DS1672-2 Real Time Clock IC Equivalent & Substitute Parts

Part Overview

The DS1672-2 is a Real Time Clock (RTC) IC with binary counter functionality, designed for 2-wire serial (I2C) communication in embedded timing applications. This component features a trickle-charger for battery backup and operates across industrial temperature ranges. The DS1672-2 is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support, design updates, and inventory management.

Substiute Parts

DS1672-2

Analog Devices Inc./Maxim IntegratedIn Stock: 1390DS1672-2 Datasheet

Current PartRFQ

DS1672-2+

Analog Devices Inc./Maxim IntegratedIn Stock: 1141DS1672-2+ Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the DS1672-2 is determined by strict alignment across the following critical parameters:

• Interface Protocol: I2C, 2-Wire Serial communication
• Functional Type: Binary Counter RTC
• Time/Date Format: Binary representation
• Package Compatibility: 8-DIP (0.300", 7.62mm) through-hole mounting
• Electrical Specifications: Supply voltage range (1.8V ~ 2.2V), battery voltage range (1.3V ~ 3.63V), timekeeping current (500µA @ 2.2V)
• Operating Temperature Range: -40°C ~ 85°C
• Features: Trickle-Charger functionality

The DS1672-2+ qualifies as a direct substitute based on complete parameter alignment across all electrical, mechanical, and functional criteria. The primary distinction is packaging format and RoHS compliance status.

Parameter Comparison

Engineering Selection Recommendations

DS1672-2+ as Direct Substitute:

The DS1672-2+ is a functionally equivalent substitute for the DS1672-2. Both parts share identical electrical specifications, interface protocols, package geometry, and feature sets. The DS1672-2+ is available in bulk packaging format and carries ROHS3 compliance certification, whereas the DS1672-2 is RoHS non-compliant.

For new designs or systems requiring RoHS compliance, the DS1672-2+ is the appropriate selection. For legacy system maintenance where RoHS compliance is not a requirement, either part is electrically and mechanically interchangeable.

Both parts are classified as obsolete products. Inventory availability should be verified prior to procurement for production applications.

Frequently Asked Questions (FAQ)

Q: Can DS1672-2+ replace DS1672-2 in existing designs?

A: Yes. The DS1672-2+ is electrically and mechanically identical to the DS1672-2. Both parts operate at identical supply voltages (1.8V ~ 2.2V), battery voltages (1.3V ~ 3.63V), timekeeping current (500µA @ 2.2V), and temperature ranges (-40°C ~ 85°C). The 8-DIP package footprint is identical, enabling direct PCB substitution without layout modifications.

Q: What is the difference between DS1672-2 and DS1672-2+?

A: The primary differences are packaging format and RoHS compliance status. The DS1672-2 is supplied in standard packaging and is RoHS non-compliant. The DS1672-2+ is supplied in bulk packaging and carries ROHS3 compliance certification. All electrical and functional parameters are identical.

Q: Are both parts still in production?

A: No. Both the DS1672-2 and DS1672-2+ are classified as obsolete products. Availability is limited to existing inventory. Procurement timelines should account for potential supply constraints.

Q: Does the bulk packaging of DS1672-2+ affect compatibility?

A: No. Packaging format refers to the quantity and presentation method for procurement and storage. The actual component specifications, pinout, and electrical characteristics remain unchanged. Bulk packaging does not affect circuit-level performance or compatibility.

Q: What are the critical parameters for substitution?

A: Substitution eligibility is determined by: I2C interface compatibility, binary counter functionality, binary time/date format, 8-DIP package geometry, supply voltage range (1.8V ~ 2.2V), battery voltage range (1.3V ~ 3.63V), timekeeping current specification (500µA @ 2.2V), operating temperature range (-40°C ~ 85°C), and trickle-charger feature presence. All parameters must align for direct substitution.