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
DS2404S-001 IC RTC BINARY CTR 1-WIRE 16SOIC Analog Devices Inc./Maxim Integrated	3,547	-	RFQ	Datasheet	EconoRAM	16-SOIC (0.295", 7.50mm Width)	Tube	Obsolete	Not Verified	Binary Counter	Alarm, Square Wave Output, SRAM	512B	Binary	Binary	1-Wire® and 3-Wire	2.8V ~ 5.5V	2.8V ~ 5.5V	500µA @ 5V	-40°C ~ 85°C	Surface Mount	-	-	16-SOIC
M41T56C64MY6F IC RTC CLK/CALENDAR I2C 18SOX STMicroelectronics	4,121	-	RFQ	Datasheet	-	18-SOX, 18-SOIC with Crystal (7.5mm Width)	Tape & Reel (TR)	Obsolete	Not Verified	Clock/Calendar	EEPROM, Leap Year, NVSRAM	56B, 8KB	HH:MM:SS	YY-MM-DD-dd	I2C, 2-Wire Serial	4.5V ~ 5.5V	2.5V ~ 3.5V	100µA (Typ) @ 4.5V ~ 5.5V	-40°C ~ 85°C	Surface Mount	-	-	18-SOX
BQ4802LYDSH IC RTC CLK/CALENDAR PAR 28SOP Texas Instruments	4,963	-	RFQ	Datasheet	-	28-SOIC (0.345", 8.77mm Width) with SNAPHAT Sockets	Tube	Obsolete	Not Verified	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-SOP
RTC-4701NB:B3 ROHS IC RTC CLK/CALENDAR SER 22SON EPSON	3,452	-	RFQ	Datasheet	-	22-LFDFN	Tape & Reel (TR)	Obsolete	Not Verified	Clock/Calendar	Alarm, Leap Year	-	HH:MM:SS (24 hr)	YY-MM-DD-dd	3-Wire Serial	1.6V ~ 5.5V	-	-	-40°C ~ 85°C	Surface Mount	-	-	22-SON (6.3x4.8)
RX-4574LC:B3 PURE SN IC RTC CLK/CALENDAR SER 12VSOJ EPSON	1,373	-	RFQ	Datasheet	RX-4581NB	12-TFSOJ (0.094", 2.40mm Width)	Tape & Reel (TR)	Obsolete	Not Verified	Clock/Calendar	Alarm, Leap Year	-	HH:MM:SS (24 hr)	YY-MM-DD-dd	3-Wire Serial	1.6V ~ 5.5V	-	0.7µA ~ 0.9µA @ 3V ~ 5V	-40°C ~ 85°C	Surface Mount	-	-	12-VSOJ
DS1685S-3+T&R IC RTC CLK/CALENDAR PAR 24SOIC Analog Devices Inc./Maxim Integrated	3,510	-	RFQ	Datasheet	-	24-SOIC (0.295", 7.50mm Width)	Tape & Reel (TR)	Active	Not Verified	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-SOIC
DS1685E-5+T&R IC RTC CLK/CALENDAR PAR 24TSSOP Analog Devices Inc./Maxim Integrated	4,430	-	RFQ	Datasheet	-	24-TSSOP (0.173", 4.40mm Width)	Tape & Reel (TR)	Active	Not Verified	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	0°C ~ 70°C	Surface Mount	-	-	24-TSSOP
DS1685E-3+T&R IC RTC CLK/CALENDAR PAR 24TSSOP Analog Devices Inc./Maxim Integrated	2,620	-	RFQ	Datasheet	-	24-TSSOP (0.173", 4.40mm Width)	Tape & Reel (TR)	Active	Not Verified	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
RA-4565SA:B3 ROHS IC RTC CLK/CALENDAR SER 14SOP EPSON	2,811	-	RFQ	Datasheet	-	14-SOIC (0.197", 5.00mm Width)	Tape & Reel (TR)	Obsolete	Not Verified	Clock/Calendar	Alarm, Leap Year	-	HH:MM:SS (24 hr)	YY-MM-DD-dd	4-Wire Serial	1.6V ~ 5.5V	-	1.6µA ~ 2µA @ 3V ~ 5V	-40°C ~ 125°C	Surface Mount	Automotive	AEC-Q200	14-SOP
DS1501WN IC RTC CLK/CALENDAR PAR 28DIP Analog Devices Inc./Maxim Integrated	1,197	-	RFQ	Datasheet	-	28-DIP (0.600", 15.24mm)	Tube	Obsolete	Not Verified	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	-40°C ~ 85°C	Through Hole	-	-	28-PDIP
DS1501YN IC RTC CLK/CALENDAR PAR 28DIP Analog Devices Inc./Maxim Integrated	4,552	-	RFQ	Datasheet	-	28-DIP (0.600", 15.24mm)	Tube	Obsolete	Not Verified	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	Through Hole	-	-	28-PDIP
