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
1339-31DCGI8 Renesas Electronics Corporation

1339-31DCGI8

IC RTC CLK/CALENDAR I2C 8SOIC

Renesas Electronics Corporation

2,545
RFQ
1339-31DCGI8 Datasheet

Datasheet

- 8-SOIC (0.154", 3.90mm 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 3.3V ~ 5.5V 1.3V ~ 3.7V 200µA @ 3.63V ~ 5.5V -40°C ~ 85°C Surface Mount - - 8-SOIC
RX-8035SA:AC0 PURE SN EPSON

RX-8035SA:AC0 PURE SN

IC RTC TIME EVENT REC I2C 14SOP

EPSON

1,475
RFQ
RX-8035SA:AC0 PURE SN Datasheet

Datasheet

RX-8035SA 14-SOIC (0.197", 5.00mm Width) Tape & Reel (TR) Active Not Verified Time Event Recorder Alarm - HH:MM:SS (12/24 hr) YY-MM-DD-dd I2C, 2-Wire Serial 2.4V ~ 5.5V 1V ~ 5.5V 2.5µA @ 3V -40°C ~ 85°C Surface Mount - - 14-SOP
DS1306E/T&R Analog Devices Inc./Maxim Integrated

DS1306E/T&R

IC RTC CLK/CALENDAR SPI 20TSSOP

Analog Devices Inc./Maxim Integrated

2,739
RFQ
DS1306E/T&R Datasheet

Datasheet

- 20-TSSOP (0.173", 4.40mm Width) Tape & Reel (TR) Obsolete Not Verified Clock/Calendar Alarm, Leap Year, NVSRAM, Square Wave Output, Trickle-Charger 96B HH:MM:SS (12/24 hr) YY-MM-DD-dd SPI 2V ~ 5.5V 2V ~ 5.5V 25.3µA ~ 81µA @ 2V ~ 5V -40°C ~ 85°C Surface Mount - - 20-TSSOP
DS1305E/T&R Analog Devices Inc./Maxim Integrated

DS1305E/T&R

IC RTC CLK/CALENDAR SPI 20TSSOP

Analog Devices Inc./Maxim Integrated

4,271
RFQ
DS1305E/T&R Datasheet

Datasheet

- 20-TSSOP (0.173", 4.40mm Width) Tape & Reel (TR) Obsolete Not Verified Clock/Calendar Alarm, Leap Year, NVSRAM, Trickle-Charger 96B HH:MM:SS (12/24 hr) YY-MM-DD-dd SPI 2V ~ 5.5V 2V ~ 5.5V 25.3µA ~ 81µA @ 2V ~ 5V 0°C ~ 70°C Surface Mount - - 20-TSSOP
RV-8564-C3-32.768KHZ-10PPM-TA-QC Micro Crystal AG

RV-8564-C3-32.768KHZ-10PPM-TA-QC

IC RTC CLK/CALENDAR I2C 10SON

Micro Crystal AG

4,141
RFQ
RV-8564-C3-32.768KHZ-10PPM-TA-QC Datasheet

Datasheet

C3 10-VCDFN 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 (3.7x2.5)
PT7C4302WEX Diodes Incorporated

PT7C4302WEX

IC RTC CLK/CALENDAR SER 8SOIC

Diodes Incorporated

4,831
RFQ
PT7C4302WEX Datasheet

Datasheet

- 8-SOIC (0.154", 3.90mm Width) Tape & Reel (TR) Obsolete Not Verified Clock/Calendar Leap Year, NVSRAM, Square Wave Output, Trickle-Charger 31B HH:MM:SS (12/24 hr) YY-MM-DD-dd 3-Wire Serial 1.2V ~ 5.5V 1.5V ~ 5.5V 25.3µA ~ 81µA @ 2V ~ 5V -40°C ~ 85°C Surface Mount - - 8-SOIC
RX-8035SA:AA0:PURE SN EPSON

RX-8035SA:AA0:PURE SN

IC RTC TIME EVENT REC I2C 14SOP

EPSON

2,890
RFQ
RX-8035SA:AA0:PURE SN Datasheet

Datasheet

RX-8035SA 14-SOIC (0.197", 5.00mm Width) Tape & Reel (TR) Obsolete Not Verified Time Event Recorder Alarm - HH:MM:SS (12/24 hr) YY-MM-DD-dd I2C, 2-Wire Serial 2.4V ~ 5.5V 1V ~ 5.5V 2.5µA @ 3V -40°C ~ 85°C Surface Mount - - 14-SOP
ISL1219IUZ-T Renesas Electronics Corporation

ISL1219IUZ-T

IC RTC EVENT REC I2C 10MSOP

Renesas Electronics Corporation

1,027
RFQ
ISL1219IUZ-T Datasheet

Datasheet

- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) Tape & Reel (TR) Active Not Verified Time Event Recorder 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 - - 10-MSOP
PT7C4307WEX Diodes Incorporated

