Timers & Real-Time Clocks

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Part	Manufacturer	Peripheral IC Type	Temperature Grade	Terminal Form	No. of Terminals	Package Code	Package Shape	Package Body Material	Surface Mount	Information Access Method	Maximum Supply Voltage	On Chip Data RAM Width	Screening Level	No. of Bits	Power Supplies (V)	Package Style (Meter)	Package Equivalence Code	Interrupt Capability	Minimum Supply Voltage	Maximum Operating Temperature	Minimum Operating Temperature	Terminal Finish	Terminal Position	Maximum Seated Height	RAM Words	Width	Additional Features	External Data Bus Width	Maximum Clock Frequency	Maximum Time At Peak Reflow Temperature (s)	Peak Reflow Temperature (C)	Length	No. of Timers	Technology	Maximum Supply Current	Minimum Time	Nominal Supply Voltage	Sub-Category	Bus Compatibility	Terminal Pitch	JESD-30 Code	Moisture Sensitivity Level (MSL)	Qualification	Volatile	JESD-609 Code
DS1347T+TR	Analog Devices		INDUSTRIAL	NO LEAD	8	VSON	SQUARE	PLASTIC/EPOXY	YES	SERIAL, 4 WIRE/SPI	5.5 V			8	2.5/5	SMALL OUTLINE, VERY THIN PROFILE	SOLCC8,.12,25	Y	2 V	85 Cel	-40 Cel	Matte Tin (Sn) - annealed	DUAL	.8 mm		3 mm		0	.032 MHz			3 mm		CMOS		SECONDS	3.3 V	Timer or RTC		.65 mm	S-PDSO-N8	1	Not Qualified	YES	e3
HEF4541BT,653	NXP Semiconductors	TIMER, PROGRAMMABLE	INDUSTRIAL	GULL WING	14	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	PARALLEL, DIRECT ADDRESS	15 V					SMALL OUTLINE				85 Cel	-40 Cel	NICKEL PALLADIUM GOLD	DUAL	1.75 mm		3.9 mm		0				8.65 mm	1	CMOS			5 V			1.27 mm	R-PDSO-G14	3	Not Qualified		e4
RV-4162-C7-32.768KHZ-10PPM-TA-QC	Micro Crystal Ag	TIMER, REAL TIME CLOCK																				GOLD								40	260														e4
RV-8803-C7TAQA	Micro Crystal Ag	TIMER, REAL TIME CLOCK	INDUSTRIAL	NO LEAD	8	VSON	RECTANGULAR	PLASTIC/EPOXY	YES	I2C	5.5 V		AEC-Q200			SMALL OUTLINE, VERY THIN PROFILE	SOLCC8,.06,35	Y	1.5 V	85 Cel	-40 Cel	GOLD OVER NICKEL	DUAL	.8 mm		1.5 mm	IT ALSO OPERATES AT 2 TO 5.5 POWER SUPPLY VOLTAGE	0		40	260	3.2 mm	1	CMOS	.06 mA		3 V		I2C	.9 mm	R-PDSO-N8	1		YES	e4
DS1344D-33+T&R	Analog Devices	TIMER, REAL TIME CLOCK	INDUSTRIAL	NO LEAD	14	HVSON	SQUARE	PLASTIC/EPOXY	YES	SERIAL, 3-WIRE	5.5 V					SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE			3 V	85 Cel	-40 Cel	Matte Tin (Sn) - annealed	DUAL	.8 mm		3 mm				30	260	3 mm	1	CMOS			3.3 V			.4 mm	S-PDSO-N14	1			e3
ISL12022MIBZ-TR5421	Renesas Electronics	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	20	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	I2C	5.5 V				3/5	SMALL OUTLINE	SOP20,.4	Y	2.7 V	85 Cel	-40 Cel	Matte Tin (Sn) - annealed	DUAL	2.65 mm		7.5 mm			.032 MHz	30	260	12.8 mm		CMOS		SECONDS	3 V	Timer or RTC		1.27 mm	R-PDSO-G20	1	Not Qualified	NO	e3
