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
	PT7C4302AUEX REAL TIME CLOCK MSOP-8 Diodes Incorporated	267	$0.54			Tape & Reel (TR)	Active	Clock/Calendar	Leap Year, NVSRAM, Square Wave Output, Trickle-Charger	31B	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	3-Wire Serial	1.2V ~ 5.5V	1.2V ~ 5.5V	25.3µA ~ 81µA @ 2V ~ 5V	-40°C ~ 85°C (TA)	Surface Mount	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)	8-MSOP
	PT7C4337BUEX IC REAL TIME CLK MSOP-8 T&R 2.5K Diodes Incorporated	354	$0.57			Tape & Reel (TR)	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 @ 1.2V ~ 1.8V	-40°C ~ 85°C (TA)	Surface Mount	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)	8-MSOP
	PT7C4337ZEEX IC RTC CLK/CALENDAR I2C 8TDFN Diodes Incorporated	927	$0.58			Tape & Reel (TR)	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	8-WFDFN Exposed Pad	8-TDFN (2x3)
	PT7C4337BZEEX IC REAL TIME CLK W-DFN2030-8 T&R Diodes Incorporated	938	$0.57			Tape & Reel (TR)	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 @ 1.2V ~ 1.8V	-40°C ~ 85°C (TA)	Surface Mount	8-WFDFN Exposed Pad	8-TDFN (2x3)
	PT7C4337AWEX IC RTC CAL I2C/2-WIRE SER 8SOIC Diodes Incorporated	944	$0.60			Tape & Reel (TR)	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 (TA)	Surface Mount	8-SOIC (0.154", 3.90mm Width)	8-SOIC
	PT7C4363BWEX IC RTC I2C SER 8SOIC T&R 2.5K Diodes Incorporated	1,502	$0.61			Tape & Reel (TR)	Active	Clock/Calendar	Alarm, Leap Year, Square Wave Output	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	1.3V ~ 5.5V	-	0.85µA ~ 0.9µA @ 3V ~ 5V	-40°C ~ 85°C (TA)	Surface Mount	8-SOIC (0.154", 3.90mm Width)	8-SOIC
	PT7C43190AWEX IC RTC CALENDAR 3-WIRE SER 8SOIC Diodes Incorporated	408	$0.63			Tape & Reel (TR)	Active	Clock/Calendar	Alarm, Leap Year, Square Wave Output	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	3-Wire Serial	1.35V ~ 5.5V	-	0.6µA ~ 14µA @ 3V ~ 5V	-40°C ~ 85°C	Surface Mount	8-SOIC (0.154", 3.90mm Width)	8-SOIC
	PT7C4339UEX IC RTC CAL I2C/2-WIRE SER 8MSOP Diodes Incorporated	972	$0.62			Tape & Reel (TR)	Active	Clock/Calendar	Alarm, Leap Year, Square Wave Output	-	HH:MM:SS (12/24 hr)	YY-MM-DD	I²C, 2-Wire Serial	3V ~ 5.5V	1.3V ~ 3.7V	250µA @ 3V ~ 5.5V	-40°C ~ 85°C (TA)	Surface Mount	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)	8-MSOP
	PT7C4337BLEX IC REAL TIME CLK TSSOP T&R 2.5K Diodes Incorporated	586	$0.64			Tape & Reel (TR)	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 @ 1.2V ~ 1.8V	-40°C ~ 85°C (TA)	Surface Mount	8-TSSOP (0.173", 4.40mm Width)	8-TSSOP
	PT7C4311AWEX IC RTC CAL I2C/2-WIRE SER 8SOIC Diodes Incorporated	877	$0.63			Tape & Reel (TR)	Active	Clock/Calendar	Leap Year, Square Wave Output, Y2K	56B	HH:MM:SS (24 hr)	YY-MM-DD	I²C, 2-Wire Serial	1.2V ~ 5.5V	2V ~ 3.5V	150µA @ 1.5V ~ 5.5V	-40°C ~ 85°C (TA)	Surface Mount	8-SOIC (0.154", 3.90mm Width)	8-SOIC
