CAT150029SWI-GT3 Equivalent & Substitute Parts

Part Overview

The CAT150029SWI-GT3 is a Power Management Integrated Circuit (PMIC) supervisor manufactured by onsemi, designed for simple reset and power-on reset functionality. This device monitors a single voltage supply and provides push-pull, totem pole output with active-low reset control. The part is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements.

Key Parameters

Parameter	Value
Manufacturer Part Number	CAT150029SWI-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)
Package / Case	8-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
Product Status	Obsolete
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the CAT150029SWI-GT3 are qualified based on the following critical parameters that must match exactly:

Single voltage monitoring channel
Voltage threshold of 2.93V
Push-pull, totem pole output configuration
Active-low reset logic
140ms minimum reset timeout
Operating temperature range of -40°C ~ 85°C
8-SOIC surface mount package (0.154", 3.90mm width)

All substitute parts listed below meet these electrical and mechanical specifications, enabling direct functional replacement in existing circuit designs.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Voltage Threshold	Output Type	Reset Logic	Reset Timeout	Operating Temp	Package	Product Status	RoHS Status
CAT150029SWI-GT3	onsemi	2.93V	Push-Pull, Totem Pole	Active Low	140ms Min	-40°C ~ 85°C	8-SOIC	Obsolete	Not Specified
STM706SM6F	STMicroelectronics	2.93V	Push-Pull, Totem Pole	Active Low	140ms Min	-40°C ~ 85°C	8-SOIC	Active	ROHS3 Compliant
ADM709SARZ-REEL	Analog Devices Inc.	2.93V	Push-Pull, Totem Pole	Active Low	140ms Min	-40°C ~ 85°C	8-SOIC	Active	ROHS3 Compliant
MAX706ASESA+T	Analog Devices Inc./Maxim Integrated	2.93V	Push-Pull, Totem Pole	Active Low	140ms Min	-40°C ~ 85°C	8-SOIC	Active	ROHS3 Compliant
MAX706SESA+T	Analog Devices Inc./Maxim Integrated	2.93V	Push-Pull, Totem Pole	Active Low	140ms Min	-40°C ~ 85°C	8-SOIC	Active	ROHS3 Compliant
MAX709SESA+T	Analog Devices Inc./Maxim Integrated	2.93V	Push-Pull, Totem Pole	Active Low	140ms Min	-40°C ~ 85°C	8-SOIC	Active	ROHS3 Compliant
TPS3705-33DR	Texas Instruments	2.93V	Push-Pull, Totem Pole	Active Low	140ms Min	-40°C ~ 85°C	8-SOIC	Active	ROHS3 Compliant

Engineering Selection Recommendations

All substitute parts listed are parametrically equivalent to the CAT150029SWI-GT3 and provide direct functional replacement. The following factors should guide component selection:

Product Status: The original CAT150029SWI-GT3 is obsolete. All listed substitutes are active products with ongoing manufacturer support and availability.

Compliance & Certifications: All substitute parts are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements. The original part's compliance status is not specified.

Packaging & Availability: Substitute parts are available in multiple packaging formats (Cut Tape, Tape & Reel, Digi-Reel). Selection should align with production volume and assembly requirements.

Manufacturer Selection: STMicroelectronics (STM706SM6F), Analog Devices Inc. (ADM709SARZ-REEL, MAX706 series, MAX709SESA+T), and Texas Instruments (TPS3705-33DR) all provide qualified alternatives with established supply chains.

Frequently Asked Questions (FAQ)

Q: Can these substitute parts be used as direct replacements for the CAT150029SWI-GT3?

A: Yes. All listed parts meet the identical electrical specifications: 2.93V threshold, push-pull totem pole output, active-low reset, 140ms minimum timeout, and -40°C to 85°C operating range. The 8-SOIC package is mechanically identical across all parts.

Q: What is the difference between the various MAX706 and MAX709 variants?

A: The MAX706ASESA+T and MAX706SESA+T are both MAX706-based supervisors with identical electrical parameters. The MAX709SESA+T is a MAX709-based variant. All three meet the CAT150029SWI-GT3 specifications. Selection between them should be based on packaging preference (Cut Tape vs. Tape & Reel) and inventory availability.

Q: Are there any compliance differences between the original part and substitutes?

A: The original CAT150029SWI-GT3 is obsolete with unspecified compliance status. All substitute parts are ROHS3 compliant and REACH unaffected, meeting current regulatory standards for new designs and production.

Q: Does packaging format affect electrical performance?

A: No. Packaging format (Cut Tape, Tape & Reel, Digi-Reel) affects only handling, storage, and assembly logistics. Electrical and thermal performance remains identical across all packaging options for the same part number.

Q: Which substitute offers the best availability?

A: MAX706SESA+T has the highest inventory level at 106,550 pieces. TPS3705-33DR follows with 35,300 pieces. All parts are in active production with established supply channels.

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