Clock/Timing - Real Time Clocks

IC RTC CLK/CALENDAR SPI 14-TSSOP

Tape & Reel (TR)

Obsolete

Clock/Calendar

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

64B

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

YY-MM-DD-dd

SPI

1.8 V ~ 5.5 V

1.3 V ~ 5.5 V

1µA @ 1.8V ~ 5.5V

-40°C ~ 85°C

Surface Mount

14-TSSOP (0.173", 4.40mm Width)

14-TSSOP

MCP7940NT-E/MS

2500+

0.747255

Increments of 2500

Leadtime
2-3 weeks

IC RTC CLK/CALENDAR I2C 8-MSOP

Tape & Reel (TR)

Active

Clock/Calendar

Alarm, Leap Year, Square Wave Output, SRAM

64B

HH:MM:SS (12/24 hr)

YY-MM-DD-dd

I²C, 2-Wire Serial

1.8 V ~ 5.5 V

1.3 V ~ 5.5 V

1.2µA @ 3.3V

-40°C ~ 125°C

Surface Mount

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

8-MSOP

MCP795B21T-I/SL

Leadtime
2-3 weeks

IC RTC CLK/CALENDAR SPI 14-SOIC

Tape & Reel (TR)

Obsolete

Clock/Calendar

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

64B

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

YY-MM-DD-dd

SPI

1.8 V ~ 5.5 V

1.3 V ~ 5.5 V

1µA @ 1.8V ~ 5.5V

-40°C ~ 85°C

Surface Mount

14-SOIC (0.154", 3.90mm Width)

14-SOIC

MCP7940N-E/MS

500+

0.747255

Increments of 500

Leadtime
2-3 weeks

IC RTC CLK/CALENDAR I2C 8-MSOP

Tube

Active

Clock/Calendar

Alarm, Leap Year, Square Wave Output, SRAM

64B

HH:MM:SS (12/24 hr)

YY-MM-DD-dd

I²C, 2-Wire Serial

1.8 V ~ 5.5 V

1.3 V ~ 5.5 V

1.2µA @ 3.3V

-40°C ~ 125°C

Surface Mount

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

8-MSOP

DS1338U-33+T&R-Cut

DS1338U-33+T&R

1+	3.31373
10+	3.12549
25+	2.5
50+	2.3751
100+	2.18755

Increments of 1

Leadtime
2-3 weeks

IC RTC CLK/CALENDAR I2C 8-USOP

Cut Tape (CT)

Active

Clock/Calendar

Leap Year, NVSRAM, Square Wave Output

56B

HH:MM:SS (12/24 hr)

YY-MM-DD-dd

I²C, 2-Wire Serial

3 V ~ 5.5 V

1.3 V ~ 3.7 V

125µA ~ 200µA @ 3.63V ~ 5.5V

-40°C ~ 85°C

Surface Mount

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

8-uMAX

DS3231SN#T&R-Cut

DS3231SN#T&R

1+	9.77451
10+	9.22549
25+	7.38
50+	7.01098
100+	6.45755

Increments of 1

Leadtime
2-3 weeks

IC RTC CLK/CALENDAR I2C 16-SOIC

Cut Tape (CT)

Active

Clock/Calendar

Alarm, Leap Year, Square Wave Output, TCXO/Crystal

HH:MM:SS (12/24 hr)

YY-MM-DD-dd

I²C, 2-Wire Serial

2.3 V ~ 5.5 V

110µA ~ 170µA @ 3.63V ~ 5.5V

-40°C ~ 85°C

Surface Mount

16-SOIC (0.295", 7.50mm Width)

16-SOIC

DS1339U-33+T&R-Cut

DS1339U-33+T&R

1+	3.5
10+	3.3
25+	2.64
50+	2.50804
100+	2.31

Increments of 1

Leadtime
2-3 weeks

IC RTC CLK/CALENDAR I2C 8-USOP

Cut Tape (CT)

Active

Clock/Calendar

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

HH:MM:SS (12/24 hr)

YY-MM-DD-dd

I²C, 2-Wire Serial

2.97 V ~ 5.5 V

1.3 V ~ 3.7 V

200µA @ 5.5V

-40°C ~ 85°C

Surface Mount

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

8-uMAX

DS1337U+T&R-Cut

DS1337U+T&R

1+	2.56863
10+	2.42549
25+	1.94
50+	1.84294
100+	1.69755

Increments of 1

Leadtime
2-3 weeks

IC RTC CLK/CALENDAR I2C 8-USOP

Cut Tape (CT)

Active

Clock/Calendar

Alarm, Leap Year, Square Wave Output

HH:MM:SS (12/24 hr)

