TPS3825-50DBVT Equivalent & Substitute Parts

Part Overview

The TPS3825-50DBVT is a single-channel power supply supervisor IC manufactured by Texas Instruments, designed for power-on reset and supervisory functions in embedded systems. This device monitors a single voltage rail and provides push-pull output signaling with active-high reset capability. The part is currently in Last Time Buy status, making identification of equivalent and substitute components essential for ongoing design support and production continuity. Equivalent parts maintain identical electrical and mechanical specifications, while substitute parts offer compatible functionality within defined parameter tolerances.

Substiute Parts

TPS3825-50DBVT

Texas InstrumentsIn Stock: 2079TPS3825-50DBVT Datasheet

Current PartRFQ

TPS3825-50DBVR

Texas InstrumentsIn Stock: 10636TPS3825-50DBVR Datasheet

Parametric EquivalentRFQ

MAX825LEUK+T

Analog Devices Inc./Maxim IntegratedIn Stock: 1200MAX825LEUK+T Datasheet

MFR RecommendedRFQ

MAX825MEUK+T

Analog Devices Inc./Maxim IntegratedIn Stock: 3884MAX825MEUK+T Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TPS3825-50DBVT is determined by the following critical parameters:

Mechanical Compatibility: All substitute parts must use the SOT-23-5 package (SC-74A, SOT-753) to ensure pin-for-pin compatibility and PCB footprint alignment.

Functional Requirements: Substitute parts must provide single-channel voltage supervision with push-pull output capability and active-high reset signaling.

Electrical Parameters: The voltage threshold must fall within the operational range of the application circuit. The TPS3825-50DBVT monitors at 4.55V; substitute parts with thresholds of 4.38V to 4.63V remain functionally compatible for most applications requiring 5V rail supervision.

Reset Timeout: Minimum reset timeout of 120ms or greater ensures proper system initialization sequencing.

Environmental Specifications: Operating temperature range, RoHS compliance, and MSL rating must meet or exceed the original part specifications.

Substitute Categories:

• Parametric Equivalent (TPS3825-50DBVR): Identical electrical specifications and Texas Instruments base product, differing only in product status (Active vs. Last Time Buy).
• Manufacturer Recommended Substitutes (MAX825LEUK+T, MAX825MEUK+T): Analog Devices Inc./Maxim Integrated equivalents with compatible functionality, extended temperature range, and flexible reset polarity options.

Parameter Comparison

Engineering Selection Recommendations

TPS3825-50DBVR: This part is the direct parametric equivalent to the TPS3825-50DBVT, maintaining identical electrical specifications and the same Texas Instruments base product line. The primary distinction is product status: TPS3825-50DBVR is in Active status with higher inventory availability (10,623 pcs), making it the preferred choice for new designs and production continuity when the original TPS3825-50DBVT reaches end-of-life.

MAX825LEUK+T and MAX825MEUK+T: These Analog Devices Inc./Maxim Integrated supervisors provide extended operating temperature range (-40°C to 125°C versus -40°C to 85°C) and flexible reset polarity configuration (Active High or Active Low). Both parts maintain SOT-23-5 package compatibility and push-pull output functionality. The voltage threshold differences (4.63V for MAX825LEUK+T and 4.38V for MAX825MEUK+T) require circuit-level evaluation to confirm compatibility with the application's 5V rail supervision requirements. Both parts are in Active product status with established supply availability.

Selection should prioritize TPS3825-50DBVR for direct replacement in existing designs. MAX825 variants are suitable when extended temperature performance or configurable reset polarity provides system-level advantages.

Frequently Asked Questions (FAQ)

Q: Can TPS3825-50DBVR be used as a direct replacement for TPS3825-50DBVT?

A: Yes. TPS3825-50DBVR is a parametric equivalent with identical electrical specifications, package, and functional characteristics. The only difference is product status (Active vs. Last Time Buy). No circuit modifications are required.

Q: What is the key difference between the TPS3825 and MAX825 supervisor families?

A: Both families provide single-channel voltage supervision in SOT-23-5 packages with push-pull output. The MAX825 series offers extended operating temperature range (-40°C to 125°C) and configurable reset polarity (Active High or Active Low). The TPS3825-50DBVT operates to 85°C with fixed Active High reset. Voltage threshold values differ between specific part numbers.

Q: Are the voltage thresholds of MAX825LEUK+T (4.63V) and MAX825MEUK+T (4.38V) compatible with the TPS3825-50DBVT threshold of 4.55V?

A: Compatibility depends on the application circuit design. All three thresholds fall within the typical range for 5V rail supervision. Circuit validation is necessary to confirm that the specific threshold value meets system initialization and power-sequencing requirements.

Q: Do all substitute parts use the same SOT-23-5 package?

A: Yes. TPS3825-50DBVR, MAX825LEUK+T, and MAX825MEUK+T all use the SC-74A SOT-753 package designation (SOT-23-5 supplier package), ensuring pin-for-pin compatibility and identical PCB footprint.

Q: What is the significance of the 120ms versus 140ms reset timeout difference?

A: The reset timeout defines the minimum duration the reset output remains asserted after power supply stabilization. TPS3825-50DBVT specifies 120ms minimum; MAX825 variants specify 140ms minimum. Both values are suitable for standard microprocessor initialization sequences. The longer timeout of the MAX825 variants provides additional margin for system startup.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. TPS3825-50DBVR, MAX825LEUK+T, and MAX825MEUK+T are all ROHS3 compliant with MSL rating of 1 (Unlimited), matching the environmental and regulatory specifications of the original TPS3825-50DBVT.