SP708TCN-L Equivalent & Substitute Parts

Part Overview

The SP708TCN-L is a single-channel power management supervisor IC manufactured by MaxLinear, Inc., housed in an 8-SOIC surface mount package. This device functions as a simple reset/power-on reset supervisor with a 3.08V voltage threshold and 140ms minimum reset timeout, operating across the 0°C to 70°C temperature range. The part is currently discontinued at DiGi Electronics, making equivalent substitutes necessary for ongoing design support and production continuity.

Key Parameters

Parameter	SP708TCN-L
Manufacturer	MaxLinear, Inc.
Category	Power Management (PMIC)
Type	Simple Reset/Power-On Reset
Number of Voltages Monitored	1
Voltage - Threshold	3.08V
Reset	Active High/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)
Product Status	Discontinued at DiGi Electronics

Substitute Part Grouping Explanation

Substitution eligibility for the SP708TCN-L is determined by the following critical parameters:

Voltage threshold: 3.08V (exact match required)
Package type: 8-SOIC form factor (mechanical and electrical compatibility)
Functional type: Simple reset/power-on reset supervisor with single-channel monitoring
Reset logic: Active High/Active Low capability
Reset timeout: Minimum 140ms or greater
Mounting type: Surface mount
RoHS compliance status

All substitute parts listed below meet these core electrical and mechanical requirements. Variations in operating temperature range, output stage configuration (push-pull vs. complementary), and reset timeout specifications above the minimum threshold do not prevent functional substitution in applications designed for the SP708TCN-L.

Parameter Comparison

Part Number	Manufacturer	Voltage Threshold	Reset Timeout	Operating Temperature	Output Type	Package	Product Status	RoHS Status
SP708TCN-L	MaxLinear, Inc.	3.08V	140ms Min	0°C ~ 70°C	—	8-SOIC	Discontinued	RoHS Compliant
STM708TM6F	STMicroelectronics	3.08V	140ms Min	-40°C ~ 85°C	Push-Pull, Totem Pole	8-SOIC	Active	ROHS3 Compliant
ADM708TARZ	Analog Devices Inc.	3.08V	160ms Min	-40°C ~ 85°C	Push-Pull, Push-Pull	8-SOIC	Active	ROHS3 Compliant
ADM708TARZ-REEL	Analog Devices Inc.	3.08V	160ms Min	-40°C ~ 85°C	Push-Pull, Push-Pull	8-SOIC	Active	ROHS3 Compliant
DS1708TESA+	Analog Devices Inc./Maxim Integrated	3.08V	130ms Min	-40°C ~ 85°C	Push-Pull, Push-Pull	8-SOIC	Active	ROHS3 Compliant
DS1708TESA+T&R	Analog Devices Inc./Maxim Integrated	3.08V	130ms Min	-40°C ~ 85°C	Push-Pull, Push-Pull	8-SOIC	Active	ROHS3 Compliant
MAX708TCSA+	Analog Devices Inc./Maxim Integrated	3.08V	140ms Min	0°C ~ 70°C	Push-Pull, Push-Pull	8-SOIC	Active	ROHS3 Compliant
MAX708TCSA+T	Analog Devices Inc./Maxim Integrated	3.08V	140ms Min	0°C ~ 70°C	Push-Pull, Push-Pull	8-SOIC	Active	ROHS3 Compliant
MAX708TESA+	Analog Devices Inc./Maxim Integrated	3.08V	140ms Min	-40°C ~ 85°C	Push-Pull, Push-Pull	8-SOIC	Active	ROHS3 Compliant
MAX708TESA+T	Analog Devices Inc./Maxim Integrated	3.08V	140ms Min	-40°C ~ 85°C	Push-Pull, Push-Pull	8-SOIC	Active	ROHS3 Compliant
MIC708TMY	Microchip Technology	3.08V	140ms Min	-40°C ~ 85°C	Complementary	8-SOIC	Active	ROHS3 Compliant

Engineering Selection Recommendations

All listed substitute parts maintain the 3.08V voltage threshold and 8-SOIC package form factor required for direct replacement of the SP708TCN-L. Selection among active alternatives should prioritize parts with current product status and ROHS3 compliance certification for long-term supply chain stability.

For applications operating within the original 0°C to 70°C temperature specification, MAX708TCSA+ and MAX708TCSA+T variants provide the closest electrical match with identical reset timeout characteristics. These parts are actively manufactured and available in high inventory quantities.

For applications requiring extended operating temperature range (-40°C to 85°C), MAX708TESA+, MAX708TESA+T, STM708TM6F, ADM708TARZ, ADM708TARZ-REEL, DS1708TESA+, DS1708TESA+T&R, and MIC708TMY all qualify as functional substitutes. The DS1708 series offers the shortest reset timeout at 130ms minimum, while ADM708 variants specify 160ms minimum timeout.

Output stage configuration differences (push-pull vs. complementary) do not prevent substitution provided the application circuit design accommodates the specific output characteristics of the selected part.

Frequently Asked Questions (FAQ)

Q: Can I substitute the SP708TCN-L with any of these parts without circuit modification?

A: All listed parts share the identical 3.08V voltage threshold, 8-SOIC package, and single-channel reset/power-on reset functionality. Direct pin-for-pin substitution is possible. However, output stage configuration varies between parts (push-pull or complementary). Verify that your circuit design accommodates the output characteristics of the selected substitute.

Q: What is the difference between the MAX708TCSA+ and MAX708TESA+ variants?

A: Both maintain the 3.08V threshold and 140ms reset timeout. The primary difference is operating temperature range: MAX708TCSA+ operates 0°C to 70°C, while MAX708TESA+ operates -40°C to 85°C. Select based on your application's thermal requirements.

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

A: Reset timeout specifications represent the minimum guaranteed delay. Parts with 160ms or 130ms minimum timeouts exceed the SP708TCN-L's 140ms requirement and remain functionally compatible. Longer timeouts provide additional margin in power-on sequencing.

Q: Does packaging format (tube vs. tape & reel) affect electrical compatibility?

A: No. Packaging format affects only handling, storage, and assembly logistics. Electrically and mechanically, parts with identical part numbers but different packaging designations (such as ADM708TARZ vs. ADM708TARZ-REEL) are equivalent.

Q: Are all substitutes RoHS compliant?

A: The original SP708TCN-L is RoHS Compliant. All active substitute parts listed carry ROHS3 Compliant certification, meeting current regulatory requirements.

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