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
DS1337U+T&R Analog Devices Inc./Maxim Integrated

DS1337U+T&R

IC RTC CLOCK/CALENDAR I2C 8UMAX

Analog Devices Inc./Maxim Integrated

5,464
RFQ
DS1337U+T&R Datasheet

Datasheet

- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Tape & Reel (TR) 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 - 0.6µA @ 1.3V ~ 1.8V -40°C ~ 85°C Surface Mount - - 8-uMAX/uSOP
DS1341U+T&R Analog Devices Inc./Maxim Integrated

DS1341U+T&R

IC RTC CLOCK/CALENDAR I2C 8UMAX

Analog Devices Inc./Maxim Integrated

2,438
RFQ
DS1341U+T&R Datasheet

Datasheet

- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Tape & Reel (TR) 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 - 0.5µA ~ 0.6µA @ 3V ~ 5V -40°C ~ 85°C Surface Mount - - 8-uMAX/uSOP
DS2417P+T&R Analog Devices Inc./Maxim Integrated

DS2417P+T&R

IC RTC BINARY CNTR 1-WIRE 6TSOC

Analog Devices Inc./Maxim Integrated

10,310
RFQ
DS2417P+T&R Datasheet

Datasheet

- 6-SMD, J-Lead Tape & Reel (TR) Active Not Verified Binary Counter Unique ID - Binary Binary 1-Wire® Serial 2.5V ~ 5.5V - 0.45µA @ 2.5V ~ 5.5V -40°C ~ 85°C Surface Mount - - 6-TSOC
M41T83RMY6F STMicroelectronics

M41T83RMY6F

IC RTC CLK/CALENDAR I2C 18SOX

STMicroelectronics

9,375
RFQ
M41T83RMY6F Datasheet

Datasheet

- 18-SOX, 18-SOIC with Crystal (7.5mm Width) Tape & Reel (TR) Active Not Verified Clock/Calendar Alarm, Leap Year, Square Wave Output, SRAM, Watchdog Timer 7B HH:MM:SS:hh (24 hr) YY-MM-DD-dd I2C, 2-Wire Serial 2.7V ~ 5.5V 2V ~ 5.5V 10µA @ 5.5V -40°C ~ 85°C Surface Mount - - 18-SOX
ISL12026IBZ-T Renesas Electronics Corporation

ISL12026IBZ-T

IC RTC CLK/CALENDAR I2C 8SOIC

Renesas Electronics Corporation

4,713
RFQ
ISL12026IBZ-T Datasheet

Datasheet

- 8-SOIC (0.154", 3.90mm 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-SOIC
ISL12026IBZ Renesas Electronics Corporation

ISL12026IBZ

IC RTC CLK/CALENDAR I2C 8SOIC

Renesas Electronics Corporation

3,970
RFQ
ISL12026IBZ Datasheet

Datasheet

- 8-SOIC (0.154", 3.90mm Width) Tube 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-SOIC
PCF2129AT/2,518 NXP USA Inc.

PCF2129AT/2,518

IC RTC CLOCK/CALENDAR I2C 20SO

NXP USA Inc.

770
RFQ
PCF2129AT/2,518 Datasheet

Datasheet

- 20-SOIC (0.295", 7.50mm Width) Tape & Reel (TR) Active Not Verified Clock/Calendar Alarm, Leap Year, Square Wave Output, TCXO/Crystal, Watchdog Timer - HH:MM:SS (12/24 hr) YY-MM-DD-dd I2C, 2-Wire Serial 1.8V ~ 4.2V 1.8V ~ 4.2V 1.5µA @ 3.3V -40°C ~ 85°C Surface Mount - - 20-SO
RV-3032-C7-32.768KHZ-2.5PPM-TA-QC Micro Crystal AG

RV-3032-C7-32.768KHZ-2.5PPM-TA-QC

IC RTC TEMPERAT CLK/CAL I2C 8SON

Micro Crystal AG

10,158
RFQ
RV-3032-C7-32.768KHZ-2.5PPM-TA-QC Datasheet

Datasheet

C7 8-WCDFN Tape & Reel (TR) Active Not Verified Clock/Calendar Alarm, Battery Switch, Clock Output Hz-MHz, Event Input, Temperature Alarm, Timer, Trickle Charge with Charge Pump 16B, 32B HH:MM:SS:100th (24 hr) YY-MM-DD-dd I2C, 2-Wire Serial 1.3V ~ 5.5V - 210nA @ 3V -40°C ~ 105°C (TA) Surface Mount - - 8-SON (3.2x1.5)
DS1337S+T&R Analog Devices Inc./Maxim Integrated

