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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (USD) 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 NV SRAM with Phantom Clock DS1243Y-120+ Analog Devices / Maxim Integrated 1: $60.02 1,401In Stock	Mfr. Part No. DS1243Y-120+ Mouser Part No 700-DS1243Y-120	Analog Devices / Maxim Integrated	Real Time Clock 64k NV SRAM with Phantom Clock	Datasheet	1,401In Stock	$60.02 $49.06 $46.30 $45.02 View $41.84 Quote	Min.: 1 Mult.: 1 Max.: 1,130	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
Real Time Clock Real-Time Clocks DS12885S+T&R Analog Devices / Maxim Integrated 1: $8.59 484In Stock	Mfr. Part No. DS12885S+T&R Mouser Part No 700-DS12885ST&R	Analog Devices / Maxim Integrated	Real Time Clock Real-Time Clocks	Datasheet	484In Stock	Cut Tape $8.59 $8.40 $8.37 $8.37 MouseReel Available	Min.: 1 Mult.: 1 Max.: 387	Multiplexed	YY-MM-DD-dd	HH:MM:SS (24 hr)	SO-24		4.5 V	5.5 V	+ 70 C	DS12885S	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock Serial Alarm Real-Time Clock DS1305E+T&R Analog Devices / Maxim Integrated 1: $9.71 2,765In Stock	Mfr. Part No. DS1305E+T&R Mouser Part No 700-DS1305ET&R	Analog Devices / Maxim Integrated	Real Time Clock Serial Alarm Real-Time Clock	Datasheet	2,765In Stock	Cut Tape $9.71 $7.56 $7.02 $6.43 $6.18 Reel $6.18 MouseReel Available	Min.: 1 Mult.: 1 Max.: 2,212 : 2,500	Serial 3-Wire, SPI	YY-MM-DD	HH:MM:SS (24 hr)	TSSOP-20	Backup Switching	2 V	5.5 V	+ 70 C	DS1305E	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock Serial Alarm Real-Time Clock DS1306N+ Analog Devices / Maxim Integrated 1: $13.21 185In Stock	Mfr. Part No. DS1306N+ Mouser Part No 700-DS1306N	Analog Devices / Maxim Integrated	Real Time Clock Serial Alarm Real-Time Clock	Datasheet	185In Stock	$13.21 $10.34 $9.62 $8.83	Min.: 1 Mult.: 1 Max.: 148	Serial 3-Wire, SPI	YY-MM-DD	HH:MM:SS (24 hr)	DIP-16	Backup Switching	2 V	5.5 V	+ 70 C	DS1306N	Through Hole	Tube
Real Time Clock Y2K-Compliant, Nonvolatile Timekeeping R DS1744-70+ Analog Devices / Maxim Integrated 1: $64.79 263In Stock	Mfr. Part No. DS1744-70+ Mouser Part No 700-DS1744-70	Analog Devices / Maxim Integrated	Real Time Clock Y2K-Compliant, Nonvolatile Timekeeping R	Datasheet	263In Stock	$64.79 $53.52 $50.68 $50.04	Min.: 1 Mult.: 1 Max.: 210	Parallel	YY-MM-DD-dd	HH:MM:SS (24 hr)	EDIP-28	Integrated Battery	4.5 V	5.5 V	+ 70 C	DS1744	Through Hole	Tube
Real Time Clock Y2K-Compliant, Nonvolatile Timekeeping R DS1746W-120+ Analog Devices / Maxim Integrated 1: $69.11 110In Stock	Mfr. Part No. DS1746W-120+ Mouser Part No 700-DS1746W-120	Analog Devices / Maxim Integrated	Real Time Clock Y2K-Compliant, Nonvolatile Timekeeping R	Datasheet	110In Stock	$69.11 $57.08 $54.06	Min.: 1 Mult.: 1 Max.: 88	Parallel	YY-MM-DD-dd	HH:MM:SS (24 hr)	EDIP-32	Integrated Battery	2.97 V	3.63 V	+ 70 C	DS1746W	Through Hole	Tube
