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
DS1501YS+T&R Analog Devices Inc./Maxim Integrated

DS1501YS+T&R

IC RTC CLK/CALENDAR PAR 28SOIC

Analog Devices Inc./Maxim Integrated

4,946
RFQ
DS1501YS+T&R Datasheet

Datasheet

- 28-SOIC (0.295", 7.50mm Width) Tape & Reel (TR) Obsolete Not Verified Clock/Calendar Alarm, Leap Year, NVSRAM, Square Wave Output, Watchdog Timer, Y2K 256B HH:MM:SS (24 hr) YY-MM-DD-dd Parallel 4.5V ~ 5.5V 2.5V ~ 3.7V 5mA @ 4.5V ~ 5.5V 0°C ~ 70°C Surface Mount - - 28-SOIC
DS1501YSN+ Analog Devices Inc./Maxim Integrated

DS1501YSN+

IC RTC CLK/CALENDAR PAR 28SOIC

Analog Devices Inc./Maxim Integrated

4,837
RFQ
DS1501YSN+ Datasheet

Datasheet

- 28-SOIC (0.295", 7.50mm Width) Tube Obsolete Not Verified Clock/Calendar Alarm, Leap Year, NVSRAM, Square Wave Output, Watchdog Timer, Y2K 256B HH:MM:SS (24 hr) YY-MM-DD-dd Parallel 4.5V ~ 5.5V 2.5V ~ 3.7V 5mA @ 4.5V ~ 5.5V -40°C ~ 85°C Surface Mount - - 28-SOIC
DS1501YSN+T&R Analog Devices Inc./Maxim Integrated

DS1501YSN+T&R

IC RTC CLK/CALENDAR PAR 28SOIC

Analog Devices Inc./Maxim Integrated

4,346
RFQ
DS1501YSN+T&R Datasheet

Datasheet

- 28-SOIC (0.295", 7.50mm Width) Tape & Reel (TR) Obsolete Not Verified Clock/Calendar Alarm, Leap Year, NVSRAM, Square Wave Output, Watchdog Timer, Y2K 256B HH:MM:SS (24 hr) YY-MM-DD-dd Parallel 4.5V ~ 5.5V 2.5V ~ 3.7V 5mA @ 4.5V ~ 5.5V -40°C ~ 85°C Surface Mount - - 28-SOIC
DS1553-100+ Analog Devices Inc./Maxim Integrated

DS1553-100+

IC RTC CLK/CALENDAR PAR 28EDIP

Analog Devices Inc./Maxim Integrated

2,220
RFQ
DS1553-100+ Datasheet

Datasheet

- 28-DIP Module (0.600", 15.24mm) Tube Obsolete Not Verified Clock/Calendar Alarm, Leap Year, NVSRAM, Watchdog Timer, 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
DS1553P-100+ Analog Devices Inc./Maxim Integrated

DS1553P-100+

IC RTC CLK/CALENDAR PAR 34PCM

Analog Devices Inc./Maxim Integrated

1,065
RFQ
DS1553P-100+ Datasheet

Datasheet

- 34-PowerCap™ Module Tube Obsolete Not Verified Clock/Calendar Alarm, Leap Year, NVSRAM, Watchdog Timer, Y2K 8KB HH:MM:SS (24 hr) YY-MM-DD-dd Parallel 4.5V ~ 5.5V 3V 3mA @ 5V 0°C ~ 70°C Surface Mount - - 34-PowerCap Module
DS1643P-100+ Analog Devices Inc./Maxim Integrated

DS1643P-100+

IC RTC CLK/CALENDAR PAR 34PCM

Analog Devices Inc./Maxim Integrated

1,662
RFQ
DS1643P-100+ Datasheet

Datasheet

- 34-PowerCap™ Module Tube Obsolete Not Verified Clock/Calendar Leap Year, NVSRAM 8KB HH:MM:SS (24 hr) YY-MM-DD-dd Parallel 4.5V ~ 5.5V 3V 3mA @ 5V 0°C ~ 70°C Surface Mount - - 34-PowerCap Module
DS1647-120+ Analog Devices Inc./Maxim Integrated

DS1647-120+

IC RTC CLK/CALENDAR PAR 32EDIP

Analog Devices Inc./Maxim Integrated

4,117
RFQ
DS1647-120+ Datasheet

Datasheet

- 32-DIP Module (0.600", 15.24mm) Tube Obsolete Not Verified Clock/Calendar Leap Year, NVSRAM 512KB HH:MM:SS (24 hr) YY-MM-DD-dd Parallel 4.5V ~ 5.5V - 4mA @ 4.5 V ~ 5.5 V 0°C ~ 70°C Through Hole - - 32-EDIP
DS1647P-120+ Analog Devices Inc./Maxim Integrated

DS1647P-120+

IC RTC CLK/CALENDAR PAR 34PCM

Analog Devices Inc./Maxim Integrated

2,600
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
DS1672-33+ Analog Devices Inc./Maxim Integrated

DS1672-33+

IC RTC BINARY COUNTER I2C 8DIP

Analog Devices Inc./Maxim Integrated

3,648
RFQ
DS1672-33+ Datasheet

Datasheet

- 8-DIP (0.300", 7.62mm) Tube Obsolete Not Verified Binary Counter Trickle-Charger - Binary Binary I2C, 2-Wire Serial 2.97V ~ 3.63V 1.3V ~ 3.63V 500µA @ 3.63V -40°C ~ 85°C Through Hole - - 8-PDIP
DS1673S-3+ Analog Devices Inc./Maxim Integrated

