MIC809RYC3 Equivalent & Substitute Parts

Part Overview

The MIC809RYC3 is a single-channel power supply supervisor IC manufactured by Microchip Technology, designed for power-on reset and supervisory functions in embedded systems. This device features push-pull totem pole output configuration with active-low reset control and operates across industrial temperature ranges. The MIC809RYC3 is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. Substitute parts maintain functional equivalence through matching electrical specifications and compatible packaging options.

Substiute Parts

MIC809RYC3

Microchip TechnologyIn Stock: 6964MIC809RYC3 Datasheet

Current PartRFQ

TCM809RENB713

Microchip TechnologyIn Stock: 158821TCM809RENB713 Datasheet

MFR RecommendedRFQ

TCM809RVLB713

Microchip TechnologyIn Stock: 10088TCM809RVLB713 Datasheet

MFR RecommendedRFQ

TCM809RVNB713

Microchip TechnologyIn Stock: 3097TCM809RVNB713 Datasheet

MFR RecommendedRFQ

MAX6326XR26+T

Analog Devices Inc./Maxim IntegratedIn Stock: 3414MAX6326XR26+T Datasheet

MFR RecommendedRFQ

MAX6381XR26D3+T

Analog Devices Inc./Maxim IntegratedIn Stock: 3608MAX6381XR26D3+T Datasheet

MFR RecommendedRFQ

MAX809REXR+T

Analog Devices Inc./Maxim IntegratedIn Stock: 15426MAX809REXR+T Datasheet

MFR RecommendedRFQ

MAX809REXR+T10

Analog Devices Inc./Maxim IntegratedIn Stock: 1161MAX809REXR+T10 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the MIC809RYC3 are qualified based on the following critical parameters that determine functional equivalence:

Electrical Equivalence Criteria:

• Voltage threshold: 2.63V (exact match required)
• Output configuration: Push-pull, totem pole (exact match required)
• Reset polarity: Active low (exact match required)
• Number of channels monitored: 1 channel (exact match required)
• Reset timeout: 140ms minimum or greater (equal or extended acceptable)
• Operating temperature range: -40°C minimum and 85°C maximum or greater (equal or extended acceptable)

Mechanical Equivalence Criteria:

• Package type: SC-70 (SOT-323) or SOT-23-3 (both surface mount, pin-compatible alternatives)
• Mounting type: Surface mount (exact match required)

Compliance Criteria:

• RoHS3 compliance (required for environmental standards)
• MSL rating: 1 (Unlimited) or equivalent moisture handling
• REACH compliance status maintained

Substitute parts are grouped by package configuration: SC-70 variants maintain identical footprint compatibility, while SOT-23-3 variants provide alternative packaging with equivalent electrical performance.

Parameter Comparison

Engineering Selection Recommendations

SC-70 Package Direct Replacements (Identical Footprint):

For designs currently using MIC809RYC3 in SC-70 packaging, the following active parts provide direct substitution with maintained electrical specifications:

• TCM809RVLB713 (Microchip): Extends operating temperature to -40°C ~ 125°C, maintains 140ms reset timeout, available in tape and reel packaging
• MAX6381XR26D3+T (Analog Devices/Maxim): Extends operating temperature to -40°C ~ 125°C, maintains 140ms reset timeout, available in cut tape packaging
• MAX809REXR+T (Analog Devices/Maxim): Extends operating temperature to -40°C ~ 125°C, maintains 140ms reset timeout, highest inventory availability (15,400 pcs)
• MAX809REXR+T10 (Analog Devices/Maxim): Extends operating temperature to -40°C ~ 125°C, maintains 140ms reset timeout, available in limited quantity (1,099 pcs)
• MAX6326XR26+T (Analog Devices/Maxim): Maintains -40°C ~ 85°C temperature range, reduces reset timeout to 100ms minimum, suitable for applications with faster reset requirements

SOT-23-3 Package Alternatives (Different Footprint):

For new designs or applications where package footprint flexibility exists:

• TCM809RENB713 (Microchip): SOT-23-3 package, maintains -40°C ~ 85°C temperature range, 140ms reset timeout, highest inventory availability in SOT-23-3 format (158,754 pcs)
• TCM809RVNB713 (Microchip): SOT-23-3 package, extends operating temperature to -40°C ~ 125°C, 140ms reset timeout, available in tape and reel packaging

Selection Criteria:

Choose substitutes based on: (1) package compatibility with existing PCB layout, (2) operating temperature requirements of the target application, (3) reset timeout specifications, (4) inventory availability and lead time requirements, (5) compliance certifications matching system requirements.

Frequently Asked Questions (FAQ)

Q: Can TCM809RENB713 replace MIC809RYC3 directly on the PCB?

A: TCM809RENB713 uses SOT-23-3 packaging while MIC809RYC3 uses SC-70 packaging. These packages have different footprints and pin layouts. Direct PCB replacement is not possible without layout modification. For identical footprint compatibility, use TCM809RVLB713, MAX6381XR26D3+T, MAX809REXR+T, or MAX809REXR+T10, which all use SC-70 packaging.

Q: What is the difference between MAX6326XR26+T and MAX6381XR26D3+T?

A: Both parts share identical electrical specifications (2.63V threshold, push-pull output, active-low reset) and SC-70 packaging. The primary difference is reset timeout: MAX6326XR26+T specifies 100ms minimum, while MAX6381XR26D3+T specifies 140ms minimum. Select MAX6381XR26D3+T if your application requires the 140ms reset timeout matching the original MIC809RYC3 specification.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts carry ROHS3 compliance certification and REACH unaffected status, matching the environmental compliance profile of the original MIC809RYC3.

Q: Which substitute part has the best availability?

A: MAX809REXR+T offers the highest inventory level at 15,400 pieces in stock. For SOT-23-3 packaging, TCM809RENB713 provides maximum availability at 158,754 pieces.

Q: Can I use a substitute part with extended temperature range (-40°C ~ 125°C) in an application rated for -40°C ~ 85°C?

A: Yes. Extended temperature range parts are backward compatible with applications requiring narrower temperature ranges. The part will operate correctly within the -40°C ~ 85°C window. This substitution introduces no functional risk for the specified operating conditions.

Q: What is the significance of the reset timeout parameter?

A: Reset timeout defines the minimum duration the reset output remains asserted after power supply stabilization. MIC809RYC3 specifies 140ms minimum. Substitute parts with equal or longer reset timeout (140ms or greater) maintain identical reset behavior. MAX6326XR26+T with 100ms timeout provides faster reset assertion, suitable only if the application can tolerate shorter reset pulse duration.