TMP100MDBVREP Equivalent & Substitute Parts

Part Overview

The TMP100MDBVREP is an active digital temperature sensor manufactured by Texas Instruments, designed for local temperature measurement across the -55°C to 125°C range. This component operates via I2C/SMBus interface with 11-bit resolution and is housed in a SOT-23-6 surface mount package. The sensor is ROHS3 compliant and currently in active production status. Substitute parts are identified when equivalent functional performance can be achieved through alternative manufacturers while maintaining critical electrical and mechanical compatibility within the specified parameter ranges.

Substiute Parts

TMP100MDBVREP

Texas InstrumentsIn Stock: 2079TMP100MDBVREP Datasheet

Current PartRFQ

MCP9844T-BE/MNY

Microchip TechnologyIn Stock: 6644MCP9844T-BE/MNY Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TMP100MDBVREP is determined by the following critical parameters:

Primary Compatibility Criteria:

• Output interface: I2C/SMBus serial communication
• Sensor type: Digital temperature measurement
• Operating temperature range: Minimum coverage of -40°C to 125°C (overlaps with TMP100 range)
• Supply voltage compatibility: Functional overlap within specified ranges
• Accuracy specification: ±3°C or better at extended temperature ranges
• RoHS3 compliance and active product status

The MCP9844T-BE/MNY qualifies as a substitute based on I2C output compatibility, digital sensor architecture, overlapping operating temperature range (-40°C ~ 125°C), and equivalent accuracy specification (±3°C maximum). Both components utilize 2-wire serial I2C protocol for data transmission and are surface mount devices in active production with current RoHS3 compliance.

Parameter Comparison

Engineering Selection Recommendations

Both the TMP100MDBVREP and MCP9844T-BE/MNY are active production components with ROHS3 compliance and equivalent accuracy specifications. Selection between these parts depends on specific system constraints:

The TMP100MDBVREP provides extended low-temperature operation down to -55°C and higher supply voltage tolerance (2.7V ~ 5.5V), making it suitable for applications requiring broader temperature coverage or higher voltage rails.

The MCP9844T-BE/MNY operates at lower supply voltages (1.7V ~ 3.6V) and includes integrated alarm and fan control outputs, providing additional functionality for thermal management systems. Its operating range of -40°C ~ 125°C covers standard industrial and commercial temperature specifications.

Both components utilize I2C/SMBus protocol and are surface mount devices, ensuring software compatibility and similar board integration requirements. Package differences (SOT-23-6 versus 8-TDFN) require PCB layout modifications.

Frequently Asked Questions (FAQ)

Q: Can MCP9844T-BE/MNY directly replace TMP100MDBVREP without firmware changes?

A: Both components use I2C/SMBus protocol for communication. Register mapping and command structures may differ between manufacturers. Firmware verification is necessary to confirm register compatibility and command sequences before deployment.

Q: What is the impact of the -55°C lower temperature limit on TMP100MDBVREP?

A: The TMP100MDBVREP operates to -55°C, while MCP9844T-BE/MNY operates to -40°C. Applications requiring temperature measurement below -40°C must use the TMP100MDBVREP. Applications limited to -40°C and above can use either component.

Q: How do package differences affect substitution?

A: TMP100MDBVREP uses SOT-23-6 packaging while MCP9844T-BE/MNY uses 8-TDFN (2x3). These packages have different pin counts, footprints, and thermal characteristics. PCB redesign is required for physical substitution.

Q: Are supply voltage ranges compatible between these parts?

A: TMP100MDBVREP operates at 2.7V ~ 5.5V while MCP9844T-BE/MNY operates at 1.7V ~ 3.6V. The overlap range is 2.7V ~ 3.6V. Systems operating outside this overlap require the specific component designed for that voltage range.

Q: What certifications apply to both components?

A: Both components are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99. Both maintain active product status with current manufacturer support.