Real Time Clock Y2K-Compliant, Nonvolatile Timekeeping R DS1747-70+ Analog Devices / Maxim Integrated 1: $87.23 295In Stock	Mfr. Part No. DS1747-70+ Mouser Part No 700-DS1747-70	Analog Devices / Maxim Integrated	Real Time Clock Y2K-Compliant, Nonvolatile Timekeeping R	Datasheet	295In Stock	$87.23 $72.62 $68.37 $64.58	Min.: 1 Mult.: 1 Max.: 236	Parallel	YY-MM-DD-dd	HH:MM:SS (24 hr)	EDIP-32	Integrated Battery	4.5 V	5.5 V	+ 70 C	DS1747	Through Hole	Tube
Real Time Clock Extremely Accurate SPI Bus RTC with Inte DS3234S#T&R Analog Devices / Maxim Integrated 1: $15.18 1,898In Stock	Mfr. Part No. DS3234S#T&R Mouser Part No 700-DS3234S#T&R-	Analog Devices / Maxim Integrated	Real Time Clock Extremely Accurate SPI Bus RTC with Inte	Datasheet	1,898In Stock	Cut Tape $15.18 $11.89 $11.05 $10.15 View Reel $8.55 $10.06 $10.04 $8.55 MouseReel Available	Min.: 1 Mult.: 1 Max.: 1,518 : 1,000	SPI	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	SO-20	Backup Switching	2 V	5.5 V	+ 70 C	DS3234S	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock 16K (2Kx8) 150ns M48T02-150PC1 STMicroelectronics 1: $31.31 643In Stock	Mfr. Part No. M48T02-150PC1 Mouser Part No 511-M48T0215PC1	STMicroelectronics	Real Time Clock 16K (2Kx8) 150ns	Datasheet	643In Stock	$31.31 $24.89 $22.76 $21.55 $20.74	Min.: 1 Mult.: 1	Parallel	YY-MM-DD-dd	HH:MM:SS (24 hr)	PCDIP-24	Integrated Battery	4.75 V	5.5 V	+ 70 C	M48T02	Through Hole	Tube
Real Time Clock 16K (2Kx8) 70ns M48T02-70PC1 STMicroelectronics 1: $29.97 430In Stock	Mfr. Part No. M48T02-70PC1 Mouser Part No 511-M48T0270PC1	STMicroelectronics	Real Time Clock 16K (2Kx8) 70ns	Datasheet	430In Stock	$29.97 $23.81 $22.47 $20.85 View $20.12 $19.41 Quote	Min.: 1 Mult.: 1	Parallel	YY-MM-DD-dd	HH:MM:SS (24 hr)	PCDIP-24	Integrated Battery	4.75 V	5.5 V	+ 70 C	M48T02	Through Hole	Tube
Real Time Clock 64K (8Kx8) 150ns M48T08-150PC1 STMicroelectronics 1: $39.11 108In Stock 480Expected 2026/10/29	Mfr. Part No. M48T08-150PC1 Mouser Part No 511-M48T0815PC1	STMicroelectronics	Real Time Clock 64K (8Kx8) 150ns	Datasheet	108In Stock 480Expected 2026/10/29	$39.11 $31.52 $29.59 $28.54 View $26.56 $26.48 Quote	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 256K (32Kx8) 70ns M48T35-70PC1 STMicroelectronics 1: $54.64 234In Stock	Mfr. Part No. M48T35-70PC1 Mouser Part No 511-M48T3570PC1	STMicroelectronics	Real Time Clock 256K (32Kx8) 70ns	Datasheet	234In Stock	$54.64 $44.46 $41.75 $39.39 View $39.37 Quote	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	M48T35	Through Hole	Tube
