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
M41T11MH6F STMicroelectronics

M41T11MH6F

IC RTC CLK/CALENDAR I2C 28SOH

STMicroelectronics

4,125
RFQ
M41T11MH6F Datasheet

Datasheet

- 28-SOP (0.350", 8.89mm Width) with SNAPHAT Sockets Tape & Reel (TR) Active Not Verified Clock/Calendar Leap Year, NVSRAM 56B HH:MM:SS YY-MM-DD-dd I2C, 2-Wire Serial 2V ~ 5.5V 2.5V ~ 3.5V 70µA @ 2V ~ 5.5V -40°C ~ 85°C Surface Mount - - 28-SOH
RV-3149-C3-32.768KHZ-OPTION-A-TB-QA Micro Crystal AG

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

IC RTC CLK/CALENDAR SPI 10SON

Micro Crystal AG

6,100
RFQ
RV-3149-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 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)
DS1308U-18+T Analog Devices Inc./Maxim Integrated

DS1308U-18+T

IC RTC CLOCK/CALENDAR I2C 8UMAX

Analog Devices Inc./Maxim Integrated

3,751
RFQ
DS1308U-18+T Datasheet

Datasheet

- 8-TSSOP, 8-MSOP (0.118", 3.00mm 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 1.71V ~ 5.5V 1.3V ~ 5.5V 100µA @ 200µA @ 1.89V ~ 5.5V -40°C ~ 85°C Surface Mount - - 8-uMAX/uSOP
DS1307ZN+T&R Analog Devices Inc./Maxim Integrated

DS1307ZN+T&R

IC RTC CLK/CALENDAR I2C 8SOIC

Analog Devices Inc./Maxim Integrated

6,985
RFQ
DS1307ZN+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 -40°C ~ 85°C Surface Mount - - 8-SOIC
DS1302ZN+T&R Analog Devices Inc./Maxim Integrated

DS1302ZN+T&R

IC RTC CLK/CALENDAR SER 8SOIC

Analog Devices Inc./Maxim Integrated

6,285
RFQ
DS1302ZN+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 -40°C ~ 85°C Surface Mount - - 8-SOIC
ISL12022IBZ Renesas Electronics Corporation

ISL12022IBZ

IC RTC CLK/CALENDAR I2C 8SOIC

Renesas Electronics Corporation

5,814
RFQ
ISL12022IBZ Datasheet

Datasheet

- 8-SOIC (0.154", 3.90mm Width) Tube Active 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 - - 8-SOIC
DS1339AU+T Analog Devices Inc./Maxim Integrated

DS1339AU+T

IC RTC CLOCK/CALENDAR I2C 8UMAX

Analog Devices Inc./Maxim Integrated

11,596
RFQ
DS1339AU+T 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, Trickle-Charger - HH:MM:SS (12/24 hr) YY-MM-DD-dd I2C, 2-Wire Serial 1.71V ~ 5.5V 1.3V ~ 3.7V 200µA @ 1.71V ~ 5.5V -40°C ~ 85°C Surface Mount - - 8-uMAX/uSOP
DS1390U-33+T&R Analog Devices Inc./Maxim Integrated

DS1390U-33+T&R

IC RTC CLK/CALENDAR SPI 10UMAX

Analog Devices Inc./Maxim Integrated

10,917
RFQ
DS1390U-33+T&R Datasheet

Datasheet

- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) Tape & Reel (TR) Active Not Verified Clock/Calendar Alarm, Leap Year, Square Wave Output, Trickle-Charger - HH:MM:SS:hh (12/24 hr) YY-MM-DD-dd SPI 2.97V ~ 5.5V 1.3V ~ 5.5V 175µA @ 2.97V ~ 5.5V -40°C ~ 85°C Surface Mount - - 10-uMAX/uSOP
DS1338Z-33+T&R Analog Devices Inc./Maxim Integrated

DS1338Z-33+T&R

IC RTC CLK/CALENDAR I2C 8SOIC

Analog Devices Inc./Maxim Integrated

3,028
RFQ
DS1338Z-33+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 3V ~ 5.5V 1.3V ~ 3.7V 125µA ~ 200µA @ 3.63V ~ 5.5V -40°C ~ 85°C Surface Mount - - 8-SOIC
DS1302SN+T&R Analog Devices Inc./Maxim Integrated

DS1302SN+T&R

IC RTC CLK/CALENDAR SER 8SOIC

Analog Devices Inc./Maxim Integrated

2,528
RFQ
DS1302SN+T&R Datasheet

Datasheet

- 8-SOIC (0.209", 5.30mm 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 -40°C ~ 85°C Surface Mount - - 8-SOIC
MAX31343EKA+T Analog Devices Inc./Maxim Integrated

MAX31343EKA+T

IC RTC CLK/CALENDAR I2C 8WLP

Analog Devices Inc./Maxim Integrated

2,542
RFQ
MAX31343EKA+T Datasheet

Datasheet

- 8-VFBGA, WLBGA Tape & Reel (TR) Active Not Verified Clock/Calendar Alarm, Leap Year, RAM, Square Wave Output, SRAM, Trickle Charger 64B HH:MM:SS (24 hr) YY-MM-DD-dd I2C 1.6V ~ 5.5V 1.6V ~ 5.5V 1.2µA ~ 2µA @ 1.6V ~ 5.5V -40°C ~ 85°C Surface Mount - - 8-WLP (2.07x2.27)
DS1340U-33+T&R Analog Devices Inc./Maxim Integrated