M48T35Y-70MH1E	STMicroelectronics	TIMER, REAL TIME CLOCK	COMMERCIAL	GULL WING	28	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	PARALLEL, DIRECT ADDRESS	5.5 V				5	SMALL OUTLINE	SOP28,.5	N	4.5 V	70 Cel	0 Cel	TIN	DUAL	3.05 mm		8.56 mm		8	.032 MHz			18.1 mm	0	CMOS		SECONDS	5 V	Timers or RTCs		1.27 mm	R-PDSO-G28	3	Not Qualified	NO	e3
DS1556-70IND	Maxim Integrated	TIMER, REAL TIME CLOCK	INDUSTRIAL	PIN/PEG	32	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	PARALLEL, DIRECT ADDRESS	5.5 V				5	MICROELECTRONIC ASSEMBLY	DIP32,.6	Y	4.5 V	85 Cel	-40 Cel	TIN LEAD	DUAL	10.922 mm		15.24 mm		8	.032 MHz			43.053 mm		CMOS		SECONDS	5 V	Timer or RTC		2.54 mm	R-PDMA-P32		Not Qualified	NO	e0
DS1556-70IND+	Analog Devices	TIMER, REAL TIME CLOCK	INDUSTRIAL	PIN/PEG	32	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	PARALLEL, DIRECT ADDRESS	5.5 V				5	MICROELECTRONIC ASSEMBLY	DIP32,.6	Y	4.5 V	85 Cel	-40 Cel	Matte Tin (Sn) - annealed	DUAL	10.922 mm		15.24 mm		8	.032 MHz			43.053 mm		CMOS		SECONDS	5 V	Timer or RTC		2.54 mm	R-PDMA-P32		Not Qualified	NO	e3
MCP79510T-I/MN	Microchip Technology	TIMER, REAL TIME CLOCK	INDUSTRIAL	NO LEAD	10	HVSON	SQUARE	PLASTIC/EPOXY	YES	SERIAL(SPI)	3.6 V	8	TS 16949			SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE	SOLCC10,.12,20	Y	1.8 V	85 Cel	-40 Cel	MATTE TIN	DUAL	.8 mm	64	3 mm	ALSO OPEARTES AT 1.8V MIN SUPPLY AT 3MHZ CLOCK FREQ	0	.032 MHz			3 mm	1	CMOS	5 mA	1/100 SECOND	3 V			.5 mm	S-PDSO-N10			NO	e3
RV-4162-C7	Micro Crystal Ag	TIMER, REAL TIME CLOCK	INDUSTRIAL	NO LEAD	8	SON	RECTANGULAR	CERAMIC, METAL-SEALED COFIRED	YES	I2C	4.4 V					SMALL OUTLINE			1 V	85 Cel	-40 Cel	GOLD	DUAL	.8 mm		1.5 mm	ALSO REQUIRED 1.3V-4.4V SUPPLY FOR I2C BUS ACTIVE			20	260	3.2 mm		CMOS						.9 mm	R-CDSO-N8				e4
RX8900CE:UA	Seiko Epson	TIMER, REAL TIME CLOCK	INDUSTRIAL	NO LEAD	10	VSON	RECTANGULAR	CERAMIC, METAL-SEALED COFIRED	YES	I2C	5.5 V					SMALL OUTLINE, VERY THIN PROFILE			2.5 V	85 Cel	-40 Cel	GOLD	DUAL	1 mm		2.5 mm				30	260	3.2 mm		CMOS			3 V				R-CDSO-N10				e4
ISL12022MIBZ-T	Renesas Electronics	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	20	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	I2C; SERIAL	5.5 V					SMALL OUTLINE			2.7 V	85 Cel	-40 Cel	MATTE TIN	DUAL	2.65 mm		7.5 mm	ALSO OPERATES WITH 5 V NOMINAL	0		30	260	12.8 mm		CMOS			3 V			1.27 mm	R-PDSO-G20	1			e3
DS1305	Maxim Integrated	TIMER, REAL TIME CLOCK	COMMERCIAL	THROUGH-HOLE	16	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	SERIAL, 3-WIRE	5.5 V				3/5	IN-LINE	DIP16,.3	Y	2 V	70 Cel	0 Cel	TIN LEAD	DUAL	4.572 mm		7.62 mm		0	.032 MHz			19.175 mm	0	CMOS		SECONDS	5 V	Timer or RTC		2.54 mm	R-PDIP-T16	1	Not Qualified	YES	e0
DS1305+	Analog Devices	TIMER, REAL TIME CLOCK	COMMERCIAL	THROUGH-HOLE	16	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	SERIAL, 3-WIRE	5.5 V				3/5	IN-LINE	DIP16,.3	Y	2 V	70 Cel	0 Cel	Matte Tin (Sn) - annealed	DUAL	4.572 mm		7.62 mm		0	.032 MHz	30	260	19.175 mm	0	CMOS		SECONDS	5 V	Timer or RTC		2.54 mm	R-PDIP-T16	1	Not Qualified	YES	e3
