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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (PEN) Filter the results in the table by unit price based on your quantity.	Qty.	Interface Type	Date Format	Time Format	Package / Case	Battery Backup Switching	Supply Voltage - Min	Supply Voltage - Max	Maximum Operating Temperature	Series	Mounting Style	Packaging
Real Time Clock 64K (8Kx8) 100ns M48T08Y-10MH1F STMicroelectronics 1: S/ 160.10 937In Stock	Mfr. Part # M48T08Y-10MH1F Mouser Part # 511-M48T08Y-10MH1F	STMicroelectronics	Real Time Clock 64K (8Kx8) 100ns	Datasheet	937In Stock	Cut Tape S/ 160.10 S/ 129.62 S/ 121.99 S/ 116.93 View Reel S/ 105.60 S/ 109.61 S/ 105.68 S/ 105.60 Quote MouseReel Available	Min.: 1 Mult.: 1 : 936	Parallel	YY-MM-DD-dd	HH:MM:SS (24 hr)	SOX-28	Backup Switching	4.5 V	5.5 V	+ 70 C	M48T08Y	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock 16K (2Kx8) 70ns M48T12-70PC1 STMicroelectronics 1: S/ 160.60 844In Stock	Mfr. Part # M48T12-70PC1 Mouser Part # 511-M48T1270PC1	STMicroelectronics	Real Time Clock 16K (2Kx8) 70ns	Datasheet	844In Stock	S/ 160.60 S/ 118.14 S/ 113.39 S/ 108.95 View S/ 105.02 Quote	Min.: 1 Mult.: 1	Parallel	YY-MM-DD-dd	HH:MM:SS (24 hr)	PCDIP-24	Integrated Battery	4.5 V	5.5 V	+ 70 C	M48T12	Through Hole	Tube
Real Time Clock 64K (8Kx8) 150ns M48T18-150PC1 STMicroelectronics 1: S/ 196.45 408In Stock	Mfr. Part # M48T18-150PC1 Mouser Part # 511-M48T1815PC1	STMicroelectronics	Real Time Clock 64K (8Kx8) 150ns	Datasheet	408In Stock	S/ 196.45 S/ 148.38 S/ 141.88 S/ 139.27 View S/ 138.69 Quote	Min.: 1 Mult.: 1	Parallel	YY-MM-DD-dd	HH:MM:SS (24 hr)	PCDIP-28	Integrated Battery	4.5 V	5.5 V	+ 70 C	M48T18	Through Hole	Tube
Real Time Clock Trickle-Charge Timekeeping Chip DS1302S+T&R Analog Devices / Maxim Integrated 1: S/ 13.04 1,803In Stock	Mfr. Part # DS1302S+T&R Mouser Part # 700-DS1302ST&R	Analog Devices / Maxim Integrated	Real Time Clock Trickle-Charge Timekeeping Chip Learn More about Analog Devices / Maxim Integrated maxim ds1302 timekeeping chip	Datasheet	1,803In Stock	Cut Tape S/ 13.04 S/ 12.77 S/ 12.49 S/ 12.22 View S/ 12.03 S/ 11.87 S/ 11.68 S/ 11.68 MouseReel Available	Min.: 1 Mult.: 1 Max.: 1,442	Serial 3-Wire	YY-MM-DD-dd	HH:MM:SS (24 hr)	SOIC-8	Backup Switching	2 V	5.5 V	+ 70 C	DS1302S	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock Parallel RTC A 595-B Q4802LYDW A 595-BQ4 A 595-BQ4802LYDW BQ4802LYDWR Texas Instruments 1: S/ 35.69 895In Stock End of Life	Mfr. Part # BQ4802LYDWR Mouser Part # 595-BQ4802LYDWR End of Life	Texas Instruments	Real Time Clock Parallel RTC A 595-B Q4802LYDW A 595-BQ4 A 595-BQ4802LYDW	Datasheet	895In Stock	Cut Tape S/ 35.69 S/ 27.64 S/ 25.65 S/ 23.43 Reel S/ 20.98 View S/ 22.38 S/ 21.76 S/ 20.47 Quote MouseReel Available	Min.: 1 Mult.: 1 : 1,000	Parallel	YY-MM-DD-dd	HH:MM:SS (24 hr)	SOIC-28	Backup Switching	2.7 V	3.6 V	+ 70 C	BQ4802LY	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock Phantom Time Chip DS1315S-33+ Analog Devices / Maxim Integrated 1: S/ 132.66 65In Stock	Mfr. Part # DS1315S-33+ Mouser Part # 700-DS1315S-33	Analog Devices / Maxim Integrated	Real Time Clock Phantom Time Chip	Datasheet	65In Stock	S/ 132.66 S/ 107.39 S/ 101.09 S/ 96.88 View S/ 90.81 Quote	Min.: 1 Mult.: 1	Phantom Clock	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	SO-16	Backup Switching	3 V	3.6 V	+ 70 C	DS1315S	SMD/SMT	Tube
