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
M41ST87WMX6TR M41ST87WMX6TR
IC RTC CLK/CALENDAR I2C 28-SOIC
STMicroelectronics
2,000 9.49000 Active Clock/Calendar Alarm, Leap Year, NVSRAM, Square Wave Output, Supervisor, Watchdog Timer 128B HH:MM:SS:hh (24 hr) YY-MM-DD-dd I²C, 2-Wire Serial 2.7V ~ 3.6V 2.5V ~ 3.6V 0.5mA @ 2.7V ~ 3.6V -40°C ~ 85°C Surface Mount 28-SOIC (0.295", 7.50mm Width) 28-SO Details
DS1554W-120IND+ DS1554W-120IND+
IC RTC CLK/CALENDAR PAR 32-EDIP
Analog Devices Inc./Maxim Integrated
9,430 45.48000 Active Clock/Calendar Alarm, Leap Year, NVSRAM, Watchdog Timer, Y2K 32KB HH:MM:SS (24 hr) YY-MM-DD-dd Parallel 2.97V ~ 3.63V - 4mA @ 3.3V -40°C ~ 85°C Through Hole 32-DIP Module (0.600", 15.24mm) 32-EDIP Details
ISL12026AIVZ ISL12026AIVZ
IC RTC CLK/CALENDAR I2C 8-TSSOP
Renesas Electronics America Inc
5,564 3.96000 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 Details
PCF2127T/2Y PCF2127T/2Y
IC RTC CLK/CAL I2C/SPI 16-SOIC
NXP USA Inc.
5,354 4.99000 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 16-SOIC (0.295", 7.50mm Width) 16-SO Details
ISL12058IUZ-T ISL12058IUZ-T
IC RTC CLK/CALENDAR I2C 8-MSOP
Renesas Electronics America Inc
5,841 1.43069 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-TSSOP, 8-MSOP (0.118", 3.00mm Width) 8-MSOP Details
DS1371U+ DS1371U+
IC RTC BINARY CNT I2C 8-USOP
Analog Devices Inc./Maxim Integrated
471 4.92000 Active Binary Counter Alarm, Square Wave Output, Watchdog Timer - Binary Binary I²C, 2-Wire Serial 1.7V ~ 5.5V - 1.3µA @ 1.7V ~ 5.5V -40°C ~ 85°C Surface Mount 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) 8-uMAX/uSOP Details
PCF2129AT/2,518 PCF2129AT/2,518
IC RTC CLK/CAL I2C/SPI 20-SOIC
NXP USA Inc.
3,189 5.40000 Active Clock/Calendar Alarm, Leap Year, Square Wave Output, TCXO/Crystal, Watchdog Timer - 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 Details
BQ4850YMA-85N BQ4850YMA-85N
IC RTC CLK/CALENDAR PAR 32-DIP
Texas Instruments
2,182 88.29000 Obsolete Clock/Calendar Alarm - HH:MM:SS (24 hr) YY-MM-DD-dd Parallel 4.5V ~ 5.5V - 1mA @ 4.5V ~ 5.5V -40°C ~ 85°C Through Hole 32-DIP Module (0.61", 15.49mm) 32-DIP Module (18.42x52.96) Details
BQ4802LYPW BQ4802LYPW
IC RTC CLK/CALENDAR PAR 28-TSSOP
Texas Instruments
4,610 5.31180 Active Clock/Calendar Alarm, Daylight Savings, Leap Year, Supervisor, Watchdog Timer - HH:MM:SS (12/24 hr) YY-MM-DD-dd Parallel 2.7V ~ 3.6V 2.4V ~ 4V 1.5mA (Typ) @ 2.7 V ~ 3.6 V 0°C ~ 70°C Surface Mount 28-TSSOP (0.173", 4.40mm Width) 28-TSSOP Details
DS1251W-120+ DS1251W-120+
IC RTC PHANTOM PAR 32-DIP
Analog Devices Inc./Maxim Integrated
203 27.12000 Obsolete Phantom Time Chip Leap Year, NVSRAM 512KB HH:MM:SS:hh (12/24 hr) YY-MM-DD-dd Parallel 2.97V ~ 3.63V - 7mA @ 3.3V 0°C ~ 70°C Through Hole 32-DIP Module (0.600", 15.24mm) 32-EDIP Details
MCP79411-I/ST MCP79411-I/ST
IC RTC CLK/CALENDAR I2C 8-TSSOP
Microchip Technology
9,577 1.18000 Active Clock/Calendar Alarm, Leap Year, Square Wave Output, SRAM, Unique ID 64B, 1Kb HH:MM:SS (12/24 hr) YY-MM-DD-dd I²C, 2-Wire Serial 1.8V ~ 5.5V 1.3V ~ 5.5V 1.2µA @ 3.3V -40°C ~ 85°C Surface Mount 8-TSSOP (0.173", 4.40mm Width) 8-TSSOP Details
BQ32000D BQ32000D
IC RTC CLK/CALENDAR I2C 8-SOIC
Texas Instruments
1,487 2.33000 Active Clock/Calendar Leap Year, Square Wave Output, Trickle-Charger - HH:MM:SS (24 hr) YY-MM-DD-dd I²C, 2-Wire Serial 3V ~ 3.6V 1.4V ~ 3.6V 100µA @ 3.3V -40°C ~ 85°C Surface Mount 8-SOIC (0.154", 3.90mm Width) 8-SOIC Details
DS1340Z-3+T&R DS1340Z-3+T&R
IC RTC CLK/CALENDAR I2C 8-SOIC