DS1394U-33+T&R	Analog Devices		INDUSTRIAL	GULL WING	10	TSSOP	SQUARE	PLASTIC/EPOXY	YES	SERIAL, 2-WIRE/I2C	5.5 V					SMALL OUTLINE, THIN PROFILE, SHRINK PITCH			2.97 V	85 Cel	-40 Cel	Matte Tin (Sn) - annealed	DUAL	1.1 mm		3 mm			.032 MHz	30	260	3 mm	1	CMOS			3.3 V			.5 mm	S-PDSO-G10	1			e3
M41T81SM6T	STMicroelectronics	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	8	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	I2C	5.5 V					SMALL OUTLINE			2.7 V	85 Cel	-40 Cel		DUAL	1.75 mm		3.9 mm			.032 MHz			4.9 mm	1	CMOS						1.27 mm	R-PDSO-G8		Not Qualified
RV-4162-C7-32.768KHZ-20PPM-TA-QA	Micro Crystal Ag	TIMER, REAL TIME CLOCK																				GOLD								40	260														e4
RX-8581NB:B0	Seiko Epson	TIMER, REAL TIME CLOCK	INDUSTRIAL	NO LEAD	22	SON	RECTANGULAR	PLASTIC/EPOXY	YES	I2C	5.5 V				2/5	SMALL OUTLINE	SOLCC22,.2,20	Y	1.8 V	85 Cel	-40 Cel		DUAL	1.4 mm		4.8 mm	LG-MAX		.032 MHz			6.3 mm		CMOS		SECONDS	2.7 V	Timer or RTC		.5 mm	R-PDSO-N22		Not Qualified	YES
RX-8581NBB-0	Epson Toyocom	TIMER, REAL TIME CLOCK	INDUSTRIAL	NO LEAD	22	SON	RECTANGULAR	PLASTIC/EPOXY	YES	I2C	5.5 V					SMALL OUTLINE			1.8 V	85 Cel	-40 Cel	TIN/TIN SILVER	DUAL	1.4 mm		4.8 mm				NOT SPECIFIED	NOT SPECIFIED			CMOS			3 V			.5 mm	R-PDSO-N22		Not Qualified		e3/e2
DS1338C-33#T&R	Analog Devices	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	16	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	I2C	5.5 V				3.3	SMALL OUTLINE	SOP16,.4	N	3 V	85 Cel	-40 Cel	Matte Tin (Sn) - annealed	DUAL	2.67 mm		7.495 mm			.032 MHz			10.285 mm	1	CMOS		SECONDS	3.3 V	Timer or RTC		1.27 mm	R-PDSO-G16	1	Not Qualified	NO	e3
DS1685S-3	Maxim Integrated	TIMER, REAL TIME CLOCK	COMMERCIAL	GULL WING	24	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	PARALLEL, MUXED BUS	3.7 V				3	SMALL OUTLINE	SOP24,.4		2.7 V	70 Cel	0 Cel	TIN LEAD	DUAL	2.65 mm		7.5 mm		8	.032 MHz		245	15.4 mm	1	CMOS		SECONDS	3 V	Timer or RTC		1.27 mm	R-PDSO-G24		Not Qualified	YES	e0
DS1685S-3+	Analog Devices	TIMER, REAL TIME CLOCK	COMMERCIAL	GULL WING	24	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	PARALLEL, MUXED BUS	3.7 V				3	SMALL OUTLINE	SOP24,.4	Y	2.7 V	70 Cel	0 Cel	Matte Tin (Sn) - annealed	DUAL	2.65 mm		7.5 mm		8	.032 MHz	30	260	15.4 mm	1	CMOS		SECONDS	3 V	Timer or RTC		1.27 mm	R-PDSO-G24	1	Not Qualified	YES	e3
MAX16998DAUA+T	Analog Devices																					Matte Tin (Sn) - annealed												CMOS								1			e3
MCP7940MT-I/SNVAO	Microchip Technology	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	8	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	I2C	5.5 V	8	AEC-Q100; TS 16949			SMALL OUTLINE	SOP8,.23	Y	1.8 V	85 Cel	-40 Cel		DUAL	1.75 mm	64	3.9 mm		0	.032 MHz			4.9 mm	1	CMOS	.4 mA	SECONDS	2.5 V			1.27 mm	R-PDSO-G8			YES
