MIC6315-26D3U TR Equivalent & Substitute Parts

Part Overview

The MIC6315-26D3U TR is a single-channel power management supervisor IC manufactured by Microchip Technology, designed for microprocessor reset and power-on reset applications. This component operates with an open drain or open collector output configuration and monitors a single voltage threshold at 2.63V. The part is classified as obsolete, making equivalent and substitute parts necessary for new designs and ongoing production requirements. Substitute parts must maintain functional equivalence across voltage monitoring, reset timing, output configuration, and thermal operating range specifications.

Key Parameters

Parameter	MIC6315-26D3U 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	Open Drain or Open Collector
Reset Logic	Active Low
Reset Timeout	140ms Minimum
Operating Temperature Range	-40°C ~ 85°C (TA)
Mounting Type	Surface Mount
Package / Case	TO-253-4, TO-253AA
Supplier Device Package	SOT-143
RoHS Status	RoHS non-compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution eligibility for the MIC6315-26D3U TR is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

Single voltage monitoring channel
Voltage threshold: 2.63V (±tolerance as specified by manufacturer)
Output configuration: Open Drain or Open Collector
Reset logic: Active Low
Reset timeout: 140ms minimum (exact match required)
Package / Case: TO-253-4, TO-253AA
Supplier Device Package: SOT-143 or SOT-143-4
Mounting type: Surface Mount

Acceptable Variation Parameters:

Operating temperature range may extend beyond -40°C ~ 85°C (higher upper limit acceptable)
Manufacturer may differ (Analog Devices, STMicroelectronics, Maxim Integrated acceptable)
Product status may be Active (preferred over Obsolete)
RoHS compliance status may differ (RoHS3 Compliant preferred)
Packaging format may differ (Tape & Reel, Cut Tape acceptable)

Substitute parts are grouped by reset timeout specification, as this parameter directly affects system reset behavior and timing-critical applications.

Parameter Comparison

Part Number	Manufacturer	Voltage Threshold	Reset Timeout	Operating Temp Range	Output Config	Reset Logic	Package	Product Status	RoHS Status
MIC6315-26D3U TR	Microchip Technology	2.63V	140ms Min	-40°C ~ 85°C	Open Drain/Collector	Active Low	SOT-143	Obsolete	RoHS non-compliant
MIC6315-26D3UY-TR	Microchip Technology	2.63V	140ms Min	-40°C ~ 85°C	Open Drain/Collector	Active Low	SOT-143	Active	ROHS3 Compliant
ADM6315-26D3ARTZR7	Analog Devices Inc.	2.63V	140ms Min	-40°C ~ 125°C	Open Drain/Collector	Active Low	SOT-143-4	Active	ROHS3 Compliant
ADM6315-26D1ARTZR7	Analog Devices Inc.	2.63V	1ms Min	-40°C ~ 125°C	Open Drain/Collector	Active Low	SOT-143-4	Active	ROHS3 Compliant
ADM6315-26D2ARTZR7	Analog Devices Inc.	2.63V	20ms Min	-40°C ~ 125°C	Open Drain/Collector	Active Low	SOT-143-4	Active	ROHS3 Compliant
ADM6315-26D4ARTZR7	Analog Devices Inc.	2.63V	1.12s Min	-40°C ~ 125°C	Open Drain/Collector	Active Low	SOT-143-4	Active	ROHS3 Compliant
MAX6467US26D3+T	Analog Devices Inc./Maxim Integrated	2.625V	150ms Min	-40°C ~ 125°C	Open Drain/Collector	Active Low	SOT-143-4	Active	ROHS3 Compliant
MAX6805US26D3+T	Analog Devices Inc./Maxim Integrated	2.63V	100ms Min	-40°C ~ 125°C	Open Drain/Collector	Active Low	SOT-143-4	Active	ROHS3 Compliant
STM6315RBW13F	STMicroelectronics	2.63V	20ms Min	-40°C ~ 125°C	Open Drain/Collector	Active Low	SOT-143-4	Active	ROHS3 Compliant
STM6315RDW13F	STMicroelectronics	2.63V	112ms Min	-40°C ~ 125°C	Open Drain/Collector	Active Low	SOT-143-4	Active	ROHS3 Compliant
STM6315RGW13F	STMicroelectronics	2.63V	1.12s Min	-40°C ~ 125°C	Open Drain/Collector	Active Low	SOT-143-4	Active	ROHS3 Compliant

Engineering Selection Recommendations

Direct Equivalent (Exact Reset Timeout Match):

MIC6315-26D3UY-TR is the direct equivalent to MIC6315-26D3U TR. Both parts maintain identical electrical specifications including 140ms minimum reset timeout, 2.63V voltage threshold, and SOT-143 package configuration. The primary difference is product status (Active vs. Obsolete) and RoHS compliance (ROHS3 Compliant vs. non-compliant). This part is recommended as the primary replacement for new designs and production continuity.

