Clock/Timing - Real Time Clocks

Active

Clock/Calendar

Alarm, Daylight Savings, Leap Year, NVSRAM, Square Wave Output

8KB

HH:MM:SS (12/24 hr)

YY-MM-DD-dd

Parallel

2.7V ~ 3.7V

2.5V ~ 3.7V

2mA @ 2.7V ~ 3.7V

0°C ~ 70°C

Surface Mount

24-SOIC (0.295", 7.50mm Width)

24-SOIC

Obsolete

Clock/Calendar

Leap Year, NVSRAM, Square Wave Output

56B

HH:MM:SS (12/24 hr)

YY-MM-DD-dd

I²C, 2-Wire Serial

3V ~ 5.5V

1.3V ~ 3.7V

125µA ~ 200µA @ 3.63V ~ 5.5V

-40°C ~ 85°C

Surface Mount

8-TSSOP, 8-MSOP (0.118", 3.00mm Width)

8-uMAX/uSOP

Obsolete

Clock/Calendar

Alarm, Daylight Savings, NVSRAM

242B

HH:MM:SS (12/24 hr)

YY-MM-DD-dd

Parallel

2.7V ~ 5.5V

2.4V ~ 4V

100µA @ 3V

0°C ~ 70°C

Surface Mount

24-SSOP (0.154", 3.90mm Width)

24-SSOP

Active

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 ~ 5.5V

-40°C ~ 85°C

Surface Mount

8-TSSOP (0.173", 4.40mm Width)

8-TSSOP

Active

Clock/Calendar

Alarm, Leap Year, Square Wave Output

-

HH:MM:SS (12/24 hr)

YY-MM-DD-dd

I²C, 2-Wire Serial

1.8V ~ 5.5V

-

0.6µA @ 1.3V ~ 1.8V

-40°C ~ 85°C

Surface Mount

8-SOIC (0.154", 3.90mm Width)

8-SOIC

Obsolete

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 (0.154", 3.90mm Width)

14-SOIC

Active

Clock/Calendar

Alarm, EEPROM, Leap Year, Square Wave Output, SRAM, Watchdog Timer

64B

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

YY-MM-DD-dd

SPI

1.8V ~ 3.6V

1.3V ~ 3.6V

1µA @ 1.8V ~ 5.5V

-40°C ~ 85°C

Surface Mount

14-SOIC (0.154", 3.90mm Width)

14-SOIC

Active

Portable System Controller

Alarm, Leap Year, Watchdog Timer

-

HH:MM:SS (12/24 hr)

YY-MM-DD-dd

3-Wire Serial

2.7V ~ 3.3V

2.5V ~ 3.7V

100µA @ 3V

0°C ~ 70°C

Surface Mount

20-TSSOP (0.173", 4.40mm Width)

20-TSSOP

Obsolete

Clock/Calendar

Leap Year, NVSRAM, Square Wave Output

56B

HH:MM:SS (12/24 hr)

YY-MM-DD-dd

I²C, 2-Wire Serial

3V ~ 5.5V

1.3V ~ 3.7V

125µA ~ 200µA @ 3.63V ~ 5.5V

-40°C ~ 85°C

Surface Mount

8-TSSOP, 8-MSOP (0.118", 3.00mm Width)

8-uMAX/uSOP

Active

Clock/Calendar

Alarm, Leap Year, RAM

-

HH:MM:SS (12/24 hr)

YY-MM-DD-dd

I²C, 2-Wire Serial

1.5V ~ 5.5V

-

0.9µA @ 3V

-40°C ~ 85°C

Surface Mount

10-VFSOP, 10-MSOP (0.110", 2.80mm Width)

10-TSSOPG

Active

-

-

-

-

-

-

-

-

-

-

-

-

-

Active

Clock/Calendar

Alarm, NVSRAM, Square Wave Output, Y2K

242B

HH:MM:SS (12/24 hr)

YY-MM-DD-dd

Parallel

4.5V ~ 5.5V

2.5V ~ 3.7V

3mA @ 5V

0°C ~ 70°C

Surface Mount

24-SOIC (0.295", 7.50mm Width)

24-SOIC

Active

Clock/Calendar

Leap Year

-

HH:MM:SS (24 hr)

YY-MM-DD-dd

Parallel

4.5V ~ 5.5V

-

2mA @ 4.75V ~ 5.5V

0°C ~ 70°C

Surface Mount

28-SOP (0.350", 8.89mm Width) with SNAPHAT Sockets

28-SOH

Active

Clock/Calendar

Alarm, Daylight Savings, Leap Year, SRAM

128B

HH:MM:SS (12/24 hr)

