MIC6315-29D4U TR Equivalent & Substitute Parts

Part Overview

The MIC6315-29D4U TR is a single-channel power management supervisor IC manufactured by Microchip Technology, designed for reset and power-on reset applications in embedded systems. This component operates as an open drain or open collector supervisor with a 2.93V threshold voltage and 1.1s minimum reset timeout. The part is currently classified as obsolete, making equivalent and substitute parts necessary for ongoing system support and new designs requiring similar functionality.

Substiute Parts

MIC6315-29D4U TR

Microchip TechnologyIn Stock: 1082MIC6315-29D4U TR Datasheet

Current PartRFQ

MIC6315-29D4UY-TR

Microchip TechnologyIn Stock: 3879MIC6315-29D4UY-TR Datasheet

DirectRFQ

ADM6315-29D2ARTZR7

Analog Devices Inc.In Stock: 19982ADM6315-29D2ARTZR7 Datasheet

MFR RecommendedRFQ

ADM6315-29D3ARTZR7

Analog Devices Inc.In Stock: 5847ADM6315-29D3ARTZR7 Datasheet

MFR RecommendedRFQ

MAX6444US29L+T

Analog Devices Inc./Maxim IntegratedIn Stock: 5381MAX6444US29L+T Datasheet

MFR RecommendedRFQ

MAX6467US29D3+T

Analog Devices Inc./Maxim IntegratedIn Stock: 2215MAX6467US29D3+T Datasheet

MFR RecommendedRFQ

MAX6805US29D3+T

Analog Devices Inc./Maxim IntegratedIn Stock: 5200MAX6805US29D3+T Datasheet

MFR RecommendedRFQ

STM6315SDW13F

STMicroelectronicsIn Stock: 32260STM6315SDW13F Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the MIC6315-29D4U TR is determined by strict alignment of the following critical parameters:

• Voltage Threshold: 2.93V (±tolerance acceptable)
• Output Type: Open Drain or Open Collector
• Reset Logic: Active Low
• Number of Channels: 1 Channel
• Package: TO-253-4 / TO-253AA / SOT-143 compatible
• Mounting Type: Surface Mount
• Operating Temperature Range: Minimum -40°C to 85°C

All substitute parts listed maintain these core electrical and mechanical specifications. Variations in reset timeout (ranging from 20ms to 150ms minimum) and operating temperature upper limits (85°C to 125°C) are acceptable within the substitution group, as these parameters do not affect the primary reset supervision function in standard applications.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: MIC6315-29D4UY-TR (Microchip Technology)

This part is the direct equivalent to the obsolete MIC6315-29D4U TR, maintaining identical electrical specifications and operating temperature range. It is currently in active production status with ROHS3 compliance, making it the preferred choice for direct replacement in existing designs. Inventory availability is substantial at 3,859 pieces.

Alternative Recommendations for Extended Temperature Range: ADM6315-29D2ARTZR7, ADM6315-29D3ARTZR7, MAX6467US29D3+T, MAX6805US29D3+T, STM6315SDW13F

These alternatives provide extended operating temperature ranges (-40°C to 125°C) and are all ROHS3 compliant with active product status. Selection among these alternatives depends on reset timeout requirements specific to the application. The ADM6315-29D2ARTZR7 offers the shortest reset timeout at 20ms minimum, while ADM6315-29D3ARTZR7 and MAX6467US29D3+T provide 140ms and 150ms minimum timeouts respectively. STM6315SDW13F offers the highest inventory availability at 32,200 pieces with 112ms minimum reset timeout.

Compatibility Note: All substitute parts maintain the same package footprint (TO-253-4 / SOT-143), single-channel architecture, 2.93V threshold voltage, active-low reset logic, and open drain/collector output configuration. Direct PCB-level substitution is possible without circuit redesign.

Frequently Asked Questions (FAQ)

Q: Can I use ADM6315-29D2ARTZR7 as a direct replacement for MIC6315-29D4U TR?

A: Yes. Both parts share identical voltage threshold (2.93V), output type (open drain/collector), reset logic (active low), and package configuration (TO-253-4 / SOT-143). The ADM6315-29D2ARTZR7 offers extended temperature range (-40°C to 125°C) and ROHS3 compliance. The primary difference is reset timeout: ADM6315-29D2ARTZR7 specifies 20ms minimum versus 1.1s for the original part. Verify your application does not depend on the longer timeout specification.

Q: What is the difference between the reset timeout values across substitute parts?

A: Reset timeout defines the minimum duration the reset output remains asserted after power supply stabilization. The MIC6315-29D4U TR specifies 1.1s minimum, while substitutes range from 20ms to 150ms minimum. Longer timeouts provide additional margin for system initialization. Select a substitute with reset timeout equal to or greater than your application requirement.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts carry ROHS3 compliance certification. The original MIC6315-29D4U TR is RoHS non-compliant. If RoHS compliance is required for your application, any substitute part listed is acceptable.

Q: Do substitute parts require PCB layout changes?

A: No. All substitute parts use identical package types (TO-253-4 / SOT-143-4) with the same pinout and footprint. Direct PCB substitution is possible without layout modifications.

Q: Which substitute offers the best inventory availability?

A: STM6315SDW13F from STMicroelectronics offers the highest inventory at 32,200 pieces. This part maintains all critical electrical specifications and provides 112ms minimum reset timeout with extended temperature range (-40°C to 125°C).

Q: Can I use MAX6444US29L+T if my application operates at temperatures above 85°C?

A: No. MAX6444US29L+T is rated for -40°C to 85°C operating temperature. For applications requiring operation above 85°C, select from ADM6315-29D2ARTZR7, ADM6315-29D3ARTZR7, MAX6467US29D3+T, MAX6805US29D3+T, or STM6315SDW13F, all rated to 125°C.