Real Time Clock Y2K-Compliant Watchdog Real-Time Clocks DS1511Y+ Analog Devices / Maxim Integrated 1: S/ 160.88 96In Stock	Mfr. Part # DS1511Y+ Mouser Part # 700-DS1511Y	Analog Devices / Maxim Integrated	Real Time Clock Y2K-Compliant Watchdog Real-Time Clocks	Datasheet	96In Stock	S/ 160.88 S/ 129.58 S/ 121.29 S/ 115.22 View S/ 110.24 Quote	Min.: 1 Mult.: 1	Parallel	YY-MM-DD-dd	HH:MM:SS (24 hr)	EDIP-28	Backup Switching	4.5 V	5.5 V	+ 70 C	DS1511Y	Through Hole	Tube
Real Time Clock 1M, Nonvolatile, Y2K-Compliant Timekeepi DS1556W-120+ Analog Devices / Maxim Integrated 1: S/ 272.63 35In Stock	Mfr. Part # DS1556W-120+ Mouser Part # 700-DS1556W-120	Analog Devices / Maxim Integrated	Real Time Clock 1M, Nonvolatile, Y2K-Compliant Timekeepi	Datasheet	35In Stock	S/ 272.63 S/ 239.35 S/ 219.61 S/ 215.76	Min.: 1 Mult.: 1	Parallel	YY-MM-DD-dd	HH:MM:SS (24 hr)		Integrated Battery	2.97 V	3.63 V	+ 70 C	DS1556W	Through Hole	Tube
Real Time Clock 3V/5V Real-Time Clocks DS17887-5+ Analog Devices / Maxim Integrated 1: S/ 169.28 72In Stock	Mfr. Part # DS17887-5+ Mouser Part # 700-DS17887-5	Analog Devices / Maxim Integrated	Real Time Clock 3V/5V Real-Time Clocks	Datasheet	72In Stock	S/ 169.28 S/ 138.34 S/ 130.55 S/ 126.93 View S/ 118.06 Quote	Min.: 1 Mult.: 1	Multiplexed	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	EDIP-24	Integrated Battery	4.5 V	5.5 V	+ 70 C	DS17887	Through Hole	Tube
Real Time Clock 256K (32Kx8) 100ns M48T37V-10MH1F STMicroelectronics 1: S/ 87.62 330In Stock	Mfr. Part # M48T37V-10MH1F Mouser Part # 511-M48T37V-10MH1F	STMicroelectronics	Real Time Clock 256K (32Kx8) 100ns	Datasheet	330In Stock	Cut Tape S/ 87.62 S/ 78.82 S/ 68.78 S/ 65.39 Reel S/ 58.35 View Quote MouseReel Available	Min.: 1 Mult.: 1 : 936	Parallel	YY-MM-DD-dd	HH:MM:SS (24 hr)	SOIC-44	Backup Switching	3 V	3.6 V	+ 70 C	M48T37V	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock 1M, Nonvolatile, Y2K-Compliant Timekeepi DS1556P-70+ Analog Devices / Maxim Integrated 1: S/ 199.45 20In Stock	Mfr. Part # DS1556P-70+ Mouser Part # 700-DS1556P-70	Analog Devices / Maxim Integrated	Real Time Clock 1M, Nonvolatile, Y2K-Compliant Timekeepi	Datasheet	20In Stock	S/ 199.45 S/ 195.05 S/ 190.81 S/ 187.00 View Quote	Min.: 1 Mult.: 1	Parallel	YY-MM-DD-dd	HH:MM:SS (24 hr)		Backup Switching	4.5 V	5.5 V	+ 70 C	DS1556P	SMD/SMT	Tray
Real Time Clock 3V/5V Real-Time Clocks DS17287-3+ Analog Devices / Maxim Integrated 1: S/ 130.71 54In Stock	Mfr. Part # DS17287-3+ Mouser Part # 700-DS17287-3	Analog Devices / Maxim Integrated	Real Time Clock 3V/5V Real-Time Clocks	Datasheet	54In Stock	S/ 130.71 S/ 105.06 S/ 99.57 S/ 93.93 View S/ 89.49 S/ 89.45 Quote	Min.: 1 Mult.: 1	Multiplexed	YY-MM-DD-dd	HH:MM:SS (24 hr)	EDIP-24	Backup Switching	2.7 V	3.7 V	+ 70 C	DS17287	Through Hole	Tube
