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
ISL12023IVZ Intersil

ISL12023IVZ

IC RTC CLK/CALENDAR I2C 14TSSOP

Intersil

3,716
RFQ
ISL12023IVZ Datasheet

Datasheet

- 14-TSSOP (0.173", 4.40mm Width) Tube Obsolete Not Verified Clock/Calendar Alarm, Daylight Savings, Leap Year, SRAM 128B HH:MM:SS (12/24 hr) YY-MM-DD-dd I2C, 2-Wire Serial 2.7V ~ 5.5V 1.8V ~ 5.5V 14µA ~ 15µA @ 3V ~ 5V -40°C ~ 85°C Surface Mount - - 14-TSSOP
ISL12026IVZ-T Renesas Electronics Corporation

ISL12026IVZ-T

IC RTC CLK/CALENDAR I2C 8TSSOP

Renesas Electronics Corporation

2,357
RFQ
ISL12026IVZ-T Datasheet

Datasheet

- 8-TSSOP (0.173", 4.40mm Width) Tape & Reel (TR) Active Not Verified Clock/Calendar Alarm, Leap Year - HH:MM:SS (12/24 hr) YY-MM-DD-dd I2C, 2-Wire Serial 2.7V ~ 5.5V 1.8V ~ 5.5V 10µA ~ 20µA @ 2.7V ~ 5.5V -40°C ~ 85°C Surface Mount - - 8-TSSOP
DS1685E-3 Analog Devices Inc./Maxim Integrated

DS1685E-3

IC RTC CLK/CALENDAR PAR 24TSSOP

Analog Devices Inc./Maxim Integrated

2,534
RFQ
DS1685E-3 Datasheet

Datasheet

- 24-TSSOP (0.173", 4.40mm Width) Tube Obsolete Not Verified Clock/Calendar Alarm, NVSRAM, Square Wave Output, Y2K 242B HH:MM:SS (12/24 hr) YY-MM-DD-dd Parallel 2.7V ~ 3.7V 2.5V ~ 3.7V 2mA @ 3V 0°C ~ 70°C Surface Mount - - 24-TSSOP
ISL1208IB8Z-T7A Renesas Electronics Corporation

ISL1208IB8Z-T7A

IC RTC CLK/CALENDAR I2C 8SOIC

Renesas Electronics Corporation

115
RFQ
ISL1208IB8Z-T7A Datasheet

Datasheet

- 8-SOIC (0.154", 3.90mm Width) Tape & Reel (TR) Active Not Verified Clock/Calendar Alarm, Leap Year, SRAM 2B HH:MM:SS (12/24 hr) YY-MM-DD-dd I2C, 2-Wire Serial 2.7V ~ 5.5V 1.8V ~ 5.5V 4µA ~ 6µA @ 3V ~ 5V -40°C ~ 85°C Surface Mount - - 8-SOIC
BQ4845YS-A4N Texas Instruments

BQ4845YS-A4N

IC RTC CLK/CALENDAR PAR 28SOIC

Texas Instruments

3,421
RFQ
BQ4845YS-A4N Datasheet

Datasheet

- 28-SOIC (0.295", 7.50mm Width) Tube Obsolete 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 2.3V ~ 4V 1.5mA (Typ) @ 4.5 V ~ 5.5 V -40°C ~ 85°C Surface Mount - - 28-SOIC
DS1344D-33+ Analog Devices Inc./Maxim Integrated

DS1344D-33+

IC RTC CLK/CALENDAR SPI 14TDFN

Analog Devices Inc./Maxim Integrated

4,505
RFQ
DS1344D-33+ Datasheet

Datasheet

- 14-WFDFN Exposed Pad Bulk Active Not Verified Clock/Calendar Alarm, Leap Year, NVRAM, Square Wave Output, Trickle Charger 96B HH:MM:SS (12/24 hr) YY-MM-DD-dd SPI 3V ~ 5.5V 1.3V ~ 5.5V 120µA ~ 160µA @ 3.63V ~ 5.5V -40°C ~ 85°C Surface Mount - - 14-TDFN (3x3)
BQ4285EP Benchmarq

