SP706REN-L Equivalent & Substitute Parts

Part Overview

The SP706REN-L is a single-channel power management supervisor IC manufactured by MaxLinear, Inc., housed in an 8-SOIC surface mount package. This component functions as a simple reset/power-on reset supervisor with a 2.63V voltage threshold and 140ms minimum reset timeout, designed for -40°C to 85°C operating environments. The part is currently classified as obsolete, necessitating identification of functionally equivalent alternatives from active product lines to maintain design continuity and ensure long-term component availability.

Key Parameters

Parameter	SP706REN-L
Manufacturer	MaxLinear, Inc.
Category	Power Management (PMIC)
Type	Simple Reset/Power-On Reset
Number of Voltages Monitored	1
Voltage - Threshold	2.63V
Reset	Active Low
Reset Timeout	140ms Minimum
Operating Temperature	-40°C ~ 85°C (TA)
Package / Case	8-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
Moisture Sensitivity Level (MSL)	1 (Unlimited)
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution eligibility for the SP706REN-L is determined by strict alignment with the following critical parameters:

Package / Case: 8-SOIC (0.154", 3.90mm Width) — physical and electrical compatibility requirement
Voltage - Threshold: 2.63V — functional equivalence for power supply monitoring
Reset: Active Low — logic-level compatibility
Number of Voltages Monitored: 1 — functional scope match
Operating Temperature Range: -40°C ~ 85°C (TA) — environmental specification compatibility
Mounting Type: Surface Mount — PCB assembly compatibility

All identified substitute parts meet these core parameters. Variations in output type (Push-Pull/Totem Pole versus Open Drain), reset timeout specifications, and product status are noted but do not preclude functional substitution when circuit design accommodates the output configuration.

Parameter Comparison

Parameter	SP706REN-L	STM706RM6F	ADM706RARZ	ADM706RARZ-REEL	ADM706RARZ-REEL7	DS1706RESA+	DS1706RESA+T&R	MAX706ARESA+	MAX706ARESA+T	MAX706RCSA+	MAX706RCSA+T
Manufacturer	MaxLinear, Inc.	STMicroelectronics	Analog Devices Inc.	Analog Devices Inc.	Analog Devices Inc.	Analog Devices Inc./Maxim Integrated	Analog Devices Inc./Maxim Integrated	Analog Devices Inc./Maxim Integrated	Analog Devices Inc./Maxim Integrated	Analog Devices Inc./Maxim Integrated	Analog Devices Inc./Maxim Integrated
Type	Simple Reset/Power-On Reset	Simple Reset/Power-On Reset	Simple Reset/Power-On Reset	Simple Reset/Power-On Reset	Simple Reset/Power-On Reset	Simple Reset/Power-On Reset	Simple Reset/Power-On Reset	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	1	1	1	1	1	1	1
Voltage - Threshold	2.63V	2.63V	2.63V	2.63V	2.63V	2.63V	2.63V	2.63V	2.63V	2.63V	2.63V
Output	—	Push-Pull, Totem Pole	Push-Pull, Totem Pole	Push-Pull, Totem Pole	Push-Pull, Totem Pole	Push-Pull, Totem Pole	Push-Pull, Totem Pole	Push-Pull, Totem Pole	Push-Pull, Totem Pole	Push-Pull, Totem Pole	Push-Pull, Totem Pole
Reset	Active Low	Active Low	Active Low	Active Low	Active Low	Active Low	Active Low	Active Low	Active Low	Active Low	Active Low
Reset Timeout	140ms Minimum	140ms Minimum	160ms Minimum	160ms Minimum	160ms Minimum	130ms Minimum	130ms Minimum	140ms Minimum	140ms Minimum	140ms Minimum	140ms Minimum
Operating Temperature	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)	-40°C ~ 85°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)	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)	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	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active	Active	Active	Active
RoHS Status	—	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
REACH Status	—	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

All identified substitute parts are classified as active products with ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment and long-term availability. The STM706RM6F from STMicroelectronics provides the closest electrical match with identical reset timeout specification (140ms minimum) and full -40°C to 85°C operating range coverage.

The ADM706RARZ series from Analog Devices Inc. offers multiple packaging options (Tube, Cut Tape & Digi-Reel, and alternative reel configurations) with 160ms reset timeout specification, suitable for applications where slightly extended reset timing is acceptable. The DS1706RESA+ and DS1706RESA+T&R variants from the MicroMonitor™ series provide 130ms reset timeout with active product status and full environmental range support.

The MAX706ARESA+ and MAX706ARESA+T variants maintain 140ms reset timeout matching the original specification with full temperature range coverage. The MAX706RCSA+ and MAX706RCSA+T variants operate within a narrower 0°C to 70°C temperature range and are suitable only for applications not requiring the extended -40°C lower temperature limit.

Selection should prioritize parts matching the original -40°C to 85°C operating temperature range unless application requirements permit the narrower 0°C to 70°C specification. All substitute parts support identical voltage threshold (2.63V), active-low reset logic, and 8-SOIC surface mount packaging.

Frequently Asked Questions (FAQ)

Q: Can MAX706RCSA+ or MAX706RCSA+T be used as direct replacements for SP706REN-L?

A: These parts are functionally equivalent for voltage threshold, reset logic, and package specifications. However, they operate within 0°C to 70°C temperature range versus the original -40°C to 85°C specification. Use only in applications where the narrower temperature range is acceptable.

Q: What is the significance of the output type difference (Push-Pull/Totem Pole)?

A: The SP706REN-L output type is not specified in available documentation. All substitute parts feature Push-Pull/Totem Pole output configuration. Circuit designs must accommodate this active output stage rather than open-drain topology if originally designed for different output characteristics.

Q: Are there packaging differences between ADM706RARZ, ADM706RARZ-REEL, and ADM706RARZ-REEL7?

A: All three variants use identical 8-SOIC package and electrical specifications. Differences are in supplier packaging format: Tube, Cut Tape & Digi-Reel, and alternative reel configuration respectively. Electrical performance and PCB compatibility are identical.

Q: How do reset timeout variations affect substitution suitability?

A: Reset timeout specifications range from 130ms (DS1706 series) to 160ms (ADM706 series) versus 140ms for the original part. These variations affect power-on reset timing behavior. Select parts matching or exceeding the original 140ms specification unless circuit design accommodates shorter or longer reset delays.

Q: Which substitute offers the best long-term availability?

A: All identified substitutes are classified as active products. STM706RM6F, ADM706RARZ series, and MAX706ARESA+ variants show highest inventory levels (21,724, 15,100, and 39,159 units respectively) and represent established product lines from major manufacturers.

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