MAX667MSA/PR Equivalent & Substitute Parts

Part Overview

The MAX667MSA/PR is a linear voltage regulator IC from Analog Devices Inc./Maxim Integrated, classified as a positive adjustable (fixed) output power management IC with 250mA output capability in an 8-SOIC surface mount package. This part is currently obsolete, making identification of functionally equivalent alternatives necessary for ongoing design support and component procurement. The MAX667MSA/PR serves applications requiring adjustable or fixed positive voltage regulation with low dropout characteristics and integrated control features including dropout detection, enable functionality, and low battery detection.

Key Parameters

Parameter	Value
Manufacturer Part Number	MAX667MSA/PR
Manufacturer	Analog Devices Inc./Maxim Integrated
Category	Power Management (PMIC)
Output Configuration	Positive
Output Type	Adjustable (Fixed)
Voltage - Input (Max)	16.5V
Voltage - Output (Min/Fixed)	1.3V (5V)
Voltage - Output (Max)	16V
Current - Output	250mA
Voltage Dropout (Max)	0.35V @ 200mA
Operating Temperature	-55°C ~ 125°C
Package / Case	8-SOIC (0.154", 3.90mm Width)
Product Status	Obsolete
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the MAX667MSA/PR are identified based on strict electrical and mechanical compatibility criteria. The primary substitution parameters are:

Output configuration (Positive)
Output type (Adjustable/Fixed)
Voltage input maximum (16.5V)
Voltage output range (1.3V to 16V)
Package type (8-SOIC)
Mounting type (Surface Mount)
RoHS compliance status

Two substitute parts meet these criteria: ADP667ARZ-REEL7 and ADP3367ARZ. Both are manufactured by Analog Devices Inc. and maintain identical package geometry and electrical output specifications. ADP667ARZ-REEL7 provides direct parameter equivalence with the obsolete MAX667MSA/PR. ADP3367ARZ offers increased output current capability (300mA versus 250mA) while maintaining all other critical electrical parameters within compatible ranges.

Parameter Comparison

Parameter	MAX667MSA/PR	ADP667ARZ-REEL7	ADP3367ARZ
Manufacturer	Analog Devices Inc./Maxim Integrated	Analog Devices Inc.	Analog Devices Inc.
Output Configuration	Positive	Positive	Positive
Output Type	Adjustable (Fixed)	Adjustable (Fixed)	Adjustable (Fixed)
Voltage - Input (Max)	16.5V	16.5V	16.5V
Voltage - Output (Min/Fixed)	1.3V (5V)	1.3V (5V)	1.3V (5V)
Voltage - Output (Max)	16V	16V	16V
Current - Output	250mA	250mA	300mA
Voltage Dropout (Max)	0.35V @ 200mA	0.35V @ 200mA	0.5V @ 300mA
Current - Quiescent (Iq)	35 µA	35 µA	25 µA
Operating Temperature	-55°C ~ 125°C	-40°C ~ 85°C	-40°C ~ 85°C
Package / Case	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)
Product Status	Obsolete	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

ADP667ARZ-REEL7 is the direct functional equivalent for MAX667MSA/PR replacement. This part maintains identical electrical specifications including 250mA output current, 0.35V maximum dropout voltage at 200mA, and 35µA quiescent current. Both parts are ROHS3 compliant and housed in the same 8-SOIC package. The primary difference is product status: ADP667ARZ-REEL7 is active and currently in production, ensuring long-term availability and supply chain continuity.

ADP3367ARZ serves as an alternative substitute when increased output current capacity is acceptable for the application. This part provides 300mA output current with lower quiescent current (25µA versus 35µA), though dropout voltage increases to 0.5V at full current. Operating temperature range narrows to -40°C ~ 85°C compared to the original -55°C ~ 125°C specification. ADP3367ARZ is suitable for applications where the original temperature range is not required and higher current delivery is beneficial.

Both substitute parts are manufactured by Analog Devices Inc., maintain identical package geometry, and carry ROHS3 compliance certification matching the original part.

Frequently Asked Questions (FAQ)

Q: Can ADP667ARZ-REEL7 be used as a direct replacement for MAX667MSA/PR?

A: Yes. ADP667ARZ-REEL7 maintains identical electrical specifications for output current (250mA), dropout voltage (0.35V @ 200mA), quiescent current (35µA), input/output voltage ranges, and package geometry (8-SOIC). The part is pin-compatible and functionally equivalent. The primary difference is product status: ADP667ARZ-REEL7 is active production while MAX667MSA/PR is obsolete.

Q: What are the differences between ADP667ARZ-REEL7 and ADP3367ARZ?

A: Both parts share identical output configuration, voltage ranges, and package type. Key differences are: ADP3367ARZ provides 300mA output current versus 250mA for ADP667ARZ-REEL7; ADP3367ARZ has lower quiescent current (25µA versus 35µA); ADP3367ARZ dropout voltage is 0.5V @ 300mA versus 0.35V @ 200mA; operating temperature range for ADP3367ARZ is -40°C ~ 85°C versus -40°C ~ 85°C for ADP667ARZ-REEL7.

Q: Are the substitute parts pin-compatible with MAX667MSA/PR?

A: Yes. Both ADP667ARZ-REEL7 and ADP3367ARZ use the 8-SOIC package with identical pin configuration and spacing (0.154" width, 3.90mm). Direct PCB substitution is possible without layout modifications.

Q: Do the substitute parts meet the same compliance standards?

A: Yes. Both ADP667ARZ-REEL7 and ADP3367ARZ are ROHS3 compliant, matching the original MAX667MSA/PR certification. Both carry REACH Unaffected status and EAR99 ECCN classification identical to the original part.

Q: Which substitute should be selected for new designs?

A: ADP667ARZ-REEL7 is recommended for direct replacement applications requiring identical electrical specifications. ADP3367ARZ is suitable when increased output current (300mA) is beneficial and the narrower operating temperature range (-40°C ~ 85°C) is acceptable for the application.

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