DS1216B Equivalent & Substitute Parts

Part Overview

The DS1216B is a smartwatch RAM integrated circuit manufactured by Analog Devices Inc./Maxim Integrated, designed for memory applications in smartwatch systems. This 16K/64K memory device operates in a 28-DIP through-hole package and has been classified as obsolete. Due to its discontinued status, identifying functionally compatible substitute components is essential for system redesign, legacy product support, and continued manufacturing operations.

Substiute Parts

DS1216B

Analog Devices Inc./Maxim IntegratedIn Stock: 1049DS1216B Datasheet

Current PartRFQ

DS1243Y-120+

Analog Devices Inc./Maxim IntegratedIn Stock: 1224DS1243Y-120+ Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the DS1216B is determined by the following critical parameters:

• Package Compatibility: 28-DIP (0.600", 15.24mm) through-hole form factor
• Voltage Supply Range: 4.5V ~ 5.5V operating voltage
• Operating Temperature Range: 0°C ~ 70°C
• Mounting Type: Through-hole configuration
• Manufacturer Ecosystem: Analog Devices Inc./Maxim Integrated product line

The DS1243Y-120+ is identified as a manufacturer-recommended substitute. While the DS1243Y-120+ functions as a Real Time Clock (RTC) Phantom Time Chip rather than a dedicated RAM device, it maintains electrical and mechanical compatibility through matching voltage supply specifications, operating temperature range, and identical 28-DIP package configuration. Both components share the same through-hole mounting methodology and are sourced from the same manufacturer ecosystem.

Parameter Comparison

Engineering Selection Recommendations

The DS1243Y-120+ is the manufacturer-designated substitute for the obsolete DS1216B. Selection of this substitute is supported by the following engineering criteria:

Product Status Alignment: The DS1243Y-120+ maintains active product status with ongoing manufacturer support, whereas the DS1216B is obsolete and subject to supply discontinuation.

Compliance Improvement: The DS1243Y-120+ achieves ROHS3 compliance, addressing regulatory requirements that the non-compliant DS1216B cannot satisfy in modern manufacturing environments.

Electrical Compatibility: Both components operate within identical voltage supply ranges (4.5V ~ 5.5V) and temperature specifications (0°C ~ 70°C), ensuring direct electrical substitution without circuit redesign.

Mechanical Compatibility: Both components utilize the 28-DIP through-hole package configuration with matching physical dimensions (0.600", 15.24mm), enabling direct socket-level replacement.

Manufacturer Continuity: Both components originate from Analog Devices Inc./Maxim Integrated, ensuring consistent design philosophy and long-term availability through established supply channels.

Frequently Asked Questions (FAQ)

Q: Can the DS1243Y-120+ be used as a direct replacement for the DS1216B?

A: Yes. Both components share identical voltage supply specifications (4.5V ~ 5.5V), operating temperature range (0°C ~ 70°C), and 28-DIP package configuration. Direct socket-level substitution is mechanically and electrically feasible.

Q: What is the primary functional difference between these components?

A: The DS1216B is a smartwatch RAM device, while the DS1243Y-120+ is a Real Time Clock (RTC) Phantom Time Chip. Functional compatibility depends on system requirements and circuit design.

Q: Does the DS1243Y-120+ require any circuit modifications?

A: Electrical and mechanical compatibility is maintained through matching voltage supply and package specifications. Circuit-level integration requirements depend on the specific application and system architecture.

Q: Why is the DS1216B classified as obsolete?

A: The DS1216B has been discontinued by the manufacturer. The DS1243Y-120+ represents the active product line continuation from Analog Devices Inc./Maxim Integrated.

Q: What is the significance of RoHS3 compliance on the DS1243Y-120+?

A: ROHS3 compliance indicates adherence to current environmental and regulatory standards for electronic component manufacturing. The non-compliant DS1216B may not meet requirements for new product designs or regulated markets.

Q: Are both components available in the same package variants?

A: Both components are supplied in 28-DIP through-hole packages with identical physical dimensions (0.600", 15.24mm). Package compatibility is confirmed.