Clock/Timing - Real Time Clocks

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 IC RTC CLK/CALENDAR I2C 28-SOIC STMicroelectronics	2,000	11.38000	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+ IC RTC CLK/CALENDAR PAR 32-EDIP Analog Devices Inc./Maxim Integrated	9,430	34.74000	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 IC RTC CLK/CALENDAR I2C 8-TSSOP Renesas Electronics America Inc	5,564	2.63860	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 IC RTC CLK/CAL I2C/SPI 16-SOIC NXP USA Inc.	5,354	5.68000	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 IC RTC CLK/CALENDAR I2C 8-MSOP Renesas Electronics America Inc	5,841	1.73680	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+ IC RTC BINARY CNT I2C 8-USOP Analog Devices Inc./Maxim Integrated	471	3.76000	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 IC RTC CLK/CAL I2C/SPI 20-SOIC NXP USA Inc.	3,189	6.20000	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 IC RTC CLK/CALENDAR PAR 32-DIP Texas Instruments	2,182	71.57000	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 IC RTC CLK/CALENDAR PAR 28-TSSOP Texas Instruments	4,610	4.67000	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+ 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 IC RTC CLK/CALENDAR I2C 8-TSSOP Microchip Technology	9,577	1.19000	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 IC RTC CLK/CALENDAR I2C 8-SOIC Texas Instruments	1,487	1.82000	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 IC RTC CLK/CALENDAR I2C 8-SOIC Analog Devices Inc./Maxim Integrated	4,701	2.37000	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+ IC RTC CLK/CALENDAR PAR 32-EDIP Analog Devices Inc./Maxim Integrated	3,483	41.49000	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 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 IC RTC CLK/CALENDAR I2C 18-SOX STMicroelectronics	2,358	5.71000	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 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 IC RTC CLK/CALENDAR I2C 8SO NXP USA Inc.	6,682	1.40000	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+ IC RTC CLK/CALENDAR SPI 10-USOP Analog Devices Inc./Maxim Integrated	5,699	4.66000	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 RTC, NON-VOLATILE Intersil	3,000	3.47000	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 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 IC RTC CLK/CALENDAR PAR 28DIP STMicroelectronics	3,643	28.16000	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 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 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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