DS1337S+T&R

IC RTC CLK/CALENDAR I2C 8SOIC

Analog Devices Inc./Maxim Integrated

7,704
RFQ
DS1337S+T&R Datasheet

Datasheet

- 8-SOIC (0.154", 3.90mm Width) Tape & Reel (TR) 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 - 0.6µA @ 1.3V ~ 1.8V -40°C ~ 85°C Surface Mount - - 8-SOIC
RV-3149-C3-32.768KHZ-OPTION-B-TB-QA Micro Crystal AG

RV-3149-C3-32.768KHZ-OPTION-B-TB-QA

IC RTC CLK/CALENDAR SPI 10SON

Micro Crystal AG

17,872
RFQ
RV-3149-C3-32.768KHZ-OPTION-B-TB-QA Datasheet

Datasheet

C3 10-VCDFN Tape & Reel (TR) Active Not Verified Clock/Calendar Alarm, EEPROM, Leap Year, Programmable Clock Output, RAM, Temperature, Timer, Trickle Charger 2B, 8B HH:MM:SS (12/24 hr) YY-MM-DD-dd SPI, 4-Wire Serial 1.3V ~ 5.5V - 1µA @ 3V -40°C ~ 125°C (TA) Surface Mount Automotive AEC-Q200 10-SON (3.7x2.5)
RV-3032-C7-32.768KHZ-2.5PPM-TA-QA Micro Crystal AG

RV-3032-C7-32.768KHZ-2.5PPM-TA-QA

IC RTC TEMPERAT CLK/CAL I2C 8SON

Micro Crystal AG

6,083
RFQ
RV-3032-C7-32.768KHZ-2.5PPM-TA-QA Datasheet

Datasheet

C7 8-WCDFN Tape & Reel (TR) Active Not Verified Clock/Calendar Alarm, Battery Switch, Clock Output Hz-MHz, Event Input, Temperature Alarm, Timer, Trickle Charge with Charge Pump 16B, 32B HH:MM:SS:100th (24 hr) YY-MM-DD-dd I2C, 2-Wire Serial 1.3V ~ 5.5V - 210nA @ 3V -40°C ~ 105°C (TA) Surface Mount Automotive AEC-Q200 8-SON (3.2x1.5)
AB-RTCMC-32.768KHZ-AIGZ-S7-T Abracon LLC

AB-RTCMC-32.768KHZ-AIGZ-S7-T

IC RTC CLK/CALENDAR I2C 8CLCC

Abracon LLC

1,615
RFQ
AB-RTCMC-32.768KHZ-AIGZ-S7-T Datasheet

Datasheet

- 8-WCDFN Tape & Reel (TR) Active Not Verified Clock/Calendar Alarm, Leap Year, Watchdog Timer - HH:MM:SS:hh (24 hr) YY-MM-DD-dd I2C, 2-Wire Serial 1V ~ 4.4V - 0.4µA ~ 0.95µA @ 1V ~ 4.4V -40°C ~ 85°C Surface Mount - - 8-CLCC (3.2x1.5)
RV-8564-C2-32.768KHZ-20PPM-TA-QC Micro Crystal AG

RV-8564-C2-32.768KHZ-20PPM-TA-QC

IC RTC CLK/CALENDAR I2C 10SON

Micro Crystal AG

2,282
RFQ
RV-8564-C2-32.768KHZ-20PPM-TA-QC Datasheet

Datasheet

C2 10-TDFN Exposed Pad Tape & Reel (TR) Active Not Verified Clock/Calendar Alarm, Leap Year, Programmable Clock Output, Timer - HH:MM:SS (24 hr) YY-MM-DD-dd I2C, 2-Wire Serial 1V ~ 5.5V - 0.35µA @ 3V -40°C ~ 85°C (TA) Surface Mount - - 10-SON (5x3.2)
DS1337U+ Analog Devices Inc./Maxim Integrated

