DS1631S/T&R Temperature Sensor - Equivalent & Substitute Parts

Part Overview

The DS1631S/T&R is a digital temperature sensor manufactured by Analog Devices Inc./Maxim Integrated, designed for local temperature measurement applications across the -55°C to 125°C range. This component operates via I2C interface with 11-bit resolution and is housed in an 8-SOIC surface mount package. The main part number DS1631S/T&R is classified as obsolete, making identification of active equivalent parts essential for ongoing design support and procurement.

Substiute Parts

DS1631S/T&R

Analog Devices Inc./Maxim IntegratedIn Stock: 980DS1631S/T&R Datasheet

Current PartRFQ

DS1631S+T&R

Analog Devices Inc./Maxim IntegratedIn Stock: 5155DS1631S+T&R Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the DS1631S/T&R is determined by strict equivalence across the following critical parameters:

• Sensor type and measurement capability (Digital, Local)
• Temperature sensing range (-55°C ~ 125°C)
• Communication protocol (I2C)
• Supply voltage range (2.7V ~ 5.5V)
• Resolution (11 bits)
• Accuracy specifications (±0.5°C / ±2°C)
• Physical package (8-SOIC)
• Functional features (One-Shot, Output Switch, Programmable Limit, Programmable Resolution, Standby Mode)

The DS1631S+T&R meets all these criteria and serves as a direct functional equivalent. The primary distinction between the main part and its substitute is product status and packaging format.

Parameter Comparison

Engineering Selection Recommendations

The DS1631S+T&R is the appropriate selection for new designs and ongoing procurement. This part maintains complete electrical and mechanical compatibility with the obsolete DS1631S/T&R while offering the following advantages:

• Active product status ensures long-term availability and manufacturing support
• ROHS3 compliance satisfies current regulatory requirements, whereas the main part is RoHS non-compliant
• Identical electrical specifications and package geometry enable direct substitution without circuit redesign
• Higher inventory availability (5100 units in stock versus 960 units) supports production schedules

Frequently Asked Questions (FAQ)

Q: Can DS1631S+T&R replace DS1631S/T&R in existing designs?

A: Yes. Both parts are identical in electrical performance, I2C protocol implementation, temperature measurement range, resolution, accuracy, and 8-SOIC package dimensions. No circuit modifications are required.

Q: What is the difference between DS1631S/T&R and DS1631S+T&R?

A: The primary differences are product status (obsolete versus active) and RoHS compliance (non-compliant versus ROHS3 compliant). Electrical and mechanical specifications are equivalent.

Q: Are there any compatibility concerns with the packaging format?

A: No. Both parts use identical Tape & Reel (TR) packaging and 8-SOIC surface mount configuration. PCB assembly processes and handling requirements remain unchanged.

Q: What supply voltage range does this sensor support?

A: The sensor operates across 2.7V to 5.5V, accommodating both 3.3V and 5V logic systems.

Q: What is the I2C communication protocol used?

A: The DS1631S+T&R communicates via I2C interface with programmable resolution and one-shot measurement capability, supporting both standard and fast I2C modes within the specified voltage range.