DS1673S-3+

IC RTC SYST CTRLR SER 20SOIC

Analog Devices Inc./Maxim Integrated

1,441
RFQ
DS1673S-3+ Datasheet

Datasheet

- 20-SOIC (0.295", 7.50mm Width) Tube Obsolete Not Verified Portable System Controller Alarm, Leap Year, Watchdog Timer - HH:MM:SS (12/24 hr) YY-MM-DD-dd 3-Wire Serial 2.7V ~ 3.3V 2.5V ~ 3.7V 100µA @ 3V 0°C ~ 70°C Surface Mount - - 20-SOIC
DS1677E+ Analog Devices Inc./Maxim Integrated

DS1677E+

IC RTC SYST CTRLR SER 20TSSOP

Analog Devices Inc./Maxim Integrated

3,264
RFQ
DS1677E+ Datasheet

Datasheet

- 20-TSSOP (0.173", 4.40mm Width) Tube Obsolete Not Verified Portable System Controller Alarm, Leap Year, Watchdog Timer - HH:MM:SS (12/24 hr) YY-MM-DD-dd 3-Wire Serial 4.5V ~ 5.5V 2.5V ~ 3.7V 300µA @ 5V 0°C ~ 70°C Surface Mount - - 20-TSSOP
DS17285-3+ Analog Devices Inc./Maxim Integrated

DS17285-3+

IC RTC CLK/CALENDAR PAR 24DIP

Analog Devices Inc./Maxim Integrated

2,995
RFQ
DS17285-3+ Datasheet

Datasheet

- 24-DIP (0.600", 15.24mm) Tube Obsolete Not Verified Clock/Calendar Alarm, Daylight Savings, Leap Year, NVSRAM, Square Wave Output 2KB HH:MM:SS (12/24 hr) YY-MM-DD-dd Parallel 2.7V ~ 3.7V 2.5V ~ 3.7V 2mA @ 2.7V ~ 3.7V 0°C ~ 70°C Through Hole - - 24-PDIP
DS17285-5+ Analog Devices Inc./Maxim Integrated

DS17285-5+

IC RTC CLK/CALENDAR PAR 24DIP

Analog Devices Inc./Maxim Integrated

4,183
RFQ
DS17285-5+ Datasheet

Datasheet

- 24-DIP (0.600", 15.24mm) Tube Obsolete Not Verified Clock/Calendar Alarm, Daylight Savings, Leap Year, NVSRAM, Square Wave Output 2KB HH:MM:SS (12/24 hr) YY-MM-DD-dd Parallel 4.5V ~ 5.5V 2.5V ~ 3.7V 3mA @ 4.5V ~ 5.5V 0°C ~ 70°C Through Hole - - 24-PDIP
DS1742-100+ Analog Devices Inc./Maxim Integrated

DS1742-100+

IC RTC CLK/CALENDAR PAR 24EDIP

Analog Devices Inc./Maxim Integrated

2,930
RFQ
DS1742-100+ 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
DS1742-100IND+ Analog Devices Inc./Maxim Integrated

DS1742-100IND+

IC RTC CLK/CALENDAR PAR 24EDIP

Analog Devices Inc./Maxim Integrated

1,102
RFQ
DS1742-100IND+ 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 -40°C ~ 85°C Through Hole - - 24-EDIP
DS1743-100IND+ Analog Devices Inc./Maxim Integrated

DS1743-100IND+

IC RTC CLK/CALENDAR PAR 28EDIP

Analog Devices Inc./Maxim Integrated

3,721
RFQ
DS1743-100IND+ 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 -40°C ~ 85°C Through Hole - - 28-EDIP
DS1743W-120+ Analog Devices Inc./Maxim Integrated

DS1743W-120+

IC RTC CLK/CALENDAR PAR 28EDIP

Analog Devices Inc./Maxim Integrated

2,299
RFQ
DS1743W-120+ 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 2.97V ~ 3.63V - 2mA @ 3.3V 0°C ~ 70°C Through Hole - - 28-EDIP
DS1743W-120IND+ Analog Devices Inc./Maxim Integrated

DS1743W-120IND+

IC RTC CLK/CALENDAR PAR 28EDIP

Analog Devices Inc./Maxim Integrated

3,334
RFQ
DS1743W-120IND+ 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 2.97V ~ 3.63V - 2mA @ 3.3V -40°C ~ 85°C Through Hole - - 28-EDIP
DS1743WP-150+ Analog Devices Inc./Maxim Integrated

DS1743WP-150+

IC RTC CLK/CALENDAR PAR 34PCM

Analog Devices Inc./Maxim Integrated

4,773
RFQ
DS1743WP-150+ Datasheet

Datasheet

- 34-PowerCap™ Module Tube Obsolete Not Verified Clock/Calendar Leap Year, NVSRAM, Y2K 8KB 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
DS17485-5+ Analog Devices Inc./Maxim Integrated

DS17485-5+

IC RTC CLK/CALENDAR PAR 24DIP

Analog Devices Inc./Maxim Integrated

4,864
RFQ
DS17485-5+ Datasheet

Datasheet

- 24-DIP (0.600", 15.24mm) Tube Obsolete Not Verified Clock/Calendar Alarm, Daylight Savings, Leap Year, NVSRAM, Square Wave Output 4KB HH:MM:SS (12/24 hr) YY-MM-DD-dd Parallel 4.5V ~ 5.5V 2.5V ~ 3.7V 3mA @ 4.5V ~ 5.5V 0°C ~ 70°C Through Hole - - 24-PDIP
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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.