Clock/Timing - Real Time Clocks

1,966 parts
Mfr Part # Qty Price Product Status 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
MCP7940MT-I/ST MCP7940MT-I/ST
IC RTC CLK/CALENDAR I2C 8-TSSOP
Microchip Technology
6,224 0.71000 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 1.8V ~ 5.5V - 1µA @ 5.5V -40°C ~ 85°C Surface Mount 8-TSSOP (0.173", 4.40mm Width) 8-TSSOP Details
BQ4285EP BQ4285EP
IC RTC CLK/CALENDAR PAR 24-DIP
Texas Instruments
2,866 5.16000 Obsolete Clock/Calendar Alarm, Daylight Savings, Leap Year, NVSRAM, Square Wave Output 114B HH:MM:SS (12/24 hr) YY-MM-DD-dd Parallel 4.5V ~ 5.5V 2.5V ~ 4V 300µA @ 5V 0°C ~ 70°C Through Hole 24-DIP (0.600", 15.24mm) 24-PDIP Details
BQ4845S-A4 BQ4845S-A4
IC RTC CLK/CALENDAR PAR 28-SOIC
Texas Instruments
9,657 4.64000 Obsolete Clock/Calendar Alarm, Daylight Savings, Leap Year, Supervisor, Watchdog Timer - HH:MM:SS (12/24 hr) YY-MM-DD-dd Parallel 4.75V ~ 5.5V 2.3V ~ 4V 1.5mA (Typ) @ 4.5 V ~ 5.5 V 0°C ~ 70°C Surface Mount 28-SOIC (0.295", 7.50mm Width) 28-SOIC Details
S-35190A-J8T1G S-35190A-J8T1G
IC RTC CLK/CALENDAR SER 8-SOP
ABLIC Inc.
4,514 0.73490 Not For New Designs Clock/Calendar Alarm, Leap Year - HH:MM:SS (12/24 hr) YY-MM-DD-dd 3-Wire Serial 1.3V ~ 5.5V - 0.93µA ~ 1.1µA @ 3V ~ 5V -40°C ~ 85°C Surface Mount 8-SOIC (0.154", 3.90mm Width) 8-SOP-J Details
DS1392U-18+ DS1392U-18+
IC RTC CLK/CALENDAR SER 10-USOP
Analog Devices Inc./Maxim Integrated
380 2.97000 Obsolete - - - - - - - - - - - - - Details
PCF2123TS/1,118 PCF2123TS/1,118
IC RTC CLK/CALENDAR SPI 14-TSSOP
NXP USA Inc.
4,023 1.42000 Active Clock/Calendar Alarm, Leap Year, Square Wave Output, Watchdog Timer - HH:MM:SS (12/24 hr) YY-MM-DD-dd SPI 1.6V ~ 5.5V - 0.33µA ~ 0.38µA @ 2V ~ 5V -40°C ~ 85°C Surface Mount 14-TSSOP (0.173", 4.40mm Width) 14-TSSOP Details
BQ3285EP BQ3285EP
IC RTC CLK/CALENDAR PAR 24-DIP
Texas Instruments
254 6.67000 Obsolete Clock/Calendar Alarm, Daylight Savings, Leap Year, NVSRAM, Square Wave Output 242B HH:MM:SS (12/24 hr) YY-MM-DD-dd Parallel 4.5V ~ 5.5V 2.5V ~ 4V 300µA @ 5V 0°C ~ 70°C Through Hole 24-DIP (0.600", 15.24mm) 24-PDIP Details
DS1302+ DS1302+
IC RTC CLK/CALENDAR SER 8-DIP
Analog Devices Inc./Maxim Integrated
1,547 5.60000 Active Clock/Calendar Leap Year, NVSRAM, Trickle-Charger 31B HH:MM:SS (12/24 hr) YY-MM-DD-dd 3-Wire Serial 2V ~ 5.5V 2V ~ 5.5V 0.3µA ~ 1µA @ 2V ~ 5V 0°C ~ 70°C Through Hole 8-DIP (0.300", 7.62mm) 8-PDIP Details
ISL1221IUZ-T ISL1221IUZ-T
IC RTC EVENT REC I2C 10-MSOP
Renesas Electronics America Inc
1,838 4.66000 Last Time Buy Time Event Recorder Alarm, Leap Year, SRAM 2B HH:MM:SS (12/24 hr) YY-MM-DD-dd I²C, 2-Wire Serial 2.7V ~ 5.5V 1.8V ~ 5.5V 4µA ~ 6µA @ 3V ~ 5V -40°C ~ 85°C Surface Mount 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) 10-MSOP Details
DS1672U-2+ DS1672U-2+
IC RTC BINARY CNT I2C 8-USOP
Analog Devices Inc./Maxim Integrated
325 4.03000 Obsolete Binary Counter Trickle-Charger - Binary Binary I²C, 2-Wire Serial 1.8V ~ 2.2V 1.3V ~ 3.63V 500µA @ 2.2V -40°C ~ 85°C Surface Mount 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) 8-uMAX/uSOP Details
DS17487-3+ DS17487-3+
IC RTC CLK/CALENDAR PAR 24-EDIP
Analog Devices Inc./Maxim Integrated
5,953 20.13024 Active Clock/Calendar Alarm, Daylight Savings, Leap Year, NVSRAM, Square Wave Output 4KB 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 Through Hole 24-DIP Module (0.600", 15.24mm) 24-EDIP Details
DS1339U-2+ DS1339U-2+
IC RTC CLK/CALENDAR I2C 8-USOP
Analog Devices Inc./Maxim Integrated
3,175 6.27000 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 1.8V ~ 5.5V 1.3V ~ 3.7V 100µA @ 2.2V -40°C ~ 85°C Surface Mount 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) 8-uMAX/uSOP Details
