Real Time Clocks

Manufacturer Series Package/Case Packaging Product Status Programmable Type Features Memory Size Time Format Date Format Interface Voltage - Supply Voltage - Supply, Battery Current - Timekeeping (Max) Operating Temperature Mounting Type Grade Qualification Supplier Device Package























































































































































































































































































































































































































































































































































































































































































































































































































































































































































































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Photo Mfr. Part # Availability Price Quantity Datasheet Series Package/Case Packaging Product Status Programmable Type Features Memory Size Time Format Date Format Interface Voltage - Supply Voltage - Supply, Battery Current - Timekeeping (Max) Operating Temperature Mounting Type Grade Qualification Supplier Device Package
DS1746P-70IND Analog Devices Inc./Maxim Integrated

DS1746P-70IND

IC RTC CLK/CALENDAR PAR 34PCM

Analog Devices Inc./Maxim Integrated

3,745
RFQ
DS1746P-70IND Datasheet

Datasheet

- 34-PowerCap™ Module Tube Obsolete Not Verified Clock/Calendar Leap Year, NVSRAM, Y2K 128KB HH:MM:SS (24 hr) YY-MM-DD-dd Parallel 4.5V ~ 5.5V 3V 4mA @ 5V -40°C ~ 85°C Surface Mount - - 34-PowerCap Module
DS1746WP-120IND Analog Devices Inc./Maxim Integrated

DS1746WP-120IND

IC RTC CLK/CALENDAR PAR 34PCM

Analog Devices Inc./Maxim Integrated

4,876
RFQ
DS1746WP-120IND Datasheet

Datasheet

- 34-PowerCap™ Module Tube Obsolete Not Verified Clock/Calendar Leap Year, NVSRAM, Y2K 128KB HH:MM:SS (24 hr) YY-MM-DD-dd Parallel 2.97V ~ 3.63V 3V 2mA @ 3.3V -40°C ~ 85°C Surface Mount - - 34-PowerCap Module
DS1742-70+ Analog Devices Inc./Maxim Integrated

DS1742-70+

IC RTC CLK/CALENDAR PAR 24EDIP

Analog Devices Inc./Maxim Integrated

4,147
RFQ
DS1742-70+ Datasheet

Datasheet

- 24-DIP Module (0.600", 15.24mm) Tube Obsolete Not Verified Clock/Calendar Leap Year, NVSRAM, Y2K 2KB HH:MM:SS (24 hr) YY-MM-DD-dd Parallel 4.5V ~ 5.5V - 3mA @ 5V 0°C ~ 70°C Through Hole - - 24-EDIP
DS1644-120+ Analog Devices Inc./Maxim Integrated

DS1644-120+

IC RTC CLK/CALENDAR PAR 28EDIP

Analog Devices Inc./Maxim Integrated

1,107
RFQ
DS1644-120+ Datasheet

Datasheet

- 28-DIP Module (0.600", 15.24mm) Tube Obsolete Not Verified Clock/Calendar Leap Year, NVSRAM 32KB HH:MM:SS (24 hr) YY-MM-DD-dd Parallel 4.5V ~ 5.5V - 4mA @ 4.5V ~ 5.5V 0°C ~ 70°C Through Hole - - 28-EDIP
DS1554-70IND Analog Devices Inc./Maxim Integrated

DS1554-70IND

IC RTC CLK/CALENDAR PAR 32EDIP

Analog Devices Inc./Maxim Integrated

4,097
RFQ
DS1554-70IND Datasheet

Datasheet

- 32-DIP Module (0.600", 15.24mm) Tube Obsolete Not Verified Clock/Calendar Alarm, Leap Year, NVSRAM, Watchdog Timer, Y2K 32KB HH:MM:SS (24 hr) YY-MM-DD-dd Parallel 4.5V ~ 5.5V - 6mA @ 5V -40°C ~ 85°C Through Hole - - 32-EDIP
DS1743-70+ Analog Devices Inc./Maxim Integrated

