MAX709LCSA Equivalent & Substitute Parts

Part Overview

The MAX709LCSA is a power management integrated circuit (PMIC) functioning as a supervisor with push-pull, totem pole output configuration. This device monitors a single voltage channel and provides active-low reset functionality with a 140ms minimum reset timeout. The MAX709LCSA is classified as obsolete, making equivalent substitute parts necessary for ongoing design support and component procurement.

Key Parameters

Parameter	Value
Manufacturer	Analog Devices Inc./Maxim Integrated
Category	Power Management (PMIC)
Type	Simple Reset/Power-On Reset Supervisor
Number of Voltages Monitored	1
Voltage Threshold	4.65V
Output Configuration	Push-Pull, Totem Pole
Reset Logic	Active Low
Reset Timeout	140ms Minimum
Operating Temperature Range	0°C ~ 70°C (TA)
Package Type	8-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
REACH Status	REACH Unaffected

Substitute Part Grouping Explanation

Substitute parts for the MAX709LCSA are qualified based on strict electrical and mechanical parameter equivalence. The following criteria determine substitution validity:

Critical Equivalence Parameters:

Single voltage channel monitoring capability
4.65V voltage threshold setting
Push-pull, totem pole output configuration
Active-low reset logic
140ms minimum reset timeout
8-SOIC surface mount package (0.154", 3.90mm width)
Operating temperature range 0°C ~ 70°C
RoHS3 compliance and REACH unaffected status

All substitute parts listed maintain identical electrical specifications and mechanical compatibility with the MAX709LCSA, enabling direct functional replacement in circuit designs.

Parameter Comparison

Parameter	MAX709LCSA	MAX709LCSA+	MAX705CSA+	MAX7705CSA+
Manufacturer	Analog Devices Inc./Maxim Integrated	Analog Devices Inc./Maxim Integrated	Analog Devices Inc./Maxim Integrated	Analog Devices Inc./Maxim Integrated
Product Status	Obsolete	Active	Active	Active
Type	Simple Reset/Power-On Reset	Simple Reset/Power-On Reset	Simple Reset/Power-On Reset	Simple Reset/Power-On Reset
Number of Voltages Monitored	1	1	1	1
Voltage Threshold	4.65V	4.65V	4.65V	4.65V
Output Configuration	Push-Pull, Totem Pole	Push-Pull, Totem Pole	Push-Pull, Totem Pole	Push-Pull, Totem Pole
Reset Logic	Active Low	Active Low	Active Low	Active Low
Reset Timeout	140ms Minimum	140ms Minimum	140ms Minimum	140ms Minimum
Operating Temperature	0°C ~ 70°C (TA)	0°C ~ 70°C (TA)	0°C ~ 70°C (TA)	0°C ~ 70°C (TA)
Package / Case	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

MAX709LCSA+ (Direct Packaging Equivalent) The MAX709LCSA+ is the primary substitute for the obsolete MAX709LCSA. This part maintains identical electrical specifications and is supplied in tube packaging. Product status is active, ensuring long-term availability and supply chain continuity.

MAX705CSA+ (Parametric Equivalent) The MAX705CSA+ provides full parametric equivalence to the MAX709LCSA with active product status. This part is based on the MAX705 base product number and represents an alternative from the same manufacturer family. Higher inventory availability (12,300 units) supports procurement requirements.

MAX7705CSA+ (Parametric Equivalent) The MAX7705CSA+ delivers complete electrical and mechanical compatibility with the MAX709LCSA. Based on the MAX7705 base product number, this part maintains active status and is ROHS3 compliant and REACH unaffected.

All substitute parts are manufactured by Analog Devices Inc./Maxim Integrated and comply with RoHS3 and REACH regulatory requirements applicable to the original part.

Frequently Asked Questions (FAQ)

Q: Can MAX709LCSA+ be used as a direct replacement for MAX709LCSA? A: Yes. The MAX709LCSA+ is electrically and mechanically identical to the MAX709LCSA. The primary difference is product status (active versus obsolete) and packaging format (tube). All electrical parameters, threshold voltage, output configuration, reset timing, and package dimensions are equivalent.

Q: What is the difference between MAX709LCSA+ and MAX705CSA+? A: Both parts are parametric equivalents with identical electrical specifications for voltage monitoring, threshold setting, output configuration, and reset timing. The difference lies in the base product number (MAX709 versus MAX705). Both are active products from Analog Devices Inc./Maxim Integrated and are suitable for direct substitution.

Q: Are all substitute parts compatible with the original MAX709LCSA circuit design? A: Yes. All listed substitute parts maintain identical voltage threshold (4.65V), output configuration (push-pull, totem pole), reset logic (active low), reset timeout (140ms minimum), operating temperature range (0°C ~ 70°C), and 8-SOIC package dimensions. No circuit modifications are required.

Q: What is the significance of the "+" suffix in part numbers? A: The "+" suffix indicates tube packaging format. The MAX709LCSA was supplied without specified packaging, while MAX709LCSA+, MAX705CSA+, and MAX7705CSA+ are supplied in tube packaging, which is standard for surface mount components.

Q: Are all substitute parts RoHS3 compliant? A: Yes. All substitute parts listed are ROHS3 compliant and REACH unaffected, matching the regulatory compliance status of the original MAX709LCSA.

Q: Which substitute part should be selected for new designs? A: For new designs, MAX709LCSA+ or MAX705CSA+ are recommended due to active product status and established supply availability. Selection between these parts may depend on inventory availability and supplier preference, as electrical specifications are identical.

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