RX-4571LCB PURE SN RX-4571LC:B RTC {SN-AG OR SN} VS EPSON	2,169	-	RFQ	Datasheet	RX-4571LC	12-TFSOJ (0.094", 2.40mm Width)	Bulk	Active	-	Clock/Calendar	Alarm, Leap Year	-	HH:MM:SS	YY-MM-DD	3-Wire Serial	1.6V ~ 5.5V	1V ~ 5.5V	950nA ~ 1µA @ 3V ~ 5V	-40°C ~ 85°C	Surface Mount	-	-	12-VSOJ
RX-8571LC:B PURE SN 5+/-23PPM RTC BULK - CUT TAPE EPSON	4,188	-	RFQ	Datasheet	RX-8571LC	12-TFSOJ (0.094", 2.40mm Width)	Bulk	Active	-	Clock/Calendar	Alarm, RAM	16B	HH:MM:SS	YY-MM-DD	I2C	1.6V ~ 5.5V	1.3V ~ 5.5V	0.4µA @ 3V	-40°C ~ 85°C	Surface Mount	-	-	12-VSOJ
MAX6902ETA+T IC RTC CLK/CALENDAR SPI 8TDFN Analog Devices Inc./Maxim Integrated	1,436	-	RFQ	Datasheet	-	8-WDFN Exposed Pad	Tape & Reel (TR)	Obsolete	Not Verified	Clock/Calendar	Alarm, Leap Year, NVSRAM, Y2K	31B	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	SPI	2V ~ 5.5V	-	1.05µA ~ 4.2µA @ 2V ~ 5V	-40°C ~ 85°C	Surface Mount	-	-	8-TDFN (3x3)
RX-4803SA:UAB PURE SN IC RTC CLK/CALENDAR SPI 14SOP EPSON	1,615	-	RFQ	Datasheet	RX-4803SA	14-SOIC (0.197", 5.00mm Width)	Tube	Active	Not Verified	Clock/Calendar	Alarm, Leap Year	-	HH:MM:SS (24 hr)	YY-MM-DD-dd	SPI	1.6V ~ 5.5V	-	2.1µA ~ 3.4µA @ 3V ~ 5V	-40°C ~ 85°C	Surface Mount	-	-	14-SOP
RX-8803SA:UA PURE SN IC RTC CLK/CALENDAR I2C 14SOP EPSON	2,767	-	RFQ	Datasheet	RX-8803SA	14-SOIC (0.197", 5.00mm Width)	Tube	Active	Not Verified	Clock/Calendar	Alarm	-	HH:MM:SS	YY-MM-DD	I2C	1.6V ~ 5.5V	-	2.1µA ~ 3.4µA @ 3V ~ 5V	-40°C ~ 85°C	Surface Mount	-	-	14-SOP
M41T00SC64MY6F IC RTC CLK/CALENDAR I2C 18SOX STMicroelectronics	3,992	-	RFQ	Datasheet	-	18-SOX, 18-SOIC with Crystal (7.5mm Width)	Tape & Reel (TR)	Obsolete	Not Verified	Clock/Calendar	EEPROM, Leap Year	8KB	HH:MM:SS	YY-MM-DD-dd	I2C, 2-Wire Serial	2.7V ~ 5.5V	2.5V ~ 35V	100µA (Typ) @ 2.7V ~ 5.5V	-40°C ~ 85°C	Surface Mount	-	-	18-SOX
DS2404B IC RTC BINARY CTR 1-WIRE 16SSOP Analog Devices Inc./Maxim Integrated	2,657	-	RFQ	Datasheet	EconoRAM	16-SSOP (0.209", 5.30mm Width)	Tube	Obsolete	Not Verified	Binary Counter	Alarm, Square Wave Output, SRAM	512B	Binary	Binary	1-Wire® and 3-Wire	2.8V ~ 5.5V	2.8V ~ 5.5V	500µA @ 5V	-40°C ~ 85°C	Surface Mount	-	-	16-SSOP
DS1501WE/T&R IC RTC CLK/CALENDAR PAR 28TSOP Analog Devices Inc./Maxim Integrated	4,310	-	RFQ	Datasheet	-	28-TSSOP (0.465", 11.80mm Width)	Tape & Reel (TR)	Obsolete	Not Verified	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	Surface Mount	-	-	28-TSOP
DS1685-5IND+ IC RTC CLK/CALENDAR PAR 24DIP Analog Devices Inc./Maxim Integrated	4,580	-	RFQ	Datasheet	-	24-DIP (0.600", 15.24mm)	Tube	Obsolete	Not Verified	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	Through Hole	-	-	24-PDIP

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Yes. Our sourcing team can review shortage and obsolete-part requirements and help check available supply channels or possible alternatives when appropriate.

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