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
DS1678S+ Analog Devices Inc./Maxim Integrated

DS1678S+

IC RTC TIME EVENT REC I2C 8SOIC

Analog Devices Inc./Maxim Integrated

2,513
RFQ
DS1678S+ Datasheet

Datasheet

- 8-SOIC (0.209", 5.30mm Width) Tube Active Not Verified Time Event Recorder Alarm, Leap Year, NVSRAM, Y2K 32B HH:MM:SS (12/24 hr) YY-MM-DD-dd I2C, 2-Wire Serial 4.5V ~ 5.5V 2.6V ~ 3.5V - -40°C ~ 85°C Surface Mount - - 8-SOIC
DS1306N+ Analog Devices Inc./Maxim Integrated

DS1306N+

IC RTC CLK/CALENDAR SPI 16DIP

Analog Devices Inc./Maxim Integrated

214
RFQ
DS1306N+ Datasheet

Datasheet

- 16-DIP (0.300", 7.62mm) Tube Active 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 Through Hole - - 16-PDIP
DS12885+ Analog Devices Inc./Maxim Integrated

DS12885+

IC RTC CLK/CALENDAR PAR 24DIP

Analog Devices Inc./Maxim Integrated

3,722
RFQ
DS12885+ Datasheet

Datasheet

- 24-DIP (0.600", 15.24mm) Tube Active 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 Through Hole - - 24-PDIP
DS3232MZ/V+ Analog Devices Inc./Maxim Integrated

DS3232MZ/V+

IC RTC CLK/CALENDAR I2C 8SOIC

Analog Devices Inc./Maxim Integrated

182
RFQ
DS3232MZ/V+ Datasheet

Datasheet

- 8-SOIC (0.154", 3.90mm Width) Tube Not For New Designs 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 Automotive AEC-Q100 8-SOIC
DS3234S# Analog Devices Inc./Maxim Integrated

DS3234S#

IC RTC CLK/CALENDAR SPI 20SOIC

Analog Devices Inc./Maxim Integrated

909
RFQ
DS3234S# 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 0°C ~ 70°C Surface Mount - - 20-SOIC
DS3232S# Analog Devices Inc./Maxim Integrated

DS3232S#

IC RTC CLK/CALENDAR I2C 20SOIC

Analog Devices Inc./Maxim Integrated

1,008
RFQ
DS3232S# 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 0°C ~ 70°C Surface Mount - - 20-SOIC
M48T201Y-70MH1F STMicroelectronics

M48T201Y-70MH1F

IC RTC CLK/CALENDAR PAR 44SOH

STMicroelectronics

3,558
RFQ
M48T201Y-70MH1F Datasheet

Datasheet

Timekeeper® 44-BSOP (0.337", 8.56mm Width) requires SNAPHAT Tape & Reel (TR) Active Not Verified Clock/Calendar Alarm, Leap Year, Square Wave Output, Supervisor, Watchdog Timer, Y2K - HH:MM:SS (24 hr) YY-MM-DD-dd Parallel 4.5V ~ 5.5V 3V 3mA @ 4.5V ~ 5.5V 0°C ~ 70°C Surface Mount - - 44-SOH
DS12C887A+ Analog Devices Inc./Maxim Integrated

DS12C887A+

IC RTC CLK/CALENDAR PAR 24EDIP

Analog Devices Inc./Maxim Integrated

916
RFQ
DS12C887A+ 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
DS12CR887-5+ Analog Devices Inc./Maxim Integrated

DS12CR887-5+

IC RTC CLK/CALENDAR PAR 24EDIP

Analog Devices Inc./Maxim Integrated

4,730
RFQ
DS12CR887-5+ Datasheet

Datasheet

- 24-DIP Module (0.600", 15.24mm) Tube Active Not Verified Clock/Calendar Alarm, Leap Year, NVSRAM, Square Wave Output, Trickle-Charger 114B HH:MM:SS (12/24 hr) YY-MM-DD-dd Parallel 4.5V ~ 5.5V 2V ~ 3.05V 2mA @ 4.5V ~ 5.5V -40°C ~ 85°C Through Hole - - 24-EDIP
DS12CR887-33+ Analog Devices Inc./Maxim Integrated

DS12CR887-33+

IC RTC CLK/CALENDAR PAR 24EDIP

Analog Devices Inc./Maxim Integrated

2,378
RFQ
DS12CR887-33+ Datasheet

Datasheet

- 24-DIP Module (0.600", 15.24mm) Tube Active Not Verified Clock/Calendar Alarm, Leap Year, NVSRAM, Square Wave Output, Trickle-Charger 114B HH:MM:SS (12/24 hr) YY-MM-DD-dd Parallel 2.97V ~ 3.63V 2V ~ 3.05V 2mA @ 2.97V ~ 3.63V -40°C ~ 85°C Through Hole - - 24-EDIP
M48T12-70PC1 STMicroelectronics

M48T12-70PC1

IC RTC CLK/CALENDAR PAR 24DIP

STMicroelectronics

488
RFQ
M48T12-70PC1 Datasheet

Datasheet

Timekeeper® 24-DIP Module (0.600", 15.24mm) Tube 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 Through Hole - - 24-PCDIP, CAPHAT®
DS1315S-5+ Analog Devices Inc./Maxim Integrated

DS1315S-5+

IC RTC PHANTOM CHIP PAR 16SOIC

Analog Devices Inc./Maxim Integrated

446
RFQ
DS1315S-5+ Datasheet

Datasheet

- 16-SOIC (0.295", 7.50mm Width) Tube Active Not Verified Phantom Time Chip Leap Year - HH:MM:SS:hh (12/24 hr) YY-MM-DD-dd Parallel 4.5V ~ 5.5V 2.5V ~ 3.7V 1.3mA @ 5V 0°C ~ 70°C Surface Mount - - 16-SOIC
CDP68HC68T1M2Z Renesas Electronics Corporation

