28 Timers & Real-Time Clocks 609

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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	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	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	Terminal Pitch	JESD-30 Code	Moisture Sensitivity Level (MSL)	Qualification	Volatile	JESD-609 Code
BQ4845YS-A4N	Texas Instruments	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	28	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	PARALLEL, DIRECT ADDRESS	5.5 V	5	SMALL OUTLINE	SOP28,.4	Y	4.5 V	85 Cel	-40 Cel	NICKEL PALLADIUM GOLD	DUAL	2.667 mm	7.5565 mm		8	.032 MHz	30	260	17.9705 mm	1	CMOS		SECONDS	5 V	Timer or RTC	1.27 mm	R-PDSO-G28	1	Not Qualified	NO	e4
BQ4802LYPW	Texas Instruments	TIMER, REAL TIME CLOCK	COMMERCIAL	GULL WING	28	TSSOP	RECTANGULAR	PLASTIC/EPOXY	YES	PARALLEL, DIRECT ADDRESS	3.6 V	3.3	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	TSSOP28,.25	Y	2.7 V	70 Cel	0 Cel	NICKEL PALLADIUM GOLD	DUAL	1.2 mm	4.4 mm		8	.032 MHz	30	260	9.7 mm	1	CMOS	9 mA	SECONDS	3 V	Timer or RTC	.65 mm	R-PDSO-G28	1	Not Qualified	YES	e4
BQ4802TS	Texas Instruments	TIMER, REAL TIME CLOCK	COMMERCIAL	GULL WING	28	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	PARALLEL, DIRECT ADDRESS			SMALL OUTLINE				70 Cel	0 Cel		DUAL				8					0	CMOS			3.3 V			R-PDSO-G28		Not Qualified
BQ4845YS	Texas Instruments	TIMER, REAL TIME CLOCK	COMMERCIAL	GULL WING	28	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	PARALLEL, DIRECT ADDRESS	5.5 V	5	SMALL OUTLINE	SOP28,.4	Y	4.5 V	70 Cel	0 Cel		DUAL				8	.032 MHz				0	CMOS		SECONDS	5 V	Timer or RTC	1.27 mm	R-PDSO-G28		Not Qualified	YES
BQ3285Q	Texas Instruments	TIMER, REAL TIME CLOCK	COMMERCIAL	J BEND	28	QCCJ	SQUARE	PLASTIC/EPOXY	YES	PARALLEL, MUXED BUS	5.5 V	5	CHIP CARRIER	LDCC28,.5SQ	Y	4.5 V	70 Cel	0 Cel		QUAD				8	.032 MHz	NOT SPECIFIED	NOT SPECIFIED		1	CMOS		SECONDS	5 V	Timer or RTC	1.27 mm	S-PQCC-J28		Not Qualified	YES
BQ4845P-A4	Texas Instruments	TIMER, REAL TIME CLOCK	COMMERCIAL	THROUGH-HOLE	28	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	PARALLEL, DIRECT ADDRESS	5.5 V	5	IN-LINE	DIP28,.6	Y	4.75 V	70 Cel	0 Cel	MATTE TIN	DUAL	4.826 mm	15.24 mm		8	.032 MHz			37.084 mm	1	CMOS		SECONDS	5 V	Timer or RTC	2.54 mm	R-PDIP-T28		Not Qualified	NO	e3
BQ4823YSH-70	Texas Instruments	TIMER, REAL TIME CLOCK	COMMERCIAL	GULL WING	28	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	PARALLEL, DIRECT ADDRESS	5.5 V		SMALL OUTLINE			4.5 V	70 Cel	0 Cel		DUAL				8					0	CMOS			5 V			R-PDSO-G28		Not Qualified
BQ4802LYDWG4	Texas Instruments	TIMER, REAL TIME CLOCK	COMMERCIAL	GULL WING	28	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	PARALLEL, DIRECT ADDRESS	3.6 V	3.3	SMALL OUTLINE	SOP28,.4	Y	2.7 V	70 Cel	0 Cel	NICKEL PALLADIUM GOLD	DUAL	2.65 mm	7.5 mm		8	.032 MHz	30	260	17.9 mm	1	CMOS	9 mA	SECONDS	3.3 V	Timer or RTC	1.27 mm	R-PDSO-G28	1	Not Qualified	YES	e4
