DS1315SN-33 Equivalent & Substitute Parts

Part Overview

The DS1315SN-33 is a Real Time Clock (RTC) IC Phantom Time Chip with parallel interface, housed in a 16-SOIC package. This component provides timekeeping functionality with leap year support and operates across a wide temperature range suitable for industrial and consumer applications. The DS1315SN-33 is classified as obsolete, making identification of compatible substitute parts essential for ongoing system support, design updates, and procurement continuity.

Substiute Parts

DS1315SN-33

Analog Devices Inc./Maxim IntegratedIn Stock: 980DS1315SN-33 Datasheet

Current PartRFQ

DS1315SN-33+

Analog Devices Inc./Maxim IntegratedIn Stock: 1481DS1315SN-33+ Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the DS1315SN-33 is determined by strict equivalence across the following critical parameters:

• Package / Case: 16-SOIC (0.295", 7.50mm Width) — ensures mechanical and electrical compatibility with existing PCB layouts
• Interface: Parallel — maintains signal protocol compatibility with host systems
• Voltage - Supply: 3V ~ 3.6V — ensures operation within the same power supply range
• Voltage - Supply, Battery: 2.5V ~ 3.7V — maintains battery backup functionality
• Current - Timekeeping (Max): 1.1mA @ 3.3V — confirms power consumption characteristics
• Operating Temperature: -40°C ~ 85°C — validates thermal operating range
• Time Format: HH:MM:SS:hh (12/24 hr) and Date Format: YY-MM-DD-dd — ensures data format compatibility
• Features: Leap Year — confirms functional feature parity

Parts meeting all these criteria are classified as direct substitutes.

Parameter Comparison

Engineering Selection Recommendations

The DS1315SN-33+ is a direct functional and electrical equivalent to the DS1315SN-33. Both parts share identical electrical specifications, package geometry, and interface characteristics. The primary distinction is product status: the DS1315SN-33 is obsolete, while the DS1315SN-33+ is active and available in production quantities.

For new designs or system updates, the DS1315SN-33+ is the appropriate selection. This part offers improved compliance status (ROHS3 Compliant versus RoHS non-compliant) and is supplied in tube packaging, facilitating automated assembly processes. Electrical and functional performance remain equivalent across all specified parameters.

Frequently Asked Questions (FAQ)

Q: Can DS1315SN-33+ be used as a direct replacement for DS1315SN-33 in existing designs?

A: Yes. Both parts are electrically and functionally identical across all specified parameters: package, interface, voltage ranges, current consumption, operating temperature, time/date formats, and leap year functionality. PCB layout and firmware compatibility are maintained.

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

A: The DS1315SN-33 is classified as obsolete, indicating discontinued manufacturing and limited availability. The DS1315SN-33+ is active, ensuring reliable procurement and ongoing supply for production requirements.

Q: Does the RoHS compliance difference affect substitution?

A: RoHS compliance is a regulatory and environmental consideration. The DS1315SN-33+ meets ROHS3 standards, while the DS1315SN-33 does not. For applications subject to RoHS regulations or environmental requirements, the DS1315SN-33+ is the compliant choice. Electrical functionality remains identical.

Q: Are there packaging differences between these parts?

A: The DS1315SN-33+ is supplied in tube packaging, optimized for automated pick-and-place assembly. The DS1315SN-33 packaging is not specified. Both use the same 16-SOIC physical package format.

Q: What parameters must remain identical for substitution?

A: Critical parameters for substitution equivalence are: 16-SOIC package geometry, parallel interface, 3V–3.6V supply voltage, 2.5V–3.7V battery voltage, 1.1mA maximum timekeeping current, -40°C to 85°C operating temperature, HH:MM:SS:hh (12/24 hr) time format, YY-MM-DD-dd date format, and leap year functionality.