Real Time Clocks：

Compare Mfr Part # Quantity Available Series Package Product Status Programmable Type Features Memory Size Time Format Date Format Interface Voltage - Supply Voltage - Supply, Battery Current - Timekeeping (Max) Operating Temperature Mounting Type Package / Case Supplier Device Package

RTC-7301SF:B ROHS IC RTC CLK/CALENDAR PAR 24SSOP

50

-

Bulk

Obsolete

Not Verified

Clock/Calendar

Alarm

-

-

-

Parallel

2.4V ~ 5.5V

-

1µA ~ 2µA @ 3V ~ 5V

-40°C ~ 85°C

Surface Mount

24-SOP (0.213", 5.40mm Width)

24-SSOP

RTC-7301SF:B0 ROHS IC RTC CLK/CALENDAR PAR 24SSOP

50

-

Tape & Reel (TR)

Obsolete

Not Verified

Clock/Calendar

Alarm

-

-

-

Parallel

2.4V ~ 5.5V

-

1µA ~ 2µA @ 3V ~ 5V

-40°C ~ 85°C

Surface Mount

24-SOP (0.213", 5.40mm Width)

24-SSOP

RX-4045SA:AA IC RTC CLK/CALENDAR SPI 14SOP

50

RX-4045SA

Tube

Obsolete

Not Verified

Clock/Calendar

Alarm, Leap Year

-

HH:MM:SS (12/24 hr)

YY-MM-DD-dd

SPI

1.7V ~ 5.5V

-

1.2µA ~ 1.8µA @ 3V ~ 5V

-40°C ~ 85°C

Surface Mount

14-SOIC (0.197", 5.00mm Width)

14-SOP

RX-4571LC:B PURE SN IC RTC CLK/CALENDAR SER 12VSOJ

50

RX-4571LC

Strip

Active

Not Verified

Clock/Calendar

Alarm, Leap Year

-

-

-

3-Wire Serial

1.6V ~ 5.5V

-

0.95µA ~ 1µA @ 3V ~ 5V

-40°C ~ 85°C

Surface Mount

12-TFSOJ (0.094", 2.40mm Width)

12-VSOJ

RX-4574LC:B PURE SN IC RTC CLK/CALENDAR SER 12VSOJ

50

RX-4574LC

Strip

Obsolete

Not Verified

Clock/Calendar

Alarm

-

-

-

3-Wire Serial

1.6V ~ 5.5V

-

0.7µA ~ 0.9µA @ 3V ~ 5V

-40°C ~ 85°C

Surface Mount

12-TFSOJ (0.094", 2.40mm Width)

12-VSOJ

RX-4575LC:B IC RTC CLK/CALENDAR SER 12VSOJ

50

RX-4575LC

Strip

Obsolete

Not Verified

Clock/Calendar

Alarm

-

-

-

3-Wire Serial

1.6V ~ 5.5V

-

0.7µA ~ 0.9µA @ 3V ~ 5V

-40°C ~ 85°C

Surface Mount

12-TFSOJ (0.094", 2.40mm Width)

12-VSOJ

RX-4801SA:UB PURE SN IC RTC CLK/CALENDAR SER 14SOP

50

RX-4801SA

Bulk

Obsolete

Not Verified

Clock/Calendar

Alarm

-

-

-

4-Wire Serial

1.6V ~ 5.5V

-

2.1µA ~ 3.4µA @ 3V ~ 5V

-40°C ~ 85°C

Surface Mount

14-SOIC (0.197", 5.00mm Width)

14-SOP

RX-4801SA:UB0 PURE SN IC RTC CLK/CALENDAR SER 14SOP

50

RX-4801SA

Tape & Reel (TR)

Obsolete

Not Verified

Clock/Calendar

Alarm

-

-

-

4-Wire Serial

1.6V ~ 5.5V

-

2.1µA ~ 3.4µA @ 3V ~ 5V

-40°C ~ 85°C

Surface Mount

14-SOIC (0.197", 5.00mm Width)

14-SOP

RX-8025SA:AA IC TRC CLK/CALENDAR

50

*

Tube

Active

Not Verified

-

-

-

-

-

-

-

-

-

-

-

-

-

RX-8025SA:AA0 IC TRC CLK/CALENDAR

50

*

Tape & Reel (TR)