DS1743-70+

IC RTC CLK/CALENDAR PAR 28EDIP

Analog Devices Inc./Maxim Integrated

4,162
RFQ
DS1743-70+ Datasheet

Datasheet

- 28-DIP Module (0.600", 15.24mm) Tube Obsolete Not Verified Clock/Calendar Leap Year, NVSRAM, Y2K 8KB HH:MM:SS (24 hr) YY-MM-DD-dd Parallel 4.5V ~ 5.5V - 3mA @ 5V 0°C ~ 70°C Through Hole - - 28-EDIP
DS1647P-120 Analog Devices Inc./Maxim Integrated

DS1647P-120

IC RTC CLK/CALENDAR PAR 34PCM

Analog Devices Inc./Maxim Integrated

3,518
RFQ
DS1647P-120 Datasheet

Datasheet

- 34-PowerCap™ Module Tube Obsolete Not Verified Clock/Calendar Leap Year, NVSRAM 512KB HH:MM:SS (24 hr) YY-MM-DD-dd Parallel 4.5V ~ 5.5V 3V 4mA @ 4.5V ~ 5.5V 0°C ~ 70°C Surface Mount - - 34-PowerCap Module
DS1556-70 Analog Devices Inc./Maxim Integrated

DS1556-70

IC RTC CLK/CALENDAR PAR 32EDIP

Analog Devices Inc./Maxim Integrated

4,106
RFQ
DS1556-70 Datasheet

Datasheet

- 32-DIP Module (0.600", 15.24mm) Tube Obsolete Not Verified Clock/Calendar Alarm, Leap Year, NVSRAM, Watchdog Timer, Y2K 128KB HH:MM:SS (24 hr) YY-MM-DD-dd Parallel 4.5V ~ 5.5V - 6mA @ 5V 0°C ~ 70°C Through Hole - - 32-EDIP
DS1244W-120 Analog Devices Inc./Maxim Integrated

DS1244W-120

IC RTC PHANTOM CHIP PAR 28EDIP

Analog Devices Inc./Maxim Integrated

4,977
RFQ
DS1244W-120 Datasheet

Datasheet

- 28-DIP Module (0.600", 15.24mm) Tube Obsolete Not Verified Phantom Time Chip Leap Year, NVSRAM 32KB HH:MM:SS:hh (12/24 hr) YY-MM-DD-dd Parallel 2.97V ~ 3.63V - 7mA @ 3.3V 0°C ~ 70°C Through Hole - - 28-EDIP
DS1543-70 Analog Devices Inc./Maxim Integrated

DS1543-70

IC RTC CLK/CALENDAR PAR 28EDIP

Analog Devices Inc./Maxim Integrated

3,565
RFQ
DS1543-70 Datasheet

Datasheet

- 28-DIP Module (0.600", 15.24mm) Tube Obsolete Not Verified Clock/Calendar Alarm, Leap Year, NVSRAM, Watchdog Timer 8KB HH:MM:SS (24 hr) YY-MM-DD-dd Parallel 4.5V ~ 5.5V - 3mA @ 5V 0°C ~ 70°C Through Hole - - 28-EDIP
DS1543W-120 Analog Devices Inc./Maxim Integrated

DS1543W-120

IC RTC CLK/CALENDAR PAR 28EDIP

Analog Devices Inc./Maxim Integrated

1,897
RFQ
DS1543W-120 Datasheet

Datasheet

- 28-DIP Module (0.600", 15.24mm) Tube Obsolete Not Verified Clock/Calendar Alarm, Leap Year, NVSRAM, Watchdog Timer 8KB HH:MM:SS (24 hr) YY-MM-DD-dd Parallel 2.97V ~ 3.63V - 2mA @ 3.3V 0°C ~ 70°C Through Hole - - 28-EDIP
DS1556P-70IND Analog Devices Inc./Maxim Integrated

DS1556P-70IND

IC RTC CLK/CALENDAR PAR 34PCM

Analog Devices Inc./Maxim Integrated

1,790
RFQ
DS1556P-70IND Datasheet

Datasheet

- 34-PowerCap™ Module Tube Obsolete Not Verified Clock/Calendar Alarm, Leap Year, NVSRAM, Watchdog Timer, Y2K 128KB HH:MM:SS (24 hr) YY-MM-DD-dd Parallel 4.5V ~ 5.5V 3V 6mA @ 5V 0°C ~ 70°C Surface Mount - - 34-PowerCap Module
DS1248YP-70 Analog Devices Inc./Maxim Integrated

