DS1672U-2 Equivalent & Substitute Parts

Part Overview

The DS1672U-2 is a Real Time Clock (RTC) IC Binary Counter with I2C 2-Wire Serial interface, manufactured by Analog Devices Inc./Maxim Integrated. This component is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and new design implementations. The part operates across a wide temperature range (-40°C to 85°C) with dual power supply capability, supporting both primary and battery-backed operation modes.

Substiute Parts

DS1672U-2

Analog Devices Inc./Maxim IntegratedIn Stock: 674DS1672U-2 Datasheet

Current PartRFQ

DS1672U-2+

Analog Devices Inc./Maxim IntegratedIn Stock: 967DS1672U-2+ Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the DS1672U-2 is determined by strict alignment across the following critical parameters:

Interface Protocol: I2C 2-Wire Serial communication must be maintained for firmware and hardware compatibility.

Time and Date Format: Binary format representation is required for register-level compatibility.

Voltage Specifications: Supply voltage range (1.8V ~ 2.2V) and battery backup voltage range (1.3V ~ 3.63V) must be identical.

Current Consumption: Timekeeping current specification of 500µA @ 2.2V establishes power budget constraints.

Operating Temperature Range: -40°C to 85°C operational window must be supported.

Package Configuration: 8-TSSOP/8-MSOP form factor with 0.118" (3.00mm) width ensures PCB layout compatibility.

Features: Trickle-Charger functionality must be present.

The DS1672U-2+ meets all substitution criteria and is classified as a direct equivalent within the same product family.

Parameter Comparison

Engineering Selection Recommendations

The DS1672U-2+ is a direct functional equivalent to the DS1672U-2. Both parts share identical electrical specifications, interface protocols, and package configurations. The primary distinction is regulatory compliance: the DS1672U-2+ achieves ROHS3 compliance, whereas the original DS1672U-2 is RoHS non-compliant. For new designs or systems requiring regulatory adherence to RoHS3 standards, the DS1672U-2+ is the appropriate selection. Both parts maintain MSL Level 1 (Unlimited) moisture sensitivity classification and identical ECCN and HTSUS codes.

Frequently Asked Questions (FAQ)

Q: Can DS1672U-2+ be used as a direct replacement for DS1672U-2 in existing designs?

A: Yes. The DS1672U-2+ is electrically and mechanically identical to the DS1672U-2. No circuit modifications or firmware changes are required. Pin configuration, voltage specifications, current consumption, and I2C protocol implementation are identical across both parts.

Q: What is the significance of the RoHS3 compliance difference?

A: The DS1672U-2+ meets ROHS3 (Restriction of Hazardous Substances Directive 3) compliance requirements, restricting the use of specified hazardous materials. The original DS1672U-2 does not meet this standard. For applications subject to EU environmental regulations or customer RoHS requirements, the DS1672U-2+ is mandatory.

Q: Are there any package or pinout differences between these parts?

A: No. Both parts use the 8-TSSOP/8-MSOP package with 0.118" (3.00mm) width. Pinout, PCB footprint, and mounting requirements are identical.

Q: What is the Trickle-Charger feature?

A: The Trickle-Charger is an integrated circuit feature that maintains battery charge during normal operation, extending backup power availability during supply loss conditions.

Q: Are both parts still in production?

A: Both the DS1672U-2 and DS1672U-2+ are classified as obsolete products. Inventory availability should be verified with authorized distributors before procurement decisions.