DS17487-5 Equivalent & Substitute Parts

Part Overview

The DS17487-5 is a Real Time Clock (RTC) IC with integrated Clock/Calendar functionality, manufactured by Analog Devices Inc./Maxim Integrated. This device provides 4KB of parallel-accessible memory with comprehensive timekeeping features including alarm capability, daylight savings support, leap year compensation, and non-volatile static RAM (NVSRAM). The DS17487-5 is classified as obsolete, making identification of active equivalent parts essential for new designs and ongoing system support.

Substiute Parts

DS17487-5

Analog Devices Inc./Maxim IntegratedIn Stock: 2027DS17487-5 Datasheet

Current PartRFQ

DS17487-5+

Analog Devices Inc./Maxim IntegratedIn Stock: 1528DS17487-5+ Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the DS17487-5 is determined by strict equivalence across the following critical parameters:

• Functional Equivalence: Clock/Calendar type with identical 4KB memory capacity
• Interface Compatibility: Parallel interface architecture
• Electrical Specifications: Supply voltage range (4.5V ~ 5.5V), battery voltage range (2.5V ~ 3.7V), and timekeeping current (3mA @ 4.5V ~ 5.5V)
• Package Compatibility: 24-DIP Module (0.600", 15.24mm) through-hole mounting
• Feature Set: Alarm, Daylight Savings, Leap Year, NVSRAM, and Square Wave Output
• Time/Date Formats: HH:MM:SS (12/24 hr) and YY-MM-DD-dd

The DS17487-5+ meets all substitution criteria as a direct equivalent with identical electrical and mechanical specifications. The primary distinction is product status and compliance certification.

Parameter Comparison

Engineering Selection Recommendations

The DS17487-5+ is the direct functional and electrical equivalent of the DS17487-5. Selection between these parts is determined by regulatory and supply chain considerations:

DS17487-5: Suitable for legacy system maintenance where existing inventory is available and RoHS compliance is not a requirement. Product status is obsolete, indicating limited future availability.

DS17487-5+: Recommended for new designs and ongoing production. This part maintains identical electrical and mechanical specifications while offering active product status and ROHS3 compliance. The tube packaging format supports standard manufacturing workflows.

Both parts are REACH Unaffected and classified under ECCN EAR99 with HTSUS code 8542.39.0001.

Frequently Asked Questions (FAQ)

Q: Can DS17487-5+ directly replace DS17487-5 in existing designs?

A: Yes. The DS17487-5+ is electrically and mechanically equivalent. Pin configuration, voltage requirements, memory capacity, interface protocol, and package dimensions are identical. Direct PCB substitution is supported without design modification.

Q: What is the difference between DS17487-5 and DS17487-5+?

A: The primary differences are product status and compliance certification. DS17487-5 is obsolete and RoHS non-compliant. DS17487-5+ is active production and ROHS3 compliant. All functional and electrical parameters are identical.

Q: Are there packaging differences between these parts?

A: Both parts use 24-DIP Module (0.600", 15.24mm) through-hole packaging. The DS17487-5+ is supplied in tube packaging, while the DS17487-5 packaging format is not specified. Both are compatible with standard DIP sockets and PCB through-hole assembly processes.

Q: What supply voltage range does this RTC IC support?

A: The DS17487-5 and DS17487-5+ support a main supply voltage range of 4.5V to 5.5V and a battery backup voltage range of 2.5V to 3.7V. This dual-voltage design enables continuous timekeeping during main power loss.

Q: Is the DS17487-5 suitable for new product development?

A: No. The DS17487-5 is classified as obsolete. For new designs, the DS17487-5+ is the appropriate selection, offering active product status, ROHS3 compliance, and assured long-term availability.

Q: What memory capacity does this RTC IC provide?

A: Both the DS17487-5 and DS17487-5+ provide 4KB of non-volatile static RAM (NVSRAM) accessible via parallel interface.