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
DS1688S Analog Devices Inc./Maxim Integrated

DS1688S

IC RTC CLK/CALENDAR PAR 28SOIC

Analog Devices Inc./Maxim Integrated

4,441
RFQ
DS1688S Datasheet

Datasheet

- 28-SOIC (0.337", 8.56mm Width) Tube Obsolete Not Verified Clock/Calendar Alarm, Leap Year, Square Wave Output, Unique ID 114B HH:MM:SS (12/24 hr) YY-MM-DD Parallel 2.7V ~ 3.3V, 4.5V ~ 5.5V - - 0°C ~ 70°C Surface Mount - - 28-SOIC
PT7C4337ACSE Diodes Incorporated

PT7C4337ACSE

IC RTC CLK/CALENDAR I2C 16SOIC

Diodes Incorporated

120
RFQ
PT7C4337ACSE Datasheet

Datasheet

- 16-SOIC (0.295", 7.50mm Width) Tube Active Not Verified Clock/Calendar Alarm, Leap Year, Square Wave Output - HH:MM:SS (12/24 hr) YY-MM-DD-dd I2C, 2-Wire Serial 1.8V ~ 5.5V - 0.8µA @ 1.3V ~ 1.8V -40°C ~ 85°C Surface Mount - - 16-SOIC
DS17485-5 Analog Devices Inc./Maxim Integrated

DS17485-5

IC RTC CLK/CALENDAR PAR 24DIP

Analog Devices Inc./Maxim Integrated

2,534
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
DS1284+ Analog Devices Inc./Maxim Integrated

DS1284+

IC RTC CLK/CALENDAR PAR 28DIP

Analog Devices Inc./Maxim Integrated

2,350
RFQ
DS1284+ Datasheet

Datasheet

- 28-DIP (0.600", 15.24mm) Tube Obsolete Not Verified Clock/Calendar Alarm, Leap Year, Square Wave Output, SRAM, Watchdog Timer 50B HH:MM:SS:hh (12/24 hr) YY-MM-DD-dd Parallel 4.5V ~ 5.5V 2.4V ~ 3.5V 7mA @ 5V 0°C ~ 70°C Through Hole - - 28-PDIP
DS1315N-33 Analog Devices Inc./Maxim Integrated

DS1315N-33

IC RTC PHANTOM CHIP PAR 16DIP

Analog Devices Inc./Maxim Integrated

1,467
RFQ
DS1315N-33 Datasheet

Datasheet

- 16-DIP (0.300", 7.62mm) Tube Obsolete Not Verified Phantom Time Chip Leap Year - HH:MM:SS:hh (12/24 hr) YY-MM-DD-dd Parallel 3V ~ 3.6V 2.5V ~ 3.7V 1.1mA @ 3.3V -40°C ~ 85°C Through Hole - - 16-PDIP
DS17485E-3+ Analog Devices Inc./Maxim Integrated

DS17485E-3+

IC RTC CLK/CALENDAR PAR 28TSOP

Analog Devices Inc./Maxim Integrated

3,148
RFQ
DS17485E-3+ Datasheet

Datasheet

- 28-TSSOP (0.465", 11.80mm Width) Tray 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 2.7V ~ 3.7V 2.5V ~ 3.7V 2mA @ 2.7V ~ 3.7V 0°C ~ 70°C Surface Mount - - 28-TSOP
DS1500YE+ Analog Devices Inc./Maxim Integrated

DS1500YE+

IC RTC CLK/CALENDAR PAR 32TSOP

Analog Devices Inc./Maxim Integrated

3,691
RFQ
DS1500YE+ Datasheet

Datasheet

- 32-LFSOP (0.724", 18.40mm Width) Tray 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 - - 32-TSOP
LV8572AN National Semiconductor

LV8572AN

REAL TIME CLOCK, 0 TIMER(S)

National Semiconductor

1,065
RFQ
LV8572AN Datasheet

Datasheet

- 24-DIP (0.300", 7.62mm) Bulk Active Not Verified Clock/Calendar Alarm 44B HH:MM:SS:hh (12/24 hr) YY-MM-DD-dd Parallel 3V ~ 3.6V 2.2V ~ 3.2V 3mA @ 3V ~ 3.6V -40°C ~ 85°C (TA) Through Hole - - 24-DIP
DS17885E-5 Analog Devices Inc./Maxim Integrated

DS17885E-5

IC RTC CLK/CALENDAR PAR 28TSOP

Analog Devices Inc./Maxim Integrated

4,010
RFQ
DS17885E-5 Datasheet

Datasheet

- 28-TSSOP (0.465", 11.80mm Width) Bag Obsolete 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 4.5V ~ 5.5V 2.5V ~ 3.7V 3mA @ 4.5V ~ 5.5V 0°C ~ 70°C Surface Mount - - 28-TSOP
DS17885S-5 Analog Devices Inc./Maxim Integrated

DS17885S-5

IC RTC CLK/CALENDAR PAR 24SOIC

Analog Devices Inc./Maxim Integrated

3,980
RFQ
DS17885S-5 Datasheet

Datasheet

- 24-SOIC (0.295", 7.50mm Width) Tube Obsolete 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 4.5V ~ 5.5V 2.5V ~ 3.7V 3mA @ 4.5V ~ 5.5V 0°C ~ 70°C Surface Mount - - 24-SOIC
CDP68HC68T1M Intersil

