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
RTC-8564JE:B3:ROHS EPSON

RTC-8564JE:B3:ROHS

IC RTC CLK/CALENDAR I2C 20VSOJ

EPSON

5,504
RFQ
RTC-8564JE:B3:ROHS Datasheet

Datasheet

RTC-8564JE 20-LSSOJ (0.213", 5.40mm Width) Tape & Reel (TR) Active Not Verified Clock/Calendar Alarm, Y2K - HH:MM:SS YY-MM-DD-dd I2C, 2-Wire Serial 1.8V ~ 5.5V - 0.7µA ~ 0.8µA @ 3V ~ 5V -40°C ~ 85°C Surface Mount - - 20-VSOJ
DS3231MZ+TRL Analog Devices Inc./Maxim Integrated

DS3231MZ+TRL

IC RTC CLK/CALENDAR I2C 8SOIC

Analog Devices Inc./Maxim Integrated

2,253
RFQ
DS3231MZ+TRL 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 2.3V ~ 5.5V 2.3V ~ 5.5V 130µA ~ 200µA @ 3.63V ~ 5.5V -40°C ~ 85°C Surface Mount - - 8-SOIC
DS3232MZ+TRL Analog Devices Inc./Maxim Integrated

DS3232MZ+TRL

IC RTC CLK/CALENDAR I2C 8SOIC

Analog Devices Inc./Maxim Integrated

18,150
RFQ
DS3232MZ+TRL Datasheet

Datasheet

- 8-SOIC (0.154", 3.90mm Width) Tape & Reel (TR) Active Not Verified Clock/Calendar Alarm, Leap Year, Square Wave Output, SRAM 236B HH:MM:SS (12/24 hr) YY-MM-DD-dd I2C, 2-Wire Serial 2.3V ~ 4.5V 2.3V ~ 4.5V 175µA @ 2.3V ~ 4.5V -40°C ~ 85°C Surface Mount - - 8-SOIC
DS1339C-33# Analog Devices Inc./Maxim Integrated

DS1339C-33#

IC RTC CLK/CALENDAR I2C 16SOIC

Analog Devices Inc./Maxim Integrated

995
RFQ
DS1339C-33# Datasheet

Datasheet

- 16-SOIC (0.295", 7.50mm Width) Tube 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 2.97V ~ 5.5V 1.3V ~ 3.7V 200µA @ 5.5V -40°C ~ 85°C Surface Mount - - 16-SOIC
DS3231M+TRL Analog Devices Inc./Maxim Integrated

DS3231M+TRL

IC RTC CLK/CALENDAR I2C 16SOIC

Analog Devices Inc./Maxim Integrated

1,768
RFQ
DS3231M+TRL Datasheet

Datasheet

- 16-SOIC (0.295", 7.50mm 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 2.3V ~ 5.5V 2.3V ~ 5.5V 130µA ~ 200µA @ 3.63V ~ 5.5V -40°C ~ 85°C Surface Mount - - 16-SOIC
DS1685S-5+ Analog Devices Inc./Maxim Integrated

DS1685S-5+

IC RTC CLK/CALENDAR PAR 24SOIC

Analog Devices Inc./Maxim Integrated

521
RFQ
DS1685S-5+ Datasheet

Datasheet

- 24-SOIC (0.295", 7.50mm Width) Tube Active 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 0°C ~ 70°C Surface Mount - - 24-SOIC
DS3231S#T&R Analog Devices Inc./Maxim Integrated

DS3231S#T&R

IC RTC CLK/CALENDAR I2C 16SOIC

Analog Devices Inc./Maxim Integrated

457
RFQ
DS3231S#T&R 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 - HH:MM:SS (12/24 hr) YY-MM-DD-dd I2C, 2-Wire Serial 2.3V ~ 5.5V 2.3V ~ 5.5V 110µA ~ 170µA @ 3.63V ~ 5.5V 0°C ~ 70°C Surface Mount - - 16-SOIC
DS3234S#T&R Analog Devices Inc./Maxim Integrated

