DS1321E+ Equivalent & Substitute Parts Reference

Part Overview

The DS1321E+ is a nonvolatile RAM controller with integrated battery monitoring functionality, manufactured by Analog Devices Inc./Maxim Integrated. This surface-mount integrated circuit is designed for applications requiring nonvolatile memory control with power supply supervision in 5V systems. The part is currently in active production status with 1121 units available in new original stock. Alternative equivalent parts may be required due to supply chain constraints, design revisions, or inventory availability.

Substiute Parts

DS1321E+

Analog Devices Inc./Maxim IntegratedIn Stock: 1165DS1321E+ Datasheet

Current PartRFQ

DS1321E+

Analog Devices Inc./Maxim IntegratedIn Stock: 1165DS1321E+ Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Equivalent and substitute parts for the DS1321E+ must maintain strict compatibility across the following critical parameters:

• Controller Type: Nonvolatile RAM functionality with battery monitoring capability
• Supply Voltage Range: 4.75V ~ 5.5V (5V nominal systems)
• Operating Temperature Range: -40°C ~ 85°C
• Package / Case: 20-TSSOP form factor with identical pin configuration
• Mounting Type: Surface Mount technology
• Regulatory Compliance: ROHS3 Compliant, REACH Unaffected status

Substitution is valid only when all parameters listed above are identical. The DS1321E+ represents the direct equivalent part within the Analog Devices Inc./Maxim Integrated product line for this specific application requirement.

Parameter Comparison

Engineering Selection Recommendations

The DS1321E+ is the specified part for this application. Selection of equivalent components must be based on:

• Product Status: Only active production parts are suitable for new designs and ongoing production
• Regulatory Compliance: ROHS3 compliance and REACH unaffected status are mandatory for current manufacturing standards
• Package Compatibility: The 20-TSSOP package with 0.173" width is a fixed requirement for PCB layout and assembly processes
• Electrical Specifications: Supply voltage range of 4.75V ~ 5.5V and operating temperature range of -40°C ~ 85°C must be maintained for system reliability

No alternative manufacturers or part numbers meet the complete parameter set for direct substitution at this time based on the provided specifications.

Frequently Asked Questions (FAQ)

Q: Can I substitute the DS1321E+ with a different manufacturer's nonvolatile RAM controller?

A: Substitution with parts from other manufacturers is not supported based on the provided specifications. The DS1321E+ is the specified equivalent part. Any alternative would require complete electrical and mechanical parameter verification against your system requirements.

Q: What does the "E+" suffix indicate in the part number DS1321E+?

A: The "E+" suffix is part of the manufacturer's part numbering scheme for the DS1321 base product. It indicates the specific variant and packaging configuration supplied by Analog Devices Inc./Maxim Integrated.

Q: Is the 20-TSSOP package interchangeable with other package types?

A: No. The 20-TSSOP (0.173", 4.40mm Width) package is a fixed requirement. Different package types have different pin configurations, footprints, and thermal characteristics that are not interchangeable without PCB redesign.

Q: What is the significance of Moisture Sensitivity Level 1?

A: MSL 1 indicates unlimited shelf life without special moisture control measures. This part does not require desiccant packaging or baking procedures prior to assembly, simplifying supply chain handling.

Q: Does the DS1321E+ meet current environmental compliance standards?

A: Yes. The part is ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements for electronic components in most markets.