Real Time Clock w/242x8 NVSRAM Alarm Wake-up BQ3285ES Texas Instruments 1: S/ 71.15 85In Stock End of Life	Mfr. Part # BQ3285ES Mouser Part # 595-BQ3285ES End of Life	Texas Instruments	Real Time Clock w/242x8 NVSRAM Alarm Wake-up	Datasheet	85In Stock	S/ 71.15 S/ 56.44 S/ 52.67 S/ 48.66 View S/ 46.40 S/ 45.54 Quote	Min.: 1 Mult.: 1	Multiplexed	YY-MM-DD-dd	HH:MM:SS (24 hr)	SOIC-24		4.5 V	5.5 V	+ 70 C	BQ3285E	SMD/SMT	Tube
Real Time Clock Y2K-Compliant, Nonvolatile Timekeeping R DS1747W-120+ Analog Devices / Maxim Integrated 1: S/ 320.70 21In Stock	Mfr. Part # DS1747W-120+ Mouser Part # 700-DS1747W-120	Analog Devices / Maxim Integrated	Real Time Clock Y2K-Compliant, Nonvolatile Timekeeping R	Datasheet	21In Stock	S/ 320.70 S/ 267.06 S/ 251.42 S/ 237.48 Quote Quote	Min.: 1 Mult.: 1	Parallel	YY-MM-DD-dd	HH:MM:SS (24 hr)	EDIP-32	Integrated Battery	2.97 V	3.63 V	+ 70 C	DS1747W	Through Hole	Tube
Real Time Clock 1M, Nonvolatile, Y2K-Compliant Timekeepi DS1556-70+ Analog Devices / Maxim Integrated 1: S/ 321.75 16In Stock	Mfr. Part # DS1556-70+ Mouser Part # 700-DS1556-70	Analog Devices / Maxim Integrated	Real Time Clock 1M, Nonvolatile, Y2K-Compliant Timekeepi	Datasheet	16In Stock	S/ 321.75 S/ 267.96 S/ 252.23 S/ 238.30 View Quote	Min.: 1 Mult.: 1	Parallel	YY-MM-DD-dd	HH:MM:SS (24 hr)	EDIP-32	Integrated Battery	4.5 V	5.5 V	+ 70 C	DS1556	Through Hole	Tube
Real Time Clock 256k Nonvolatile, Y2K-Compliant Timekeep DS1554P-70+ Analog Devices / Maxim Integrated 1: S/ 133.05 37In Stock	Mfr. Part # DS1554P-70+ Mouser Part # 700-DS1554P-70	Analog Devices / Maxim Integrated	Real Time Clock 256k Nonvolatile, Y2K-Compliant Timekeep	Datasheet	37In Stock	S/ 133.05 S/ 130.09 S/ 127.28 S/ 124.72 View S/ 122.81 Quote	Min.: 1 Mult.: 1	Parallel	YY-MM-DD-dd	HH:MM:SS (24 hr)	PowerCap Module-34	Backup Switching	4.5 V	5.5 V	+ 70 C	DS1554P	SMD/SMT	Tray
Real Time Clock 3V/5V Real-Time Clocks DS17487-5+ Analog Devices / Maxim Integrated 1: S/ 141.88 49In Stock	Mfr. Part # DS17487-5+ Mouser Part # 700-DS17487-5	Analog Devices / Maxim Integrated	Real Time Clock 3V/5V Real-Time Clocks	Datasheet	49In Stock	S/ 141.88 S/ 114.91 S/ 108.06 S/ 103.62 View S/ 97.16 Quote	Min.: 1 Mult.: 1	Multiplexed	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	EDIP-24	Integrated Battery	4.5 V	5.5 V	+ 70 C	DS17487	Through Hole	Tube
Real Time Clock 3V/5V Real-Time Clocks DS17885S-5+ Analog Devices / Maxim Integrated 1: S/ 145.70 28In Stock	Mfr. Part # DS17885S-5+ Mouser Part # 700-DS17885S-5	Analog Devices / Maxim Integrated	Real Time Clock 3V/5V Real-Time Clocks	Datasheet	28In Stock	S/ 145.70 S/ 117.94 S/ 111.01 S/ 104.09 View S/ 99.76 Quote	Min.: 1 Mult.: 1	Multiplexed	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	SO-24	Backup Switching	4.5 V	5.5 V	+ 70 C	DS17885S	SMD/SMT	Tube