DS1340U-33+T&R

IC RTC CLOCK/CALENDAR I2C 8UMAX

Analog Devices Inc./Maxim Integrated

13,008
RFQ
DS1340U-33+T&R Datasheet

Datasheet

- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Tape & Reel (TR) Active Not Verified Clock/Calendar Leap Year, Trickle-Charger - HH:MM:SS (24 hr) YY-MM-DD-dd I2C, 2-Wire Serial 2.97V ~ 5.5V 1.3V ~ 5.5V 150µA @ 5.5V -40°C ~ 85°C Surface Mount - - 8-uMAX/uSOP
M41T94MH6F STMicroelectronics

M41T94MH6F

IC RTC CLK/CALENDAR SPI 28SOH

STMicroelectronics

8,289
RFQ
M41T94MH6F Datasheet

Datasheet

- 28-SOP (0.350", 8.89mm Width) with SNAPHAT Sockets Tape & Reel (TR) Active Not Verified Clock/Calendar Alarm, Leap Year, NVRAM, Square Wave Output, Watchdog Timer 44B HH:MM:SS:hh (24 hr) YY-MM-DD-dd SPI 2.7V ~ 5.5V 2.5V ~ 3.5V 1.4mA @ 2.7V ~ 5.5V -40°C ~ 85°C Surface Mount - - 28-SOH
DS1307Z+ Analog Devices Inc./Maxim Integrated

DS1307Z+

IC RTC CLK/CALENDAR I2C 8SOIC

Analog Devices Inc./Maxim Integrated

3,101
RFQ
DS1307Z+ Datasheet

Datasheet

- 8-SOIC (0.154", 3.90mm Width) Tube 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
DS1391U-33+T&R Analog Devices Inc./Maxim Integrated

DS1391U-33+T&R

IC RTC CLK/CALENDAR SPI 10UMAX

Analog Devices Inc./Maxim Integrated

9,866
RFQ
DS1391U-33+T&R Datasheet

Datasheet

- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) Tape & Reel (TR) Active Not Verified Clock/Calendar Alarm, Leap Year, Square Wave Output, Trickle-Charger - HH:MM:SS:hh (12/24 hr) YY-MM-DD-dd SPI 2.97V ~ 5.5V 1.3V ~ 5.5V 175µA @ 2.97V ~ 5.5V -40°C ~ 85°C Surface Mount - - 10-uMAX/uSOP
DS1374U-33+T&R Analog Devices Inc./Maxim Integrated

DS1374U-33+T&R

IC RTC BINARY COUNTER I2C 10UMAX

Analog Devices Inc./Maxim Integrated

5,592
RFQ
DS1374U-33+T&R Datasheet

Datasheet

- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) Tape & Reel (TR) Active Not Verified Binary Counter Alarm, Square Wave Output, Trickle-Charger, Watchdog Timer - Binary Binary I2C, 2-Wire Serial 2.97V ~ 5.5V 1.3V ~ 5.5V 175µA @ 2.97V ~ 5.5V -40°C ~ 85°C Surface Mount - - 10-uMAX/uSOP
DS1390U-3+T&R Analog Devices Inc./Maxim Integrated

DS1390U-3+T&R

IC RTC CLK/CALENDAR SPI 10UMAX

Analog Devices Inc./Maxim Integrated

5,306
RFQ
DS1390U-3+T&R Datasheet

Datasheet

- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) Tape & Reel (TR) Active Not Verified Clock/Calendar Alarm, Leap Year, Square Wave Output, Trickle-Charger - HH:MM:SS:hh (12/24 hr) YY-MM-DD-dd SPI 2.7V ~ 3.3V 1.3V ~ 3.7V 125µA @ 2.7V ~ 3.3V -40°C ~ 85°C Surface Mount - - 10-uMAX/uSOP
DS1340Z-33+T&R Analog Devices Inc./Maxim Integrated

DS1340Z-33+T&R

IC RTC CLK/CALENDAR I2C 8SOIC

Analog Devices Inc./Maxim Integrated

4,549
RFQ
DS1340Z-33+T&R Datasheet

Datasheet

- 8-SOIC (0.154", 3.90mm Width) Tape & Reel (TR) Active Not Verified Clock/Calendar Leap Year, Trickle-Charger - HH:MM:SS (24 hr) YY-MM-DD-dd I2C, 2-Wire Serial 2.97V ~ 5.5V 1.3V ~ 5.5V 150µA @ 5.5V -40°C ~ 85°C Surface Mount - - 8-SOIC
DS1338U-33+T&R Analog Devices Inc./Maxim Integrated

DS1338U-33+T&R

IC RTC CLOCK/CALENDAR I2C 8UMAX

Analog Devices Inc./Maxim Integrated

3,584
RFQ
DS1338U-33+T&R Datasheet

Datasheet

- 8-TSSOP, 8-MSOP (0.118", 3.00mm 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 3V ~ 5.5V 1.3V ~ 3.7V 125µA ~ 200µA @ 3.63V ~ 5.5V -40°C ~ 85°C Surface Mount - - 8-uMAX/uSOP
AB-RTCMC-32.768KHZ-IBO5-S3-T Abracon LLC

AB-RTCMC-32.768KHZ-IBO5-S3-T

IC RTC CLK/CALENDAR I2C MODULE

Abracon LLC

11,442
RFQ
AB-RTCMC-32.768KHZ-IBO5-S3-T Datasheet

Datasheet

- Module Tape & Reel (TR) Not For New Designs Not Verified Clock/Calendar Alarm, Square Wave Output, SRAM, Trickle Charge, Watchdog Timer 512B HH:MM:SS:hh (24 hr) YY-MM-DD-dd I2C, 2-Wire Serial 1.5V ~ 3.6V 1.4V ~ 3.6V 0.29µA ~ 0.33µA @ 1.8V ~ 3V -40°C ~ 85°C Surface Mount - - Module
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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.