MIC706M-TR Equivalent & Substitute Parts

Part Overview

The MIC706M-TR is a single-channel power supply supervisor IC manufactured by Microchip Technology, housed in an 8-SOIC surface mount package. This device monitors a single voltage rail and provides active-low reset output with a 140ms minimum reset timeout. The MIC706M-TR is discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives from active product lines. Substitute parts must maintain compatibility across voltage threshold, reset polarity, package form factor, and operating temperature range to ensure direct replacement capability in existing designs.

Key Parameters

Parameter	MIC706M-TR Value
Manufacturer	Microchip Technology
Category	Power Management (PMIC)
Type	Simple Reset/Power-On Reset
Number of Voltages Monitored	1
Voltage - Threshold	4.4V
Reset Polarity	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
Product Status	Discontinued at DiGi Electronics
RoHS Status	RoHS non-compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the MIC706M-TR is determined by the following critical parameters:

Primary Compatibility Criteria:

Voltage threshold: 4.4V
Reset polarity: Active Low
Package: 8-SOIC (0.154", 3.90mm Width)
Single voltage monitoring channel
Surface mount configuration

Secondary Compatibility Criteria:

Operating temperature range: -40°C ~ 85°C (TA) preferred for full compatibility
Reset timeout: 140ms minimum or greater
Output type: Open-drain or push-pull/totem-pole configurations both acceptable
RoHS compliance: ROHS3 compliant alternatives preferred for new designs

Substitute parts are grouped into two categories: direct replacements with identical electrical specifications and functional equivalents with compatible but differing output stages or reset timeout values. All listed substitutes maintain the 4.4V threshold, active-low reset, and 8-SOIC package required for pin-compatible replacement.

Parameter Comparison

Part Number	Manufacturer	Voltage Threshold	Reset Polarity	Reset Timeout (Min)	Operating Temp	Output Type	Package	Product Status	RoHS Status
MIC706M-TR	Microchip Technology	4.4V	Active Low	140ms	-40°C ~ 85°C	Open-Drain	8-SOIC	Discontinued	RoHS non-compliant
ADM706ARZ	Analog Devices Inc.	4.4V	Active Low	160ms	-40°C ~ 85°C	Push-Pull, Totem Pole	8-SOIC	Active	ROHS3 Compliant
ADM706ARZ-REEL	Analog Devices Inc.	4.4V	Active Low	160ms	-40°C ~ 85°C	Push-Pull, Totem Pole	8-SOIC	Active	ROHS3 Compliant
ADM706ARZ-REEL7	Analog Devices Inc.	4.4V	Active Low	160ms	-40°C ~ 85°C	Push-Pull, Totem Pole	8-SOIC	Active	ROHS3 Compliant
DS1706ESA+	Analog Devices Inc./Maxim Integrated	4.4V	Active Low	130ms	-40°C ~ 85°C	Push-Pull, Totem Pole	8-SOIC	Active	ROHS3 Compliant
MAX706CSA+	Analog Devices Inc./Maxim Integrated	4.4V	Active Low	140ms	0°C ~ 70°C	Push-Pull, Totem Pole	8-SOIC	Active	ROHS3 Compliant
MAX706CSA+T	Analog Devices Inc./Maxim Integrated	4.4V	Active Low	140ms	0°C ~ 70°C	Push-Pull, Totem Pole	8-SOIC	Active	ROHS3 Compliant
MAX706ESA+	Analog Devices Inc./Maxim Integrated	4.4V	Active Low	140ms	-40°C ~ 85°C	Push-Pull, Totem Pole	8-SOIC	Active	ROHS3 Compliant
MAX706ESA+T	Analog Devices Inc./Maxim Integrated	4.4V	Active Low	140ms	-40°C ~ 85°C	Push-Pull, Totem Pole	8-SOIC	Active	ROHS3 Compliant
MAX706TCSA+	Analog Devices Inc./Maxim Integrated	3.08V	Active Low	140ms	0°C ~ 70°C	Push-Pull, Totem Pole	8-SOIC	Active	ROHS3 Compliant
MAX706TCSA+T	Analog Devices Inc./Maxim Integrated	3.08V	Active Low	140ms	0°C ~ 70°C	Push-Pull, Totem Pole	8-SOIC	Active	ROHS3 Compliant

Engineering Selection Recommendations

Tier 1 - Full Compatibility (Recommended for Direct Replacement):

MAX706ESA+ and MAX706ESA+T are the primary recommended substitutes. Both maintain the 4.4V threshold, 140ms reset timeout, -40°C ~ 85°C operating range, and 8-SOIC package of the MIC706M-TR. These parts are active products with ROHS3 compliance. The primary difference is output configuration (push-pull/totem-pole versus open-drain), which is functionally compatible in most applications. MAX706ESA+T offers cut-tape packaging with Digi-Reel option for higher volume availability (30,300 units in stock).