CDP68HC68T1M

IC RTC CLK/CALENDAR SPI 20SOIC

Intersil

553
RFQ
CDP68HC68T1M Datasheet

Datasheet

- 20-SOIC (0.295", 7.50mm Width) Tube Obsolete Not Verified Clock/Calendar Alarm, Leap Year, Square Wave Output, Watchdog Timer 32B HH:MM:SS (12/24 hr) YY-MM-DD-dd SPI 3V ~ 6V 2.2V ~ 6V 20µA ~ 500µA @ 5V -40°C ~ 85°C Surface Mount - - 20-SOIC
CDP68HC68T1M Harris Corporation

CDP68HC68T1M

IC RTC CLK/CALENDAR SPI 20SOIC

Harris Corporation

165
RFQ
CDP68HC68T1M Datasheet

Datasheet

- 20-SOIC (0.295", 7.50mm Width) Bulk Active Not Verified Clock/Calendar Alarm, Leap Year, Square Wave Output, Watchdog Timer 32B HH:MM:SS (12/24 hr) YY-MM-DD-dd SPI 3V ~ 6V 2.2V ~ 6V 20µA ~ 500µA @ 5V -40°C ~ 85°C Surface Mount - - 20-SOIC
BQ4802YDW Texas Instruments

BQ4802YDW

IC RTC CLK/CALENDAR PAR 28SOIC

Texas Instruments

2,869
RFQ
BQ4802YDW Datasheet

Datasheet

- 28-SOIC (0.295", 7.50mm Width) Bulk Active Not Verified Clock/Calendar Alarm, Daylight Savings, Leap Year, Supervisor, Watchdog Timer - HH:MM:SS (12/24 hr) YY-MM-DD-dd Parallel 4.5V ~ 5.5V 2.4V ~ 4V 1.5mA (Typ) @ 4.5 V ~ 5.5 V 0°C ~ 70°C Surface Mount - - 28-SOIC
DS1691 Analog Devices Inc./Maxim Integrated

DS1691

IC RTC CLK/CALENDAR PAR 28EDIP

Analog Devices Inc./Maxim Integrated

1,407
RFQ
DS1691 Datasheet

Datasheet

- 28-DIP Module (0.600", 15.24mm) Tube Obsolete Not Verified Clock/Calendar Alarm, Leap Year, Square Wave Output, Unique ID 114B HH:MM:SS (12/24 hr) YY-MM-DD Parallel 2.7V ~ 3.3V, 4.5V ~ 5.5V - - 0°C ~ 70°C Through Hole - - 28-EDIP
DS17885E-5+ Analog Devices Inc./Maxim Integrated

DS17885E-5+

IC RTC CLK/CALENDAR PAR 28TSOP

Analog Devices Inc./Maxim Integrated

1,427
RFQ
DS17885E-5+ Datasheet

Datasheet

- 28-TSSOP (0.465", 11.80mm Width) Bulk Obsolete 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 4.5V ~ 5.5V 2.5V ~ 3.7V 3mA @ 4.5V ~ 5.5V 0°C ~ 70°C Surface Mount - - 28-TSOP
DS1743WP-150 Analog Devices Inc./Maxim Integrated

DS1743WP-150

IC RTC CLK/CALENDAR PAR 34PCM

Analog Devices Inc./Maxim Integrated

1,917
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
CDP68HC68T1E Intersil

CDP68HC68T1E

IC RTC CLK/CALENDAR SPI 16DIP

Intersil

10,296
RFQ
CDP68HC68T1E Datasheet

Datasheet

- 16-DIP (0.300", 7.62mm) Tube Obsolete Not Verified Clock/Calendar Alarm, Leap Year, Square Wave Output, Watchdog Timer 32B HH:MM:SS (12/24 hr) YY-MM-DD-dd SPI 3V ~ 6V 2.2V ~ 6V 20µA ~ 500µA @ 5V -40°C ~ 85°C Through Hole - - 16-PDIP
DS12R887-5 Analog Devices Inc./Maxim Integrated

DS12R887-5

IC RTC CLK/CALENDAR PAR 48BGA

Analog Devices Inc./Maxim Integrated

4,302
RFQ

-

- 48-BBGA Tray Obsolete Not Verified Clock/Calendar Alarm, Leap Year, NVSRAM, Square Wave Output, Trickle-Charger 114B HH:MM:SS (12/24 hr) YY-MM-DD-dd Parallel 4.5V ~ 5.5V 2V ~ 3.05V 2mA @ 4.5V ~ 5.5V -40°C ~ 85°C Surface Mount - - 48-PBGA (11.8x15.3)
DS1315N-33+ Analog Devices Inc./Maxim Integrated

DS1315N-33+

IC RTC PHANTOM PAR 16-DIP

Analog Devices Inc./Maxim Integrated

172
RFQ
DS1315N-33+ Datasheet

Datasheet

* - Bulk Obsolete Not Verified - - - - - - - - - - - - - -
LV8571AN National Semiconductor

LV8571AN

RTC, VOLATILE, 2 TIMER(S)

National Semiconductor

5,515
RFQ
LV8571AN Datasheet

Datasheet

LV8571A 24-DIP (0.300", 7.62mm) Bulk Active Not Verified Clock/Calendar Alarm, Daylight Savings, Leap Year, RAM 44B HH:MM:SS (12/24 hr) YY-MM-DD - 3V ~ 3.6V 2.2V ~ 3.2V 220µA @ 3V ~ 3.6V -40°C ~ 85°C (TA) Through Hole - - 24-DIP
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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.