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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
RTC-62421A EPSON

RTC-62421A

IC RTC CLK/CALENDAR PAR 18DIP

EPSON

2,969 -
Datasheet - 18-DIP (0.300", 7.62mm) Tube Obsolete Not Verified Clock/Calendar Leap Year - HH:MM:SS (12/24 hr) YY-MM-DD-dd Parallel 4.5V ~ 5.5V - 1.8µA ~ 3µA @ 2V ~ 5V -40°C ~ 85°C Through Hole - - 18-DIP
RTC-72421A EPSON

RTC-72421A

IC RTC CLK/CALENDAR PAR 18DIP

EPSON

1,244 -
Datasheet - 18-DIP (0.300", 7.62mm) Tube Obsolete Not Verified Clock/Calendar Leap Year - HH:MM:SS (12/24 hr) YY-MM-DD-dd Parallel 4.5V ~ 5.5V - 5µA ~ 10µA @ 2V ~ 5V -10°C ~ 70°C Through Hole - - 18-DIP
RTC-72421B EPSON

RTC-72421B

IC RTC CLK/CALENDAR PAR 18DIP

EPSON

4,312 -
Datasheet - 18-DIP (0.300", 7.62mm) Tube Obsolete Not Verified Clock/Calendar Leap Year - HH:MM:SS (12/24 hr) YY-MM-DD-dd Parallel 4.5V ~ 5.5V - 5µA ~ 10µA @ 2V ~ 5V -10°C ~ 70°C Through Hole - - 18-DIP
RTC-72423A EPSON

RTC-72423A

IC RTC CLK/CALENDAR PAR 24SOP

EPSON

4,830 -
Datasheet - 24-SOIC (0.311", 7.90mm Width) Tube Obsolete Not Verified Clock/Calendar Leap Year - HH:MM:SS (12/24 hr) YY-MM-DD-dd Parallel 4.5V ~ 5.5V - 5µA ~ 10µA @ 2V ~ 5V -40°C ~ 85°C Surface Mount - - 24-SOP
RTC-72423B EPSON

RTC-72423B

IC RTC CLK/CALENDAR PAR 24SOP

EPSON

2,212 -
Datasheet - 24-SOIC (0.311", 7.90mm Width) Tube Obsolete Not Verified Clock/Calendar Leap Year - HH:MM:SS (12/24 hr) YY-MM-DD-dd Parallel 4.5V ~ 5.5V - 5µA ~ 10µA @ 2V ~ 5V -40°C ~ 85°C Surface Mount - - 24-SOP
RTC-63423B EPSON

RTC-63423B

IC RTC CLK/CALENDAR PAR 24SOP

EPSON

2,228 -
Datasheet - 24-SOIC (0.311", 7.90mm Width) Tube Obsolete Not Verified Clock/Calendar Alarm - HH:MM:SS (12/24 hr) YY-MM-DD-dd Parallel 4.5V ~ 5.5V - - -40°C ~ 85°C Surface Mount - - 24-SOP
RTC-63421B EPSON

RTC-63421B

IC RTC CLK/CALENDAR PAR 18DIP

EPSON

3,421 -
Datasheet - 18-DIP (0.300", 7.62mm) Tube Obsolete Not Verified Clock/Calendar Alarm - HH:MM:SS (12/24 hr) YY-MM-DD-dd Parallel 4.5V ~ 5.5V - - -40°C ~ 85°C Through Hole - - 18-DIP
RTC-4553A2 EPSON

RTC-4553A2

IC RTC CLK/CALENDAR SER 14SOP

EPSON

1,422 -
Datasheet - 14-SOIC (0.197", 5.00mm Width) Tape & Reel (TR) Obsolete Not Verified Clock/Calendar Leap Year, SRAM 120b HH:MM:SS (12/24 hr) YY-MM-DD-dd 4-Wire Serial 2.7V ~ 5.5V - 3µA @ 5V -30°C ~ 70°C Surface Mount - - 14-SOP
RTC-4543SB:A EPSON

RTC-4543SB:A

IC RTC CLK/CALENDAR SER 18SOP

EPSON

1,966 -
Datasheet - 18-SOIC (0.213", 5.40mm Width) Bulk Obsolete Not Verified Clock/Calendar Leap Year - HH:MM:SS (24 hr) YY-MM-DD-dd 3-Wire Serial 2.5V ~ 5.5V - 1µA ~ 3µA @ 2V ~ 5V -40°C ~ 85°C Surface Mount - - 18-SOP
RTC-72423A:2 EPSON

RTC-72423A:2

IC RTC CLK/CALENDAR PAR 24SOP

EPSON

1,292 -
Datasheet - 24-SOIC (0.311", 7.90mm Width) Tube Obsolete Not Verified Clock/Calendar Leap Year - HH:MM:SS (12/24 hr) YY-MM-DD-dd Parallel 4.5V ~ 5.5V - 5µA ~ 10µA @ 2V ~ 5V -40°C ~ 85°C Surface Mount - - 24-SOP
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Real Time Clocks FAQ

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