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Real Time Clock

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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	Minimum Operating Temperature	Maximum Operating Temperature	Series	Mounting Style	Packaging
Real Time Clock I2CAL TIME CLK/CLNDR 8LD ISL1208IU8Z-T7A Renesas / Intersil 1: $5.09 2,869In Stock	Mfr. Part No. ISL1208IU8Z-T7A Mouser Part No 968-ISL1208IU8Z-T7A	Renesas / Intersil	Real Time Clock I2CAL TIME CLK/CLNDR 8LD	Datasheet	2,869In Stock	Cut Tape $5.09 $3.88 $3.57 $3.23 Reel $3.12 View $3.02 $2.90 $2.84 Quote MouseReel Available	Min.: 1 Mult.: 1 : 250	I2C	YY-MM-DD-dd	HH:MM:SS (24 hr)	MSOP-8	Backup Switching	2.7 V	5.5 V	- 40 C	+ 85 C	ISL1208	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock I2CAL TIME CLK/CLNDR 8LD ISL1208IU8Z-TK Renesas / Intersil 1: $3.61 3,502In Stock 3,000Expected 08/07/2027	Mfr. Part No. ISL1208IU8Z-TK Mouser Part No 968-ISL1208IU8Z-TK	Renesas / Intersil	Real Time Clock I2CAL TIME CLK/CLNDR 8LD	Datasheet	3,502In Stock 3,000Expected 08/07/2027	Cut Tape $3.61 $2.72 $2.50 $2.25 Reel $1.97 View $2.13 $2.07 $1.91 $1.88 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	I2C	YY-MM-DD-dd	HH:MM:SS (24 hr)	MSOP-8	Backup Switching	2.7 V	5.5 V	- 40 C	+ 85 C	ISL1208	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock REAL TIME CLKRTC IN ISL1219IUZ Renesas / Intersil 1: $4.08 1,682In Stock	Mfr. Part No. ISL1219IUZ Mouser Part No 968-ISL1219IUZ	Renesas / Intersil	Real Time Clock REAL TIME CLKRTC IN	Datasheet	1,682In Stock	$4.08 $3.08 $2.83 $2.64 View $2.50 $2.39 $2.23 $2.19	Min.: 1 Mult.: 1	I2C	YY-MM-DD-dd	HH:MM:SS (24 hr)	MSOP-10	Backup Switching	2.7 V	5.5 V	- 40 C	+ 85 C	ISL1219	SMD/SMT	Tube
Real Time Clock 32.768 kHz +/-20 PPM I2C -40/+85C RV-4162-C7-32.768k-20PPM-TA-QA Micro Crystal 1: $2.61 90In Stock 1,000Expected 04/12/2026	Mfr. Part No. RV-4162-C7-32.768k-20PPM-TA-QA Mouser Part No 428-202471-MG01	Micro Crystal	Real Time Clock 32.768 kHz +/-20 PPM I2C -40/+85C	Datasheet	90In Stock 1,000Expected 04/12/2026	Cut Tape $2.61 $2.04 $1.90 $1.77 Reel $1.50 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	Serial 2-Wire, I2C	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)		No Backup Switching	1 V	4.4 V	- 40 C	+ 85 C	RV-4162-C7	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock 32.768 kHz +/-20 PPM SPI -40/+85C RV-8063-C7-32.768KHZ-20PPM-TA-QC Micro Crystal 1: $1.58 1,470In Stock	Mfr. Part No. RV-8063-C7-32.768KHZ-20PPM-TA-QC Mouser Part No 428-203119-MG01	Micro Crystal	Real Time Clock 32.768 kHz +/-20 PPM SPI -40/+85C Learn More about Micro Crystal real time clock modules	Datasheet	1,470In Stock	Cut Tape $1.58 $1.16 $1.05 $0.924 Reel $0.833 View $0.868 $0.845 $0.793 $0.778 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	Serial, I2C, SPI	YY-MM-DD-dd	HH:MM:SS (24 hr)		No Backup Switching	900 mV	5.5 V	- 40 C	+ 85 C	RV-8063-C7	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock I2C GP RTCC 64B SRAM ID MCP79400-I/SN Microchip Technology 1: $0.95 1,109In Stock	Mfr. Part No. MCP79400-I/SN Mouser Part No 579-MCP79400ISN	Microchip Technology	Real Time Clock I2C GP RTCC 64B SRAM ID Learn More about Microchip Technology microchip mcp7940n calendar	Datasheet	1,109In Stock	$0.95 $0.88 $0.847	Min.: 1 Mult.: 1	I2C	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	SOIC-8	Backup Switching	1.8 V	5.5 V	- 40 C	+ 85 C	MCP79400	SMD/SMT	Tube
