Real Time Clocks

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Mfr. Part #	Availability	Price	Quantity	Datasheet	Series	Package/Case	Packaging	Product Status	Programmable	Type	Features	Memory Size	Time Format	Date Format	Interface	Voltage - Supply	Voltage - Supply, Battery	Current - Timekeeping (Max)	Operating Temperature	Mounting Type	Grade	Qualification	Supplier Device Package
DS1254YB-100 IC RTC PHANTOM CHIP PAR 168BGA Analog Devices Inc./Maxim Integrated	2,130	-	RFQ	Datasheet	-	168-BBGA Module	Bag	Obsolete	Not Verified	Phantom Time Chip	Leap Year, NVSRAM	2MB	HH:MM:SS:hh (12/24 hr)	YY-MM-DD-dd	Parallel	4.5V ~ 5.5V	3V	7mA @ 3.3V	0°C ~ 70°C	Surface Mount	-	-	168-BGA (40x40)
PCF2123BS/1,518 IC RTC CLK/CALENDAR SPI 16HVQFN NXP USA Inc.	4,733	-	RFQ	Datasheet	-	16-VFQFN Exposed Pad	Tape & Reel (TR)	Active	Not Verified	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	-	-	16-HVQFN (3x3)
RS5C372A-E2-F IC RTC CLK/CALENDAR I2C 8SSOP Nisshinbo Micro Devices Inc.	4,383	-	RFQ	Datasheet	-	8-LSSOP (0.173", 4.40mm Width)	Tape & Reel (TR)	Active	Not Verified	Clock/Calendar	Alarm, Leap Year	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I2C, 2-Wire Serial	1.7V ~ 6V	-	0.9µA ~ 2µA @ 3V ~ 6V	-40°C ~ 85°C	Surface Mount	-	-	8-SSOP
MAX31341CETB+T IC RTC CLK/CALENDAR I2C 10TDFN Analog Devices Inc./Maxim Integrated	4,277	-	RFQ	Datasheet	-	10-WFDFN Exposed Pad	Tape & Reel (TR)	Active	Not Verified	Clock/Calendar	Alarm, Leap Year, RAM, Square Wave Output, Trickle Charger	64B	HH:MM:SS (24 hr)	YY-MM-DD-dd	I2C	1.6V ~ 3.6V	1.6V ~ 3.6V	0.33µA ~ 0.39µA @ 1.6V ~ 3.6V	-40°C ~ 85°C	Surface Mount	-	-	10-TDFN (3x3)
DS1371U+ IC RTC BINARY COUNTER I2C 8UMAX Analog Devices Inc./Maxim Integrated	2,187	-	RFQ	Datasheet	-	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)	Tube	Active	Not Verified	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-uMAX/uSOP
RX-8564LC:B0 PURE SN IC RTC CLK/CALENDAR I2C 12VSOJ EPSON	1,946	-	RFQ	Datasheet	RX-8564LC	12-TFSOJ (0.094", 2.40mm Width)	Tape & Reel (TR)	Active	Not Verified	Clock/Calendar	Alarm, Leap Year	-	HH:MM:SS (24 hr)	YY-MM-DD-dd	I2C, 2-Wire Serial	1.8V ~ 5.5V	-	0.65µA ~ 0.8µA @ 2V ~ 5V	-40°C ~ 85°C	Surface Mount	-	-	12-VSOJ
DS1344E-3+T&R IC RTC CLK/CALENDAR SPI 20TSSOP Analog Devices Inc./Maxim Integrated	1,102	-	RFQ	Datasheet	-	20-TSSOP (0.173", 4.40mm Width)	Tape & Reel (TR)	Active	Not Verified	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
AB-RTCMC-32.768KHZ-B5ZE-S3-T IC RTC CLK/CALENDAR I2C MODULE Abracon LLC	1,949	-	RFQ	Datasheet	-	10-SMD Module	Tape & Reel (TR)	Active	Not Verified	Clock/Calendar	Alarm, Leap Year, Square Wave Output	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I2C, 2-Wire Serial	1.2V ~ 5.5V	1.8V ~ 5.5V	0.5µA @ 2V ~ 5V	-40°C ~ 85°C	Surface Mount	-	-	Module
DS1305EN+ IC RTC CLK/CALENDAR SPI 20TSSOP Analog Devices Inc./Maxim Integrated	1,442	-	RFQ	Datasheet	-	20-TSSOP (0.173", 4.40mm Width)	Tube	Active	Not Verified	Clock/Calendar	Alarm, Leap Year, NVSRAM, Trickle-Charger	96B	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	SPI	2V ~ 5.5V	2V ~ 5.5V	25.3µA ~ 81µA @ 2V ~ 5V	-40°C ~ 85°C	Surface Mount	-	-	20-TSSOP
