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Real Time Clocks

Compare the current Real Time Clocks Clock/Timing selection by manufacturer, stock status, datasheet and technical parameters. Use these details to narrow the list to parts that match your design, maintenance or purchasing requirements.

For a specific MPN, package, electrical rating or quantity requirement, send the details to EGOO. We can help confirm availability, quotation and alternative sourcing options.

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
ISL12029IB27Z Renesas Electronics Corporation

ISL12029IB27Z

IC RTC CLK/CALENDAR I2C 14SOIC

Renesas Electronics Corporation

1,414 -
Datasheet - 14-SOIC (0.154", 3.90mm Width) Tube Obsolete Not Verified Clock/Calendar Alarm, Leap Year, Supervisor, Watchdog Timer - 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 - - 14-SOIC
ISL12029IBZ Renesas Electronics Corporation

ISL12029IBZ

IC RTC CLK/CALENDAR I2C 14SOIC

Renesas Electronics Corporation

3,031 -
Datasheet - 14-SOIC (0.154", 3.90mm Width) Tube Obsolete Not Verified Clock/Calendar Alarm, Leap Year, Supervisor, Watchdog Timer - 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 - - 14-SOIC
ISL12029IV27Z Renesas Electronics Corporation

ISL12029IV27Z

IC RTC CLK/CALENDAR I2C 14TSSOP

Renesas Electronics Corporation

1,913 -
Datasheet - 14-TSSOP (0.173", 4.40mm Width) Tube Obsolete Not Verified Clock/Calendar Alarm, Leap Year, Supervisor, Watchdog Timer - 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 - - 14-TSSOP
ISL1208IB8 Renesas Electronics Corporation

ISL1208IB8

IC RTC CLK/CALENDAR I2C 8SOIC

Renesas Electronics Corporation

3,473 -
Datasheet - 8-SOIC (0.154", 3.90mm Width) Tube Obsolete Not Verified Clock/Calendar 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 - - 8-SOIC
ISL1208IB8-TK Renesas Electronics Corporation

ISL1208IB8-TK

IC RTC CLK/CALENDAR I2C 8SOIC

Renesas Electronics Corporation

2,626 -
Datasheet - 8-SOIC (0.154", 3.90mm Width) Tape & Reel (TR) Obsolete Not Verified Clock/Calendar 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 - - 8-SOIC
ISL1209IU10 Renesas Electronics Corporation

ISL1209IU10

IC RTC EVENT REC I2C 10MSOP

Renesas Electronics Corporation

1,710 -
Datasheet - 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) Tube Obsolete 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
ISL1209IU10-TK Renesas Electronics Corporation

ISL1209IU10-TK

IC RTC EVENT REC I2C 10MSOP

Renesas Electronics Corporation

3,674 -
Datasheet - 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) Tape & Reel (TR) Obsolete 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
X1205S8 Renesas Electronics Corporation

X1205S8

IC RTC CLK/CALENDAR I2C 8SOIC

Renesas Electronics Corporation

4,239 -
Datasheet - 8-SOIC (0.154", 3.90mm Width) Tube Obsolete 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 ~ 5V 0°C ~ 70°C Surface Mount - - 8-SOIC
X1205S8I Renesas Electronics Corporation

X1205S8I

IC RTC CLK/CALENDAR I2C 8SOIC

Renesas Electronics Corporation

1,174 -
Datasheet - 8-SOIC (0.154", 3.90mm Width) Tube Obsolete 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 ~ 5V -40°C ~ 85°C Surface Mount - - 8-SOIC
X1205S8IT1 Renesas Electronics Corporation

X1205S8IT1

IC RTC CLK/CALENDAR I2C 8SOIC

Renesas Electronics Corporation

4,156 -
Datasheet - 8-SOIC (0.154", 3.90mm Width) Tape & Reel (TR) Obsolete 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 ~ 5V -40°C ~ 85°C Surface Mount - - 8-SOIC
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Real Time Clocks FAQ

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Use the available manufacturer and technical filters to compare matching parts by specifications, stock status, pricing and datasheet information.

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Yes. Send the manufacturer part number and required quantity to our sourcing team for availability, lead-time and alternative sourcing support.

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Yes. EGOO supports BOM sourcing, prototype quantities and small-batch purchasing. Provide your part list and quantities for a quotation review.

What information should I provide when requesting a quote?

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