	MAX31342EWA+T LOW CURRENT REAL TIME CLOCK WITH Analog Devices Inc./Maxim Integrated	537	$0.68			Tape & Reel (TR)	Active	Clock/Calendar	Alarm, Leap Year, Square Wave Output	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I²C	1.6V ~ 3.6V	-	0.33µA @ 3V	-40°C ~ 85°C	Surface Mount	8-WFBGA, WLBGA	8-WLP (.97x1.97)
	PT7C4563BZEEX IC RTC I2C/2-WIRE SER 8TDFN T&R Diodes Incorporated	1,344	$0.70			Tape & Reel (TR)	Active	Clock/Calendar	Alarm, Leap Year, Square Wave Output	-	HH:MM:SS (24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	1.3V ~ 5.5V	-	0.65µA ~ 0.85µA @ 3V ~ 5V	-40°C ~ 85°C (TA)	Surface Mount	8-WFDFN Exposed Pad	8-TDFN (2x3)
	PT7C433833UEX IC RTC CLK/CALENDAR I2C MSOP Diodes Incorporated	738	$0.71			Tape & Reel (TR)	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	1.5V ~ 3.7V	125µA @ 2.7V ~ 5.5V	-40°C ~ 85°C	Surface Mount	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)	8-MSOP
	PT7C4311ZEEX IC RTC CAL I2C/2-WIRE SER 8TDFN Diodes Incorporated	983	$0.72			Tape & Reel (TR)	Active	Clock/Calendar	Leap Year, Square Wave Output, Y2K	56B	HH:MM:SS (24 hr)	YY-MM-DD	I²C, 2-Wire Serial	1.2V ~ 5.5V	2V ~ 3.5V	150µA @ 1.5V ~ 5.5V	-40°C ~ 85°C (TA)	Surface Mount	8-WFDFN Exposed Pad	8-TDFN (2x3)
	R2023T-E2-F 2-WIRE SERIAL INTERFACE REAL TIM Nisshinbo Micro Devices Inc.	1,092	$0.75			Tape & Reel (TR)	Active	-	-	-	-	-	-	-	-	-	-	-	-	-
	R2033T-E2-F 3 WIRE INTERFACE REAL-TIME CLOCK Nisshinbo Micro Devices Inc.	503	$0.76			Tape & Reel (TR)	Active	-	-	-	-	-	-	-	-	-	-	-	-	-
	S-35190A-J8T1G IC RTC CLK/CALENDAR SER 8-SOP ABLIC Inc.	1,009	$0.76			Tape & Reel (TR)	Not For New Designs	Clock/Calendar	Alarm, Leap Year	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	3-Wire Serial	1.3V ~ 5.5V	-	0.93µA ~ 1.1µA @ 3V ~ 5V	-40°C ~ 85°C	Surface Mount	8-SOIC (0.154", 3.90mm Width)	8-SOP-J
	S-35190A-T8T1G IC RTC CLK/CALENDAR SER 8-TSSOP ABLIC Inc.	638	$0.77			Tape & Reel (TR)	Not For New Designs	Clock/Calendar	Alarm, Leap Year	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	3-Wire Serial	1.3V ~ 5.5V	-	0.93µA ~ 1.1µA @ 3V ~ 5V	-40°C ~ 85°C	Surface Mount	8-TSSOP (0.173", 4.40mm Width)	8-TSSOP
	S-35192A-I8T1U IC RTC CLK/CALENDAR SER SNT-8A ABLIC Inc.	472	$0.76			Tape & Reel (TR)	Active	Clock/Calendar	Alarm, Leap Year	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	3-Wire Serial	1.3V ~ 5.5V	-	8µA ~ 14µA @ 3V ~ 5V	-40°C ~ 85°C	Surface Mount	8-SMD, Flat Lead	SNT-8A
	S-35391A-I8T1U IC RTC CLK/CALENDAR I2C SNT-8A ABLIC Inc.	656	$0.77			Tape & Reel (TR)	Active	Clock/Calendar	Alarm, Leap Year	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	1.3V ~ 5.5V	-	14µA ~ 30µA @ 3V ~ 5V	-40°C ~ 85°C	Surface Mount	8-SMD, Flat Lead	SNT-8A