Real Time Clock 256K (32Kx8) 70ns M48T35Y-70MH1F STMicroelectronics 1: $24.20 520In Stock	Mfr. Part No. M48T35Y-70MH1F Mouser Part No 511-M48T35Y-70MH1F	STMicroelectronics	Real Time Clock 256K (32Kx8) 70ns	Datasheet	520In Stock	Cut Tape $24.20 $19.39 $18.18 $16.85 View Reel $15.47 $16.49 $15.47 $15.47 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	M48T35Y	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock 64K (8Kx8) 70ns M48T58-70PC1 STMicroelectronics 1: $47.87 179In Stock	Mfr. Part No. M48T58-70PC1 Mouser Part No 511-M48T5870PC1	STMicroelectronics	Real Time Clock 64K (8Kx8) 70ns	Datasheet	179In Stock	$47.87 $38.95 $36.60 $35.80 View $33.68 Quote	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	M48T58	Through Hole	Tube
Real Time Clock 64K (8Kx8) 70ns M48T58Y-70PC1 STMicroelectronics 1: $37.34 418In Stock	Mfr. Part No. M48T58Y-70PC1 Mouser Part No 511-M48T58Y70PC1	STMicroelectronics	Real Time Clock 64K (8Kx8) 70ns	Datasheet	418In Stock	$37.34 $30.08 $28.21 $26.81 View $25.59 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	M48T58Y	Through Hole	Tube
Real Time Clock Parallel RTC BQ4802YPW Texas Instruments 1: $12.61 76In Stock End of Life	Mfr. Part No. BQ4802YPW Mouser Part No 595-BQ4802YPW End of Life	Texas Instruments	Real Time Clock Parallel RTC	Datasheet	76In Stock	$12.61 $9.87 $9.19 $8.44 View $8.36 $7.87 $7.69 Quote	Min.: 1 Mult.: 1	Parallel	YY-MM-DD-dd	HH:MM:SS (24 hr)	TSSOP-28	Backup Switching	4.5 V	5.5 V	+ 70 C	BQ4802Y	SMD/SMT	Tube
Real Time Clock 256k NV SRAM with Phantom Clock DS1244Y-70+ Analog Devices / Maxim Integrated 1: $66.37 57In Stock	Mfr. Part No. DS1244Y-70+ Mouser Part No 700-DS1244Y-70	Analog Devices / Maxim Integrated	Real Time Clock 256k NV SRAM with Phantom Clock	Datasheet	57In Stock	$66.37 $54.82 $51.93 $51.27	Min.: 1 Mult.: 1	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	DS1244Y	Through Hole	Tube
Real Time Clock 1024k NV SRAM with Phantom Clock DS1248WP-120+ Analog Devices / Maxim Integrated 1: $46.24 3In Stock	Mfr. Part No. DS1248WP-120+ Mouser Part No 700-DS1248WP-120	Analog Devices / Maxim Integrated	Real Time Clock 1024k NV SRAM with Phantom Clock	Datasheet	3In Stock	$46.24 $45.22 $45.09	Min.: 1 Mult.: 1	Parallel	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	PowerCap Module-34	Backup Switching	2.97 V	3.63 V	+ 70 C	DS1248WP	SMD/SMT	Tray
Real Time Clock 1024k NV SRAM with Phantom Clock DS1248Y-70+ Analog Devices / Maxim Integrated 1: $73.55 147In Stock	Mfr. Part No. DS1248Y-70+ Mouser Part No 700-DS1248Y-70	Analog Devices / Maxim Integrated	Real Time Clock 1024k NV SRAM with Phantom Clock	Datasheet	147In Stock	$73.55 $60.78 $57.52 $54.84	Min.: 1 Mult.: 1 Max.: 117	Parallel	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	EDIP-32	Integrated Battery	4.5 V	5.5 V	+ 70 C	DS1248Y	Through Hole	Tube