Tier 2 - Compatible with Minor Deviations:

ADM706ARZ, ADM706ARZ-REEL, and ADM706ARZ-REEL7 provide 4.4V threshold and -40°C ~ 85°C operation but specify 160ms minimum reset timeout (20ms longer than MIC706M-TR). These are suitable for applications where extended reset timing is acceptable. ADM706ARZ-REEL7 offers the highest inventory availability (27,036 units).

DS1706ESA+ maintains full temperature and threshold compatibility but specifies 130ms minimum reset timeout (10ms shorter than MIC706M-TR). This part is suitable for applications where faster reset assertion is acceptable.

Tier 3 - Limited Compatibility (Temperature or Threshold Mismatch):

MAX706CSA+, MAX706CSA+T, MAX706TCSA+, and MAX706TCSA+T are not recommended as direct replacements. MAX706CSA variants operate only to 0°C ~ 70°C (narrower than -40°C ~ 85°C requirement). MAX706TCSA variants feature 3.08V threshold (incompatible with 4.4V requirement). These parts are suitable only for applications with relaxed temperature or voltage requirements.

Compliance Consideration:

All recommended substitutes are ROHS3 compliant, addressing the RoHS non-compliance status of the discontinued MIC706M-TR. This compliance improvement is beneficial for new designs and regulatory requirements.

Frequently Asked Questions (FAQ)

Q: Can MAX706ESA+ directly replace MIC706M-TR in existing designs?

A: Yes. Both parts share identical voltage threshold (4.4V), reset polarity (active low), reset timeout (140ms minimum), operating temperature range (-40°C ~ 85°C), and 8-SOIC package. The output stage differs (push-pull versus open-drain), but this is functionally compatible in standard reset circuit applications. Pin compatibility is maintained.

Q: What is the difference between ADM706ARZ, ADM706ARZ-REEL, and ADM706ARZ-REEL7?

A: These three part numbers are electrically identical. The differences are packaging format and supplier reel configuration. ADM706ARZ ships in tube packaging. ADM706ARZ-REEL and ADM706ARZ-REEL7 both use cut-tape with Digi-Reel packaging, with REEL7 indicating a specific reel configuration. Selection depends on procurement volume and assembly line requirements.

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

A: Reset timeout variation reflects different IC designs from different manufacturers. ADM706ARZ specifies 160ms (20ms longer), while DS1706ESA+ specifies 130ms (10ms shorter). These variations are within acceptable ranges for most power management applications. Verify application-specific reset timing requirements before selection.

Q: Are MAX706TCSA+ and MAX706TCSA+T suitable replacements?

A: No. These parts feature 3.08V voltage threshold, which is incompatible with the MIC706M-TR requirement of 4.4V. Additionally, operating temperature is limited to 0°C ~ 70°C versus the required -40°C ~ 85°C. These parts are not pin-compatible substitutes.

Q: What is the significance of the "+T" suffix in part numbers like MAX706ESA+T?

A: The "+T" suffix indicates cut-tape packaging with Digi-Reel option, as opposed to tube packaging (no suffix). Electrically and functionally, these parts are identical. Selection depends on assembly process requirements and volume needs. MAX706ESA+T offers significantly higher inventory availability.

Q: Is RoHS compliance important for this substitution?

A: Yes. The original MIC706M-TR is RoHS non-compliant. All recommended substitutes are ROHS3 compliant, meeting current regulatory requirements for new designs and manufacturing. This compliance improvement is a secondary benefit of substitution.

Q: Can I use push-pull output supervisors to replace open-drain designs?

A: Yes, in most applications. Push-pull/totem-pole output stages are functionally compatible with open-drain designs in standard reset circuits. However, verify that the receiving circuit (typically a microcontroller reset input) can accept push-pull output without modification. Most modern microcontroller reset inputs are compatible with both output types.

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