CDP68HC68T1M2Z

IC RTC CLK/CALENDAR SPI 16SOIC

Renesas Electronics Corporation

540
RFQ
CDP68HC68T1M2Z Datasheet

Datasheet

- 16-SOIC (0.295", 7.50mm Width) Tube Active Not Verified Clock/Calendar Alarm, Leap Year, Square Wave Output, Watchdog Timer 32B HH:MM:SS (12/24 hr) YY-MM-DD-dd SPI 3V ~ 6V 2.2V ~ 6V 20µA ~ 500µA @ 5V -40°C ~ 85°C Surface Mount - - 16-SOIC
DS17487-5+ Analog Devices Inc./Maxim Integrated

DS17487-5+

IC RTC CLK/CALENDAR PAR 24EDIP

Analog Devices Inc./Maxim Integrated

2,106
RFQ
DS17487-5+ Datasheet

Datasheet

- 24-DIP Module (0.600", 15.24mm) Tube Active Not Verified Clock/Calendar Alarm, Daylight Savings, Leap Year, NVSRAM, Square Wave Output 4KB HH:MM:SS (12/24 hr) YY-MM-DD-dd Parallel 4.5V ~ 5.5V 2.5V ~ 3.7V 3mA @ 4.5V ~ 5.5V 0°C ~ 70°C Through Hole - - 24-EDIP
DS1315SN-5+ Analog Devices Inc./Maxim Integrated

DS1315SN-5+

IC RTC PHANTOM CHIP PAR 16SOIC

Analog Devices Inc./Maxim Integrated

382
RFQ
DS1315SN-5+ Datasheet

Datasheet

- 16-SOIC (0.295", 7.50mm Width) Tube Active Not Verified Phantom Time Chip Leap Year - HH:MM:SS:hh (12/24 hr) YY-MM-DD-dd Parallel 4.5V ~ 5.5V 2.5V ~ 3.7V 1.3mA @ 5V -40°C ~ 85°C Surface Mount - - 16-SOIC
DS1554WP-120IND+ Analog Devices Inc./Maxim Integrated

DS1554WP-120IND+

IC RTC CLK/CALENDAR PAR 34PCM

Analog Devices Inc./Maxim Integrated

259
RFQ
DS1554WP-120IND+ Datasheet

Datasheet

- 34-PowerCap™ Module Tray Active Not Verified Clock/Calendar Alarm, Leap Year, NVSRAM, Watchdog Timer, Y2K 32KB HH:MM:SS (24 hr) YY-MM-DD-dd Parallel 2.97V ~ 3.63V 3V 4mA @ 3.3V -40°C ~ 85°C Surface Mount - - 34-PowerCap Module
MCP7940MT-I/ST Microchip Technology

MCP7940MT-I/ST

IC RTC CLK/CALENDAR I2C 8TSSOP

Microchip Technology

1,374
RFQ
MCP7940MT-I/ST Datasheet

Datasheet

- 8-TSSOP (0.173", 4.40mm Width) Tape & Reel (TR) Active Not Verified Clock/Calendar Alarm, Leap Year, Square Wave Output, SRAM 64B HH:MM:SS (12/24 hr) YY-MM-DD-dd I2C, 2-Wire Serial 1.8V ~ 5.5V - 1µA @ 5.5V -40°C ~ 85°C Surface Mount - - 8-TSSOP
PCF85063BTL/1,118 NXP USA Inc.

PCF85063BTL/1,118

IC RTC CLK/CALENDAR SPI 10DFN

NXP USA Inc.

19,731
RFQ
PCF85063BTL/1,118 Datasheet

Datasheet

- 10-XFDFN Exposed Pad Tape & Reel (TR) Active Not Verified Clock/Calendar Alarm, Leap Year, Square Wave Output - HH:MM:SS (12/24 hr) YY-MM-DD-dd SPI 0.9V ~ 5.5V - 0.6µA @ 3.3V -40°C ~ 85°C Surface Mount - - 10-DFN (2.6x2.6)
MCP79402-I/ST Microchip Technology

MCP79402-I/ST

IC RTC CLK/CALENDAR I2C 8TSSOP

Microchip Technology

339
RFQ
MCP79402-I/ST Datasheet

Datasheet

- 8-TSSOP (0.173", 4.40mm Width) Tube Active Not Verified Clock/Calendar Alarm, Leap Year, Square Wave Output, SRAM, Unique ID 64B HH:MM:SS (12/24 hr) YY-MM-DD-dd I2C, 2-Wire Serial 1.8V ~ 5.5V 1.3V ~ 5.5V 1.2µA (Typ) @ 3.3V -40°C ~ 85°C Surface Mount - - 8-TSSOP
MCP79401-I/MS Microchip Technology

MCP79401-I/MS

IC RTC CLK/CALENDAR I2C 8MSOP

Microchip Technology

218
RFQ
MCP79401-I/MS Datasheet

Datasheet

- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Tube Active Not Verified Clock/Calendar Alarm, Leap Year, Square Wave Output, SRAM, Unique ID 64B HH:MM:SS (12/24 hr) YY-MM-DD-dd I2C, 2-Wire Serial 1.8V ~ 5.5V 1.3V ~ 5.5V 1.2µA (Typ) @ 3.3V -40°C ~ 85°C Surface Mount - - 8-MSOP
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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.