TC77-5.0MOATR Equivalent & Substitute Parts

Part Overview

The TC77-5.0MOATR is a digital temperature sensor manufactured by Microchip Technology, designed for local temperature measurement across the -55°C to 125°C range with 12-bit resolution and SPI output. The device is supplied in 8-SOIC surface mount packaging with Tape & Reel (TR) configuration and maintains Active product status with ROHS3 compliance.

Substitute parts are necessary when Tape & Reel packaging is unavailable or when alternative supply sources are required. Equivalent devices must maintain identical electrical specifications, package geometry, and communication protocol to ensure direct functional replacement without circuit redesign.

Substiute Parts

TC77-5.0MOATR

Microchip TechnologyIn Stock: 1234TC77-5.0MOATR Datasheet

Current PartRFQ

TC77-5.0MOA

Microchip TechnologyIn Stock: 1312TC77-5.0MOA Datasheet

DirectRFQ

LM74CIM-3/NOPB

Texas InstrumentsIn Stock: 1479LM74CIM-3/NOPB Datasheet

MFR RecommendedRFQ

LM74CIM-5/NOPB

Texas InstrumentsIn Stock: 1679LM74CIM-5/NOPB Datasheet

MFR RecommendedRFQ

LM74CIMX-3/NOPB

Texas InstrumentsIn Stock: 1669LM74CIMX-3/NOPB Datasheet

MFR RecommendedRFQ

LM74CIMX-5/NOPB

Texas InstrumentsIn Stock: 1736LM74CIMX-5/NOPB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution logic for the TC77-5.0MOATR is determined by the following critical parameters:

Mandatory Compatibility Parameters:

• Package / Case: 8-SOIC (0.154", 3.90mm Width)
• Mounting Type: Surface Mount
• Output Type: SPI
• Resolution: 12 bits
• Supply Voltage Range: Must accommodate 2.7V ~ 5.5V operation

Acceptable Variation Parameters:

• Sensing Temperature Range: Substitute may exceed the -55°C ~ 125°C range
• Accuracy: Substitute may have different accuracy specifications
• Packaging Format: Tube, Cut Tape (CT) & Digi-Reel®, or Tape & Reel (TR) are interchangeable
• Product Status: Active or Obsolete parts are functionally equivalent
• Moisture Sensitivity Level: May differ without affecting electrical function

Substitute parts are grouped into two categories: direct Microchip Technology equivalents and cross-manufacturer alternatives from Texas Instruments with extended temperature capability.

Parameter Comparison

Engineering Selection Recommendations

Microchip Technology TC77 Series (Preferred for Continuity)

TC77-5.0MOA is the direct equivalent to TC77-5.0MOATR, differing only in packaging format (Tube versus Tape & Reel). Both devices maintain identical electrical specifications and Active product status. Selection of TC77-5.0MOA is appropriate when Tape & Reel packaging is unavailable and Tube packaging is acceptable for assembly processes.

Texas Instruments LM74 Series (Extended Temperature Range)

LM74CIM-5/NOPB and LM74CIMX-5/NOPB provide extended sensing temperature range to -55°C ~ 150°C, exceeding the TC77-5.0MOATR specification of -55°C ~ 125°C. These devices are functionally compatible within the TC77-5.0MOATR operating range but feature reduced accuracy specifications (1.25°C nominal, ±5°C maximum versus ±1°C nominal, ±3°C maximum). LM74CIMX-5/NOPB maintains Active product status, while LM74CIM-5/NOPB is Obsolete.

LM74CIM-3/NOPB and LM74CIMX-3/NOPB are equivalent to the 5V variants with identical temperature and accuracy characteristics. LM74CIMX-3/NOPB is Active; LM74CIM-3/NOPB is Obsolete.

All LM74 variants operate at 3V ~ 5.5V supply voltage, which is compatible with the TC77-5.0MOATR 2.7V ~ 5.5V specification for applications using 3V or higher supply rails.

Frequently Asked Questions (FAQ)

Q: Can TC77-5.0MOA be used as a direct replacement for TC77-5.0MOATR?

A: Yes. Both devices are identical in electrical specifications, resolution, accuracy, and package geometry. The only difference is packaging format: TC77-5.0MOA is supplied in Tube format while TC77-5.0MOATR is supplied in Tape & Reel format. Substitution is valid when assembly equipment can accommodate Tube packaging.

Q: Are Texas Instruments LM74 devices compatible with TC77-5.0MOATR circuits?

A: Yes, with design considerations. LM74 devices share identical 8-SOIC package geometry, SPI output protocol, 12-bit resolution, and surface mount characteristics. However, LM74 devices operate at 3V ~ 5.5V supply voltage, requiring circuits to use 3V or higher supply rails. Additionally, LM74 accuracy is reduced to 1.25°C nominal and ±5°C maximum compared to TC77-5.0MOATR specifications of ±1°C nominal and ±3°C maximum. Applications requiring the higher accuracy of the TC77 series should not substitute LM74 devices.

Q: What is the difference between LM74CIM and LM74CIMX packaging variants?

A: LM74CIM is supplied in Tube packaging; LM74CIMX is supplied in Cut Tape (CT) & Digi-Reel® format. Both variants are electrically identical. LM74CIMX maintains Active product status while LM74CIM is Obsolete. For new designs, LM74CIMX variants are preferred.

Q: Can LM74 devices be used in applications requiring -55°C ~ 125°C operation?

A: Yes. LM74 devices are rated to -55°C ~ 150°C, which encompasses the -55°C ~ 125°C range of TC77-5.0MOATR. However, accuracy specifications differ: LM74 devices provide ±5°C accuracy at the -55°C extreme, while TC77-5.0MOATR provides ±3°C accuracy. Applications with tight accuracy requirements at low temperatures should use TC77-5.0MOATR or TC77-5.0MOA.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. TC77-5.0MOA, LM74CIM-5/NOPB, LM74CIMX-5/NOPB, LM74CIM-3/NOPB, and LM74CIMX-3/NOPB are all ROHS3 compliant, matching the compliance status of TC77-5.0MOATR.

Q: Which substitute part should be selected for new designs?

A: For continuity with existing TC77 designs, TC77-5.0MOA is the preferred substitute. For applications where extended temperature range or alternative supply sources are beneficial, LM74CIMX-5/NOPB or LM74CIMX-3/NOPB are recommended due to Active product status and availability in Cut Tape & Digi-Reel® format.