SP708EN-L Equivalent & Substitute Parts

Part Overview

The SP708EN-L is a single-channel power supply supervisor IC manufactured by MaxLinear, Inc., designed for power-on reset and simple reset applications. This device monitors a single voltage threshold and provides active high/active low reset output control. The SP708EN-L is currently discontinued at DiGi Electronics, making equivalent substitute parts necessary for ongoing design support and production requirements. Functionally equivalent alternatives from Analog Devices Inc. and Maxim Integrated maintain core supervisor functionality while offering active product status and improved availability.

Key Parameters

Parameter	SP708EN-L
Manufacturer	MaxLinear, Inc.
Category	Power Management (PMIC)
Type	Simple Reset/Power-On Reset
Number of Voltages Monitored	1
Voltage - Threshold	4.4V
Reset	Active High/Active Low
Reset Timeout	140ms Minimum
Operating Temperature	-40°C ~ 85°C (TA)
Mounting Type	Surface Mount
Package / Case	8-SOIC (0.154", 3.90mm Width)
RoHS Status	RoHS Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
Product Status	Discontinued at DiGi Electronics

Substitute Part Grouping Explanation

Substitution of the SP708EN-L is determined by the following critical parameters:

Matching Parameters (Required for Direct Substitution):

Single voltage monitoring channel
4.4V voltage threshold
Active High/Active Low reset capability
8-SOIC package form factor
Surface mount technology
Operating temperature range: -40°C ~ 85°C

Acceptable Variations:

Reset timeout: SP708EN-L specifies 140ms minimum; substitute parts with 160ms minimum remain functionally compatible for most applications
Output configuration: SP708EN-L output type unspecified; substitute parts with Push-Pull output provide enhanced drive capability
Product status: Active alternatives replace discontinued part

Voltage Threshold Constraint: Parts with different voltage thresholds (2.63V, 2.93V) are not direct substitutes for the 4.4V threshold requirement and are excluded from this equivalency list.

Parameter Comparison

Part Number	Manufacturer	Voltage Threshold	Reset Timeout	Operating Temperature	Output Type	Package	Product Status	RoHS Status
SP708EN-L	MaxLinear, Inc.	4.4V	140ms Min	-40°C ~ 85°C	Not Specified	8-SOIC	Discontinued	RoHS Compliant
MAX708ESA+T	Analog Devices Inc./Maxim Integrated	4.4V	140ms Min	-40°C ~ 85°C	Push-Pull	8-SOIC	Active	ROHS3 Compliant
MAX708ESA+	Analog Devices Inc./Maxim Integrated	4.4V	140ms Min	-40°C ~ 85°C	Push-Pull	8-SOIC	Active	ROHS3 Compliant
MAX708CSA+T	Analog Devices Inc./Maxim Integrated	4.4V	140ms Min	0°C ~ 70°C	Push-Pull	8-SOIC	Active	ROHS3 Compliant
MAX708CSA+	Analog Devices Inc./Maxim Integrated	4.4V	140ms Min	0°C ~ 70°C	Push-Pull	8-SOIC	Active	ROHS3 Compliant
ADM708ARZ	Analog Devices Inc.	4.4V	160ms Min	-40°C ~ 85°C	Push-Pull	8-SOIC	Active	ROHS3 Compliant
ADM708ARZ-REEL	Analog Devices Inc.	4.4V	160ms Min	-40°C ~ 85°C	Push-Pull	8-SOIC	Active	ROHS3 Compliant

Engineering Selection Recommendations

Primary Recommendation: MAX708ESA+T

The MAX708ESA+T is the optimal substitute for SP708EN-L applications requiring full temperature range operation (-40°C ~ 85°C). This part maintains identical voltage threshold (4.4V) and reset timeout (140ms minimum) specifications. Active product status ensures long-term availability and supply chain stability. ROHS3 compliance exceeds the original RoHS requirement. Cut Tape & Digi-Reel packaging supports both prototype and production volumes with 61,050 units in stock.

Alternative for Commercial Temperature Range: MAX708CSA+T

For applications operating within 0°C ~ 70°C, the MAX708CSA+T provides equivalent electrical performance with reduced operating temperature range. This variant maintains 4.4V threshold and 140ms reset timeout. Use only when application temperature requirements do not exceed the specified commercial range.

Extended Reset Timeout Alternative: ADM708ARZ / ADM708ARZ-REEL

The ADM708ARZ series offers 160ms minimum reset timeout (20ms longer than SP708EN-L) while maintaining 4.4V threshold and full -40°C ~ 85°C temperature range. This extended timeout is functionally compatible for applications where longer power-on reset sequencing is acceptable. Available in both tube and Digi-Reel packaging formats.

Selection Criteria:

Full industrial temperature range required: Select MAX708ESA+T or ADM708ARZ series
Commercial temperature range acceptable: Select MAX708CSA+T
Extended reset timing acceptable: Select ADM708ARZ variants
High-volume production: Prioritize parts with highest inventory availability

Frequently Asked Questions (FAQ)

Q: Can MAX708CSA+T replace SP708EN-L in all applications?

A: MAX708CSA+T is electrically equivalent for voltage threshold and reset timeout but operates only within 0°C ~ 70°C. Use only if your application does not require the full -40°C ~ 85°C industrial temperature range of the original part.

Q: What is the difference between MAX708ESA+ and MAX708ESA+T?

A: Both parts are electrically identical with 4.4V threshold and 140ms reset timeout. MAX708ESA+T is supplied in Cut Tape & Digi-Reel packaging, while MAX708ESA+ is supplied in tube packaging. Select based on your procurement and assembly requirements.

Q: Why do ADM708ARZ parts have 160ms reset timeout instead of 140ms?

A: The ADM708ARZ series specifies 160ms minimum reset timeout, which is 20ms longer than SP708EN-L. This extended timeout remains functionally compatible for most supervisor applications and does not prevent substitution. Verify your application does not require the shorter 140ms timeout before selection.

Q: Are all substitute parts RoHS compliant?

A: Yes. All listed substitute parts meet ROHS3 compliance, which exceeds the original SP708EN-L RoHS requirement.

Q: What is the difference between tube and Digi-Reel packaging?

A: Tube packaging is standard for prototype and small-volume applications. Cut Tape & Digi-Reel packaging is optimized for automated assembly and high-volume production. Both formats contain identical components; selection depends on your manufacturing process.

Q: Can I use ADM708RARZ or ADM708SARZ as substitutes?

A: No. ADM708RARZ (2.63V threshold) and ADM708SARZ (2.93V threshold) have different voltage monitoring thresholds and are not equivalent to SP708EN-L (4.4V threshold). Use only parts with 4.4V threshold specification.

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