DS1244YP-70 Equivalent & Substitute Parts

Part Overview

The DS1244YP-70 is a Real Time Clock (RTC) IC Phantom Time Chip with 32KB parallel interface memory, manufactured by Analog Devices Inc./Maxim Integrated. This component integrates timekeeping functionality with non-volatile static RAM (NVSRAM) in a 34-PowerCap™ Module surface mount package. The DS1244YP-70 is classified as obsolete, making identification of active equivalent parts essential for new designs and production continuity. The DS1244YP-70+ provides a direct functional equivalent with improved compliance status.

Substiute Parts

DS1244YP-70

Analog Devices Inc./Maxim IntegratedIn Stock: 664DS1244YP-70 Datasheet

Current PartRFQ

DS1244YP-70+

Analog Devices Inc./Maxim IntegratedIn Stock: 937DS1244YP-70+ Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The DS1244YP-70+ qualifies as a direct substitute for the DS1244YP-70 based on identical electrical and functional parameters. Substitution is valid when the following criteria are met:

• Memory capacity: 32KB
• Interface: Parallel
• Time format: HH:MM:SS:hh (12/24 hr)
• Date format: YY-MM-DD-dd
• Supply voltage range: 4.5V ~ 5.5V
• Battery voltage: 3V
• Timekeeping current: 10mA @ 5V maximum
• Operating temperature: 0°C ~ 70°C
• Package: 34-PowerCap™ Module surface mount

The DS1244YP-70+ maintains full electrical and mechanical compatibility with the obsolete DS1244YP-70, with the primary distinction being active product status and improved RoHS compliance.

Parameter Comparison

Engineering Selection Recommendations

The DS1244YP-70+ is the appropriate selection for applications currently using or specifying the DS1244YP-70. The substitute part maintains full functional and electrical equivalence while offering two significant advantages:

1. Active product status ensures continued availability and supply chain reliability
2. ROHS3 compliance satisfies current environmental and regulatory requirements, whereas the original DS1244YP-70 is RoHS non-compliant

Both parts share identical electrical specifications, package geometry, and functional characteristics. Selection of the DS1244YP-70+ eliminates obsolescence risk and aligns with current manufacturing compliance standards.

Frequently Asked Questions (FAQ)

Q: Are the DS1244YP-70 and DS1244YP-70+ pin-compatible?

A: Yes. Both parts use the 34-PowerCap™ Module package with identical pinout and surface mount footprint. Direct board-level substitution is possible without layout modifications.

Q: What is the difference between the DS1244YP-70 and DS1244YP-70+?

A: The primary differences are product status and RoHS compliance. The DS1244YP-70+ is an active product with ROHS3 compliance, while the DS1244YP-70 is obsolete and RoHS non-compliant. Electrical and functional specifications are identical.

Q: Can I use the DS1244YP-70+ as a direct replacement in existing designs?

A: Yes. The DS1244YP-70+ provides full electrical and mechanical compatibility. No circuit modifications, firmware changes, or board redesign are required.

Q: What packaging options are available?

A: The DS1244YP-70 packaging is not specified in available documentation. The DS1244YP-70+ is supplied in Tube packaging.

Q: Are there any temperature or voltage derating considerations between these parts?

A: No. Both parts operate within identical voltage ranges (4.5V ~ 5.5V supply, 3V battery) and temperature ranges (0°C ~ 70°C). Operating parameters are equivalent.

Q: What is the NVSRAM feature?

A: NVSRAM (Non-Volatile Static RAM) combines static RAM with non-volatile storage, preserving data during power loss. This feature is present in both the DS1244YP-70 and DS1244YP-70+.