CAT150049SWI-GT3 Equivalent & Substitute Parts

Part Overview

The CAT150049SWI-GT3 is a Power Management Integrated Circuit (PMIC) supervisor manufactured by onsemi, designed for single-channel power-on reset and voltage monitoring applications. This device features push-pull totem pole output configuration with active-low reset functionality and a 140ms minimum reset timeout. The part is classified as obsolete, making equivalent substitute components necessary for new designs and ongoing production requirements. Substitute parts maintain identical electrical and mechanical specifications while offering active product status and improved availability.

Key Parameters

Parameter	Value
Manufacturer Part Number	CAT150049SWI-GT3
Manufacturer	onsemi
Category	Power Management (PMIC)
Type	Simple Reset/Power-On Reset
Number of Voltages Monitored	1
Voltage - Threshold	2.93V
Output Configuration	Push-Pull, Totem Pole
Reset Logic	Active Low
Reset Timeout	140ms Minimum
Operating Temperature Range	-40°C ~ 85°C (TA)
Mounting Type	Surface Mount
Package / Case	8-SOIC (0.154", 3.90mm Width)
Supplier Device Package	8-SOIC
Moisture Sensitivity Level (MSL)	1 (Unlimited)
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitute parts for the CAT150049SWI-GT3 are qualified based on strict parametric equivalence across the following critical specifications:

Single-channel voltage monitoring with 2.93V threshold
Push-pull totem pole output configuration
Active-low reset logic with 140ms minimum timeout
8-SOIC surface mount package (0.154", 3.90mm width)
Operating temperature range -40°C to 85°C
Moisture sensitivity level MSL 1 (unlimited)

All qualified substitutes maintain identical electrical performance and mechanical compatibility. Substitute parts are grouped by active product status and compliance certifications, enabling direct replacement in new designs and production environments.

Parameter Comparison

Part Number	Manufacturer	Voltage Threshold	Output Type	Reset Logic	Reset Timeout	Package	Operating Temp	Product Status	RoHS Status
CAT150049SWI-GT3	onsemi	2.93V	Push-Pull, Totem Pole	Active Low	140ms Min	8-SOIC	-40°C ~ 85°C	Obsolete	Not Specified
TPS3705-33DR	Texas Instruments	2.93V	Push-Pull, Totem Pole	Active Low	140ms Min	8-SOIC	-40°C ~ 85°C	Active	ROHS3 Compliant
ADM709SARZ-REEL	Analog Devices Inc.	2.93V	Push-Pull, Totem Pole	Active Low	140ms Min	8-SOIC	-40°C ~ 85°C	Active	ROHS3 Compliant
MAX706ASESA+T	Analog Devices Inc./Maxim Integrated	2.93V	Push-Pull, Totem Pole	Active Low	140ms Min	8-SOIC	-40°C ~ 85°C	Active	ROHS3 Compliant
MAX706SESA+T	Analog Devices Inc./Maxim Integrated	2.93V	Push-Pull, Totem Pole	Active Low	140ms Min	8-SOIC	-40°C ~ 85°C	Active	ROHS3 Compliant
MAX709SESA+T	Analog Devices Inc./Maxim Integrated	2.93V	Push-Pull, Totem Pole	Active Low	140ms Min	8-SOIC	-40°C ~ 85°C	Active	ROHS3 Compliant
STM706SM6F	STMicroelectronics	2.93V	Push-Pull, Totem Pole	Active Low	140ms Min	8-SOIC	-40°C ~ 85°C	Active	ROHS3 Compliant

Engineering Selection Recommendations

All substitute parts listed above are parametrically equivalent to the CAT150049SWI-GT3 and suitable for direct replacement. Selection among active alternatives should be based on the following factors:

Product Status & Availability: All substitute parts maintain active product status with established supply chains. The CAT150049SWI-GT3 is obsolete; substitution is required for new production.

Compliance & Certifications: All substitute parts are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements. The original CAT150049SWI-GT3 compliance status is not specified.

Packaging & Logistics: Substitute parts are available in standard packaging formats (Cut Tape & Digi-Reel or Tape & Reel), supporting both prototype and high-volume production workflows.

Inventory Availability: Substitute parts demonstrate robust inventory levels across multiple manufacturers, ensuring supply continuity for design transitions.

Frequently Asked Questions (FAQ)

Q: Can I directly replace CAT150049SWI-GT3 with any of the listed substitute parts?

A: Yes. All listed substitute parts are parametrically equivalent across voltage threshold (2.93V), output configuration (push-pull totem pole), reset logic (active low), reset timeout (140ms minimum), package type (8-SOIC), and operating temperature range (-40°C to 85°C). Direct pin-for-pin replacement is supported.

Q: Why is the CAT150049SWI-GT3 marked as obsolete?

A: The CAT150049SWI-GT3 has reached end-of-life status with onsemi. Substitute parts from active manufacturers (Texas Instruments, Analog Devices Inc., STMicroelectronics) provide equivalent functionality with ongoing support and availability.

Q: Are there differences in packaging between substitute options?

A: Substitute parts are available in two packaging formats: Cut Tape & Digi-Reel (TPS3705-33DR, MAX706ASESA+T, MAX706SESA+T, STM706SM6F) and Tape & Reel (ADM709SARZ-REEL, MAX709SESA+T). All use the same 8-SOIC physical package. Selection depends on procurement volume and assembly requirements.

Q: Do all substitute parts meet current compliance standards?

A: Yes. All substitute parts are ROHS3 compliant and REACH unaffected. The original CAT150049SWI-GT3 compliance status is not specified in available documentation.

Q: What is the moisture sensitivity level for substitute parts?

A: All substitute parts maintain MSL 1 (unlimited), matching the original CAT150049SWI-GT3 specification.

Q: Can I use these substitutes in existing designs without circuit modifications?

A: Yes. Parametric equivalence across all critical electrical and mechanical specifications ensures compatibility without design changes. Pin configuration and functional behavior are identical.

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