BQ4802LYDSHR	Texas Instruments	TIMER, REAL TIME CLOCK	COMMERCIAL	GULL WING	28	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	PARALLEL, DIRECT ADDRESS	3.6 V	3/3.3	SMALL OUTLINE	SOP28,.5	Y	2.7 V	70 Cel	0 Cel	TIN LEAD	DUAL	3.05 mm	8.56 mm		8	.032 MHz			18.095 mm	1	CMOS		SECONDS	3.3 V	Timer or RTC	1.27 mm	R-PDSO-G28		Not Qualified	NO	e0
BQ4845YS-A4G4	Texas Instruments	TIMER, REAL TIME CLOCK	COMMERCIAL	GULL WING	28	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	PARALLEL, DIRECT ADDRESS	5.5 V	5	SMALL OUTLINE	SOP28,.4	Y	4.5 V	70 Cel	0 Cel	NICKEL PALLADIUM GOLD	DUAL	2.667 mm	7.5565 mm		8	.032 MHz	30	260	17.9705 mm	1	CMOS		SECONDS	5 V	Timer or RTC	1.27 mm	R-PDSO-G28	1	Not Qualified	NO	e4
BQ4845PN	Texas Instruments	TIMER, REAL TIME CLOCK	INDUSTRIAL	THROUGH-HOLE	28	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	PARALLEL, DIRECT ADDRESS	5.5 V	5	IN-LINE	DIP28,.6	Y	4.75 V	85 Cel	-40 Cel		DUAL				8	.032 MHz				0	CMOS		SECONDS	5 V	Timer or RTC	2.54 mm	R-PDIP-T28		Not Qualified	YES
BQ4830YMA-85	Texas Instruments	TIMER, REAL TIME CLOCK	COMMERCIAL	THROUGH-HOLE	28	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	PARALLEL, DIRECT ADDRESS	5.5 V	5	MICROELECTRONIC ASSEMBLY	DIP28,.6	N	4.5 V	70 Cel	0 Cel		DUAL				8	.032 MHz	NOT SPECIFIED	NOT SPECIFIED		0	CMOS		SECONDS	5 V	Timer or RTC	2.54 mm	R-PDMA-T28		Not Qualified	NO
BQ4845YP-A4	Texas Instruments	TIMER, REAL TIME CLOCK	COMMERCIAL	THROUGH-HOLE	28	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	PARALLEL, DIRECT ADDRESS	5.5 V	5	IN-LINE	DIP28,.6	Y	4.5 V	70 Cel	0 Cel		DUAL	4.826 mm	15.24 mm		8	.032 MHz	NOT SPECIFIED	NOT SPECIFIED	37.084 mm	1	CMOS		SECONDS	5 V	Timer or RTC	2.54 mm	R-PDIP-T28		Not Qualified	NO
BQ3285LQ	Texas Instruments		COMMERCIAL	J BEND	28	QCCJ	SQUARE	PLASTIC/EPOXY	YES	PARALLEL		3.15	CHIP CARRIER	LDCC28,.5SQ	Y		70 Cel	0 Cel		QUAD										CMOS		SECONDS	3.15 V	Timer or RTC	1.27 mm	S-PQCC-J28		Not Qualified	YES
BQ4845SN	Texas Instruments	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	28	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	PARALLEL, DIRECT ADDRESS	5.5 V	5	SMALL OUTLINE	SOP28,.4	Y	4.75 V	85 Cel	-40 Cel		DUAL				8	.032 MHz				0	CMOS		SECONDS	5 V	Timer or RTC	1.27 mm	R-PDSO-G28		Not Qualified	YES
BQ4802YDSH	Texas Instruments	TIMER, REAL TIME CLOCK	COMMERCIAL	GULL WING	28	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	PARALLEL, DIRECT ADDRESS	5.5 V	5	SMALL OUTLINE	SOP28,.5	Y	4.5 V	70 Cel	0 Cel		DUAL	3.05 mm	8.56 mm		8	.032 MHz	NOT SPECIFIED	NOT SPECIFIED	18.095 mm	1	CMOS		SECONDS	5 V	Timer or RTC	1.27 mm	R-PDSO-G28		Not Qualified	NO