Real Time Clock I2C GP RTCC 64B SRAM ID MCP79400-I/ST Microchip Technology 1: $1.00 643In Stock	Mfr. Part No. MCP79400-I/ST Mouser Part No 579-MCP79400IST	Microchip Technology	Real Time Clock I2C GP RTCC 64B SRAM ID Learn More about Microchip Technology microchip mcp7940n calendar	Datasheet	643In Stock	$1.00 $0.92 $0.885	Min.: 1 Mult.: 1	Serial 2-Wire, I2C	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)		Backup Switching	1.8 V	5.5 V	- 40 C	+ 85 C		SMD/SMT	Tube
Real Time Clock I2C GP RTCC 64B SRAM EUI-48 MCP79401-I/MS Microchip Technology 1: $1.08 1,205In Stock	Mfr. Part No. MCP79401-I/MS Mouser Part No 579-MCP79401IMS	Microchip Technology	Real Time Clock I2C GP RTCC 64B SRAM EUI-48 Learn More about Microchip Technology microchip mcp7940n calendar	Datasheet	1,205In Stock	$1.08 $1.01 $0.988	Min.: 1 Mult.: 1	I2C	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	MSOP-8	Backup Switching	1.8 V	5.5 V	- 40 C	+ 85 C		SMD/SMT	Tube
Real Time Clock I2C GP RTCC 64B SRAM EUI-48 MCP79401-I/ST Microchip Technology 1: $1.08 207In Stock	Mfr. Part No. MCP79401-I/ST Mouser Part No 579-MCP79401IST	Microchip Technology	Real Time Clock I2C GP RTCC 64B SRAM EUI-48 Learn More about Microchip Technology microchip mcp7940n calendar	Datasheet	207In Stock	$1.08 $1.01 $0.988	Min.: 1 Mult.: 1	Serial 2-Wire, I2C	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)		Backup Switching	1.8 V	5.5 V	- 40 C	+ 85 C		SMD/SMT	Tube
Real Time Clock I2C GP RTCC 64B SRAM EUI-64 MCP79402-I/MS Microchip Technology 1: $1.08 737In Stock	Mfr. Part No. MCP79402-I/MS Mouser Part No 579-MCP79402IMS	Microchip Technology	Real Time Clock I2C GP RTCC 64B SRAM EUI-64 Learn More about Microchip Technology microchip mcp7940n calendar	Datasheet	737In Stock	$1.08 $1.01 $0.988	Min.: 1 Mult.: 1	Serial 2-Wire, I2C	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)		Backup Switching	1.8 V	5.5 V	- 40 C	+ 85 C		SMD/SMT	Tube
Real Time Clock I2C GP RTCC 64B SRAM EUI-64 MCP79402-I/SN Microchip Technology 1: $1.04 735In Stock	Mfr. Part No. MCP79402-I/SN Mouser Part No 579-MCP79402ISN	Microchip Technology	Real Time Clock I2C GP RTCC 64B SRAM EUI-64 Learn More about Microchip Technology microchip mcp7940n calendar	Datasheet	735In Stock	$1.04 $0.96 $0.924	Min.: 1 Mult.: 1	I2C	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	SOIC-8	Backup Switching	1.8 V	5.5 V	- 40 C	+ 85 C	MCP79402	SMD/SMT	Tube
Real Time Clock I2C RTCC 64B SRAM No VBAT MCP7940M-I/P Microchip Technology 1: $0.74 667In Stock	Mfr. Part No. MCP7940M-I/P Mouser Part No 579-MCP7940579-M-I/P	Microchip Technology	Real Time Clock I2C RTCC 64B SRAM No VBAT Learn More about Microchip Technology microchip real time clocks	Datasheet	667In Stock	$0.74 $0.68	Min.: 1 Mult.: 1	I2C	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	PDIP-8	No Backup Switching	1.8 V	5.5 V	- 40 C	+ 85 C		Through Hole	Tube
Real Time Clock I2C RTCC 64B SRAM No VBAT MCP7940M-I/MS Microchip Technology 1: $0.71 850In Stock	Mfr. Part No. MCP7940M-I/MS Mouser Part No 579-MCP7940M-I/MS	Microchip Technology	Real Time Clock I2C RTCC 64B SRAM No VBAT Learn More about Microchip Technology microchip real time clocks	Datasheet	850In Stock	$0.71 $0.66 $0.629	Min.: 1 Mult.: 1	I2C	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	MSOP-8	No Backup Switching	1.8 V	5.5 V	- 40 C	+ 85 C		SMD/SMT	Tube