RX-8581SA:B0	Seiko Epson	TIMER, MEMORY REFRESH	INDUSTRIAL	GULL WING	14	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	I2C	5.5 V					SMALL OUTLINE			1.8 V	85 Cel	-40 Cel	TIN	DUAL	3.3 mm		5 mm					260	10.1 mm		CMOS			3 V			1.27 mm	R-PDSO-G14				e3
RX-8581SAB-0	Seiko Epson	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	14	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	I2C	5.5 V					SMALL OUTLINE			1.8 V	85 Cel	-40 Cel		DUAL	3.3 mm		5 mm			.032 MHz			10.1 mm		CMOS			3 V			1.27 mm	R-PDSO-G14		Not Qualified
UPD71054C	Renesas Electronics	TIMER, PROGRAMMABLE	INDUSTRIAL	THROUGH-HOLE	24	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	PARALLEL, DIRECT ADDRESS	5.5 V			16		IN-LINE			4.5 V	85 Cel	-40 Cel	TIN LEAD	DUAL	5.72 mm		15.24 mm		8	8 MHz				3	CMOS			5 V			2.54 mm	R-PDIP-T24				e0
MCP79412-I/ST	Microchip Technology	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	8	TSSOP	RECTANGULAR	PLASTIC/EPOXY	YES	I2C	5.5 V	8	TS 16949		2/5	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	TSSOP8,.25	Y	1.8 V	85 Cel	-40 Cel	MATTE TIN	DUAL	1.2 mm	64	3 mm	ALSO OPERATES AT 100KHZ WITH 1.8 V NOMINAL	0	.032 MHz			4.4 mm	1	CMOS	3 mA	SECONDS	2.5 V	Timers or RTCs		.65 mm	R-PDSO-G8		Not Qualified	NO	e3
PCF2127AT/1,518	NXP Semiconductors	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	20	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	I2C	4.2 V				2/4	SMALL OUTLINE	SOP20,.4	Y	1.8 V	85 Cel	-40 Cel		DUAL	2.65 mm		7.5 mm		0	.032 MHz			12.8 mm		CMOS		SECONDS	3 V	Timers or RTCs		1.27 mm	R-PDSO-G20		Not Qualified	YES
PCF85263AUKZ	NXP Semiconductors	TIMER, REAL TIME CLOCK	INDUSTRIAL	BALL	12	VFBGA	RECTANGULAR	PLASTIC/EPOXY	YES	SERIAL(I2C)	5.5 V	8				GRID ARRAY, VERY THIN PROFILE, FINE PITCH	BGA12,3X4,10	Y	.9 V	85 Cel	-40 Cel		BOTTOM	.24 mm	1	.935 mm		0	.032768 MHz		260	1.185 mm	1	CMOS	.000885 mA	SECONDS	3.3 V			.25 mm	R-PBGA-B12	1		NO
PCF8583T/F5	NXP Semiconductors	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	8	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	I2C	6 V					SMALL OUTLINE			2.5 V	85 Cel	-40 Cel	NICKEL PALLADIUM GOLD	DUAL	2.65 mm		7.5 mm			.032 MHz			7.55 mm	0	CMOS			5 V			1.27 mm	R-PDSO-G8		Not Qualified		e4
BU9873FJ-GTE2	ROHM	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	8	LSOP	RECTANGULAR	PLASTIC/EPOXY	YES	I2C	5.5 V					SMALL OUTLINE, LOW PROFILE			1.8 V	85 Cel	-40 Cel		DUAL	1.65 mm		3.9 mm	SEATED-HGT CALCULATED			NOT SPECIFIED	NOT SPECIFIED	4.9 mm		CMOS			3 V			1.27 mm	R-PDSO-G8
DS12C887A	Maxim Integrated	TIMER, REAL TIME CLOCK	COMMERCIAL	THROUGH-HOLE	24	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	PARALLEL, MUXED BUS	5.5 V				5	IN-LINE	DIP24,.6	Y	4.5 V	70 Cel	0 Cel	TIN LEAD	DUAL	9.398 mm		15.24 mm		8	.032 MHz			33.782 mm	1	CMOS		SECONDS	5 V	Timer or RTC		2.54 mm	R-PDIP-T24	1	Not Qualified	NO	e0
