MIC706RM Equivalent & Substitute Parts

Part Overview

The MIC706RM is a single-channel power management supervisor IC manufactured by Microchip Technology, housed in an 8-SOIC surface mount package. This device provides reset and power-on reset functionality with a 2.63V threshold and 140ms minimum reset timeout. The MIC706RM is discontinued at DiGi Electronics, making equivalent substitute parts necessary for ongoing design support and production requirements. Suitable alternatives maintain the same electrical characteristics and package footprint while offering active product status and improved compliance certifications.

Key Parameters

Parameter	MIC706RM Value
Manufacturer	Microchip Technology
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 Range	-40°C ~ 85°C (TA)
Package / Case	8-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
RoHS Status	RoHS non-compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict alignment with the following critical parameters:

Package / Case: 8-SOIC (0.154", 3.90mm Width) — mechanical and electrical compatibility
Mounting Type: Surface Mount — PCB assembly compatibility
Number of Voltages Monitored: 1 — functional equivalence
Reset Type: Active Low — logic compatibility
Operating Temperature Range: -40°C ~ 85°C (TA) — thermal envelope compatibility
Voltage Threshold: 2.63V — direct functional replacement
Reset Timeout: 140ms Minimum — timing specification compatibility

Substitute parts are grouped into two categories:

Direct Electrical Equivalents (2.63V Threshold, 140ms Timeout): Parts meeting all critical parameters without deviation, ensuring drop-in replacement capability.

Functional Equivalents with Parameter Variations: Parts sharing the same package, mounting type, and reset logic but with different voltage thresholds or reset timeouts. These require design review to confirm compatibility with the target application.

Parameter Comparison

Part Number	Manufacturer	Voltage Threshold	Output Type	Reset Timeout	Operating Temp Range	Product Status	RoHS Status	Packaging
MIC706RM	Microchip Technology	2.63V	—	140ms Min	-40°C ~ 85°C	Discontinued	RoHS non-compliant	Bulk
MIC706RMY	Microchip Technology	2.63V	—	140ms Min	-40°C ~ 85°C	Active	ROHS3 Compliant	Tube
STM706RM6F	STMicroelectronics	2.63V	Push-Pull, Totem Pole	140ms Min	-40°C ~ 85°C	Active	ROHS3 Compliant	Cut Tape (CT) & Digi-Reel®
ADM706RARZ	Analog Devices Inc.	2.63V	Push-Pull, Totem Pole	160ms Min	-40°C ~ 85°C	Active	ROHS3 Compliant	Tube
ADM706ARZ-REEL7	Analog Devices Inc.	4.4V	Push-Pull, Totem Pole	160ms Min	-40°C ~ 85°C	Active	ROHS3 Compliant	Cut Tape (CT) & Digi-Reel®
MAX706RCSA+	Analog Devices Inc./Maxim Integrated	2.63V	Push-Pull, Totem Pole	140ms Min	0°C ~ 70°C	Active	ROHS3 Compliant	Tube
MAX706RCSA+T	Analog Devices Inc./Maxim Integrated	2.63V	Push-Pull, Totem Pole	140ms Min	0°C ~ 70°C	Active	ROHS3 Compliant	Cut Tape (CT) & Digi-Reel®
MAX706RESA+	Analog Devices Inc./Maxim Integrated	2.63V	Push-Pull, Totem Pole	140ms Min	-40°C ~ 85°C	Active	ROHS3 Compliant	Tube
MAX706RESA+T	Analog Devices Inc./Maxim Integrated	2.63V	Push-Pull, Totem Pole	140ms Min	-40°C ~ 85°C	Active	ROHS3 Compliant	Cut Tape (CT) & Digi-Reel®
TPS3705-33D	Texas Instruments	2.93V	Push-Pull, Totem Pole	140ms Min	-40°C ~ 85°C	Active	ROHS3 Compliant	Tube
TPS3705-50D	Texas Instruments	4.55V	Push-Pull, Totem Pole	140ms Min	-40°C ~ 85°C	Active	ROHS3 Compliant	Tube

Engineering Selection Recommendations

Primary Substitutes (Direct Electrical Equivalents):

MIC706RMY, MAX706RESA+, and MAX706RESA+T are direct electrical equivalents to the MIC706RM, matching the 2.63V threshold, 140ms reset timeout, and -40°C to 85°C operating range. All three are ROHS3 compliant and carry active product status. MIC706RMY maintains Microchip Technology as the original manufacturer. MAX706RESA+ and MAX706RESA+T offer extended availability through Analog Devices Inc./Maxim Integrated, with the +T variant supplied in Cut Tape format for automated assembly.