Real Time Clock I2C RTCC 64B SRAM No VBAT MCP7940M-I/SN Microchip Technology 1: $0.67 39In Stock 600Expected 05/11/2026	Mfr. Part No. MCP7940M-I/SN Mouser Part No 579-MCP7940M-I/SN	Microchip Technology	Real Time Clock I2C RTCC 64B SRAM No VBAT Learn More about Microchip Technology microchip real time clocks	Datasheet	39In Stock 600Expected 05/11/2026	$0.67 $0.62 $0.603	Min.: 1 Mult.: 1	I2C	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	SOIC-8	No Backup Switching	1.8 V	5.5 V	- 40 C	+ 85 C		SMD/SMT	Tube
Real Time Clock I2C RTCC 64B SRAM No VBAT MCP7940MT-I/MNY Microchip Technology 1: $0.83 1,602In Stock 3,300Expected 21/12/2026	Mfr. Part No. MCP7940MT-I/MNY Mouser Part No 579-MCP7940MT-I/MNY	Microchip Technology	Real Time Clock I2C RTCC 64B SRAM No VBAT Learn More about Microchip Technology microchip real time clocks	Datasheet	1,602In Stock 3,300Expected 21/12/2026	Cut Tape $0.83 $0.827 Reel $0.693 MouseReel Available	Min.: 1 Mult.: 1 : 3,300	I2C	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	TDFN-8	No Backup Switching	1.8 V	5.5 V	- 40 C	+ 85 C		SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock I2C RTCC 64B SRAM No VBAT MCP7940MT-I/ST Microchip Technology 1: $0.75 215In Stock	Mfr. Part No. MCP7940MT-I/ST Mouser Part No 579-MCP7940MT-I/ST	Microchip Technology	Real Time Clock I2C RTCC 64B SRAM No VBAT Learn More about Microchip Technology microchip real time clocks	Datasheet	215In Stock	Cut Tape $0.75 Reel $0.629 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	I2C	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	TSSOP-8	No Backup Switching	1.8 V	5.5 V	- 40 C	+ 85 C		SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock I2C GP RTCC 64B SRAM, EXT MCP7940N-E/MS Microchip Technology 1: $0.97 852In Stock	Mfr. Part No. MCP7940N-E/MS Mouser Part No 579-MCP7940N-E/MS	Microchip Technology	Real Time Clock I2C GP RTCC 64B SRAM, EXT Learn More about Microchip Technology microchip real time clocks	Datasheet	852In Stock	$0.97 $0.90 $0.85	Min.: 1 Mult.: 1	Serial 2-Wire, I2C	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	MSOP-8	Backup Switching	1.8 V	5.5 V	- 40 C	+ 125 C		SMD/SMT	Tube
Real Time Clock I2C GP RTCC 64B SRAM ExT SER EE, ExT MCP7940N-E/SN Microchip Technology 1: $0.92 820In Stock	Mfr. Part No. MCP7940N-E/SN Mouser Part No 579-MCP7940N-E/SN	Microchip Technology	Real Time Clock I2C GP RTCC 64B SRAM ExT SER EE, ExT Learn More about Microchip Technology microchip real time clocks	Datasheet	820In Stock	$0.92 $0.85 $0.813	Min.: 1 Mult.: 1	Serial 2-Wire, I2C	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	SOIC-8	Backup Switching	1.8 V	5.5 V	- 40 C	+ 125 C		SMD/SMT	Tube
Real Time Clock I2C GP RTCC,64B SRAM MCP7940N-I/P Microchip Technology 1: $0.92 458In Stock	Mfr. Part No. MCP7940N-I/P Mouser Part No 579-MCP7940N-I/P	Microchip Technology	Real Time Clock I2C GP RTCC,64B SRAM Learn More about Microchip Technology microchip real time clocks	Datasheet	458In Stock	$0.92 $0.85 $0.813	Min.: 1 Mult.: 1	Serial 2-Wire, I2C	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	PDIP-8	Backup Switching	1.8 V	5.5 V	- 40 C	+ 85 C		Through Hole	Tube