DS3234S#T&R

IC RTC CLK/CALENDAR SPI 20SOIC

Analog Devices Inc./Maxim Integrated

1,586
RFQ
DS3234S#T&R Datasheet

Datasheet

- 20-SOIC (0.295", 7.50mm Width) Tape & Reel (TR) Active Not Verified Clock/Calendar Alarm, Leap Year, Square Wave Output, SRAM, TCXO/Crystal 256B HH:MM:SS (12/24 hr) YY-MM-DD-dd SPI 2V ~ 5.5V 2V ~ 3.8V 120µA ~ 160µA @ 3.63V ~ 5.5V 0°C ~ 70°C Surface Mount - - 20-SOIC
DS3231MZ+ Analog Devices Inc./Maxim Integrated

DS3231MZ+

IC RTC CLK/CALENDAR I2C 8SOIC

Analog Devices Inc./Maxim Integrated

1,274
RFQ
DS3231MZ+ Datasheet

Datasheet

- 8-SOIC (0.154", 3.90mm 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 2.3V ~ 5.5V 2.3V ~ 5.5V 130µA ~ 200µA @ 3.63V ~ 5.5V -40°C ~ 85°C Surface Mount - - 8-SOIC
DS3232MZ+ Analog Devices Inc./Maxim Integrated

DS3232MZ+

IC RTC CLK/CALENDAR I2C 8SOIC

Analog Devices Inc./Maxim Integrated

1,329
RFQ
DS3232MZ+ Datasheet

Datasheet

- 8-SOIC (0.154", 3.90mm Width) Tube Active Not Verified Clock/Calendar Alarm, Leap Year, Square Wave Output, SRAM 236B HH:MM:SS (12/24 hr) YY-MM-DD-dd I2C, 2-Wire Serial 2.3V ~ 4.5V 2.3V ~ 4.5V 175µA @ 2.3V ~ 4.5V -40°C ~ 85°C Surface Mount - - 8-SOIC
DS3231M+ Analog Devices Inc./Maxim Integrated

DS3231M+

IC RTC CLK/CALENDAR I2C 16SOIC

Analog Devices Inc./Maxim Integrated

237
RFQ
DS3231M+ 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 2.3V ~ 5.5V 2.3V ~ 5.5V 130µA ~ 200µA @ 3.63V ~ 5.5V -40°C ~ 85°C Surface Mount - - 16-SOIC
DS3232SN#T&R Analog Devices Inc./Maxim Integrated

DS3232SN#T&R

IC RTC CLK/CALENDAR I2C 20SOIC

Analog Devices Inc./Maxim Integrated

2,762
RFQ
DS3232SN#T&R Datasheet

Datasheet

- 20-SOIC (0.295", 7.50mm Width) Tape & Reel (TR) Active Not Verified Clock/Calendar Alarm, Leap Year, Square Wave Output, SRAM, TCXO/Crystal 236B HH:MM:SS (12/24 hr) YY-MM-DD-dd I2C, 2-Wire Serial 2.3V ~ 5.5V 2.3V ~ 5.5V 120µA ~ 160µA @ 3.3V ~ 5.5V -40°C ~ 85°C Surface Mount - - 20-SOIC
DS3234SN#T&R Analog Devices Inc./Maxim Integrated

DS3234SN#T&R

IC RTC CLK/CALENDAR SPI 20SOIC

Analog Devices Inc./Maxim Integrated

2,411
RFQ
DS3234SN#T&R Datasheet

Datasheet

- 20-SOIC (0.295", 7.50mm Width) Tape & Reel (TR) Active Not Verified Clock/Calendar Alarm, Leap Year, Square Wave Output, SRAM, TCXO/Crystal 256B HH:MM:SS (12/24 hr) YY-MM-DD-dd SPI 2V ~ 5.5V 2V ~ 3.8V 120µA ~ 160µA @ 3.63V ~ 5.5V -40°C ~ 85°C Surface Mount - - 20-SOIC
RX-8564LC:B3 PURE SN EPSON

RX-8564LC:B3 PURE SN

IC RTC CLK/CALENDAR I2C 12VSOJ

EPSON

8,876
RFQ
RX-8564LC:B3 PURE SN Datasheet

Datasheet

RX-8564LC 12-TFSOJ (0.094", 2.40mm Width) Tape & Reel (TR) Active Not Verified Clock/Calendar Alarm, Leap Year - HH:MM:SS (24 hr) YY-MM-DD-dd I2C, 2-Wire Serial 1.8V ~ 5.5V - 0.65µA ~ 0.8µA @ 2V ~ 5V -40°C ~ 85°C Surface Mount - - 12-VSOJ
DS3231S# Analog Devices Inc./Maxim Integrated

