MIC708RM-TR Equivalent & Substitute Parts

Part Overview

The MIC708RM-TR is a single-channel power management supervisor IC manufactured by Microchip Technology, designed for power-on reset and simple reset applications. This device monitors a single voltage threshold at 2.63V with complementary output configuration and a 140ms minimum reset timeout. The MIC708RM-TR is discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives from active product lines. Substitute parts must maintain identical electrical specifications and package compatibility to ensure direct replacement capability in existing designs.

Key Parameters

Parameter	MIC708RM-TR
Manufacturer	Microchip Technology
Category	Power Management (PMIC)
Type	Simple Reset/Power-On Reset
Number of Voltages Monitored	1
Voltage - Threshold	2.63V
Output Configuration	Complementary
Reset Logic	Active High/Active Low
Reset Timeout	140ms Minimum
Package / Case	8-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
Operating Temperature Range	-40°C ~ 85°C (TA)
Product Status	Discontinued

Substitute Part Grouping Explanation

Substitution of the MIC708RM-TR is determined by the following critical parameters:

Voltage Threshold: 2.63V (single channel monitoring)
Package: 8-SOIC form factor with identical 0.154" width and 3.90mm dimensions
Reset Type: Simple Reset/Power-On Reset functionality
Reset Timeout: 140ms minimum
Reset Logic: Active High/Active Low capability
Mounting: Surface mount configuration

The MAX708 series from Analog Devices Inc./Maxim Integrated provides functionally equivalent alternatives. All substitute parts maintain the 2.63V threshold, 140ms reset timeout, and 8-SOIC package specification. Output configuration differences (Push-Pull vs. Complementary) and operating temperature ranges vary across substitute options, requiring design-level verification for specific application requirements.

Parameter Comparison

Parameter	MIC708RM-TR	MAX708RCSA+	MAX708RCSA+T	MAX708RESA+	MAX708RESA+T
Manufacturer	Microchip Technology	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
Number of Voltages Monitored	1	1	1	1	1
Voltage - Threshold	2.63V	2.63V	2.63V	2.63V	2.63V
Reset Logic	Active High/Active Low	Active High/Active Low	Active High/Active Low	Active High/Active Low	Active High/Active Low
Reset Timeout	140ms Minimum	140ms Minimum	140ms Minimum	140ms Minimum	140ms Minimum
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)
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Operating Temperature Range	-40°C ~ 85°C	0°C ~ 70°C	0°C ~ 70°C	-40°C ~ 85°C	-40°C ~ 85°C
Product Status	Discontinued	Active	Active	Active	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Primary Substitutes (Extended Temperature Range)

MAX708RESA+ and MAX708RESA+T are the preferred substitutes for applications requiring the full -40°C to 85°C operating temperature range matching the MIC708RM-TR. Both variants maintain identical electrical specifications and package configuration. MAX708RESA+T is supplied in Cut Tape & Digi-Reel packaging with 18,100 units in stock, while MAX708RESA+ is supplied in Tube packaging with 3,600 units available. Both are ROHS3 compliant.

Secondary Substitutes (Commercial Temperature Range)

MAX708RCSA+ and MAX708RCSA+T are suitable for applications operating within the 0°C to 70°C temperature range. MAX708RCSA+T is supplied in Tape & Reel packaging with 12,200 units in stock, while MAX708RCSA+ is supplied in Tube packaging with 1,110 units available. Both are ROHS3 compliant and represent the highest inventory availability among substitute options.

Compliance Consideration

All substitute parts are ROHS3 compliant, whereas the MIC708RM-TR is RoHS non-compliant. This compliance upgrade may be advantageous for new designs or applications subject to environmental regulations.

Frequently Asked Questions (FAQ)

Q: Can MAX708RCSA+ or MAX708RCSA+T be used in applications requiring -40°C operation?

A: No. MAX708RCSA+ and MAX708RCSA+T are rated for 0°C to 70°C operation only. For applications requiring -40°C to 85°C operation, use MAX708RESA+ or MAX708RESA+T.

Q: What is the difference between Tube and Tape & Reel packaging for the MAX708 series?

A: Tube packaging (MAX708RCSA+, MAX708RESA+) is suitable for lower-volume applications and manual assembly. Tape & Reel packaging (MAX708RCSA+T, MAX708RESA+T) is optimized for automated pick-and-place assembly. Both packaging formats contain identical die and electrical specifications.

Q: Are all substitute parts pin-compatible with the MIC708RM-TR?

A: Yes. All substitute parts use the 8-SOIC package with identical pin configuration and spacing (0.154" width, 3.90mm dimensions), enabling direct PCB replacement.

Q: What is the difference between Complementary and Push-Pull output configurations?

A: The MIC708RM-TR features Complementary output, while all MAX708 substitutes feature Push-Pull output. Both configurations provide Active High/Active Low reset logic. Design verification is required to confirm output configuration compatibility with existing reset circuitry.

Q: Why is inventory availability different across substitute part numbers?

A: Inventory levels reflect current stock at the supplier. MAX708RESA+T (Cut Tape & Digi-Reel) has the highest availability at 18,100 units, followed by MAX708RCSA+T (Tape & Reel) at 12,200 units. Availability should be confirmed at time of procurement.

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