DS12C887A+	Analog Devices	TIMER, PROGRAMMABLE	COMMERCIAL	THROUGH-HOLE	24	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	PARALLEL, MUXED BUS	5.5 V				5	IN-LINE	DIP24,.6	Y	4.5 V	70 Cel	0 Cel	Matte Tin (Sn) - annealed	DUAL	9.398 mm		15.24 mm		8	.032 MHz			33.782 mm	1	CMOS		SECONDS	5 V	Timer or RTC		2.54 mm	R-PDIP-T24		Not Qualified	NO	e3
DS1302S-16	Maxim Integrated	TIMER, REAL TIME CLOCK	COMMERCIAL	GULL WING	16	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	SERIAL, 3-WIRE	5.5 V				3/5	SMALL OUTLINE	SOP16,.4	N	2 V	70 Cel	0 Cel	TIN LEAD	DUAL	2.65 mm		7.5 mm	BURST MODE RAM DATA TRANSFER; TIMEKEEPING CURRENT = 0.3UA		.032 MHz			10.3 mm	0	CMOS		SECONDS	3.3 V	Timer or RTC		1.27 mm	R-PDSO-G16	1	Not Qualified	NO	e0
ID82C54	Renesas Electronics	TIMER, PROGRAMMABLE	INDUSTRIAL	THROUGH-HOLE	24	DIP	RECTANGULAR	CERAMIC, METAL-SEALED COFIRED	NO	PARALLEL, DIRECT ADDRESS	5.5 V			16		IN-LINE			4.5 V	85 Cel	-40 Cel	TIN LEAD	DUAL	5.72 mm		15.24 mm		8	8 MHz				3	CMOS			5 V			2.54 mm	R-CDIP-T24		Not Qualified		e0
M41T11MH6F	STMicroelectronics	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	28	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	I2C	5.5 V				2.5/5	SMALL OUTLINE	SOP28,.5	N	3.3 V	85 Cel	-40 Cel	MATTE TIN	DUAL	3.05 mm		8.56 mm			.032 MHz	30	225	18.1 mm		CMOS		SECONDS		Timer or RTC		1.27 mm	R-PDSO-G28	3	Not Qualified	NO	e3
MCP795W20-I/ST	Microchip Technology	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	14	TSSOP	RECTANGULAR	PLASTIC/EPOXY	YES	SERIAL(SPI)	3.6 V	8	TS 16949	8	2/5	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	TSSOP14,.25	Y	1.8 V	85 Cel	-40 Cel	MATTE TIN	DUAL	1.2 mm	64	4.4 mm	ALSO OPEARTES AT 1.8 V MINIMUM SUPPLY AT 3 MHZ	0	.032 MHz	40	260	5 mm	1	CMOS	5 mA	1/100 SECOND	3 V	Timer or RTC		.65 mm	R-PDSO-G14	1	Not Qualified	NO	e3
PCF8593T,118	NXP Semiconductors		INDUSTRIAL	GULL WING	8	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	SERIAL, 2 WIRE/I2C					3/5	SMALL OUTLINE	SOP8,.25	Y		85 Cel	-40 Cel		DUAL											CMOS		1/100 SECOND		Timers or RTCs		1.27 mm	R-PDSO-G8		Not Qualified	YES
RV-8263-C7-32.768KHZ-20PPM-TA-QC	Micro Crystal Ag	TIMER, REAL TIME CLOCK																				GOLD								40	260														e4
PCF2127AT	NXP Semiconductors	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	20	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	I2C	4.2 V					SMALL OUTLINE			1.8 V	85 Cel	-40 Cel		DUAL	2.65 mm		7.5 mm						12.8 mm	1	CMOS			2 V			1.27 mm	R-PDSO-G20
PCF8583T	NXP Semiconductors	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	8	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	I2C	6 V	8			3/5	SMALL OUTLINE	SOP8,.4	Y	2.5 V	85 Cel	-40 Cel		DUAL	2.65 mm	248	7.5 mm	TIMEKEEPING CURRENT = 10UA; AUTO WORD INCREMENTING		.1 MHz	40	260	7.55 mm	0	CMOS	.2 mA	1/100 SECOND	5 V	Timer or RTC		1.27 mm	R-PDSO-G8		Not Qualified	YES