BQ4285EP

IC RTC CLK/CALENDAR PAR 24DIP

Benchmarq

6,270
RFQ
BQ4285EP Datasheet

Datasheet

- 24-DIP (0.600", 15.24mm) Tube Obsolete Not Verified Clock/Calendar Alarm, Daylight Savings, Leap Year, NVSRAM, Square Wave Output 114B HH:MM:SS (12/24 hr) YY-MM-DD-dd Parallel 4.5V ~ 5.5V 2.5V ~ 4V 300µA @ 5V 0°C ~ 70°C Through Hole - - 24-PDIP
BQ4285EP Texas Instruments

BQ4285EP

IC RTC CLK/CALENDAR PAR 24DIP

Texas Instruments

3,264
RFQ
BQ4285EP Datasheet

Datasheet

- 24-DIP (0.600", 15.24mm) Tube Obsolete Not Verified Clock/Calendar Alarm, Daylight Savings, Leap Year, NVSRAM, Square Wave Output 114B HH:MM:SS (12/24 hr) YY-MM-DD-dd Parallel 4.5V ~ 5.5V 2.5V ~ 4V 300µA @ 5V 0°C ~ 70°C Through Hole - - 24-PDIP
BQ4802LYPW Texas Instruments

BQ4802LYPW

IC RTC CLK/CALENDAR PAR 28TSSOP

Texas Instruments

1,802
RFQ
BQ4802LYPW Datasheet

Datasheet

- 28-TSSOP (0.173", 4.40mm 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 2.7V ~ 3.6V 2.4V ~ 4V 1.5mA (Typ) @ 2.7 V ~ 3.6 V 0°C ~ 70°C Surface Mount - - 28-TSSOP
DS1685-3+ Analog Devices Inc./Maxim Integrated

DS1685-3+

IC RTC CLK/CALENDAR PAR 24-DIP

Analog Devices Inc./Maxim Integrated

2,221
RFQ
DS1685-3+ Datasheet

Datasheet

- 24-DIP (0.600", 15.24mm) Bulk Obsolete Not Verified Clock/Calendar Alarm, NVSRAM, Square Wave Output, Y2K 242B HH:MM:SS (12/24 hr) YY-MM-DD-dd Parallel 2.7V ~ 3.7V 2.5V ~ 3.7V 2mA @ 3V 0°C ~ 70°C Through Hole - - 24-PDIP
BQ4285S-SB2 Texas Instruments

BQ4285S-SB2

IC RTC CLK/CALENDAR PAR 24SOIC

Texas Instruments

4,700
RFQ
BQ4285S-SB2 Datasheet

Datasheet

- 24-SOIC (0.295", 7.50mm Width) Bulk Obsolete Not Verified Clock/Calendar Alarm, Daylight Savings, Leap Year, NVSRAM, Square Wave Output 114B HH:MM:SS (12/24 hr) YY-MM-DD-dd Parallel 4.5V ~ 5.5V 2.5V ~ 4V - 0°C ~ 70°C Surface Mount - - 24-SOIC
DS1685QN-3 Analog Devices Inc./Maxim Integrated

DS1685QN-3

IC RTC CLK/CALENDAR PAR 28PLCC

Analog Devices Inc./Maxim Integrated

3,835
RFQ
DS1685QN-3 Datasheet

Datasheet

- 28-LCC (J-Lead) Tube Obsolete Not Verified Clock/Calendar Alarm, NVSRAM, Square Wave Output, Y2K 242B HH:MM:SS (12/24 hr) YY-MM-DD-dd Parallel 2.7V ~ 3.7V 2.5V ~ 3.7V 2mA @ 3V -40°C ~ 85°C Surface Mount - - 28-PLCC (11.51x11.51)
BQ4802LYDW Texas Instruments

BQ4802LYDW

IC RTC CLK/CALENDAR PAR 28SOIC

Texas Instruments

4,075
RFQ
BQ4802LYDW 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 2.7V ~ 3.6V 2.4V ~ 4V 1.5mA (Typ) @ 2.7 V ~ 3.6 V 0°C ~ 70°C Surface Mount - - 28-SOIC
DS1685QN-5 Analog Devices Inc./Maxim Integrated