Active

Not Verified

-

-

-

-

-

-

-

-

-

-

-

-

-

RX-8581JE:B I2C-BUS IC RTC CLK/CALENDAR I2C 20VSOJ

50

RX-8581JE

Strip

Obsolete

Not Verified

Clock/Calendar

Alarm

-

-

-

I²C

1.8V ~ 5.5V

-

0.8µA ~ 1.2µA @ 3V ~ 5V

-40°C ~ 85°C

Surface Mount

20-LSSOJ (0.213", 5.40mm Width)

20-VSOJ

RX-8581JE:B0 I2C-BUS IC RTC CLK/CALENDAR I2C 20VSOJ

50

RX-8581JE

Tape & Reel (TR)

Obsolete

Not Verified

Clock/Calendar

Alarm

-

-

-

I²C

1.8V ~ 5.5V

-

0.8µA ~ 1.2µA @ 3V ~ 5V

-40°C ~ 85°C

Surface Mount

20-LSSOJ (0.213", 5.40mm Width)

20-VSOJ

RX-8581NB:B I2C-BUS IC RTC CLK/CALENDAR I2C 22SON

50

RX-8581NB

Strip

Obsolete

Not Verified

Clock/Calendar

Alarm

-

-

-

I²C

1.8V ~ 5.5V

-

0.8µA ~ 1.2µA @ 3V ~ 5V

-40°C ~ 85°C

Surface Mount

22-LFDFN

22-SON (6.3x4.8)

RX-8581NB:B PURE SN IC RTC CLK/CALENDAR I2C 22SON

50

RX-8581NB

Strip

Obsolete

Not Verified

Clock/Calendar

Alarm

-

-

-

I²C

1.8V ~ 5.5V

-

0.8µA ~ 1.2µA @ 3V ~ 5V

-40°C ~ 85°C

Surface Mount

22-LFDFN

22-SON (6.3x4.8)

RX-8731LC:B IC RTC CLK/CALENDAR I2C 12VSOJ

50

RX-8731LC

Bulk

Obsolete

Not Verified

Clock/Calendar

Alarm, EEPROM, Leap Year, Unique ID

80b

HH:MM:SS (24 hr)

YY-MM-DD-dd

I²C

1.7V ~ 5.5V

-

1.4µA ~ 1.5µA @ 3V ~ 5V

-40°C ~ 85°C

Surface Mount

12-TFSOJ (0.094", 2.40mm Width)

12-VSOJ

  • RTC-7301SF:B ROHS

    IC RTC CLK/CALENDAR PAR 24SSOP

    Details

  • RTC-7301SF:B0 ROHS

    IC RTC CLK/CALENDAR PAR 24SSOP

    Details

  • RX-4045SA:AA

    IC RTC CLK/CALENDAR SPI 14SOP

    Details

  • RX-4571LC:B PURE SN

    IC RTC CLK/CALENDAR SER 12VSOJ

    Details

  • RX-4574LC:B PURE SN

    IC RTC CLK/CALENDAR SER 12VSOJ

    Details

  • RX-4575LC:B

    IC RTC CLK/CALENDAR SER 12VSOJ

    Details

  • RX-4801SA:UB PURE SN

    IC RTC CLK/CALENDAR SER 14SOP

    Details

  • RX-4801SA:UB0 PURE SN

    IC RTC CLK/CALENDAR SER 14SOP

    Details

  • RX-8025SA:AA

    IC TRC CLK/CALENDAR

    Details

  • RX-8025SA:AA0

    IC TRC CLK/CALENDAR

    Details

  • RX-8581JE:B I2C-BUS

    IC RTC CLK/CALENDAR I2C 20VSOJ

    Details

  • RX-8581JE:B0 I2C-BUS

    IC RTC CLK/CALENDAR I2C 20VSOJ

    Details

  • RX-8581NB:B I2C-BUS

    IC RTC CLK/CALENDAR I2C 22SON

    Details

  • RX-8581NB:B PURE SN

    IC RTC CLK/CALENDAR I2C 22SON

    Details

  • RX-8731LC:B

    IC RTC CLK/CALENDAR I2C 12VSOJ

    Details

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