BQ4802LYPWG4	Texas Instruments	TIMER, REAL TIME CLOCK	COMMERCIAL	GULL WING	28	TSSOP	RECTANGULAR	PLASTIC/EPOXY	YES	PARALLEL, DIRECT ADDRESS	3.6 V	3/3.3	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	TSSOP28,.25	Y	2.7 V	70 Cel	0 Cel	NICKEL PALLADIUM GOLD	DUAL	1.2 mm	4.4 mm		8	.032 MHz	30	260	9.7 mm	1	CMOS	9 mA	SECONDS	3.3 V	Timer or RTC	.65 mm	R-PDSO-G28	1	Not Qualified	NO	e4
BQ4845S	Texas Instruments	TIMER, REAL TIME CLOCK	COMMERCIAL	GULL WING	28	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	PARALLEL, DIRECT ADDRESS	5.5 V	5	SMALL OUTLINE	SOP28,.4	Y	4.75 V	70 Cel	0 Cel		DUAL				8	.032 MHz				0	CMOS		SECONDS	5 V	Timer or RTC	1.27 mm	R-PDSO-G28		Not Qualified	YES
BQ4802MA	Texas Instruments	TIMER, REAL TIME CLOCK	COMMERCIAL	THROUGH-HOLE	28		RECTANGULAR	UNSPECIFIED	NO	PARALLEL, DIRECT ADDRESS			MICROELECTRONIC ASSEMBLY				70 Cel	0 Cel		DUAL				8					0	CMOS			3.3 V			R-XDMA-T28		Not Qualified
BQ4802P	Texas Instruments	TIMER, REAL TIME CLOCK	COMMERCIAL	THROUGH-HOLE	28	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	PARALLEL, DIRECT ADDRESS			IN-LINE				70 Cel	0 Cel		DUAL				8					0	CMOS			3.3 V			R-PDIP-T28		Not Qualified
BQ4847Y-MT	Texas Instruments	TIMER, REAL TIME CLOCK	COMMERCIAL	THROUGH-HOLE	28	DIP	RECTANGULAR	UNSPECIFIED	NO	PARALLEL, DIRECT ADDRESS	5.5 V	5	MICROELECTRONIC ASSEMBLY	DIP28,.6	Y	4.5 V	70 Cel	0 Cel		DUAL				8		NOT SPECIFIED	NOT SPECIFIED		0	CMOS		SECONDS	5 V	Timer or RTC	2.54 mm	R-XDMA-T28		Not Qualified	NO
BQ4847-MT	Texas Instruments	TIMER, REAL TIME CLOCK	COMMERCIAL	THROUGH-HOLE	28	DIP	RECTANGULAR	UNSPECIFIED	NO	PARALLEL, DIRECT ADDRESS	5.25 V	5	MICROELECTRONIC ASSEMBLY	DIP28,.6	Y	4.75 V	70 Cel	0 Cel		DUAL				8		NOT SPECIFIED	NOT SPECIFIED		0	CMOS		SECONDS	5 V	Timer or RTC	2.54 mm	R-XDMA-T28		Not Qualified	NO
BQ4845YS-A4TR	Texas Instruments	TIMER, REAL TIME CLOCK	COMMERCIAL	GULL WING	28	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	PARALLEL, DIRECT ADDRESS	5.5 V	5	SMALL OUTLINE	SOP28,.4	Y	4.5 V	70 Cel	0 Cel	NICKEL PALLADIUM GOLD	DUAL	2.667 mm	7.5565 mm		8	.032 MHz	30	260	17.9705 mm	1	CMOS		SECONDS	5 V	Timer or RTC	1.27 mm	R-PDSO-G28	1	Not Qualified	NO	e4
BQ4822YMA-70	Texas Instruments	TIMER, REAL TIME CLOCK	COMMERCIAL	THROUGH-HOLE	28	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	PARALLEL, DIRECT ADDRESS	5.5 V	5	MICROELECTRONIC ASSEMBLY	DIP28,.6	Y	4.5 V	70 Cel	0 Cel		DUAL				8	.032 MHz	NOT SPECIFIED	NOT SPECIFIED		0	CMOS		1/100 SECOND	5 V	Timer or RTC	2.54 mm	R-PDMA-T28		Not Qualified	NO
BQ4802YDW	Texas Instruments	TIMER, REAL TIME CLOCK	COMMERCIAL	GULL WING	28	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	PARALLEL, DIRECT ADDRESS	5.5 V	5	SMALL OUTLINE	SOP28,.4	Y	4.5 V	70 Cel	0 Cel	NICKEL PALLADIUM GOLD	DUAL	2.65 mm	7.5 mm		8	.032 MHz	30	260	17.9 mm	1	CMOS	9 mA	SECONDS	5 V	Timer or RTC	1.27 mm	R-PDSO-G28	1	Not Qualified	YES	e4