DS1685QN-5

IC RTC CLK/CALENDAR PAR 28PLCC

Analog Devices Inc./Maxim Integrated

3,873
RFQ
DS1685QN-5 Datasheet

Datasheet

- 28-LCC (J-Lead) Tube Obsolete Not Verified Clock/Calendar Alarm, NVSRAM, Square Wave Output, Y2K 242B HH:MM:SS (12/24 hr) YY-MM-DD-dd Parallel 4.5V ~ 5.5V 2.5V ~ 3.7V 3mA @ 5V -40°C ~ 85°C Surface Mount - - 28-PLCC (11.51x11.51)
DS12885Q/T&R Dallas Semiconductor

DS12885Q/T&R

IC RTC CLK/CALENDAR PAR 28PLCC

Dallas Semiconductor

2,500
RFQ
DS12885Q/T&R Datasheet

Datasheet

- 28-LCC (J-Lead) Bulk Obsolete Not Verified Clock/Calendar Alarm, Daylight Savings, Leap Year, NVSRAM, Square Wave Output 114B HH:MM:SS (12/24 hr) YY-MM-DD-dd Parallel 4.5V ~ 5.5V 2.5V ~ 4V - - Surface Mount - - 28-PLCC (11.51x11.51)
DS1685EN-5 Analog Devices Inc./Maxim Integrated

DS1685EN-5

IC RTC CLK/CALENDAR PAR 24TSSOP

Analog Devices Inc./Maxim Integrated

2,140
RFQ
DS1685EN-5 Datasheet

Datasheet

- 24-TSSOP (0.173", 4.40mm Width) Tube Obsolete Not Verified Clock/Calendar Alarm, NVSRAM, Square Wave Output, Y2K 242B HH:MM:SS (12/24 hr) YY-MM-DD-dd Parallel 4.5V ~ 5.5V 2.5V ~ 3.7V 3mA @ 5V -40°C ~ 85°C Surface Mount - - 24-TSSOP
ISL1208IRT8Z Renesas Electronics Corporation

ISL1208IRT8Z

IC RTC CLK/CALENDAR I2C 8TDFN

Renesas Electronics Corporation

734
RFQ
ISL1208IRT8Z Datasheet

Datasheet

- 8-WDFN Exposed Pad Tube Obsolete Not Verified Clock/Calendar Alarm, Leap Year, SRAM 2B HH:MM:SS (12/24 hr) YY-MM-DD-dd I2C, 2-Wire Serial 2.7V ~ 5.5V 1.8V ~ 5.5V 4µA ~ 6µA @ 3V ~ 5V -40°C ~ 85°C Surface Mount - - 8-TDFN (3x3)
DS14285N Analog Devices Inc./Maxim Integrated

DS14285N

IC RTC CLK/CALENDAR PAR 24DIP

Analog Devices Inc./Maxim Integrated

2,083
RFQ
DS14285N Datasheet

Datasheet

- 24-DIP (0.600", 15.24mm) Tube Obsolete Not Verified Clock/Calendar Alarm, Daylight Savings, Leap Year, NVSRAM, Square Wave Output 114B HH:MM:SS (12/24 hr) YY-MM-DD-dd Parallel 4.5V ~ 5.5V 2.5V ~ 3.6V 0.5µA @ 4.5V ~ 5.5V -40°C ~ 85°C Through Hole - - 24-PDIP
DS1670E Analog Devices Inc./Maxim Integrated

DS1670E

IC RTC SYST CTRLR SER 20TSSOP

Analog Devices Inc./Maxim Integrated

2,992
RFQ
DS1670E 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 2.97V ~ 3.63V 2.5V ~ 3.7V 100µA @ 3.3V 0°C ~ 70°C Surface Mount - - 20-TSSOP
DS12885S Analog Devices Inc./Maxim Integrated

DS12885S

IC RTC CLK/CALENDAR PAR 24SOIC

Analog Devices Inc./Maxim Integrated

3,714
RFQ
DS12885S Datasheet

Datasheet

- 24-SOIC (0.295", 7.50mm Width) Tube Obsolete Not Verified Clock/Calendar Alarm, Daylight Savings, Leap Year, NVSRAM, Square Wave Output 114B HH:MM:SS (12/24 hr) YY-MM-DD-dd Parallel 4.5V ~ 5.5V 2.5V ~ 4V 15mA @ 4.5V ~ 5.5V 0°C ~ 70°C Surface Mount - - 24-SOIC
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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.