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
PT7C4307WEX IC RTC CLK/CALENDAR I2C 8-SOIC Diodes Incorporated	6,286	2.11000	Active	Clock/Calendar	Alarm, Leap Year, NVSRAM, Square Wave Output	56B	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	4.5V ~ 5.5V	2V ~ 3.5V	1.5mA @ 4.5V ~ 5.5V	-40°C ~ 85°C	Surface Mount	8-SOIC (0.154", 3.90mm Width)	8-SOIC	Details
ISL1221IUZ IC RTC EVENT REC I2C 10-MSOP Renesas Electronics America Inc	6	4.14000	Obsolete	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
DS1685E-3+T&R IC RTC CLK/CALENDAR PAR 24-TSSOP Analog Devices Inc./Maxim Integrated	7,266	5.84259	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-TSSOP (0.173", 4.40mm Width)	24-TSSOP	Details
DS1511W+ IC RTC CLK/CALENDAR PAR 28-EDIP Analog Devices Inc./Maxim Integrated	2,636	30.50000	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	0°C ~ 70°C	Through Hole	28-DIP Module (0.600", 15.24mm)	28-EDIP	Details
PT7C4337ACSE IC RTC CLK/CALENDAR I2C Diodes Incorporated	120	4.53375	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	-	0.8µA @ 1.3V ~ 1.8V	-40°C ~ 85°C	Surface Mount	16-SOIC (0.295", 7.50mm Width)	16-SOIC	Details
DS1315SN-5 IC RTC PHANTOM PAR 16-SOIC Analog Devices Inc./Maxim Integrated	205	9.67500	Obsolete	Phantom Time Chip	Leap Year	-	HH:MM:SS:hh (12/24 hr)	YY-MM-DD-dd	Parallel	4.5V ~ 5.5V	2.5V ~ 3.7V	1.3mA @ 5V	-40°C ~ 85°C	Surface Mount	16-SOIC (0.295", 7.50mm Width)	16-SOIC	Details
DS1344E-3+ IC RTC CLK/CALENDAR SPI 20-TSSOP Analog Devices Inc./Maxim Integrated	5,302	4.81169	Active	Clock/Calendar	Alarm, Leap Year, NVRAM, Square Wave Output, Trickle Charger	96B	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	SPI	2.7V ~ 5.5V	1.3V ~ 5.5V	-	-40°C ~ 85°C	Surface Mount	20-TSSOP (0.173", 4.40mm Width)	20-TSSOP	Details
MCP79521T-I/MN IC RTC CLK/CALENDAR SPI 10-TDFN Microchip Technology	3,328	1.30000	Active	Clock/Calendar	Alarm, EEPROM, Leap Year, Square Wave Output, SRAM, Unique ID	64B	HH:MM:SS:hh (12/24 hr)	YY-MM-DD-dd	SPI	1.8V ~ 3.6V	1.3V ~ 3.6V	1µA @ 1.8V ~ 3.6V	-40°C ~ 85°C	Surface Mount	10-WFDFN Exposed Pad	10-TDFN (3x3)	Details
DS1343E-3+T&R IC RTC CLK/CALENDAR SPI 20-TSSOP Analog Devices Inc./Maxim Integrated	1,561	6.39000	Active	Clock/Calendar	Alarm, Leap Year, NVRAM, Square Wave Output, Trickle Charger	96B	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	SPI	2.7V ~ 5.5V	1.3V ~ 5.5V	-	-40°C ~ 85°C	Surface Mount	20-TSSOP (0.173", 4.40mm Width)	20-TSSOP	Details
DS1646-120 IC RTC CLK/CALENDAR PARAL 32EDIP Analog Devices Inc./Maxim Integrated	5,978	31.32273	Obsolete	Clock/Calendar	Leap Year, NVSRAM	128KB	HH:MM:SS (24 hr)	YY-MM-DD-dd	Parallel	4.5V ~ 5.5V	3V	4mA @ 4.5 V ~ 5.5 V	0°C ~ 70°C	Through Hole	32-DIP Module (0.600", 15.24mm)	32-EDIP	Details
DS3231MZ+TRL IC RTC CLK/CALENDAR I2C 8-SOIC Analog Devices Inc./Maxim Integrated	7,383	8.73000	Active	Clock/Calendar	Alarm, Leap Year, Square Wave Output	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	2.3V ~ 5.5V	2.3V ~ 5.5V	130µA ~ 200µA @ 3.63V ~ 5.5V	-40°C ~ 85°C	Surface Mount	8-SOIC (0.154", 3.90mm Width)	8-SOIC	Details
DS1244WP-120IND+ IC RTC PHANTOM PAR 34-PCM Analog Devices Inc./Maxim Integrated	88	23.72025	Obsolete	Phantom Time Chip	Leap Year, NVSRAM	32KB	HH:MM:SS:hh (12/24 hr)	YY-MM-DD-dd	Parallel	2.97V ~ 3.63V	3V	7mA @ 3.3V	-40°C ~ 85°C	Surface Mount	34-PowerCap™ Module	34-PowerCap Module	Details
