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
MCP79402T-I/SN IC RTC CLK/CALENDAR I2C 8-SOIC Microchip Technology	6,670	1.03500	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
DS1501YE+ IC RTC CLK/CALENDAR PAR 28-TSOP Analog Devices Inc./Maxim Integrated	1,238	6.97000	Obsolete	Clock/Calendar	Alarm, Leap Year, NVSRAM, Square Wave Output, Watchdog Timer, Y2K	256B	HH:MM:SS (24 hr)	YY-MM-DD-dd	Parallel	4.5V ~ 5.5V	2.5V ~ 3.7V	5mA @ 4.5V ~ 5.5V	0°C ~ 70°C	Surface Mount	28-TSSOP (0.465", 11.80mm Width)	28-TSOP	Details
DS1308U-33+ IC RTC CLK/CALENDAR I2C 8-UMAX Analog Devices Inc./Maxim Integrated	3,388	5.06000	Active	Clock/Calendar	Leap Year, NVSRAM, Square Wave Output	56B	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	3V ~ 5.5V	1.3V ~ 5.5V	125µA ~ 200µA @ 3V ~ 5.5V	-40°C ~ 85°C	Surface Mount	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)	8-uMAX/uSOP	Details
DS1392U-33+ IC RTC CLK/CALENDAR SER 10-USOP Analog Devices Inc./Maxim Integrated	3,540	4.66000	Active	Clock/Calendar	Alarm, Leap Year, Square Wave Output, Trickle-Charger	-	HH:MM:SS:hh (12/24 hr)	YY-MM-DD-dd	3-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
DS1501YZN+T&R IC RTC CLK/CALENDAR PAR 28-SOIC Analog Devices Inc./Maxim Integrated	5,615	8.83500	Active	Clock/Calendar	Alarm, Leap Year, NVSRAM, Square Wave Output, Watchdog Timer, Y2K	256B	HH:MM:SS (24 hr)	YY-MM-DD-dd	Parallel	4.5V ~ 5.5V	2.5V ~ 3.7V	5mA @ 4.5V ~ 5.5V	-40°C ~ 85°C	Surface Mount	28-SOIC (0.295", 7.50mm Width)	28-SOIC	Details
DS1557WP-120 IC RTC CLK/CALENDAR PAR 34-PCM Analog Devices Inc./Maxim Integrated	3,098	66.76000	Obsolete	Clock/Calendar	Alarm, Leap Year, NVSRAM, Watchdog Timer, Y2K	512KB	HH:MM:SS (24 hr)	YY-MM-DD-dd	Parallel	2.97V ~ 3.63V	3V	4mA @ 3.3V	0°C ~ 70°C	Surface Mount	34-PowerCap™ Module	34-PowerCap Module	Details
MCP7940MT-I/MNY IC RTC CLK/CALENDAR I2C 8-TDFN Microchip Technology	5,500	0.77000	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-WFDFN Exposed Pad	8-TDFN (2x3)	Details
ISL1208IB8Z IC RTC CLK/CALENDAR I2C 8-SOIC Renesas Electronics America Inc	8,693	3.03000	Active	Clock/Calendar	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	8-SOIC (0.154", 3.90mm Width)	8-SOIC	Details
DS1372U+T&R IC RTC BINARY CNT I2C 8-USOP Analog Devices Inc./Maxim Integrated	6,772	1.93500	Active	Binary Counter	Alarm, Square Wave Output, Watchdog Timer	-	Binary	Binary	I²C, 2-Wire Serial	2.4V ~ 5.5V	-	0.8µA @ 2.4V ~ 5.5V	-40°C ~ 85°C	Surface Mount	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)	8-uMAX/uSOP	Details
ISL1208IU8Z IC RTC CLK/CALENDAR I2C 8-MSOP Renesas Electronics America Inc	466	3.79000	Active	Clock/Calendar	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	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)	8-MSOP	Details
PCF85063ATT/AJ IC RTC CLK/CALENDAR I2C 8TSSOP NXP USA Inc.	63,078	1.06000	Active	Clock/Calendar	Alarm, Leap Year, Square Wave Output	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	0.9V ~ 5.5V	-	0.6µA @ 3.3V	-40°C ~ 85°C	Surface Mount	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)	8-TSSOP	Details
DS1248Y-70+ IC RTC PHANTOM PAR 32-DIP Analog Devices Inc./Maxim Integrated	6,681	40.36000	Active	Phantom Time Chip	NVSRAM	128KB	HH:MM:SS:hh (12/24 hr)	YY-MM-DD-dd	Parallel	4.5V ~ 5.5V	-	10mA @ 5V	0°C ~ 70°C	Through Hole	32-DIP Module (0.600", 15.24mm)	32-EDIP	Details
