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

EM3027IDSSO8A+ LINEAR IC

50

-

Tube

Active

-

Clock/Calendar

Alarm, EEPROM, Leap Year, RAM, Trickle-Charger

8B

HH:MM:SS (12/24 hr)

YY-MM-DD-dd

I²C

1.4V ~ 5.5V

1.4V ~ 5.5V

4.6µA ~ 5.5µA @ 1.4V ~ 5V

-40°C ~ 85°C (TA)

Surface Mount

8-SOIC (0.154", 3.90mm Width)

8-SOIC

V3021SO8B+ LINEAR IC

50

-

Tape & Reel (TR)

Active

-

Clock/Calendar

Leap Year, RAM

1B

HH:MM:SS

YY-MM-DD-dd

3-Wire Serial

2V ~ 5.5V

-

1.8µA @ 5V

-40°C ~ 85°C (TA)

Surface Mount

8-SOIC (0.154", 3.90mm Width)

8-SOIC

V3020SO8B+ IC RTC CLK/CALENDAR SER 8SOIC

50

-

Tape & Reel (TR)

Active

Not Verified

Clock/Calendar

Alarm, Leap Year, RAM

1B

HH:MM:SS

YY-MM-DD-dd

3-Wire Serial

1.2V ~ 5.5V

-

4µA ~ 7µA @ 3V ~ 5V

-40°C ~ 85°C (TA)

Surface Mount

8-SOIC (0.154", 3.90mm Width)

8-SOIC

EM3029V02SM10B+ LINEAR IC

50

-

Tape & Reel (TR)

Active

-

-

-

-

-

-

-

-

-

-

-

-

-

-

V3020TP8B+ IC RTC CLK/CALENDAR SER 8TSSOP

50

-

Tape & Reel (TR)

Active

Not Verified

Clock/Calendar

Alarm, Leap Year, RAM

1B

HH:MM:SS

YY-MM-DD-dd

3-Wire Serial

1.2V ~ 5.5V

-

4µA ~ 7µA @ 3V ~ 5V

-40°C ~ 85°C (TA)

Surface Mount

8-TSSOP (0.173", 4.40mm Width)

8-TSSOP

EM3028C7B+ IC RTC CLOCK/CALENDAR I2C SMD

50

-

Tape & Reel (TR)

Active

Not Verified

Clock/Calendar

Alarm, EEPROM, Leap Year, Square Wave Output, Trickle-Charger

43B

HH:MM:SS (12/24 hr)

YY-MM-DD-dd

I²C

1.1V, 1.2V, 2V ~ 5.5V

1.1V ~ 5.5V

0.4µA @ 5V

-40°C ~ 85°C (TA)

Surface Mount

8-SMD

SMD

V3021DL8A+ LINEAR IC

50

-

Tube

Active

-

Clock/Calendar

Leap Year, RAM

1B

HH:MM:SS

YY-MM-DD-dd

3-Wire Serial

2V ~ 5.5V

-

1.8µA @ 5V

-40°C ~ 85°C (TA)

Through Hole

8-DIP (0.300", 7.62mm)

8-DIP

V3020XSO8B+ LINEAR IC

50

-

Tape & Reel (TR)

Active

-

Clock/Calendar

Leap Year, RAM

1B

HH:MM:SS

YY-MM-DD-dd

3-Wire Serial

1.2V ~ 5.5V

-

0.49µA ~ 0.6µA @ 3V ~ 5V

-40°C ~ 125°C (TA)

Surface Mount

8-SOIC (0.154", 3.90mm Width)

8-SOIC

V3020XSO8A+ IC RTC CLK/CALENDAR SER 8SOIC

50

-

Tube

Active

Not Verified

Clock/Calendar

Alarm, Leap Year, RAM

1B

HH:MM:SS:hh (12/24 hr)

YY-MM-DD-dd

3-Wire Serial

1.2V ~ 5.5V

-

7µA @ 5V

-40°C ~ 125°C (TA)

Surface Mount

8-SOIC (0.154", 3.90mm Width)

8-SOIC

RV-3049-C3-TB-QA-OPT B LINEAR IC

50

-

Tape & Reel (TR)

Active

-

-

-

-

-

-

-

-

-

-

-

-

-

-

RV-3049-C3-TA-QC-OPT A LINEAR IC

50

-

Tape & Reel (TR)

Active

-

-

-

-

-

-

-

-

-

-

-

-

-

-

A3024SO20A+ IC RTC CLOCK/CALENDAR 20SO

50

-

Tube

Active

Not Verified

Clock/Calendar

Alarm, Leap Year, RAM

8B

HH:MM:SS:hh (12/24 hr)

YY-MM-DD-dd

-

2V ~ 5.5V

-

10µA ~ 15µA @ 3V ~ 5V

-40°C ~ 85°C (TA)

Surface Mount

20-SOIC (0.295", 7.50mm Width)

20-SO

V3022SO28B+ LINEAR IC

50

-

Tape & Reel (TR)

Active

-

Clock/Calendar

Alarm, Leap Year, RAM

8B

HH:MM:SS:hh (12/24 hr)

YY-MM-DD-dd

-

2V ~ 5.5V

-

10µA @ 3V

-40°C ~ 85°C (TA)

Surface Mount

28-SOIC (0.295", 7.50mm Width)

28-SOIC

V3025SO28B+ IC RTC CLK/CALENDAR 28SOIC

50

-

Tape & Reel (TR)

Active

Not Verified

Clock/Calendar

Alarm, Leap Year, RAM

8B

HH:MM:SS:hh (12/24 hr)

YY-MM-DD-dd

-

2V ~ 5.5V

2V ~ 4V

15µA @ 5.5V

-40°C ~ 85°C (TA)

Surface Mount

28-SOIC (0.295", 7.50mm Width)

28-SOIC

V3023SO28A+ IC RTC CLOCK/CALENDAR 28SOIC

50

-

Tube

Obsolete

Not Verified

Clock/Calendar

Alarm, Leap Year, RAM

8B

HH:MM:SS:hh (12/24 hr)

YY-MM-DD-dd

-

2V ~ 5.5V

-

15µA @ 5V

-40°C ~ 85°C (TA)

Surface Mount

28-SOIC (0.295", 7.50mm Width)

28-SOIC

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