DS1216H Equivalent & Substitute Parts

Part Overview

The DS1216H is a Smartwatch RAM integrated circuit manufactured by Analog Devices Inc./Maxim Integrated. This memory IC provides 4M capacity at 5V supply voltage in a 32-DIP through-hole package. The DS1216H is classified as obsolete, making identification of functionally compatible alternatives essential for ongoing system support and new design implementations where legacy compatibility is required.

Substiute Parts

DS1216H

Analog Devices Inc./Maxim IntegratedIn Stock: 1261DS1216H Datasheet

Current PartRFQ

DS1251Y-70+

Analog Devices Inc./Maxim IntegratedIn Stock: 3655DS1251Y-70+ Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the DS1216H is determined by the following critical parameters:

• Package Compatibility: 32-DIP (0.600", 15.24mm) form factor with through-hole mounting
• Voltage Supply Range: 4.5V ~ 5.5V operating voltage
• Operating Temperature: 0°C ~ 70°C range
• Interface Type: Parallel interface for memory access
• Pinout Alignment: Mechanical and electrical pin configuration match

The DS1251Y-70+ qualifies as a substitute based on matching package geometry, voltage supply specifications, operating temperature range, and parallel interface architecture. Both components utilize identical 32-DIP module packaging and operate within the same electrical parameters, enabling direct socket-level replacement in legacy systems.

Parameter Comparison

Engineering Selection Recommendations

The DS1251Y-70+ is the designated substitute for the obsolete DS1216H. Selection of this alternative is supported by:

• Product Status: DS1251Y-70+ maintains active production status, ensuring availability for replacement and new implementations
• Compliance Advantage: DS1251Y-70+ achieves ROHS3 compliance, whereas the DS1216H is RoHS non-compliant, providing environmental and regulatory benefits for systems requiring modern compliance standards
• Electrical Compatibility: Identical voltage supply range (4.5V ~ 5.5V) and operating temperature specifications (0°C ~ 70°C) ensure functional equivalence
• Package Equivalence: Both components utilize 32-DIP module packaging with matching 0.600" (15.24mm) pitch, enabling direct socket replacement without PCB redesign

Frequently Asked Questions (FAQ)

Q: Can DS1251Y-70+ directly replace DS1216H in existing designs?

A: Yes. Both components share identical 32-DIP package geometry, voltage supply specifications (4.5V ~ 5.5V), operating temperature range (0°C ~ 70°C), and parallel interface architecture. Direct socket replacement is supported without circuit modification.

Q: What is the primary difference between these components?

A: The DS1216H is classified as obsolete and RoHS non-compliant, while the DS1251Y-70+ maintains active production status and achieves ROHS3 compliance. The DS1251Y-70+ also incorporates additional features including leap year support and NVSRAM functionality.

Q: Are there any package considerations for substitution?

A: Both components utilize 32-DIP module packaging with identical 0.600" (15.24mm) pitch specifications. No package-related modifications are required for substitution.

Q: What compliance advantages does the substitute provide?

A: The DS1251Y-70+ is ROHS3 compliant, meeting modern environmental and regulatory requirements. The original DS1216H does not meet RoHS standards, making the substitute preferable for systems requiring compliance certification.

Q: Is the operating temperature range identical?

A: Yes. Both the DS1216H and DS1251Y-70+ operate across the 0°C ~ 70°C temperature range with matching 4.5V ~ 5.5V supply voltage specifications.