ADM6315-26D3ARTZR7 provides functional equivalence with identical reset timeout (140ms minimum) and voltage threshold (2.63V). This Analog Devices part extends the operating temperature range to -40°C ~ 125°C and carries ROHS3 compliance. The SOT-143-4 package is mechanically and electrically compatible with the original SOT-143 specification. This part is suitable for applications requiring extended thermal performance.

MAX6467US26D3+T offers near-equivalent performance with 150ms minimum reset timeout (10ms longer than original specification) and 2.625V threshold (within typical tolerance of 2.63V). Extended operating temperature range (-40°C ~ 125°C) and ROHS3 compliance are provided. This part is acceptable where the slightly extended reset timeout does not impact system timing requirements.

Alternative Selections (Different Reset Timeout):

Parts with differing reset timeout specifications are available from Analog Devices and STMicroelectronics. Selection of these alternatives requires verification that the modified reset timing aligns with system requirements. ADM6315-26D1ARTZR7 (1ms minimum), ADM6315-26D2ARTZR7 (20ms minimum), and ADM6315-26D4ARTZR7 (1.12s minimum) provide options for applications with different timing constraints. STM6315RBW13F (20ms minimum), STM6315RDW13F (112ms minimum), and STM6315RGW13F (1.12s minimum) offer STMicroelectronics alternatives across the reset timeout spectrum.

MAX6805US26D3+T provides 100ms minimum reset timeout with 2.63V threshold, representing a shorter reset window than the original specification.

All substitute parts listed maintain single-channel voltage monitoring, open drain/open collector output configuration, active low reset logic, surface mount technology, and TO-253-4/TO-253AA package compatibility.

Frequently Asked Questions (FAQ)

Q: Can MIC6315-26D3UY-TR be used as a direct replacement for MIC6315-26D3U TR?

A: Yes. MIC6315-26D3UY-TR is the direct equivalent with identical electrical specifications. The primary differences are product status (Active vs. Obsolete) and RoHS compliance (ROHS3 Compliant). Both parts share the same 140ms minimum reset timeout, 2.63V voltage threshold, and SOT-143 package configuration.

Q: What is the significance of reset timeout differences among substitute parts?

A: Reset timeout determines the duration the supervisor IC holds the reset signal active after voltage threshold detection. The original MIC6315-26D3U TR specifies 140ms minimum. Substitute parts with different timeouts (1ms, 20ms, 112ms, 1.12s) are functionally different and must be selected based on specific system reset timing requirements. Shorter timeouts provide faster system recovery; longer timeouts extend the reset assertion period.

Q: Are SOT-143 and SOT-143-4 packages interchangeable?

A: SOT-143 and SOT-143-4 refer to the same physical package with four leads in a TO-253-4 or TO-253AA configuration. These designations are manufacturer-specific nomenclature for identical package geometry and pin assignments. Parts specified as either SOT-143 or SOT-143-4 are mechanically and electrically compatible.

Q: Does operating temperature range affect substitution eligibility?

A: Operating temperature range is an acceptable variation parameter. The original part specifies -40°C ~ 85°C. Substitute parts with extended ranges (-40°C ~ 125°C) are acceptable and provide enhanced thermal performance. Parts with narrower temperature ranges would not be suitable substitutes.

Q: What is the impact of voltage threshold variation between 2.63V and 2.625V?

A: The 0.005V difference between 2.63V and 2.625V falls within typical manufacturing tolerance for voltage threshold specifications in supervisor ICs. MAX6467US26D3+T with 2.625V threshold is functionally equivalent for applications where the original 2.63V threshold is specified, as both values operate within the same system voltage monitoring band.

Q: Are RoHS compliance differences significant for part selection?

A: RoHS compliance status reflects manufacturing process and material composition. The original MIC6315-26D3U TR is RoHS non-compliant, while all listed substitute parts are ROHS3 Compliant. For new designs and applications subject to RoHS regulations, ROHS3 Compliant parts are required. For legacy systems or applications without RoHS requirements, either status is acceptable.

Q: Can parts with different manufacturers be used interchangeably?

A: Yes, provided all electrical and mechanical parameters match or exceed the original specification. Analog Devices (ADM6315 series), STMicroelectronics (STM6315 series), and Maxim Integrated (MAX6467, MAX6805 series) parts are functionally equivalent when voltage threshold, reset timeout, output configuration, and package specifications align with system requirements.

Q: What packaging format differences exist among substitute parts?

A: Substitute parts are available in Tape & Reel (TR) and Cut Tape (CT) & Digi-Reel® formats. These represent different supply and handling methods for the same component. Tape & Reel format is standard for high-volume production; Cut Tape & Digi-Reel® format accommodates lower-volume or mixed-component requirements. Electrical and mechanical specifications remain identical regardless of packaging format.

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