BQ4845YS-A4TRG4	Texas Instruments	TIMER, REAL TIME CLOCK	COMMERCIAL	GULL WING	28	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	PARALLEL, DIRECT ADDRESS	5.5 V	5	SMALL OUTLINE	SOP28,.4	Y	4.5 V	70 Cel	0 Cel		DUAL	2.667 mm	7.5565 mm		8	.032 MHz	NOT SPECIFIED	NOT SPECIFIED	17.9705 mm	1	CMOS		SECONDS	5 V	Timer or RTC	1.27 mm	R-PDSO-G28		Not Qualified	NO
BQ4845YS-A4NTR	Texas Instruments	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	28	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	PARALLEL, DIRECT ADDRESS	5.5 V	5	SMALL OUTLINE	SOP28,.4	Y	4.5 V	85 Cel	-40 Cel	NICKEL PALLADIUM GOLD	DUAL	2.667 mm	7.5565 mm		8	.032 MHz	30	260	17.9705 mm	1	CMOS		SECONDS	5 V	Timer or RTC	1.27 mm	R-PDSO-G28	1	Not Qualified	NO	e4
BQ4845YS-A4	Texas Instruments	TIMER, REAL TIME CLOCK	COMMERCIAL	GULL WING	28	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	PARALLEL, DIRECT ADDRESS	5.5 V	5	SMALL OUTLINE	SOP28,.4	Y	4.5 V	70 Cel	0 Cel	NICKEL PALLADIUM GOLD	DUAL	2.667 mm	7.5565 mm		8	.032 MHz	30	260	17.9705 mm	1	CMOS		SECONDS	5 V	Timer or RTC	1.27 mm	R-PDSO-G28	1	Not Qualified	NO	e4
DS1497	Analog Devices		COMMERCIAL	THROUGH-HOLE	28	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	PARALLEL		5	IN-LINE	DIP28,.6	Y		70 Cel	0 Cel	TIN LEAD	DUAL										CMOS		SECONDS	5 V	Timer or RTC	2.54 mm	R-PDIP-T28		Not Qualified	NO	e0
DS1495S	Analog Devices		COMMERCIAL	GULL WING	28	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	PARALLEL		5	SMALL OUTLINE	SOP28,.5	Y		70 Cel	0 Cel	TIN LEAD	DUAL										CMOS		SECONDS	5 V	Timer or RTC	1.27 mm	R-PDSO-G28		Not Qualified	YES	e0
DS1501YE+T&R	Analog Devices	TIMER, REAL TIME CLOCK	COMMERCIAL	GULL WING	28	TSSOP	RECTANGULAR	PLASTIC/EPOXY	YES	PARALLEL, DIRECT ADDRESS	5.5 V	5	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	TSSOP28,.53,22	Y	4.5 V	70 Cel	0 Cel	Matte Tin (Sn) - annealed	DUAL	1.2 mm	8 mm		8	.032 MHz			11.8 mm	1	CMOS		SECONDS	5 V	Timers or RTCs	.55 mm	R-PDSO-G28	3	Not Qualified	YES	e3
DS16440120+	Analog Devices	TIMER, REAL TIME CLOCK	COMMERCIAL	THROUGH-HOLE	28	DIP	RECTANGULAR	UNSPECIFIED	NO	PARALLEL, DIRECT ADDRESS	5.5 V		IN-LINE			4.5 V	70 Cel	0 Cel	Matte Tin (Sn) - annealed	DUAL	9.27 mm	15.24 mm		8	.032 MHz			37.595 mm		CMOS			5 V		2.54 mm	R-XDIP-T28		Not Qualified		e3
DS1244P-70	Analog Devices	TIMER, REAL TIME CLOCK	COMMERCIAL	PIN/PEG	28	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	PARALLEL, DIRECT ADDRESS	5.5 V		IN-LINE			4.5 V	70 Cel	0 Cel	TIN LEAD	DUAL	9.398 mm	15.24 mm		8				38.862 mm	0	CMOS			5 V		2.54 mm	R-PDIP-P28		Not Qualified		e0
DS1501WZ+T&R	Analog Devices	TIMER, REAL TIME CLOCK	COMMERCIAL	GULL WING	28	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	PARALLEL, DIRECT ADDRESS	3.6 V	3.3	SMALL OUTLINE	SOP28,.4	Y	3 V	70 Cel	0 Cel	Matte Tin (Sn) - annealed	DUAL	2.65 mm	7.5 mm		8	.032 MHz	30	260	17.9 mm	1	CMOS		SECONDS	3.3 V	Timers or RTCs	1.27 mm	R-PDSO-G28	1	Not Qualified	YES	e3