DS12885QN	Maxim Integrated	TIMER, REAL TIME CLOCK	INDUSTRIAL	J BEND	28	QCCJ	SQUARE	PLASTIC/EPOXY	YES	PARALLEL, MUXED BUS	5.5 V				5	CHIP CARRIER	LDCC28,.5SQ	Y	4.5 V	85 Cel	-40 Cel	TIN LEAD	QUAD	4.57 mm		11.505 mm	DAYLIGHT SAVINGS OPTION; SELECTABLE MOTOROLA/INTEL TIMING	8	.032 MHz		245	11.505 mm	1	CMOS		SECONDS	5 V	Timer or RTC		1.27 mm	S-PQCC-J28	1	Not Qualified	YES	e0
DS12885QN+	Analog Devices	TIMER, PROGRAMMABLE	INDUSTRIAL	J BEND	28	QCCJ	SQUARE	PLASTIC/EPOXY	YES	PARALLEL, MUXED BUS	5.5 V				5	CHIP CARRIER	LDCC28,.5SQ	Y	4.5 V	85 Cel	-40 Cel	Matte Tin (Sn) - annealed	QUAD	4.57 mm		11.505 mm	DAYLIGHT SAVINGS OPTION; SELECTABLE MOTOROLA/INTEL TIMING	8	.032 MHz		245	11.505 mm	1	CMOS		SECONDS	5 V	Timer or RTC		1.27 mm	S-PQCC-J28	1	Not Qualified	NO	e3
DS1744P-70IND	Maxim Integrated	TIMER, REAL TIME CLOCK	INDUSTRIAL	J INVERTED	34		RECTANGULAR	UNSPECIFIED	YES	PARALLEL, DIRECT ADDRESS	5.5 V				5	MICROELECTRONIC ASSEMBLY	MODULE,34LEAD,1.0	N	4.5 V	85 Cel	-40 Cel	TIN LEAD	DUAL					8	.032 MHz				0	CMOS		SECONDS	5 V	Timer or RTC			R-XDMA-U34		Not Qualified	NO	e0
DS1744P-70IND+	Analog Devices	TIMER, REAL TIME CLOCK	INDUSTRIAL	J INVERTED	34		RECTANGULAR	UNSPECIFIED	YES	PARALLEL, DIRECT ADDRESS	5.5 V				5	MICROELECTRONIC ASSEMBLY	MODULE,34LEAD,1.0	N	4.5 V	85 Cel	-40 Cel	Matte Tin (Sn) - annealed	DUAL	2.3368 mm		23.495 mm		8	.032 MHz			25.019 mm	0	CMOS		SECONDS	5 V	Timer or RTC		1.27 mm	R-XDMA-U34		Not Qualified	NO	e3
M41T65Q6F	STMicroelectronics	TIMER, REAL TIME CLOCK	INDUSTRIAL	NO LEAD	16	HVQCCN	SQUARE	UNSPECIFIED	YES	I2C	4.4 V				1.5/3	CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE	LCC16,.12SQ,20	Y	1.3 V	85 Cel	-40 Cel	Matte Tin (Sn) - annealed	QUAD	1 mm		3 mm			.032 MHz	30	260	3 mm	1	CMOS		1/100 SECOND	2 V	Timer or RTC		.5 mm	S-XQCC-N16	1	Not Qualified	YES	e3

Timers and real-time clocks (RTCs) are electronic devices that are used to measure and track time intervals in electronic systems. They are crucial components in many applications, such as control systems, automation systems, and consumer electronics.

A timer is an electronic device that is used to measure the duration of time intervals. Timers can be either digital or analog and can be used to measure time intervals ranging from microseconds to hours or even days. They can be used for a variety of applications, such as controlling the duration of a signal or triggering an event after a specified time interval.

A real-time clock (RTC) is a clock that keeps track of the current time and date. Unlike a timer, an RTC is capable of keeping track of time even when the system is powered off. RTCs are commonly used in consumer electronics such as watches, clocks, and digital cameras, as well as in control systems, data loggers, and other applications that require accurate timekeeping.