a temperature range of −40°C to 85°C. The TPS370x-xx family of microprocessor supply-voltage supervisors provide circuit initialization and timing supervision, primarily for DSP and processor-based systems. During power-on,RESETis asserted when the supply voltage VDDbecomes higher than 1.1 V. Thereafter, the supply voltage supervisor monitors VDDand keepsRESETactive as long as VDDremains below the threshold voltage VIT+. When the supply voltage drops below the threshold voltage VIT–, the output becomes active (low) again. No external components are required. All the devices of this family have a fixed-sense threshold voltage VIT–set by an internal voltage divider. The product spectrum is designed for supply voltages of 2.5 V, 3 V, 3.3 V, and 5 V. The circuits are available in either 8-pin MSOP or standard SOIC packages. The TPS370x-xx devices are characterized for operation over a temperature range of −40°C to 85°C.