Secondary Substitutes (Compatible with Design Review):

STM706RM6F matches all critical electrical parameters and operating temperature range but features Push-Pull Totem Pole output versus the MIC706RM's unspecified output type. This output configuration difference requires confirmation of circuit compatibility.

ADM706RARZ maintains the 2.63V threshold and -40°C to 85°C operating range but specifies 160ms minimum reset timeout, exceeding the MIC706RM's 140ms specification. Applications with strict timing requirements must confirm this extended timeout is acceptable.

MAX706RCSA+ and MAX706RCSA+T match electrical parameters but operate within a narrower temperature range (0°C to 70°C), unsuitable for applications requiring the full -40°C to 85°C envelope.

Not Recommended for Direct Substitution:

ADM706ARZ-REEL7 and TPS3705-50D feature significantly different voltage thresholds (4.4V and 4.55V respectively) and are not suitable for applications designed around the 2.63V threshold specification.

TPS3705-33D features a 2.93V threshold, introducing a 0.3V deviation from the MIC706RM specification and requiring application-level compatibility assessment.

Frequently Asked Questions (FAQ)

Q: Can MIC706RMY directly replace MIC706RM in existing designs?

A: Yes. MIC706RMY is electrically and mechanically identical to MIC706RM, with the same 2.63V threshold, 140ms reset timeout, and -40°C to 85°C operating range. The primary difference is packaging format (Tube versus Bulk) and improved RoHS3 compliance status. No circuit modifications are required.

Q: What is the significance of the Push-Pull Totem Pole output in STM706RM6F?

A: The MIC706RM does not specify an output type in the provided data. STM706RM6F explicitly features Push-Pull Totem Pole output, which provides active high and active low drive capability. Designs expecting open-drain or open-collector output must confirm circuit compatibility before substitution.

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

A: Reset timeout is a device-specific parameter determined by internal timing circuitry. ADM706RARZ specifies 160ms minimum versus the MIC706RM's 140ms. Applications with timing-critical reset sequencing must confirm the extended timeout does not violate system requirements.

Q: Are parts with different voltage thresholds usable in MIC706RM applications?

A: No. Voltage threshold determines the supply voltage level at which the supervisor triggers a reset. ADM706ARZ-REEL7 (4.4V) and TPS3705-50D (4.55V) are designed for different supply voltage ranges and are not suitable for 2.63V threshold applications. TPS3705-33D (2.93V) introduces a 0.3V deviation and requires application-level validation.

Q: What is the difference between Cut Tape and Tube packaging?

A: Tube packaging supplies components in plastic tubes suitable for manual handling and small-volume assembly. Cut Tape (CT) & Digi-Reel® packaging supplies components on continuous tape suitable for automated pick-and-place assembly equipment. Both formats contain identical components; packaging selection depends on assembly process requirements.

Q: Why is operating temperature range important for substitution?

A: Operating temperature range defines the thermal envelope in which the device functions within specification. MAX706RCSA+ and MAX706RCSA+T operate only from 0°C to 70°C, excluding the -40°C lower bound of the MIC706RM. Applications requiring full -40°C to 85°C operation must use parts specifying this extended range.

Q: Are all substitute parts RoHS3 compliant?

A: All substitute parts listed are ROHS3 compliant. The original MIC706RM is RoHS non-compliant. Designs subject to RoHS compliance requirements must transition to compliant alternatives such as MIC706RMY, MAX706RESA+, or STM706RM6F.

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