DS1722S/T&R Equivalent & Substitute Parts

Part Overview

The DS1722S/T&R is a digital temperature sensor manufactured by Analog Devices Inc./Maxim Integrated, designed for local temperature measurement across a -55°C to 120°C range with 11-bit resolution and SPI output. The device operates on supply voltages between 1.8V and 5.5V, with dual voltage specifications of 2.65V to 5.5V available. This part is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and new design implementations.

Substiute Parts

DS1722S/T&R

Analog Devices Inc./Maxim IntegratedIn Stock: 781DS1722S/T&R Datasheet

Current PartRFQ

DS1722S+T&R

Analog Devices Inc./Maxim IntegratedIn Stock: 3222DS1722S+T&R Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the DS1722S/T&R is determined by strict alignment across the following critical parameters:

• Sensor type classification (Digital, Local)
• Temperature sensing range (-55°C ~ 120°C minimum)
• Output protocol (SPI)
• Resolution (11-bit)
• Supply voltage compatibility (1.8V ~ 5.5V or 2.65V ~ 5.5V)
• Thermal accuracy specification (±2°C or ±3°C)
• Package form factor (8-SOIC)
• Surface mount capability

The DS1722S+T&R meets all substitution criteria. The primary distinction between the main part and its substitute is packaging format: the DS1722S/T&R is supplied in Tape & Reel (TR) configuration, while the DS1722S+T&R is supplied in Cut Tape (CT) configuration. Both variants share identical electrical specifications and functional characteristics.

Parameter Comparison

Engineering Selection Recommendations

The DS1722S+T&R serves as a direct functional equivalent to the DS1722S/T&R. Selection between these variants depends on procurement and assembly requirements:

The DS1722S+T&R is the preferred choice for new designs and ongoing production. This part carries Active product status, ensuring continued manufacturer support and availability. The DS1722S+T&R achieves ROHS3 compliance, meeting current environmental and regulatory standards, whereas the DS1722S/T&R is RoHS non-compliant.

For applications requiring Tape & Reel packaging specifically, the DS1722S/T&R remains available with 710 units in stock. However, given its Obsolete classification, long-term availability cannot be assured.

The Cut Tape (CT) packaging of the DS1722S+T&R accommodates both manual and automated assembly processes. With 3166 units in current inventory, this variant provides superior supply chain stability.

Frequently Asked Questions (FAQ)

Q: Can the DS1722S+T&R replace the DS1722S/T&R in existing designs?

A: Yes. Both parts are electrically and functionally identical. The DS1722S+T&R operates across the same temperature range (-55°C ~ 120°C), delivers 11-bit resolution via SPI output, and maintains ±2°C accuracy. Pin configuration and package dimensions (8-SOIC, 0.154" width) are identical. The only difference is packaging format: Tape & Reel versus Cut Tape.

Q: What is the difference between Tape & Reel and Cut Tape packaging?

A: Tape & Reel (TR) packaging supplies components on continuous carrier tape wound on reels, optimized for high-volume automated assembly. Cut Tape (CT) packaging provides components on tape segments cut to specific lengths, suitable for lower-volume production, manual assembly, or mixed-component orders. Both formats contain identical components with no electrical or functional differences.

Q: Why is the DS1722S/T&R classified as Obsolete?

A: Obsolete status indicates the manufacturer has discontinued active production and support. The DS1722S+T&R, classified as Active, represents the current production equivalent and is the recommended choice for new applications.

Q: Does the DS1722S+T&R meet current compliance requirements?

A: Yes. The DS1722S+T&R is ROHS3 compliant and REACH unaffected, meeting current environmental regulations. The DS1722S/T&R is RoHS non-compliant and may not satisfy procurement requirements for regulated applications.

Q: Are there any differences in supply voltage specifications between these parts?

A: No. Both the DS1722S/T&R and DS1722S+T&R support dual supply voltage ranges: 1.8V ~ 5.5V and 2.65V ~ 5.5V. Circuit design and power supply requirements remain unchanged between variants.

Q: What features do both parts provide?

A: Both variants include One-Shot measurement mode, Programmable Resolution capability, and Shutdown Mode for power management. These functional features are identical across both part numbers.