YY-MM-DD-dd

I²C, 2-Wire Serial

2.7V ~ 5.5V

1.8V ~ 5.5V

14µA ~ 15µA @ 3V ~ 5V

-40°C ~ 85°C

Surface Mount

8-SOIC (0.154", 3.90mm Width)

8-SOIC

Active

Clock/Calendar

Alarm, Leap Year

-

HH:MM:SS (12/24 hr)

YY-MM-DD-dd

I²C, 2-Wire Serial

1.8V ~ 3.6V

-

0.65µA @ 1.8V

-40°C ~ 85°C

Surface Mount

8-WDFN Exposed Pad

8-TDFN (3x3)

Active

Clock/Calendar

Alarm, Leap Year, RAM

1B

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

YY-MM-DD-dd

3-Wire Serial

2V ~ 5.5V

-

10µA @ 5V

-40°C ~ 85°C (TA)

Surface Mount

8-SOIC (0.154", 3.90mm Width)

8-SOIC

Active

Clock/Calendar

Alarm, Battery Switch, Clock Output Hz-MHz, Event Input, Temperature Alarm, Timer, Trickle Charge with Charge Pump

16B, 32B

HH:MM:SS:100th (24 hr)

YY-MM-DD-dd

I²C, 2-Wire Serial

1.3V ~ 5.5V

-

210nA @ 3V

-40°C ~ 85°C (TA)

Surface Mount

8-WCDFN

8-SON (3.2x1.5)

Active

Clock/Calendar

Alarm, Leap Year, NVSRAM, Square Wave Output, Watchdog Timer, Y2K

256B

HH:MM:SS (24 hr)

YY-MM-DD-dd

Parallel

3V ~ 3.6V

2.5V ~ 3.7V

4mA @ 3V ~ 3.6V

-40°C ~ 85°C

Surface Mount

28-SOIC (0.295", 7.50mm Width)

28-SOIC

Active

Clock/Calendar

Alarm, Leap Year, Square Wave Output, SRAM, TCXO/Crystal, Watchdog Timer

512B

HH:MM:SS (12/24 hr)

YY-MM-DD-dd

I²C, 2-Wire Serial

1.8V ~ 4.2V

1.8V ~ 4.2V

1.5µA @ 3.3V

-40°C ~ 85°C

Surface Mount

20-SOIC (0.295", 7.50mm Width)

20-SO

Obsolete

Clock/Calendar

Alarm, NVSRAM, Square Wave Output, Y2K

242B

HH:MM:SS (12/24 hr)

YY-MM-DD-dd

Parallel

4.5V ~ 5.5V

2.5V ~ 3.7V

3mA @ 5V

-40°C ~ 85°C

Surface Mount

28-LCC (J-Lead)

28-PLCC (11.51x11.51)

Active

Clock/Calendar

Alarm, Leap Year, Square Wave Output, SRAM, Watchdog Timer

7B

HH:MM:SS:hh (24 hr)

YY-MM-DD-dd

I²C, 2-Wire Serial

3V ~ 5.5V

2V ~ 5.5V

10µA @ 5.5V

-40°C ~ 85°C

Surface Mount

18-SOX, 18-SOIC with Crystal (7.5mm Width)

18-SOX

Active

Clock/Calendar

Alarm, Battery Switch, Clock Output Hz-MHz, Event Input, Temperature Alarm, Timer, Trickle Charge with Charge Pump

16B, 32B

HH:MM:SS:100th (24 hr)

YY-MM-DD-dd

I²C, 2-Wire Serial

1.3V ~ 5.5V

-

210nA @ 3V

-40°C ~ 85°C (TA)

Surface Mount

8-WCDFN

8-SON (3.2x1.5)

Active

Clock/Calendar

Alarm, Leap Year, Square Wave Output

-

HH:MM:SS (24 hr)

YY-MM-DD-dd

I²C, 2-Wire Serial

1.3V ~ 5.5V

-

0.65µA ~ 0.85µA @ 3V ~ 5V

-40°C ~ 85°C (TA)

Surface Mount

8-TSSOP, 8-MSOP (0.118", 3.00mm Width)

8-MSOP

Active

Clock/Calendar

Alarm, Leap Year, Programmable Clock Output, Timer

-

HH:MM:SS (24 hr)

YY-MM-DD-dd

I²C, 2-Wire Serial

1V ~ 5.5V

-

0.35µA @ 3V

-40°C ~ 85°C (TA)

Surface Mount

10-TCDFN Exposed Pad

10-SON (5x3.2)