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TPS3705-33DRG4

TPS3705-33DRG4 Voltage Supervisor, 2.93V Threshold

MPNTPS3705-33DRG4
End of Life

Texas Instruments TPS3705-33DRG4, Simple Reset/Power-On Reset, Active Low, Push-Pull/Totem Pole Output, 1 Channel, 8-SOIC, -40°C to 85°C.

Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

TPS3705-33DRG4 specifications
ParameterValue
TypeSimple Reset/Power-On Reset
MountingSurface Mount
Voltage - threshold2.93V
Number of voltages monitored1
Operating temperature-40°C~85°C(TA)
ResetActive Low
OutputPush-Pull, Totem Pole
PackageTape & Reel (TR)
Reset timeout140ms Minimum
Case8-SOIC (0.154\", 3.90mm Width)

Product details

2.93 V threshold — the trip point that matters

Its voltage threshold is 2.93 V, meaning it asserts a reset when the monitored voltage drops below that level and holds it low for a minimum of 140 ms after the supply recovers. That timeout window is sized for typical MCU oscillator start-up and power-rail settling — long enough to avoid a spurious release, short enough to keep the system responsive.

Push-pull output — no external pull-up needed

The output is active-low, push-pull (totem pole), so it drives the reset line high and low without requiring an external pull-up resistor. This simplifies the BOM and saves a resistor slot on the board. The output type is a direct match for the majority of processor reset inputs that expect a driven low level during power-up or brownout.

Industrial temperature range — covers the usual suspects

It is not specified for extended automotive under-hood or downhole environments where the junction temperature would push beyond 85°C.

Frequently asked questions

Does TPS3705-33DRG4 have a push-pull or open-drain output?

It has a push-pull (totem pole) output. This means it drives the reset line actively high and low — no external pull-up resistor is required.

What is the reset timeout of TPS3705-33DRG4?

The reset timeout is a minimum of 140 ms. This is the duration the reset output stays low after the monitored voltage rises above the threshold.

Can TPS3705-33DRG4 replace TPS3705-33DR?

The TPS3705-33DRG4 is the Tape & Reel variant of the base TPS3705-33DR. The die and electrical specifications are identical. The 'G4' suffix indicates a halogen-free, lead-free finish. It is a drop-in replacement for the TPS3705-33DR in the same 8-SOIC footprint.