DS3231SN#T&R IC RTC CLK/CALENDAR I2C 16SOIC Analog Devices Inc./Maxim Integrated	4,364	-	RFQ	Datasheet	-	16-SOIC (0.295", 7.50mm Width)	Tape & Reel (TR)	Active	Not Verified	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	-40°C ~ 85°C	Surface Mount	-	-	16-SOIC
M48T35-70PC1 IC RTC CLK/CALENDAR PAR 28DIP STMicroelectronics	4,493	-	RFQ	Datasheet	Timekeeper®	28-DIP Module (0.600", 15.24mm)	Tube	Active	Not Verified	Clock/Calendar	Leap Year	-	HH:MM:SS (24 hr)	YY-MM-DD-dd	Parallel	4.75V ~ 5.5V	-	2mA @ 4.75V ~ 5.5V	0°C ~ 70°C	Through Hole	-	-	28-PCDIP, CAPHAT®
MCP795W20-I/SL IC RTC CLK/CALENDAR SPI 14SOIC Microchip Technology	4,373	-	RFQ	Datasheet	-	14-SOIC (0.154", 3.90mm Width)	Tube	Active	Not Verified	Clock/Calendar	Alarm, EEPROM, Leap Year, Square Wave Output, SRAM, 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-SOIC
MAX31341BEWC+T IC RTC CLK/CALENDAR I2C 12WLP Analog Devices Inc./Maxim Integrated	3,861	-	RFQ	Datasheet	-	12-WFBGA, WLBGA	Tape & Reel (TR)	Active	Not Verified	Clock/Calendar	Alarm, Leap Year, Square Wave Output	64B	HH:MM:SS (24 hr)	YY-MM-DD-dd	I2C	1.6V ~ 3.6V	1.6V ~ 3.6V	0.33µA ~ 0.39µA @ 1.6V ~ 3.6V	-40°C ~ 85°C	Surface Mount	-	-	12-WLP (2.14x1.56)
DS3231MZ/V+T IC RTC CLK/CALENDAR I2C 8SOIC Analog Devices Inc./Maxim Integrated	3,386	-	RFQ	Datasheet	-	8-SOIC (0.154", 3.90mm Width)	Tape & Reel (TR)	Not For New Designs	Not Verified	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	Automotive	AEC-Q100	8-SOIC
M48T58Y-70PC1 IC RTC CLK/CALENDAR PAR 28-DIP STMicroelectronics	2,811	-	RFQ	Datasheet	Timekeeper®	28-DIP Module (0.600", 15.24mm)	Tube	Active	Not Verified	Clock/Calendar	Leap Year	-	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-PCDIP, CAPHAT®
M48T12-150PC1 IC RTC CLK/CALENDAR PAR 24DIP STMicroelectronics	2,900	-	RFQ	Datasheet	Timekeeper®	24-DIP Module (0.600", 15.24mm)	Tube	Active	Not Verified	Clock/Calendar	Leap Year	-	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	-	-	24-PCDIP, CAPHAT®
M48T58-70PC1 IC RTC CLK/CALENDAR PAR 28DIP STMicroelectronics	1,068	-	RFQ	Datasheet	Timekeeper®	28-DIP Module (0.600", 15.24mm)	Tube	Active	Not Verified	Clock/Calendar	Leap Year	-	HH:MM:SS (24 hr)	YY-MM-DD-dd	Parallel	4.75V ~ 5.5V	-	3mA @ 4.75V ~ 5.5V	0°C ~ 70°C	Through Hole	-	-	28-PCDIP, CAPHAT®
MCP7940M-I/ST IC RTC CLK/CALENDAR I2C 8TSSOP Microchip Technology	1,392	-	RFQ	Datasheet	-	8-TSSOP (0.173", 4.40mm Width)	Tube	Active	Not Verified	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
EM3028V3TP14B IC RTC CLK/CALENDAR I2C 14TSSOP EM Microelectronic	4,937	-	RFQ	Datasheet	-	14-TSSOP (0.173", 4.40mm Width)	Tape & Reel (TR)	Active	Not Verified	Clock/Calendar	Alarm, EEPROM, Leap Year, Square Wave Output, SRAM, Trickle-Charger	43B	HH:MM:SS:hh (12/24 hr)	YY-MM-DD-dd	I2C, 2-Wire Serial	1.1V ~ 5.5V	1.1V ~ 5.5V	0.4µA @ 5V	-40°C ~ 85°C	Surface Mount	-	-	14-TSSOP
M48T18-100PC1 IC RTC CLK/CALENDAR PAR 28DIP STMicroelectronics	3,641	-	RFQ	Datasheet	Timekeeper®	28-DIP Module (0.600", 15.24mm)	Tube	Active	Not Verified	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-PCDIP, CAPHAT®

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