Real Time Clock 4096k NV SRAM with Phantom Clock DS1251Y-70+ Analog Devices / Maxim Integrated 1: $75.90 89In Stock	Mfr. Part No. DS1251Y-70+ Mouser Part No 700-DS1251Y-70	Analog Devices / Maxim Integrated	Real Time Clock 4096k NV SRAM with Phantom Clock	Datasheet	89In Stock	$75.90 $62.94 $59.16 $55.04	Min.: 1 Mult.: 1	Parallel, Phantom Clock	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	EDIP-32	Integrated Battery	4.5 V	5.5 V	+ 70 C	DS1251Y	Through Hole	Tube
Real Time Clock Real-Time Clocks DS12885S+ Analog Devices / Maxim Integrated 1: $8.59 55In Stock	Mfr. Part No. DS12885S+ Mouser Part No 700-DS12885S	Analog Devices / Maxim Integrated	Real Time Clock Real-Time Clocks	Datasheet	55In Stock	$8.59 $8.40 $8.37	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	DS12885S	SMD/SMT	Tube
Real Time Clock Trickle-Charge Timekeeping Chip DS1302+ Analog Devices / Maxim Integrated 1: $7.04 577In Stock	Mfr. Part No. DS1302+ Mouser Part No 700-DS1302	Analog Devices / Maxim Integrated	Real Time Clock Trickle-Charge Timekeeping Chip Learn More about Analog Devices / Maxim Integrated maxim ds1302 timekeeping chip	Datasheet	577In Stock	$7.04 $5.40 $4.93 $4.54 $4.31	Min.: 1 Mult.: 1 Max.: 461	Serial 3-Wire	YY-MM-DD-dd	HH:MM:SS (24 hr)	PDIP-8	Backup Switching	2 V	5.5 V	+ 70 C	DS1302	Through Hole	Tube
Real Time Clock Trickle-Charge Timekeeping Chip DS1302Z+T&R Analog Devices / Maxim Integrated 1: $5.56 1,315In Stock	Mfr. Part No. DS1302Z+T&R Mouser Part No 700-DS1302ZT&R	Analog Devices / Maxim Integrated	Real Time Clock Trickle-Charge Timekeeping Chip Learn More about Analog Devices / Maxim Integrated maxim ds1302 timekeeping chip	Datasheet	1,315In Stock	Cut Tape $5.56 $4.33 $4.01 $3.66 $3.63 $3.63 MouseReel Available	Min.: 1 Mult.: 1 Max.: 1,052	Serial 3-Wire	YY-MM-DD-dd	HH:MM:SS (24 hr)	SOIC-8	Backup Switching	2 V	5.5 V	+ 70 C	DS1302Z	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock Serial Alarm Real-Time Clock DS1305+ Analog Devices / Maxim Integrated 1: $12.12 647In Stock	Mfr. Part No. DS1305+ Mouser Part No 700-DS1305	Analog Devices / Maxim Integrated	Real Time Clock Serial Alarm Real-Time Clock	Datasheet	647In Stock	$12.12 $9.58 $8.13 $8.11 View $8.04 $7.55	Min.: 1 Mult.: 1 Max.: 517	Serial 3-Wire, SPI	YY-MM-DD	HH:MM:SS (24 hr)	DIP-16	Backup Switching	2 V	5.5 V	+ 70 C	DS1305	Through Hole	Tube
Real Time Clock Serial Alarm Real-Time Clock DS1306E+ Analog Devices / Maxim Integrated 1: $7.86 1,812In Stock	Mfr. Part No. DS1306E+ Mouser Part No 700-DS1306E	Analog Devices / Maxim Integrated	Real Time Clock Serial Alarm Real-Time Clock	Datasheet	1,812In Stock	$7.86 $6.90 $6.40 $5.84 View $5.57 $5.42 $5.27	Min.: 1 Mult.: 1 Max.: 1,449	Serial 3-Wire, SPI	YY-MM-DD	HH:MM:SS (24 hr)	TSSOP-20	Backup Switching	2 V	5.5 V	+ 70 C	DS1306E	SMD/SMT	Tube