DS1248YP-70

IC RTC PHANTOM CHIP PAR 34PCM

Analog Devices Inc./Maxim Integrated

2,258
RFQ
DS1248YP-70 Datasheet

Datasheet

- 34-PowerCap™ Module Tube Obsolete Not Verified Phantom Time Chip NVSRAM 128KB HH:MM:SS:hh (12/24 hr) YY-MM-DD-dd Parallel 4.5V ~ 5.5V 3V 10mA @ 5V 0°C ~ 70°C Surface Mount - - 34-PowerCap Module
DS17885SN-3+ Analog Devices Inc./Maxim Integrated

DS17885SN-3+

IC RTC CLK/CALENDAR PAR 24SOIC

Analog Devices Inc./Maxim Integrated

4,919
RFQ
DS17885SN-3+ Datasheet

Datasheet

- 24-SOIC (0.295", 7.50mm Width) Tube Active Not Verified Clock/Calendar Alarm, Daylight Savings, Leap Year, NVSRAM, Square Wave Output 8KB HH:MM:SS (12/24 hr) YY-MM-DD-dd Parallel 2.7V ~ 3.7V 2.5V ~ 3.7V 2mA @ 2.7V ~ 3.7V -40°C ~ 85°C Surface Mount - - 24-SOIC
DS1557P-70 Analog Devices Inc./Maxim Integrated

DS1557P-70

IC RTC CLK/CALENDAR PAR 34PCM

Analog Devices Inc./Maxim Integrated

4,825
RFQ
DS1557P-70 Datasheet

Datasheet

- 34-PowerCap™ Module Tube Obsolete Not Verified Clock/Calendar Alarm, Leap Year, NVSRAM, Watchdog Timer, Y2K 512KB HH:MM:SS (24 hr) YY-MM-DD-dd Parallel 4.5V ~ 5.5V 3V 6mA @ 5V 0°C ~ 70°C Surface Mount - - 34-PowerCap Module
DS1747WP-120IND Analog Devices Inc./Maxim Integrated

DS1747WP-120IND

IC RTC CLK/CALENDAR PAR 34PCM

Analog Devices Inc./Maxim Integrated

4,368
RFQ
DS1747WP-120IND Datasheet

Datasheet

- 34-PowerCap™ Module Tube Obsolete Not Verified Clock/Calendar Leap Year, NVSRAM, Y2K 512KB HH:MM:SS (24 hr) YY-MM-DD-dd Parallel 2.97V ~ 3.63V 3V 2mA @ 3.3V -40°C ~ 85°C Surface Mount - - 34-PowerCap Module
DS1747P-70IND Analog Devices Inc./Maxim Integrated

DS1747P-70IND

IC RTC CLK/CALENDAR PAR 34PCM

Analog Devices Inc./Maxim Integrated

2,366
RFQ
DS1747P-70IND Datasheet

Datasheet

- 34-PowerCap™ Module Tube Obsolete Not Verified Clock/Calendar Leap Year, NVSRAM, Y2K 512KB HH:MM:SS (24 hr) YY-MM-DD-dd Parallel 4.5V ~ 5.5V 3V 4mA @ 5V -40°C ~ 85°C Surface Mount - - 34-PowerCap Module
DS1746WP-120 Analog Devices Inc./Maxim Integrated

DS1746WP-120

IC RTC CLK/CALENDAR PAR 34PCM

Analog Devices Inc./Maxim Integrated

1,727
RFQ
DS1746WP-120 Datasheet

Datasheet

- 34-PowerCap™ Module Tube Obsolete Not Verified Clock/Calendar Leap Year, NVSRAM, Y2K 128KB HH:MM:SS (24 hr) YY-MM-DD-dd Parallel 2.97V ~ 3.63V 3V 2mA @ 3.3V 0°C ~ 70°C Surface Mount - - 34-PowerCap Module
DS1248W-120 Analog Devices Inc./Maxim Integrated