Analog Devices Inc./Maxim Integrated
4,701 3.01817 Active Clock/Calendar Leap Year, Trickle-Charger - HH:MM:SS (24 hr) YY-MM-DD-dd I²C, 2-Wire Serial 2.7V ~ 5.5V 1.3V ~ 3.7V 125µA @ 3.3V -40°C ~ 85°C Surface Mount 8-SOIC (0.154", 3.90mm Width) 8-SOIC Details
DS1556W-120+ DS1556W-120+
IC RTC CLK/CALENDAR PAR 32-EDIP
Analog Devices Inc./Maxim Integrated
3,483 57.55000 Active Clock/Calendar Alarm, Leap Year, NVSRAM, Watchdog Timer, Y2K 128KB HH:MM:SS (24 hr) YY-MM-DD-dd Parallel 2.97V ~ 3.63V - 4mA @ 3.3V 0°C ~ 70°C Through Hole 32-DIP Module (0.600", 15.24mm) 32-EDIP Details
PT7C4311AWE PT7C4311AWE
IC RTC CAL I2C/2-WIRE SER 8SOIC
Diodes Incorporated
8,896 0.80560 Active Clock/Calendar Leap Year, Square Wave Output, Y2K 56B HH:MM:SS (24 hr) YY-MM-DD I²C, 2-Wire Serial 1.2V ~ 5.5V 2V ~ 3.5V 150µA @ 1.5V ~ 5.5V -40°C ~ 85°C (TA) Surface Mount 8-SOIC (0.154", 3.90mm Width) 8-SOIC Details
M41T83ZMY6F M41T83ZMY6F
IC RTC CLK/CALENDAR I2C 18-SOX
STMicroelectronics
2,358 6.63000 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 2.38V ~ 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 Details
RV-1805-C3-32.768KHZ-2PPM-TA-QC RV-1805-C3-32.768KHZ-2PPM-TA-QC
IC RTC CLK/CALENDAR I2C 10SON
Micro Crystal AG
4,108 2.53200 Not For New Designs Clock/Calendar Alarm, Programmable Clock Output, RAM, Timer, Trickle Charger, Watchdog Timer 256B HH:MM:SS:hh (12/24 hr) YY-MM-DD-dd I²C, 2-Wire Serial 1.5V ~ 3.6V - 0.08µA @ 3V -40°C ~ 85°C (TA) Surface Mount 10-VCDFN 10-SON (3.7x2.5) Details
PCF85263AT/AJ PCF85263AT/AJ
IC RTC CLK/CALENDAR I2C 8SO
NXP USA Inc.
6,682 1.17000 Active Clock/Calendar Alarm, Leap Year, Watchdog Timer - HH:MM:SS:hh (12/24 hr) YY-MM-DD-dd I²C, 2-Wire Serial 0.9V ~ 5.5V 0.9V ~ 5.5V 0.885µA @ 3.3V -40°C ~ 85°C Surface Mount 8-SOIC (0.154", 3.90mm Width) 8-SO Details
DS1391U-3+ DS1391U-3+
IC RTC CLK/CALENDAR SPI 10-USOP
Analog Devices Inc./Maxim Integrated
5,699 5.99000 Active Clock/Calendar Alarm, Leap Year, Square Wave Output, Trickle-Charger - HH:MM:SS:hh (12/24 hr) YY-MM-DD-dd SPI 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
ISL12027IB30AZ-T ISL12027IB30AZ-T
RTC, NON-VOLATILE
Intersil
3,000 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-SOIC (0.154", 3.90mm Width) 8-SOIC Details
MCP79400-I/SN MCP79400-I/SN
IC RTC CLK/CALENDAR I2C 8-SOIC
Microchip Technology
4,685 0.95000 Active Clock/Calendar Alarm, Leap Year, Square Wave Output, SRAM, Unique ID 64B HH:MM:SS (12/24 hr) YY-MM-DD-dd I²C, 2-Wire Serial 1.8V ~ 5.5V 1.3V ~ 5.5V 1.2µA (Typ) @ 3.3V -40°C ~ 85°C Surface Mount 8-SOIC (0.154", 3.90mm Width) 8-SOIC Details
M48T18-100PC1 M48T18-100PC1
IC RTC CLK/CALENDAR PAR 28DIP
STMicroelectronics
3,643 40.86000 Active Clock/Calendar Leap Year, Watchdog Timer - HH:MM:SS (24 hr) YY-MM-DD-dd Parallel 4.5V ~ 5.5V - 3mA @ 4.5V ~ 5.5V 0°C ~ 70°C Through Hole 28-DIP Module (0.600", 15.24mm) 28-PCDIP, CAPHAT® Details
MCP79401T-I/ST MCP79401T-I/ST
IC RTC CLK/CALENDAR I2C 8-TSSOP
Microchip Technology
8,313 1.09500 Active Clock/Calendar Alarm, Leap Year, Square Wave Output, SRAM, Unique ID 64B HH:MM:SS (12/24 hr) YY-MM-DD-dd I²C, 2-Wire Serial 1.8V ~ 5.5V 1.3V ~ 5.5V 1.2µA (Typ) @ 3.3V -40°C ~ 85°C Surface Mount 8-TSSOP (0.173", 4.40mm Width) 8-TSSOP Details
DS14285N DS14285N
IC RTC CLK/CALENDAR PAR 24-DIP
Analog Devices Inc./Maxim Integrated
2,303 4.68000 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 ~ 3.6V 0.5µA @ 4.5V ~ 5.5V -40°C ~ 85°C Through Hole 24-DIP (0.600", 15.24mm) 24-PDIP Details

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