DS3231S#

IC RTC CLK/CALENDAR I2C 16SOIC

Analog Devices Inc./Maxim Integrated

481
RFQ
DS3231S# Datasheet

Datasheet

- 16-SOIC (0.295", 7.50mm Width) Tube Active Not Verified Clock/Calendar Alarm, Leap Year, Square Wave Output, TCXO/Crystal - HH:MM:SS (12/24 hr) YY-MM-DD-dd I2C, 2-Wire Serial 2.3V ~ 5.5V 2.3V ~ 5.5V 110µA ~ 170µA @ 3.63V ~ 5.5V 0°C ~ 70°C Surface Mount - - 16-SOIC
DS3232SN# Analog Devices Inc./Maxim Integrated

DS3232SN#

IC RTC CLK/CALENDAR I2C 20SOIC

Analog Devices Inc./Maxim Integrated

2,555
RFQ
DS3232SN# Datasheet

Datasheet

- 20-SOIC (0.295", 7.50mm Width) Tube Active Not Verified Clock/Calendar Alarm, Leap Year, Square Wave Output, SRAM, TCXO/Crystal 236B HH:MM:SS (12/24 hr) YY-MM-DD-dd I2C, 2-Wire Serial 2.3V ~ 5.5V 2.3V ~ 5.5V 120µA ~ 160µA @ 3.3V ~ 5.5V -40°C ~ 85°C Surface Mount - - 20-SOIC
DS3234SN# Analog Devices Inc./Maxim Integrated

DS3234SN#

IC RTC CLK/CALENDAR SPI 20SOIC

Analog Devices Inc./Maxim Integrated

314
RFQ
DS3234SN# Datasheet

Datasheet

- 20-SOIC (0.295", 7.50mm Width) Tube Active Not Verified Clock/Calendar Alarm, Leap Year, Square Wave Output, SRAM, TCXO/Crystal 256B HH:MM:SS (12/24 hr) YY-MM-DD-dd SPI 2V ~ 5.5V 2V ~ 3.8V 120µA ~ 160µA @ 3.63V ~ 5.5V -40°C ~ 85°C Surface Mount - - 20-SOIC
M48T58Y-70MH1F STMicroelectronics

M48T58Y-70MH1F

IC RTC CLK/CALENDAR PAR 28SOH

STMicroelectronics

1,799
RFQ
M48T58Y-70MH1F Datasheet

Datasheet

Timekeeper® 28-SOIC (0.337", 8.56mm Width) with SNAPHAT Sockets Tape & Reel (TR) Active Not Verified Clock/Calendar Leap Year - HH:MM:SS (24 hr) YY-MM-DD-dd Parallel 4.5V ~ 5.5V - 3mA @ 4.5V ~ 5.5V 0°C ~ 70°C Surface Mount - - 28-SOH
DS3231SN# Analog Devices Inc./Maxim Integrated

DS3231SN#

IC RTC CLK/CALENDAR I2C 16SOIC

Analog Devices Inc./Maxim Integrated

3,247
RFQ
DS3231SN# Datasheet

Datasheet

- 16-SOIC (0.295", 7.50mm Width) Tube Active Not Verified Clock/Calendar Alarm, Leap Year, Square Wave Output, TCXO/Crystal - HH:MM:SS (12/24 hr) YY-MM-DD-dd I2C, 2-Wire Serial 2.3V ~ 5.5V 2.3V ~ 5.5V 110µA ~ 170µA @ 3.63V ~ 5.5V -40°C ~ 85°C Surface Mount - - 16-SOIC
DS12C887+ Analog Devices Inc./Maxim Integrated

DS12C887+

IC RTC CLK/CALENDAR PAR 24EDIP

Analog Devices Inc./Maxim Integrated

744
RFQ
DS12C887+ Datasheet

Datasheet

- 24-DIP Module (0.600", 15.24mm) Tube Active Not Verified Clock/Calendar Alarm, Daylight Savings, Leap Year, NVSRAM, Square Wave Output 113B 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 Through Hole - - 24-EDIP
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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.