Real Time Clock I2C GP RTCC 64B SRAM MCP7940N-I/ST Microchip Technology 1: $0.90 567In Stock	Mfr. Part No. MCP7940N-I/ST Mouser Part No 579-MCP7940N-I/ST	Microchip Technology	Real Time Clock I2C GP RTCC 64B SRAM Learn More about Microchip Technology microchip mcp7940n calendar	Datasheet	567In Stock	$0.90 $0.83 $0.80	Min.: 1 Mult.: 1	Serial 2-Wire, I2C	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	TSSOP-8	Backup Switching	1.8 V	5.5 V	- 40 C	+ 85 C		SMD/SMT	Tube
Real Time Clock I2C GP RTCC 64B SRAM EXT MCP7940NT-E/SN Microchip Technology 1: $0.99 822In Stock 3,300Expected 23/11/2026	Mfr. Part No. MCP7940NT-E/SN Mouser Part No 579-MCP7940NT-E/SN	Microchip Technology	Real Time Clock I2C GP RTCC 64B SRAM EXT Learn More about Microchip Technology microchip real time clocks	Datasheet	822In Stock 3,300Expected 23/11/2026	Cut Tape $0.99 $0.982 $0.98 $0.978 View Reel $0.813 $0.966 $0.963 $0.96 $0.813 MouseReel Available	Min.: 1 Mult.: 1 : 3,300	Serial 2-Wire, I2C	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	SOIC-8	Backup Switching	1.8 V	5.5 V	- 40 C	+ 125 C	MCP7940N	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock I2C GP RTCC 1Kb EE 64B SRAM ID MCP79410-I/ST Microchip Technology 1: $1.08 607In Stock	Mfr. Part No. MCP79410-I/ST Mouser Part No 579-MCP79410-I/ST	Microchip Technology	Real Time Clock I2C GP RTCC 1Kb EE 64B SRAM ID Learn More about Microchip Technology microchip mcp794xx calendars	Datasheet	607In Stock	$1.08 $1.01 $0.988	Min.: 1 Mult.: 1	I2C	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	TSSOP-8	Backup Switching	1.8 V	5.5 V	- 40 C	+ 85 C		SMD/SMT	Tube
Real Time Clock I2C GP RTCC 1Kb EE 64B SRAM ID MCP79410T-I/ST Microchip Technology 1: $1.18 1,151In Stock 5,000Expected 18/01/2027	Mfr. Part No. MCP79410T-I/ST Mouser Part No 579-MCP79410T-I/ST	Microchip Technology	Real Time Clock I2C GP RTCC 1Kb EE 64B SRAM ID Learn More about Microchip Technology microchip mcp794xx calendars	Datasheet	1,151In Stock 5,000Expected 18/01/2027	Cut Tape $1.18 Reel $0.988 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	I2C	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	TSSOP-8	Backup Switching	1.8 V	5.5 V	- 40 C	+ 85 C		SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock I2C GP RTCC 1Kb EE 64B SRAM EUI-48 MCP79411-I/MS Microchip Technology 1: $1.18 698In Stock	Mfr. Part No. MCP79411-I/MS Mouser Part No 579-MCP79411IMS	Microchip Technology	Real Time Clock I2C GP RTCC 1Kb EE 64B SRAM EUI-48 Learn More about Microchip Technology microchip mcp794xx calendars	Datasheet	698In Stock	$1.18 $1.08 $1.03	Min.: 1 Mult.: 1	I2C	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	MSOP-8	Backup Switching	1.8 V	5.5 V	- 40 C	+ 85 C		SMD/SMT	Tube
Real Time Clock I2C GP RTCC 1Kb EE 64B SRAM EUI-48 MCP79411T-I/MNY Microchip Technology 1: $1.31 18In Stock 13,200On Order	Mfr. Part No. MCP79411T-I/MNY Mouser Part No 579-MCP79411TIMNY	Microchip Technology	Real Time Clock I2C GP RTCC 1Kb EE 64B SRAM EUI-48 Learn More about Microchip Technology microchip mcp794xx calendars	Datasheet	18In Stock 13,200On Order On Order Ship Dates Mfr. No: MCP79411T-I/MNY Stock: 18 Can Dispatch Immediately On Order: 6,600 Expected 05/01/2027 6,600 Expected 18/01/2027 Factory Lead Time: 12 Weeks	Cut Tape $1.31 Reel $1.09 MouseReel Available	Min.: 1 Mult.: 1 : 3,300	I2C	YY-MM-DD-dd	HH:MM:SS (24 hr)	TDFN-8	Backup Switching	1.8 V	5.5 V	- 40 C	+ 85 C		SMD/SMT	Reel, Cut Tape, MouseReel