DS1248W-120

IC RTC PHANTOM CHIP PAR 32EDIP

Analog Devices Inc./Maxim Integrated

4,535
RFQ
DS1248W-120 Datasheet

Datasheet

- 32-DIP Module (0.600", 15.24mm) Tube Obsolete Not Verified Phantom Time Chip NVSRAM 128KB HH:MM:SS:hh (12/24 hr) YY-MM-DD-dd Parallel 2.97V ~ 3.63V - 7mA @ 3.3V 0°C ~ 70°C Through Hole - - 32-EDIP
DS1746W-120IND Analog Devices Inc./Maxim Integrated

DS1746W-120IND

IC RTC CLK/CALENDAR PAR 32EDIP

Analog Devices Inc./Maxim Integrated

4,496
RFQ
DS1746W-120IND Datasheet

Datasheet

- 32-DIP Module (0.600", 15.24mm) Tube Obsolete Not Verified Clock/Calendar Leap Year, NVSRAM, Y2K 128KB HH:MM:SS (24 hr) YY-MM-DD-dd Parallel 2.97V ~ 3.63V - 2mA @ 3.3V -40°C ~ 85°C Through Hole - - 32-EDIP
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Real Time Clocks Electronic Components Sourcing and Lifecycle Support

FPGAX is a global sourcing partner specializing in FPGA and programmable logic solutions for engineering and manufacturing organizations worldwide. For customers sourcing Real Time Clocks components, we support both current production requirements and long-term component availability across demanding product lifecycles.

Our sourcing approach combines traceability, supply stability, and technical coordination. FPGAX is certified to AS9120B, ISO 9001:2008, and ISO 14001 standards and supports procurement programs where continuity, documentation, and dependable component supply are important.

How FPGAX Supports Real Time Clocks Requirements

  • Active component sourcing: support for current FPGA, programmable logic, and related semiconductor requirements.
  • End-of-life sourcing: assistance with obsolete and hard-to-find parts when designs must remain in production.
  • Lifecycle management: sourcing support during product transitions, allocation periods, and supply interruptions.
  • Design continuity: long-term supply support intended to reduce redesign pressure and production disruption.
  • Major programmable logic brands: sourcing coverage includes Xilinx, Intel/Altera, Lattice, Microchip, and QuickLogic.

Supply Support at a Glance

Requirement FPGAX Support
Current production Active FPGA, programmable logic, and semiconductor component sourcing
Legacy programs End-of-life and hard-to-find component sourcing
Supply continuity Lifecycle transition and long-term availability support
Quality requirements Traceable sourcing and quality-management processes

Focused on FPGA and Programmable Logic Supply

FPGAX focuses on helping customers maintain access to critical programmable devices throughout the full component lifecycle. Whether the requirement is for a current design, an established production program, or an older platform facing component obsolescence, our goal is to provide a stable sourcing path and help customers maintain design and manufacturing continuity.

Real Time Clocks FAQ

Can FPGAX source both active and end-of-life Real Time Clocks components?

Yes. FPGAX supports sourcing for both active components and end-of-life or hard-to-find parts, with an emphasis on maintaining supply continuity for engineering and manufacturing programs.

Which programmable logic manufacturers does FPGAX support?

Our core sourcing coverage includes major FPGA and programmable logic manufacturers such as Xilinx, Intel/Altera, Lattice, Microchip, and QuickLogic, subject to specific part requirements and availability.

How does FPGAX help with component lifecycle changes?

We support customers through lifecycle transitions by helping locate current or legacy supply, reducing exposure to supply disruptions, and supporting long-term availability for designs that need to remain in production.

What quality and traceability standards does FPGAX follow?

FPGAX states certification to AS9120B, ISO 9001:2008, and ISO 14001 standards. Our sourcing services are structured around traceability, stable supply, and quality-management requirements.

What information should I provide for a Real Time Clocks sourcing request?

Providing the manufacturer part number, required quantity, target delivery schedule, and any lifecycle or traceability requirements helps us evaluate the sourcing request more efficiently.