M41T81M6F M41T81M6F
IC RTC CLK/CALENDAR I2C 8-SOIC
STMicroelectronics
8,141 2.85000 Active Clock/Calendar Alarm, Leap Year, Square Wave Output, Watchdog Timer - HH:MM:SS:hh (24 hr) YY-MM-DD-dd I²C, 2-Wire Serial 2V ~ 5.5V 2.5V ~ 3.5V 100µA @ 2V ~ 5.5V -40°C ~ 85°C Surface Mount 8-SOIC (0.154", 3.90mm Width) 8-SOIC Details
DS1685S-3+ DS1685S-3+
IC RTC CLK/CALENDAR PAR 24-SOIC
Analog Devices Inc./Maxim Integrated
5,235 10.39000 Active Clock/Calendar Alarm, NVSRAM, Square Wave Output, Y2K 242B HH:MM:SS (12/24 hr) YY-MM-DD-dd Parallel 2.7V ~ 3.7V 2.5V ~ 3.7V 2mA @ 3V 0°C ~ 70°C Surface Mount 24-SOIC (0.295", 7.50mm Width) 24-SOIC Details
DS1339U-2+T&R DS1339U-2+T&R
IC RTC CLK/CALENDAR I2C 8-USOP
Analog Devices Inc./Maxim Integrated
6,168 3.16176 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 1.8V ~ 5.5V 1.3V ~ 3.7V 100µA @ 2.2V -40°C ~ 85°C Surface Mount 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) 8-uMAX/uSOP Details
M41T81SM6F M41T81SM6F
IC RTC CLK/CALENDAR I2C 8-SOIC
STMicroelectronics
9,806 2.68000 Active Clock/Calendar Alarm, Leap Year, Square Wave Output, Watchdog Timer - HH:MM:SS:hh (24 hr) YY-MM-DD-dd I²C, 2-Wire Serial 2.7V ~ 5.5V 2V ~ 3.5V 100µA @ 2.7V ~ 5.5V -40°C ~ 85°C Surface Mount 8-SOIC (0.154", 3.90mm Width) 8-SOIC Details
DS1374U-3+T&R DS1374U-3+T&R
IC RTC BINARY CNT I2C 10-USOP
Analog Devices Inc./Maxim Integrated
8,596 5.29000 Active Binary Counter Alarm, Square Wave Output, Trickle-Charger, Watchdog Timer - Binary Binary I²C, 2-Wire Serial 2.7V ~ 3.3V 1.3V ~ 3.7V 125µA @ 2.7V ~ 3.3V -40°C ~ 85°C Surface Mount 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) 10-uMAX/uSOP Details
DS1374U-33+T&R DS1374U-33+T&R
IC RTC BINARY CNT I2C 10-USOP
Analog Devices Inc./Maxim Integrated
2,750 5.29000 Active Binary Counter Alarm, Square Wave Output, Trickle-Charger, Watchdog Timer - Binary Binary I²C, 2-Wire Serial 2.97V ~ 5.5V 1.3V ~ 5.5V 175µA @ 2.97V ~ 5.5V -40°C ~ 85°C Surface Mount 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) 10-uMAX/uSOP Details
ISL12028IB27Z-T ISL12028IB27Z-T
RTC, VOLATILE
Intersil
212 4.29000 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 Details
DS1501WZN+T&R DS1501WZN+T&R
IC RTC CLK/CALENDAR PAR 28-SOIC
Analog Devices Inc./Maxim Integrated
1,000 17.51000 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 Details
DS1339BU+ DS1339BU+
IC RTC CLK/CALENDAR I2C 8-UMAX
Analog Devices Inc./Maxim Integrated
5,394 6.37000 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 1.71V ~ 5.5V 1.3V ~ 3.7V 200µA @ 1.71V ~ 5.5V -40°C ~ 85°C Surface Mount 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) 8-uMAX/uSOP Details
ISL12027IVZ-T ISL12027IVZ-T
RTC, NON-VOLATILE
Intersil
1,265 4.29000 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 8-TSSOP (0.173", 4.40mm Width) 8-TSSOP Details
DS3232S# DS3232S#
IC RTC CLK/CALENDAR I2C 20-SOIC
Analog Devices Inc./Maxim Integrated
8,286 12.76000 Active Clock/Calendar Alarm, Leap Year, Square Wave Output, SRAM, TCXO/Crystal 236B HH:MM:SS (12/24 hr) YY-MM-DD-dd I²C, 2-Wire Serial 2.3V ~ 5.5V 2.3V ~ 5.5V 120µA ~ 160µA @ 3.3V ~ 5.5V 0°C ~ 70°C Surface Mount 20-SOIC (0.295", 7.50mm Width) 20-SOIC Details
PCF8523TK/1,118 PCF8523TK/1,118
IC RTC CLK/CALENDAR I2C 8-HVSON
NXP USA Inc.
92,917 1.91000 Active Clock/Calendar Alarm, Leap Year, Watchdog Timer - HH:MM:SS (12/24 hr) YY-MM-DD-dd I²C, 2-Wire Serial 1.6V ~ 5.5V 1.8V ~ 5.5V 0.5µA @ 2V ~ 5V -40°C ~ 85°C Surface Mount 8-VDFN Exposed Pad 8-HVSON (4x4) Details

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