YY-MM-DD-dd

I²C, 2-Wire Serial

1.8 V ~ 5.5 V

0.6µA @ 1.3V ~ 1.8V

-40°C ~ 85°C

Surface Mount

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

8-uMAX

DS1337S+T&R-Cut

DS1337S+T&R

1+	2.56863
10+	2.42549
25+	1.94
50+	1.84294
100+	1.69755

Increments of 1

Leadtime
2-3 weeks

IC RTC CLK/CALENDAR I2C 8-SOIC

Cut Tape (CT)

Active

Clock/Calendar

Alarm, Leap Year, Square Wave Output

HH:MM:SS (12/24 hr)

YY-MM-DD-dd

I²C, 2-Wire Serial

1.8 V ~ 5.5 V

0.6µA @ 1.3V ~ 1.8V

-40°C ~ 85°C

Surface Mount

8-SOIC (0.154", 3.90mm Width)

8-SOIC

DS1307ZN+T&R-Cut

DS1307ZN+T&R

1+	3.51961
10+	3.32549
25+	2.66
50+	2.52706
100+	2.32755

Increments of 1

Leadtime
2-3 weeks

IC RTC CLK/CALENDAR I2C 8-SOIC

Cut Tape (CT)

Active

Clock/Calendar

Leap Year, NVSRAM, Square Wave Output

56B

HH:MM:SS (12/24 hr)

YY-MM-DD-dd

I²C, 2-Wire Serial

4.5 V ~ 5.5 V

2 V ~ 3.5 V

200µA @ 5V

-40°C ~ 85°C

Surface Mount

8-SOIC (0.154", 3.90mm Width)

8-SOIC

DS1305EN+T&R-Cut

DS1305EN+T&R

1+	5.4902
10+	5.17549
25+	4.14
50+	3.93294
100+	3.62255

Increments of 1

Leadtime
2-3 weeks

IC RTC CLK/CALENDAR SPI 20-TSSOP

Cut Tape (CT)

Active

Clock/Calendar

Alarm, Leap Year, NVSRAM, Trickle-Charger

96B

HH:MM:SS (12/24 hr)

YY-MM-DD-dd

SPI

2 V ~ 5.5 V

25.3µA ~ 81µA @ 2V ~ 5V

-40°C ~ 85°C

Surface Mount

20-TSSOP (0.173", 4.40mm Width)

20-TSSOP

DS1302S+T&R-Cut

DS1302S+T&R

1+	3.31373
10+	3.12549
25+	2.5
50+	2.3751
100+	2.18755

Increments of 1

Leadtime
2-3 weeks

IC RTC CLK/CALENDAR SER 8-SOIC

Cut Tape (CT)

Active

Clock/Calendar

Leap Year, NVSRAM, Trickle-Charger

31B

HH:MM:SS (12/24 hr)

YY-MM-DD-dd

3-Wire Serial

2 V ~ 5.5 V

0.3µA ~ 1µA @ 2V ~ 5V

0°C ~ 70°C

Surface Mount

8-SOIC (0.209", 5.30mm Width)

8-SO

MCP7940N-I/P

1+	0.803922
25+	0.747451
100+	0.706863

Increments of 1

Leadtime
2-3 weeks

IC RTC CLK/CALENDAR I2C 8DIP

Tube

Active

Clock/Calendar

Alarm, Leap Year, Square Wave Output, SRAM

64B

HH:MM:SS (12/24 hr)

YY-MM-DD-dd

I²C, 2-Wire Serial

1.8 V ~ 5.5 V

1.3 V ~ 5.5 V

1.2µA @ 3.3V

-40°C ~ 85°C

Through Hole

8-DIP (0.300", 7.62mm)

8-PDIP

MCP7940N-E/SN

1+	0.803922
25+	0.747451
100+	0.706863

Increments of 1

Leadtime
2-3 weeks

IC RTC CLK/CALENDAR I2C 8-SOIC

Tube

Active

Clock/Calendar

Alarm, Leap Year, Square Wave Output, SRAM

64B

HH:MM:SS (12/24 hr)

YY-MM-DD-dd

I²C, 2-Wire Serial

1.8 V ~ 5.5 V

1.3 V ~ 5.5 V

1.2µA @ 3.3V

-40°C ~ 125°C

Surface Mount

8-SOIC (0.154", 3.90mm Width)

8-SOIC

DS1251WP-C02+

Leadtime
2-3 weeks

IC RTC PHANTOM PAR 34PWRCP

Active

Phantom Time Chip

Leap Year, NVSRAM

512KB

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

YY-MM-DD-dd

Parallel

2.97 V ~ 3.63 V

7mA @ 3.3V

0°C ~ 70°C

DS1251WP-C01+

Leadtime
2-3 weeks

IC RTC PHANTOM PAR 34PWRCP

Obsolete

Phantom Time Chip

Leap Year, NVSRAM

512KB

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

YY-MM-DD-dd

Parallel

2.97 V ~ 3.63 V

7mA @ 3.3V

0°C ~ 70°C

DS3232MZ/V+T

2500+

3.54

Increments of 2500

Leadtime
2-3 weeks

IC RTC CLK/CALENDAR I2C 8-SOIC

Tape & Reel (TR)