PT7C4307WEX

IC RTC CLK/CALENDAR I2C 8SOIC

Diodes Incorporated

3,468
RFQ
PT7C4307WEX Datasheet

Datasheet

- 8-SOIC (0.154", 3.90mm Width) Tape & Reel (TR) Obsolete Not Verified Clock/Calendar Alarm, 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 1.5mA @ 4.5V ~ 5.5V -40°C ~ 85°C Surface Mount - - 8-SOIC
ISL12026AIBZ-T Renesas Electronics Corporation

ISL12026AIBZ-T

IC RTC CLK/CALENDAR I2C 8SOIC

Renesas Electronics Corporation

1,260
RFQ
ISL12026AIBZ-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
RX-8803SAUC0 PURE SN EPSON

RX-8803SAUC0 PURE SN

IC RTC CLK/CALENDAR I2C 14SOP

EPSON

2,895
RFQ
RX-8803SAUC0 PURE SN Datasheet

Datasheet

- - Tape & Reel (TR) Active - - - - - - - - - - - - - - -
RX-8803SA UB0 PURE SN EPSON

RX-8803SA UB0 PURE SN

IC RTC CLK/CALENDAR I2C 14SOP

EPSON

1,694
RFQ
RX-8803SA UB0 PURE SN Datasheet

Datasheet

- - Tape & Reel (TR) Active - - - - - - - - - - - - - - -
RX-4803SAUB0 PURE SN EPSON

RX-4803SAUB0 PURE SN

IC RTC CLK/CALENDAR SPI 12VSOJ

EPSON

2,788
RFQ
RX-4803SAUB0 PURE SN Datasheet

Datasheet

- - Tape & Reel (TR) Active - - - - - - - - - - - - - - -
RX-8025SAAA0 PURE SN EPSON

RX-8025SAAA0 PURE SN

IC RTC CLK/CALENDAR I2C 14SOP

EPSON

3,858
RFQ
RX-8025SAAA0 PURE SN Datasheet

Datasheet

RX-8025SA 14-SOIC (0.197", 5.00mm Width) Tape & Reel (TR) Active - Clock/Calendar Alarm - HH:MM:SS YY-MM-DD-dd I2C 1.7V ~ 5.5V - 1.2µA ~ 1.8µA @ 3V ~ 5V -40°C ~ 85°C Surface Mount - - 14-SOP
RX-8025SAAC0 PURE SN EPSON

RX-8025SAAC0 PURE SN

IC RTC CLK/CALENDAR I2C 14SOP

EPSON

1,927
RFQ
RX-8025SAAC0 PURE SN Datasheet

Datasheet

- - Tape & Reel (TR) Active - - - - - - - - - - - - - - -
DS1307ZN Analog Devices Inc./Maxim Integrated

DS1307ZN

IC RTC CLK/CALENDAR I2C 8SOIC

Analog Devices Inc./Maxim Integrated

1,061
RFQ
DS1307ZN Datasheet

Datasheet

- 8-SOIC (0.154", 3.90mm Width) Tube Obsolete 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
DS1302N Analog Devices Inc./Maxim Integrated

DS1302N

IC RTC CLK/CALENDAR SER 8DIP

Analog Devices Inc./Maxim Integrated

2,523
RFQ
DS1302N Datasheet

Datasheet

- 8-DIP (0.300", 7.62mm) Tube Obsolete 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 Through Hole - - 8-PDIP
DS1302SN Analog Devices Inc./Maxim Integrated

DS1302SN

IC RTC CLK/CALENDAR SER 8SOIC

Analog Devices Inc./Maxim Integrated

4,435
RFQ
DS1302SN Datasheet

Datasheet

- 8-SOIC (0.209", 5.30mm Width) Tube Obsolete 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
DS1307N Analog Devices Inc./Maxim Integrated

DS1307N

IC RTC CLOCK/CALENDAR I2C 8DIP

Analog Devices Inc./Maxim Integrated

1,604
RFQ
DS1307N Datasheet

Datasheet

- 8-DIP (0.300", 7.62mm) Tube Obsolete 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 Through Hole - - 8-PDIP
M41T60Q6F STMicroelectronics

M41T60Q6F

IC RTC CLK/CALENDAR I2C 16QFN

STMicroelectronics

1,715
RFQ

-

- 16-VFQFN Exposed Pad Tape & Reel (TR) Obsolete Not Verified Clock/Calendar Leap Year - HH:MM:SS (24 hr) YY-MM-DD-dd I2C, 2-Wire Serial 1.3V ~ 4.4V - 0.7µA ~ 0.95µA @ 3.6V ~ 4.4V -40°C ~ 85°C Surface Mount - - 16-QFN (3x3)
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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.