Clock/Timing - Real Time Clocks

Category Introduction

Real Time Clocks (RTCs) provide time and/or date information in almost any electronic device which needs to keep accurate time. The clock types are binary counter, clock/calendar/supervisor, elapsed time counter, phantom time chip, portable system controller, temperature recorder, time event recorder, and timer clock peripheral. They contain memory sizes ranging from 2 B to 2 MB and have interface options of I2C, Parallel, Serial, SPI, 1-Wire, 2-Wire, 3-Wire, and 4-Wire.

Product List

2231 Items

PDF	Mfr Part #	Quantity Available	UnitPrice	RFQ	Series	Packaging	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
	1338-31DVGI IC RTC CLK/CALENDAR I2C 8-TSSOP Renesas Electronics America Inc	171	$3.33			Tube	Active	Clock/Calendar	Leap Year, NVSRAM, Square Wave Output	56B	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	3.3V ~ 5.5V	1.3V ~ 3.7V	5µA @ 3.63V ~ 5.5V	-40°C ~ 85°C	Surface Mount	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)	8-MSOP
	M41T56M6F IC RTC CLK/CALENDAR I2C 8-SOIC STMicroelectronics	237	$3.52			Tape & Reel (TR)	Active	Clock/Calendar	Leap Year, NVSRAM	56B	HH:MM:SS (24 hr)	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	8-SOIC (0.154", 3.90mm Width)	8-SOIC
	M41T82SM6F IC RTC CLK/CALENDAR I2C 8-SOIC STMicroelectronics	235	$3.70			Tape & Reel (TR)	Active	Clock/Calendar	Alarm, Leap Year, SRAM, Watchdog Timer	7B	HH:MM:SS:hh (24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	3V ~ 5.5V	2V ~ 5.5V	10µA @ 5.5V	-40°C ~ 85°C	Surface Mount	8-SOIC (0.154", 3.90mm Width)	8-SOIC
	BQ3285P-SB2 IC RTC CLK/CALENDAR PAR 24-DIP Texas Instruments	43	$4.21			Tube	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 ~ 4V	-	0°C ~ 70°C	Through Hole	24-DIP (0.600", 15.24mm)	24-PDIP
	M41T93ZQA6F IC RTC CLK/CALENDAR SPI 16-QFN STMicroelectronics	97	$4.59			Tape & Reel (TR)	Active	Clock/Calendar	Alarm, Leap Year, Square Wave Output, SRAM, Watchdog Timer	7B	HH:MM:SS:hh (24 hr)	YY-MM-DD-dd	SPI	2.38V ~ 5.5V	1.8V ~ 5.5V	10µA @ 5.5V	-40°C ~ 85°C	Surface Mount	16-VQFN Exposed Pad	16-QFN (4x4)
	DS12R885S-5+ IC RTC CLK/CALENDAR PAR 24-SOIC Analog Devices Inc./Maxim Integrated	181	$5.06			Tube	Active	Clock/Calendar	Alarm, Leap Year, NVSRAM, Square Wave Output, Trickle-Charger	114B	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	Parallel	4.5V ~ 5.5V	2V ~ 3.05V	2mA @ 4.5V ~ 5.5V	-40°C ~ 85°C	Surface Mount	24-SOIC (0.295", 7.50mm Width)	24-SOIC
	M41T93RMY6F IC RTC CLK/CALENDAR SPI 18-SOX STMicroelectronics	115	$5.68			Tape & Reel (TR)	Active	Clock/Calendar	Alarm, Leap Year, Square Wave Output, SRAM, Watchdog Timer	7B	HH:MM:SS:hh (24 hr)	YY-MM-DD-dd	SPI	2.7V ~ 5.5V	1.8V ~ 5.5V	10µA @ 5.5V	-40°C ~ 85°C	Surface Mount	18-SOX, 18-SOIC with Crystal (7.5mm Width)	18-SOX
	M41T93SMY6F IC RTC CLK/CALENDAR SPI 18-SOX STMicroelectronics	168	$5.53			Tape & Reel (TR)	Active	Clock/Calendar	Alarm, Leap Year, Square Wave Output, SRAM, Watchdog Timer	7B	HH:MM:SS:hh (24 hr)	YY-MM-DD-dd	SPI	3V ~ 5.5V	1.8V ~ 5.5V	10µA @ 5.5V	-40°C ~ 85°C	Surface Mount	18-SOX, 18-SOIC with Crystal (7.5mm Width)	18-SOX