DS1337U+

IC RTC CLOCK/CALENDAR I2C 8UMAX

Analog Devices Inc./Maxim Integrated

495
RFQ
DS1337U+ Datasheet

Datasheet

- 8-TSSOP, 8-MSOP (0.118", 3.00mm 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 - 0.6µA @ 1.3V ~ 1.8V -40°C ~ 85°C Surface Mount - - 8-uMAX/uSOP
DS1307Z+T&R Analog Devices Inc./Maxim Integrated

DS1307Z+T&R

IC RTC CLK/CALENDAR I2C 8SOIC

Analog Devices Inc./Maxim Integrated

9,812
RFQ
DS1307Z+T&R Datasheet

Datasheet

- 8-SOIC (0.154", 3.90mm Width) Tape & Reel (TR) Active Not Verified Clock/Calendar Leap Year, NVSRAM, Square Wave Output 56B HH:MM:SS (12/24 hr) YY-MM-DD-dd I2C, 2-Wire Serial 4.5V ~ 5.5V 2V ~ 3.5V 200µA @ 5V 0°C ~ 70°C Surface Mount - - 8-SOIC
PCF2129T/2,518 NXP USA Inc.

PCF2129T/2,518

IC RTC CLOCK/CALENDAR I2C 16SO

NXP USA Inc.

3,571
RFQ
PCF2129T/2,518 Datasheet

Datasheet

- 16-SOIC (0.295", 7.50mm Width) Tape & Reel (TR) Active Not Verified Clock/Calendar Alarm, Leap Year, Square Wave Output, TCXO/Crystal, Watchdog Timer - HH:MM:SS (12/24 hr) YY-MM-DD-dd I2C, 2-Wire Serial 1.8V ~ 4.2V 1.8V ~ 4.2V 1.5µA @ 3.3V -40°C ~ 85°C Surface Mount - - 16-SO
DS1371U+T&R Analog Devices Inc./Maxim Integrated

DS1371U+T&R

IC RTC BINARY COUNTER I2C 8UMAX

Analog Devices Inc./Maxim Integrated

8,356
RFQ
DS1371U+T&R Datasheet

Datasheet

- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Tape & Reel (TR) Active Not Verified Binary Counter Alarm, Square Wave Output, Watchdog Timer - Binary Binary I2C, 2-Wire Serial 1.7V ~ 5.5V - 1.3µA @ 1.7V ~ 5.5V -40°C ~ 85°C Surface Mount - - 8-uMAX/uSOP
DS1672S-33+T&R Analog Devices Inc./Maxim Integrated

DS1672S-33+T&R

IC RTC BINARY COUNTER I2C 8SOIC

Analog Devices Inc./Maxim Integrated

3,823
RFQ
DS1672S-33+T&R Datasheet

Datasheet

- 8-SOIC (0.154", 3.90mm Width) Tape & Reel (TR) Active 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 Surface Mount - - 8-SOIC
DS1302Z+T&R Analog Devices Inc./Maxim Integrated

DS1302Z+T&R

IC RTC CLK/CALENDAR SER 8SOIC

Analog Devices Inc./Maxim Integrated

1,412
RFQ
DS1302Z+T&R Datasheet

Datasheet

- 8-SOIC (0.154", 3.90mm Width) Tape & Reel (TR) Active Not Verified Clock/Calendar Leap Year, NVSRAM, Trickle-Charger 31B HH:MM:SS (12/24 hr) YY-MM-DD-dd 3-Wire Serial 2V ~ 5.5V 2V ~ 5.5V 0.3µA ~ 1µA @ 2V ~ 5V 0°C ~ 70°C Surface Mount - - 8-SOIC
RV-3129-C3-32.768KHZ-OPTION-A-TB-QA Micro Crystal AG

RV-3129-C3-32.768KHZ-OPTION-A-TB-QA

IC RTC CLK/CALENDAR I2C 10SON

Micro Crystal AG

7,761
RFQ
RV-3129-C3-32.768KHZ-OPTION-A-TB-QA Datasheet

Datasheet

C3 10-VCDFN Tape & Reel (TR) Active Not Verified Clock/Calendar Alarm, EEPROM, Leap Year, Programmable Clock Output, RAM, Temperature, Timer, Trickle Charger 2B, 8B HH:MM:SS (12/24 hr) YY-MM-DD-dd I2C, 2-Wire Serial 1.3V ~ 5.5V - 1µA @ 3V -40°C ~ 125°C (TA) Surface Mount Automotive AEC-Q200 10-SON (3.7x2.5)
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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.