Real Time Clock 64 x 8, Serial, I C Real-Time Clock DS1307Z+T&R Analog Devices / Maxim Integrated 1: S/ 22.77 10,524In Stock	Mfr. Part # DS1307Z+T&R Mouser Part # 700-DS1307ZT&R	Analog Devices / Maxim Integrated	Real Time Clock 64 x 8, Serial, I C Real-Time Clock Learn More about Analog Devices / Maxim Integrated maxim ds1307	Datasheet	10,524In Stock	Cut Tape S/ 22.77 S/ 17.36 S/ 16.00 S/ 14.52 S/ 14.25 Reel S/ 12.07 MouseReel Available	Min.: 1 Mult.: 1 Max.: 8,419 : 2,500	I2C	YY-MM-DD	HH:MM:SS:hh (12 hr, 24 hr)	SOIC-8	Backup Switching	4.5 V	5.5 V	+ 70 C	DS1307Z	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock Y2K-Compliant, Nonvolatile Timekeeping R DS1746-70+ Analog Devices / Maxim Integrated 1: S/ 273.33 454In Stock	Mfr. Part # DS1746-70+ Mouser Part # 700-DS1746-70	Analog Devices / Maxim Integrated	Real Time Clock Y2K-Compliant, Nonvolatile Timekeeping R	Datasheet	454In Stock	S/ 273.33 S/ 225.77 S/ 213.85 S/ 211.17 Quote Quote	Min.: 1 Mult.: 1 Max.: 363	Parallel	YY-MM-DD-dd	HH:MM:SS (24 hr)	EDIP-32	Integrated Battery	4.5 V	5.5 V	+ 70 C	DS1746	Through Hole	Tube
Real Time Clock 64K (8Kx8) 100ns M48T08-100PC1 STMicroelectronics 1: S/ 141.53 940In Stock	Mfr. Part # M48T08-100PC1 Mouser Part # 511-M48T0810PC1	STMicroelectronics	Real Time Clock 64K (8Kx8) 100ns	Datasheet	940In Stock	S/ 141.53 S/ 106.19 S/ 101.28 S/ 97.70 View S/ 94.39 S/ 94.12	Min.: 1 Mult.: 1	Parallel	YY-MM-DD-dd	HH:MM:SS (24 hr)	PCDIP-28	Integrated Battery	4.75 V	5.5 V	+ 70 C	M48T08	Through Hole	Tube
Real Time Clock 16K (2Kx8) 150ns M48T12-150PC1 STMicroelectronics 1: S/ 171.58 944In Stock	Mfr. Part # M48T12-150PC1 Mouser Part # 511-M48T1215PC1	STMicroelectronics	Real Time Clock 16K (2Kx8) 150ns	Datasheet	944In Stock	S/ 171.58 S/ 138.57 S/ 131.99 S/ 127.95 View S/ 122.96 Quote	Min.: 1 Mult.: 1	Parallel	YY-MM-DD-dd	HH:MM:SS (24 hr)	PCDIP-24	Integrated Battery	4.5 V	5.5 V	+ 70 C	M48T12	Through Hole	Tube
Real Time Clock 64K (8Kx8) 100ns M48T18-100PC1 STMicroelectronics 1: S/ 182.79 1,351In Stock	Mfr. Part # M48T18-100PC1 Mouser Part # 511-M48T1810PC1	STMicroelectronics	Real Time Clock 64K (8Kx8) 100ns	Datasheet	1,351In Stock	S/ 182.79 S/ 147.76 S/ 138.69 S/ 135.89	Min.: 1 Mult.: 1	Parallel	YY-MM-DD-dd	HH:MM:SS (24 hr)	PCDIP-28	Integrated Battery	4.5 V	5.5 V	+ 70 C	M48T18	Through Hole	Tube
Real Time Clock 64K (8Kx8) 70ns M48T58Y-70MH1F STMicroelectronics 1: S/ 91.08 1,036In Stock	Mfr. Part # M48T58Y-70MH1F Mouser Part # 511-M48T58Y-70MH1F	STMicroelectronics	Real Time Clock 64K (8Kx8) 70ns	Datasheet	1,036In Stock	Cut Tape S/ 91.08 S/ 72.83 S/ 68.27 S/ 63.25 View Reel S/ 58.85 S/ 61.27 S/ 58.85 S/ 58.85 Quote MouseReel Available	Min.: 1 Mult.: 1 : 936	Parallel	YY-MM-DD-dd	HH:MM:SS (24 hr)	SOX-28	Backup Switching	4.5 V	5.5 V	+ 70 C	M48T58Y	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock 64k NV SRAM with Phantom Clock DS1243Y-120+ Analog Devices / Maxim Integrated 1: S/ 233.59 1,413In Stock	Mfr. Part # DS1243Y-120+ Mouser Part # 700-DS1243Y-120	Analog Devices / Maxim Integrated	Real Time Clock 64k NV SRAM with Phantom Clock	Datasheet	1,413In Stock	S/ 233.59 S/ 190.93 S/ 180.18 S/ 175.20 View S/ 162.86 Quote	Min.: 1 Mult.: 1 Max.: 1,137	Parallel	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	EDIP-28	Integrated Battery	4.5 V	5.5 V	+ 70 C	DS1243Y	Through Hole	Tube