DS1673E-5 Equivalent & Substitute Parts

Part Overview

The DS1673E-5 is a Real Time Clock (RTC) IC Portable System Controller featuring 3-Wire Serial interface in 20-TSSOP surface mount packaging. This component provides timekeeping functionality with integrated alarm, leap year compensation, and watchdog timer capabilities. The DS1673E-5 is classified as obsolete, making identification of active equivalent parts essential for ongoing system support and new design implementations.

Substiute Parts

DS1673E-5

Analog Devices Inc./Maxim IntegratedIn Stock: 1048DS1673E-5 Datasheet

Current PartRFQ

DS1673E-5+

Analog Devices Inc./Maxim IntegratedIn Stock: 1431DS1673E-5+ Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the DS1673E-5 is determined by strict equivalence across the following parameters:

• Identical base product number (DS1673)
• Matching package type (20-TSSOP with 0.173", 4.40mm Width)
• Identical interface specification (3-Wire Serial)
• Matching supply voltage range (4.5V ~ 5.5V primary, 2.5V ~ 3.7V battery)
• Identical timekeeping current specification (300µA @ 5V maximum)
• Matching operating temperature range (0°C ~ 70°C)
• Identical feature set (Alarm, Leap Year, Watchdog Timer)
• Matching time and date format specifications

The DS1673E-5+ qualifies as a direct substitute based on complete alignment with all electrical and mechanical parameters.

Parameter Comparison

Engineering Selection Recommendations

The DS1673E-5+ is the direct equivalent for the obsolete DS1673E-5. Both components share identical electrical specifications, interface characteristics, and functional capabilities. The primary distinction is product status: the DS1673E-5+ is actively manufactured and available, while the DS1673E-5 is obsolete.

The DS1673E-5+ offers improved regulatory compliance, meeting ROHS3 requirements compared to the non-compliant status of the original part. Both components maintain identical REACH and ECCN classifications. Packaging is supplied in tube format for the DS1673E-5+, supporting standard component handling and assembly processes.

Selection of the DS1673E-5+ is appropriate for replacement applications, new designs, and systems requiring active component availability and modern compliance certifications.

Frequently Asked Questions (FAQ)

Q: Can the DS1673E-5+ directly replace the DS1673E-5 in existing designs?

A: Yes. The DS1673E-5+ is electrically and mechanically identical to the DS1673E-5. All supply voltages, interface specifications, operating temperature ranges, and functional features are equivalent. PCB layout and schematic modifications are not required.

Q: What is the significance of the product status difference?

A: The DS1673E-5 is classified as obsolete, indicating discontinued manufacturing and limited availability. The DS1673E-5+ is actively produced, ensuring reliable supply for current and future applications.

Q: Does the RoHS compliance difference affect compatibility?

A: No functional or electrical compatibility impact exists. The DS1673E-5+ meets ROHS3 compliance standards, providing improved environmental and regulatory alignment for systems subject to RoHS requirements. The component remains functionally equivalent regardless of RoHS status.

Q: Are there packaging considerations for the DS1673E-5+?

A: The DS1673E-5+ is supplied in tube packaging, standard for surface mount components. The 20-TSSOP package dimensions (0.173", 4.40mm Width) remain identical to the original part, supporting existing pick-and-place and reflow processes without modification.

Q: What are the key parameters that define substitution eligibility?

A: Substitution is determined by matching base product number (DS1673), package type (20-TSSOP), interface (3-Wire Serial), supply voltages (4.5V ~ 5.5V primary, 2.5V ~ 3.7V battery), timekeeping current (300µA @ 5V), operating temperature (0°C ~ 70°C), and feature set (Alarm, Leap Year, Watchdog Timer).