LV8572AN REAL TIME CLOCK, 0 TIMER(S) National Semiconductor	1,065	9.59000	Active	-	-	-	-	-	-	-	-	-	-	-	-	-	Details
RV5C348B-E2-F IC REAL TIME CLOCK 4 WIRE SERIAL Nisshinbo Micro Devices Inc.	2,637	1.75000	Active	Clock/Calendar	Alarm, Leap Year	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	4-Wire Serial	2V ~ 5.5V	-	1µA @ 3V	-40°C ~ 85°C	Surface Mount	10-LFSOP, 10-MSOP (0.110", 2.80mm Width)	10-SSOP-G	Details
DS1746-70+ IC RTC CLK/CALENDAR PAR 32-EDIP Analog Devices Inc./Maxim Integrated	246	39.06000	Active	Clock/Calendar	Leap Year, NVSRAM, Y2K	128KB	HH:MM:SS (24 hr)	YY-MM-DD-dd	Parallel	4.5V ~ 5.5V	-	4mA @ 5V	0°C ~ 70°C	Through Hole	32-DIP Module (0.600", 15.24mm)	32-EDIP	Details
PT7C4363BQ1WEX REAL TIME CLOCK SO-8 Diodes Incorporated	2,500	1.26000	Active	Clock/Calendar	Alarm	-	HH:MM:SS	YY-MM-DD-dd	I²C, SMBus	1.3V ~ 5.5V	3V	1.5µA @ 5V	-40°C ~ 125°C	Surface Mount	8-SOIC (0.154", 3.90mm Width)	8-SOIC	Details
BQ3285LDSSTR IC RTC CLK/CALENDAR PAR 24-QSOP Texas Instruments	35,845	2.72000	Obsolete	Clock/Calendar	Alarm, Daylight Savings, NVSRAM	242B	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	Parallel	2.7V ~ 5.5V	2.4V ~ 4V	100µA @ 3V	0°C ~ 70°C	Surface Mount	24-SSOP (0.154", 3.90mm Width)	24-SSOP	Details
BQ32002D IC RTC CAL I2C/2-WIRE SER 8SOIC Texas Instruments	4,860	1.66000	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	200µA @ 3.3V	-40°C ~ 85°C (TA)	Surface Mount	8-SOIC (0.154", 3.90mm Width)	8-SOIC	Details
PCF85063BTL/1,118 IC RTC CLK/CALENDAR SPI 10-HXSON NXP USA Inc.	3,376	0.99000	Active	Clock/Calendar	Alarm, Leap Year, Square Wave Output	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	SPI	0.9V ~ 5.5V	-	0.6µA @ 3.3V	-40°C ~ 85°C	Surface Mount	10-XFDFN Exposed Pad	10-DFN (2.6x2.6)	Details
DS1685EN-5+ IC RTC CLK/CALENDAR PAR 24-TSSOP Analog Devices Inc./Maxim Integrated	7,259	8.59000	Active	Clock/Calendar	Alarm, NVSRAM, Square Wave Output, Y2K	242B	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	Parallel	4.5V ~ 5.5V	2.5V ~ 3.7V	3mA @ 5V	-40°C ~ 85°C	Surface Mount	24-TSSOP (0.173", 4.40mm Width)	24-TSSOP	Details
BQ4845S-A4NTR IC RTC CLK/CALENDAR PAR 28-SOIC Texas Instruments	53,294	3.50000	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	-40°C ~ 85°C	Surface Mount	28-SOIC (0.295", 7.50mm Width)	28-SOIC	Details
DS1338Z-3+ IC RTC CLK/CALENDAR I2C 8-SOIC Analog Devices Inc./Maxim Integrated	1,085	4.66000	Active	Clock/Calendar	Leap Year, NVSRAM, Square Wave Output	56B	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	2.7V ~ 5.5V	1.3V ~ 3.7V	200µA @ 3.3V	-40°C ~ 85°C	Surface Mount	8-SOIC (0.154", 3.90mm Width)	8-SOIC	Details
RV-3149-C3-32.768KHZ-OPTION-A-TB-QA IC RTC CLK/CALENDAR SPI 10SON Micro Crystal AG	6,502	5.43000	Active	Clock/Calendar	Alarm, EEPROM, Leap Year, Programmable Clock Output, RAM, Temperature, Timer, Trickle Charger	2B, 8B	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	SPI, 4-Wire Serial	1.3V ~ 5.5V	-	1µA @ 3V	-40°C ~ 125°C (TA)	Surface Mount	10-VCDFN	10-SON (3.7x2.5)	Details
MCP795W22T-I/ST IC RTC CLK/CALENDAR SPI 14-TSSOP Microchip Technology	2,206	1.98000	Active	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	1.8V ~ 3.6V	1.3V ~ 3.6V	1µA @ 1.8V ~ 5.5V	-40°C ~ 85°C	Surface Mount	14-TSSOP (0.173", 4.40mm Width)	14-TSSOP	Details

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Clock/Timing - Real Time Clocks

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