Automotive, AEC-Q100

Active

Clock/Calendar

Alarm, Leap Year, Square Wave Output, SRAM

236B

HH:MM:SS (12/24 hr)

YY-MM-DD-dd

I²C, 2-Wire Serial

2.3 V ~ 4.5 V

175µA @ 2.3V ~ 4.5V

-40°C ~ 85°C

Surface Mount

8-SOIC (0.154", 3.90mm Width)

8-SOIC

DS1318E+T&R

1000+

1.788

Increments of 1000

Leadtime
2-3 weeks

IC RTC ELAPSED CNT PAR 24-TSSOP

Tape & Reel (TR)

Active

Elapsed Time Counter

Alarm, Square Wave Output

Binary

Parallel

3 V ~ 3.6 V

1.6 V ~ 3.7 V

150µA @ 3V ~ 3.6V

-40°C ~ 85°C

Surface Mount

24-TSSOP (0.173", 4.40mm Width)

24-TSSOP

DS3232MZ/V+

1+	6.33333
10+	6.01667
25+	4.96078
50+	4.71275
250+	4.56376

Increments of 1

Leadtime
2-3 weeks

IC RTC CLK/CALENDAR I2C 8-SOIC

Tube

Automotive, AEC-Q100

Active

Clock/Calendar

Alarm, Leap Year, Square Wave Output, SRAM

236B

HH:MM:SS (12/24 hr)

YY-MM-DD-dd

I²C, 2-Wire Serial

2.3 V ~ 4.5 V

175µA @ 2.3V ~ 4.5V

-40°C ~ 85°C

Surface Mount

8-SOIC (0.154", 3.90mm Width)

8-SOIC

ISL1208IU8Z-T7A-Cut

ISL1208IU8Z-T7A

1+	3.18627
10+	2.8598
100+	2.34324

Increments of 1

Leadtime
2-3 weeks

IC RTC CLK/CALENDAR I2C 8-MSOP

Cut Tape (CT)

Active

Clock/Calendar

Alarm, Leap Year, SRAM

HH:MM:SS (12/24 hr)

YY-MM-DD-dd

I²C, 2-Wire Serial

2.7 V ~ 5.5 V

1.8 V ~ 5.5 V

4µA ~ 6µA @ 3V ~ 5V

-40°C ~ 85°C

Surface Mount

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

8-MSOP

ISL1208IB8Z-T7A-Cut

ISL1208IB8Z-T7A

1+	2.83333
10+	2.54216
100+	2.04333

Increments of 1

Leadtime
2-3 weeks

IC RTC CLK/CALENDAR I2C 8-SOIC

Cut Tape (CT)

Active

Clock/Calendar

Alarm, Leap Year, SRAM

HH:MM:SS (12/24 hr)

YY-MM-DD-dd

I²C, 2-Wire Serial

2.7 V ~ 5.5 V

1.8 V ~ 5.5 V

4µA ~ 6µA @ 3V ~ 5V

-40°C ~ 85°C

Surface Mount

8-SOIC (0.154", 3.90mm Width)

8-SOIC

ISL12026IBZ-T7A-Cut

ISL12026IBZ-T7A

1+	3.71569
10+	3.3402
100+	2.73706

Increments of 1

Leadtime
2-3 weeks

IC RTC CLK/CALENDAR I2C 8-SOIC

Cut Tape (CT)

Active

Clock/Calendar

Alarm, Leap Year

HH:MM:SS (12/24 hr)

YY-MM-DD-dd

I²C, 2-Wire Serial

2.7 V ~ 5.5 V

1.8 V ~ 5.5 V

10µA ~ 20µA @ 2.7V ~ 5.5V

-40°C ~ 85°C

Surface Mount

8-SOIC (0.154", 3.90mm Width)

8-SOIC

ISL12022IBZ-T7A-Cut

ISL12022IBZ-T7A

1+	5
10+	4.49412
100+	3.68225

Increments of 1

Leadtime
2-3 weeks

IC RTC CLK/CALENDAR I2C 8-SOIC

Cut Tape (CT)

Active

Clock/Calendar

Alarm, Daylight Savings, Leap Year, SRAM

128B

HH:MM:SS (12/24 hr)

YY-MM-DD-dd

I²C, 2-Wire Serial

2.7 V ~ 5.5 V

1.8 V ~ 5.5 V

14µA ~ 15µA @ 3V ~ 5V

-40°C ~ 85°C

Surface Mount

8-SOIC (0.154", 3.90mm Width)

8-SOIC

ISL12020MIRZ-T7A-Cut

ISL12020MIRZ-T7A

1+	6.97059
10+	6.29608
100+	5.21265

Increments of 1

Leadtime
2-3 weeks