SP706RCN-L Equivalent & Substitute Parts

Part Overview

The SP706RCN-L is a single-channel power management supervisor IC manufactured by MaxLinear, Inc., designed for power-on reset and simple reset applications. This part is discontinued at DiGi Electronics but remains available through inventory channels. Due to its discontinued status, equivalent supervisor ICs with matching electrical and mechanical specifications are necessary for design continuity and production support. Substitute parts maintain the same voltage threshold, reset polarity, and package form factor while offering extended temperature ranges and active product status from alternative manufacturers.

Key Parameters

Parameter	SP706RCN-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	0°C ~ 70°C (TA)
Package / Case	8-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
RoHS Status	RoHS Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following critical parameters:

Voltage Threshold (2.63V): All substitute parts must monitor the same supply voltage threshold to ensure equivalent reset behavior.
Reset Polarity (Active Low): Reset output must be active low to maintain circuit compatibility.
Package Form Factor (8-SOIC): Physical and electrical compatibility requires identical SOIC package dimensions.
Mounting Type (Surface Mount): All substitutes use surface mount technology.
Single Channel Supervision: All parts monitor one voltage rail.

Substitute parts are grouped into two categories based on output configuration:

Category 1: Push-Pull/Totem Pole Output — STM706RM6F, ADM706RARZ, ADM706RARZ-REEL, ADM706RARZ-REEL7, DS1706RESA+, DS1706RESA+T&R, MAX706ARESA+, MAX706ARESA+T, MAX706RCSA+, MAX706RCSA+T

These parts feature push-pull output stages, providing enhanced drive capability compared to the original SP706RCN-L open-drain output. All maintain the 2.63V threshold and active-low reset polarity.

Parameter Comparison

Part Number	Manufacturer	Voltage Threshold	Reset Polarity	Reset Timeout (Min)	Operating Temperature	Output Type	Package	Product Status
SP706RCN-L	MaxLinear, Inc.	2.63V	Active Low	140ms	0°C ~ 70°C	Open Drain	8-SOIC	Discontinued
STM706RM6F	STMicroelectronics	2.63V	Active Low	140ms	-40°C ~ 85°C	Push-Pull, Totem Pole	8-SOIC	Active
ADM706RARZ	Analog Devices Inc.	2.63V	Active Low	160ms	-40°C ~ 85°C	Push-Pull, Totem Pole	8-SOIC	Active
ADM706RARZ-REEL	Analog Devices Inc.	2.63V	Active Low	160ms	-40°C ~ 85°C	Push-Pull, Totem Pole	8-SOIC	Active
ADM706RARZ-REEL7	Analog Devices Inc.	2.63V	Active Low	160ms	-40°C ~ 85°C	Push-Pull, Totem Pole	8-SOIC	Active
DS1706RESA+	Analog Devices Inc./Maxim Integrated	2.63V	Active Low	130ms	-40°C ~ 85°C	Push-Pull, Totem Pole	8-SOIC	Active
DS1706RESA+T&R	Analog Devices Inc./Maxim Integrated	2.63V	Active Low	130ms	-40°C ~ 85°C	Push-Pull, Totem Pole	8-SOIC	Active
MAX706ARESA+	Analog Devices Inc./Maxim Integrated	2.63V	Active Low	140ms	-40°C ~ 85°C	Push-Pull, Totem Pole	8-SOIC	Active
MAX706ARESA+T	Analog Devices Inc./Maxim Integrated	2.63V	Active Low	140ms	-40°C ~ 85°C	Push-Pull, Totem Pole	8-SOIC	Active
MAX706RCSA+	Analog Devices Inc./Maxim Integrated	2.63V	Active Low	140ms	0°C ~ 70°C	Push-Pull, Totem Pole	8-SOIC	Active
MAX706RCSA+T	Analog Devices Inc./Maxim Integrated	2.63V	Active Low	140ms	0°C ~ 70°C	Push-Pull, Totem Pole	8-SOIC	Active

Engineering Selection Recommendations

For Standard Industrial Applications (0°C ~ 70°C):

MAX706RCSA+ and MAX706RCSA+T are direct temperature-range equivalents to the SP706RCN-L. Both parts maintain the original operating temperature specification while providing active product status and ROHS3 compliance. MAX706RCSA+T offers cut-tape and digi-reel packaging for automated assembly.

For Extended Temperature Range Applications (-40°C ~ 85°C):

STM706RM6F, ADM706RARZ series, DS1706RESA+ series, and MAX706ARESA+ series extend the operating temperature envelope. These parts are suitable for industrial and automotive-grade applications requiring wider temperature tolerance. All maintain ROHS3 compliance and REACH unaffected status.

For Reset Timeout Criticality:

DS1706RESA+ and DS1706RESA+T&R provide the shortest reset timeout at 130ms minimum, compared to the original 140ms specification. ADM706RARZ series specifies 160ms minimum timeout. Applications with strict reset timing requirements should reference detailed datasheets for timing behavior.

For Packaging and Supply Chain:

All substitute parts are available in active product status with established supply channels. Reel packaging options (ADM706RARZ-REEL, ADM706RARZ-REEL7, MAX706RCSA+T, DS1706RESA+T&R) support high-volume automated assembly. Tube packaging options (ADM706RARZ, DS1706RESA+, MAX706ARESA+, MAX706RCSA+) support lower-volume or manual assembly workflows.

Frequently Asked Questions (FAQ)

Q: Can I substitute SP706RCN-L with any of these parts without circuit modification?

A: Yes, all listed substitute parts maintain the same 2.63V threshold, active-low reset polarity, and 8-SOIC package. However, the output stage differs: SP706RCN-L uses open-drain output, while all substitutes use push-pull/totem-pole output. This change typically improves reset signal integrity and drive capability. Verify your circuit does not depend on open-drain behavior (such as wired-OR configurations).

Q: What is the difference between ADM706RARZ, ADM706RARZ-REEL, and ADM706RARZ-REEL7?

A: These are the same part with different packaging and tape configurations. ADM706RARZ is supplied in tube packaging. ADM706RARZ-REEL and ADM706RARZ-REEL7 are supplied on cut-tape and digi-reel for automated pick-and-place assembly. Select based on your assembly process requirements.

Q: Why do some substitutes have different reset timeout specifications?

A: Reset timeout is the minimum duration the reset output remains asserted after power supply stabilization. DS1706RESA+ specifies 130ms, while ADM706RARZ specifies 160ms, compared to the original 140ms. These variations are within normal supervisor IC design tolerances. Verify your application does not have critical timing dependencies on the exact reset pulse width.

Q: Are all substitute parts RoHS and REACH compliant?

A: Yes, all listed substitute parts carry ROHS3 compliance and REACH unaffected status, matching or exceeding the original SP706RCN-L RoHS compliance level.

Q: Which substitute should I choose for new designs?

A: For new designs requiring standard industrial temperature range (0°C ~ 70°C), MAX706RCSA+ or MAX706RCSA+T are recommended as direct equivalents with active product status. For extended temperature applications, STM706RM6F or ADM706RARZ series provide -40°C ~ 85°C operation. All parts are electrically and mechanically compatible with the original SP706RCN-L footprint.

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