	M41T93ZMY6F IC RTC CLK/CALENDAR SPI 18-SOX STMicroelectronics	41	$5.56			Tape & Reel (TR)	Active	Clock/Calendar	Alarm, Leap Year, Square Wave Output, SRAM, Watchdog Timer	7B	HH:MM:SS:hh (24 hr)	YY-MM-DD-dd	SPI	2.38V ~ 5.5V	1.8V ~ 5.5V	10µA @ 5.5V	-40°C ~ 85°C	Surface Mount	18-SOX, 18-SOIC with Crystal (7.5mm Width)	18-SOX
	M41T83SMY6F IC RTC CLK/CALENDAR I2C 18-SOX STMicroelectronics	128	$5.59			Tape & Reel (TR)	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	3V ~ 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
	ISL12022MIBZ-T IC RTC/CALENDAR TEMP SNSR 20SOIC Renesas Electronics America Inc	91	$7.66			Tape & Reel (TR)	Active	Clock/Calendar	Alarm, Daylight Savings, Leap Year, SRAM	128B	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	2.7V ~ 5.5V	1.8V ~ 5.5V	14µA ~ 15µA @ 3V ~ 5V	-40°C ~ 85°C	Surface Mount	20-SOIC (0.295", 7.50mm Width)	20-SOIC
	BQ4802YPW IC RTC CLK/CALENDAR PAR 28-TSSOP Texas Instruments	76	$9.70			Tube	Active	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-TSSOP (0.173", 4.40mm Width)	28-TSSOP
	M41T315V-85MH6F IC RTC PHANTOM SER 28-SOIC STMicroelectronics	64	$11.08			Tape & Reel (TR)	Obsolete	Phantom Time Chip	Leap Year, Supervisor	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	Serial	3V ~ 3.6V	2.5V ~ 3.7V	2mA @ 2.7V ~ 3.6V	-40°C ~ 85°C	Surface Mount	28-SOP (0.350", 8.89mm Width) with SNAPHAT Sockets	28-SOH
	DS1315EN-33+ IC RTC PHANTOM PAR 20-TSSOP Analog Devices Inc./Maxim Integrated	37	$20.89			Tube	Active	Phantom Time Chip	Leap Year	-	HH:MM:SS:hh (12/24 hr)	YY-MM-DD-dd	Parallel	3V ~ 3.6V	2.5V ~ 3.7V	1.1mA @ 3.3V	-40°C ~ 85°C	Surface Mount	20-TSSOP (0.173", 4.40mm Width)	20-TSSOP
	M48T37Y-70MH1F IC RTC CLK/CALENDAR PAR 44-SOH STMicroelectronics	6	$21.71		Timekeeper®	Tape & Reel (TR)	Active	Clock/Calendar	Alarm, 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	Surface Mount	44-BSOP (0.337", 8.56mm Width) requires SNAPHAT	44-SOH
	M48T37Y-70MH1E IC RTC CLK/CALENDAR PAR 44-SOH STMicroelectronics	106	$0.00		Timekeeper®	Tube	Obsolete	Clock/Calendar	Alarm, 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	Surface Mount	44-BSOP (0.337", 8.56mm Width) requires SNAPHAT	44-SOH
	M48T35AV-10MH1F IC RTC CLK/CALENDAR PAR 28SOH STMicroelectronics	6	$24.06		Timekeeper®	Tape & Reel (TR)	Active	Clock/Calendar	Leap Year	-	HH:MM:SS (24 hr)	YY-MM-DD-dd	Parallel	3V ~ 3.6V	-	2mA @ 3V ~ 3.6V	0°C ~ 70°C	Surface Mount	28-SOP (0.350", 8.89mm Width) with SNAPHAT Sockets	28-SOH
	RV5C387A-E2-F REAL TIME CLOCK IC WITH VOLTAGE Nisshinbo Micro Devices Inc.	486	$1.62			Tape & Reel (TR)	Active	Clock/Calendar	Alarm, Leap Year	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	2V ~ 5.5V	-	0.8µA @ 3V	-40°C ~ 85°C	Surface Mount	10-LFSOP, 10-MSOP (0.110", 2.80mm Width)	10-SSOP-G
	RV-8263-C7-32.768KHZ-20PPM-TA-QC IC RTC CLK/CALENDAR I2C 8SON Micro Crystal AG	80	$1.70			Tape & Reel (TR)	Active	Clock/Calendar	Alarm, Leap Year, Programmable Clock Output, RAM, Timer	1B	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	0.9V ~ 5.5V	-	0.24µA @ 3V	-40°C ~ 85°C (TA)	Surface Mount	8-WCDFN	8-SON (3.2x1.5)
	RV-4162-C7-32.768KHZ-20PPM-TA-QC IC RTC CLK/CALENDAR I2C 8SON Micro Crystal AG	130	$2.72			Tape & Reel (TR)	Active	Clock/Calendar	Alarm, Leap Year, Programmable Clock Output, Watchdog Timer	-	HH:MM:SS:hh (24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	1V ~ 4.4V	-	0.5µA @ 3V	-40°C ~ 85°C (TA)	Surface Mount	8-WCDFN	8-SON (3.2x1.5)