BQ4802YDSH IC RTC CLK/CALENDAR PAR 28-SOP Texas Instruments	1,479	5.80086	Obsolete	Clock/Calendar	Alarm, Daylight Savings, Leap Year, Supervisor, Watchdog Timer	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	Parallel	4.5V ~ 5.5V	2.4V ~ 4V	1.5mA (Typ) @ 4.5 V ~ 5.5 V	0°C ~ 70°C	Surface Mount	28-SOIC (0.345", 8.77mm Width) with SNAPHAT Sockets	28-SOP	Details
DS1248YP-70+ IC RTC PHANTOM PAR 34-PCM Analog Devices Inc./Maxim Integrated	1,733	47.96000	Active	Phantom Time Chip	NVSRAM	128KB	HH:MM:SS:hh (12/24 hr)	YY-MM-DD-dd	Parallel	4.5V ~ 5.5V	3V	10mA @ 5V	0°C ~ 70°C	Surface Mount	34-PowerCap™ Module	34-PowerCap Module	Details
DS1747W-120IND+ IC RTC CLK/CALENDAR PAR 32-EDIP Analog Devices Inc./Maxim Integrated	85	68.25000	Active	Clock/Calendar	Leap Year, NVSRAM, Y2K	512KB	HH:MM:SS (24 hr)	YY-MM-DD-dd	Parallel	2.97V ~ 3.63V	-	2mA @ 3.3V	-40°C ~ 85°C	Through Hole	32-DIP Module (0.600", 15.24mm)	32-EDIP	Details
CDP6818D CMOS REAL-TIME CLOCK WITH RAM Harris Corporation	115	13.88000	Active	Clock/Calendar	Alarm, Leap Year, Square Wave Output	50B	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	-	3V ~ 6V	-	50µA ~ 3mA @ 3V ~ 5V	0°C ~ 70°C (TA)	Through Hole	24-CDIP (0.300", 7.62mm)	24-CERDIP	Details
DS1339C-3 DS1339 I2C SERIAL RTC Analog Devices Inc./Maxim Integrated	6,085	3.14000	Active	-	-	-	-	-	-	-	-	-	-	-	-	-	Details
DS1307N+ IC RTC CLK/CALENDAR I2C 8-DIP Analog Devices Inc./Maxim Integrated	1,670	5.96000	Active	Clock/Calendar	Leap Year, NVSRAM, Square Wave Output	56B	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	4.5V ~ 5.5V	2V ~ 3.5V	200µA @ 5V	-40°C ~ 85°C	Through Hole	8-DIP (0.300", 7.62mm)	8-PDIP	Details
PCF85363ATT/AJ IC RTC CLK/CALENDAR I2C 8TSSOP NXP USA Inc.	3,628	1.32000	Active	Clock/Calendar	Alarm, Leap Year, Watchdog Timer	64B	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-TSSOP, 8-MSOP (0.118", 3.00mm Width)	8-TSSOP	Details
RV-3028-C7 32.768KHZ 1PPM-TA-QA IC RTC CLK/CALENDAR I2C 8SON Micro Crystal AG	188	2.64000	Active	Clock/Calendar	Alarm, Battery Switch, EEPROM, External Event Interrupt, Leap Year, Programmable Clock Output, RAM, Timer, Trickle Charger	2B, 43B	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	1.1V ~ 5.5V	-	0.06µA @ 3V	-40°C ~ 85°C (TA)	Surface Mount	8-WCDFN	8-SON (3.2x1.5)	Details
DS3231S#T&R IC RTC CLK/CALENDAR I2C 16-SOIC Analog Devices Inc./Maxim Integrated	5,881	11.29000	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	2.3V ~ 5.5V	2.3V ~ 5.5V	110µA ~ 170µA @ 3.63V ~ 5.5V	0°C ~ 70°C	Surface Mount	16-SOIC (0.295", 7.50mm Width)	16-SOIC	Details
DS12885Q+ IC RTC CLK/CALENDAR PAR 28-PLCC Analog Devices Inc./Maxim Integrated	1,847	12.74000	Active	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	15mA @ 4.5V ~ 5.5V	0°C ~ 70°C	Surface Mount	28-LCC (J-Lead)	28-PLCC (11.51x11.51)	Details
DS17285S-3/T&R IC RTC CLK/CALENDAR PAR 24-SOIC Analog Devices Inc./Maxim Integrated	1,000	5.02000	Obsolete	Clock/Calendar	Alarm, Daylight Savings, Leap Year, NVSRAM, Square Wave Output	2KB	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	Details
DS1344D-18+ IC RTC CLK/CAL SPI 14TDFN Analog Devices Inc./Maxim Integrated	7,171	3.68605	Active	Clock/Calendar	Alarm, Leap Year, NVRAM, Square Wave Output, Trickle Charger	96B	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	SPI	1.71V ~ 5.5V	1.3V ~ 5.5V	-	-40°C ~ 85°C	Surface Mount	14-WFDFN Exposed Pad	14-TDFN (3x3)	Details

Clock/Timing - Real Time Clocks

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