DS1216B-3.3V	Analog Devices	TIMER, REAL TIME CLOCK	COMMERCIAL	THROUGH-HOLE	28		RECTANGULAR	UNSPECIFIED	NO	SERIAL, FIXED PROTOCOL	3.6 V		MICROELECTRONIC ASSEMBLY			3 V	70 Cel	0 Cel	TIN LEAD	DUAL									0	CMOS			3.3 V			R-XDMA-T28		Not Qualified		e0
DS12885Q+	Analog Devices	TIMER, PROGRAMMABLE	COMMERCIAL	J BEND	28	QCCJ	SQUARE	PLASTIC/EPOXY	YES	PARALLEL, MUXED BUS	5.5 V	5	CHIP CARRIER	LDCC28,.5SQ	Y	4.5 V	70 Cel	0 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
DS1244W-120IND+	Analog Devices	TIMER, REAL TIME CLOCK	INDUSTRIAL	PIN/PEG	28	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	PARALLEL, DIRECT ADDRESS	3.63 V	3.3	IN-LINE	DIP28,.6	N	2.97 V	85 Cel	-40 Cel	Matte Tin (Sn) - annealed	DUAL	9.398 mm	15.24 mm		8				38.862 mm		CMOS		1/100 SECOND	3.3 V	Timer or RTC	2.54 mm	R-PDIP-P28		Not Qualified	YES	e3
DS1501YZ+	Analog Devices	TIMER, REAL TIME CLOCK	COMMERCIAL	GULL WING	28	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	PARALLEL, DIRECT ADDRESS	5.5 V	5	SMALL OUTLINE	SOP28,.4	Y	4.5 V	70 Cel	0 Cel	Matte Tin (Sn) - annealed	DUAL	2.65 mm	7.5 mm		8	.032 MHz	30	260	17.9 mm	1	CMOS		SECONDS	5 V	Timers or RTCs	1.27 mm	R-PDSO-G28	1	Not Qualified	YES	e3
DS1744	Analog Devices	TIMER, REAL TIME CLOCK	COMMERCIAL	PIN/PEG	28	DIP	RECTANGULAR	UNSPECIFIED	NO	PARALLEL, DIRECT ADDRESS	5.5 V	5	MICROELECTRONIC ASSEMBLY	DIP28,.6	N	4.5 V	70 Cel	0 Cel	TIN LEAD	DUAL				8	.032 MHz					CMOS		SECONDS	5 V	Timer or RTC	2.54 mm	R-XDMA-P28		Not Qualified	NO	e0
DS1553W-150+	Analog Devices		COMMERCIAL	THROUGH-HOLE	28	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	PARALLEL		3.3	IN-LINE	DIP28,.6	Y		70 Cel	0 Cel		DUAL						30	260			CMOS		SECONDS	3.3 V	Timer or RTC	2.54 mm	R-PDIP-T28		Not Qualified	NO
DS1244W-120+	Analog Devices	TIMER, REAL TIME CLOCK	COMMERCIAL	PIN/PEG	28	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	PARALLEL, DIRECT ADDRESS	3.63 V	3.3	IN-LINE	DIP28,.6	N	2.97 V	70 Cel	0 Cel	Matte Tin (Sn) - annealed	DUAL	9.398 mm	15.24 mm		8				38.862 mm		CMOS		1/100 SECOND	3.3 V	Timer or RTC	2.54 mm	R-PDIP-P28		Not Qualified	YES	e3
DS1685Q-5+	Analog Devices	TIMER, REAL TIME CLOCK	COMMERCIAL	J BEND	28	QCCJ	SQUARE	PLASTIC/EPOXY	YES	PARALLEL, MUXED BUS	5.5 V	5	CHIP CARRIER	LDCC28,.5SQ	Y	4.5 V	70 Cel	0 Cel	Matte Tin (Sn) - annealed	QUAD	4.57 mm	11.505 mm		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	e3
DS1593	Analog Devices		COMMERCIAL	THROUGH-HOLE	28	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	PARALLEL		5	IN-LINE	DIP28,.6	Y		70 Cel	0 Cel	TIN LEAD	DUAL										CMOS		SECONDS	5 V	Timer or RTC	2.54 mm	R-PDIP-T28		Not Qualified	NO	e0
DS1743W-150IND+	Analog Devices	TIMER, REAL TIME CLOCK	INDUSTRIAL	PIN/PEG	28	QIP	RECTANGULAR	UNSPECIFIED	NO	PARALLEL, DIRECT ADDRESS	3.63 V	3.3	MICROELECTRONIC ASSEMBLY	DIP28,.6	N	2.97 V	85 Cel	-40 Cel	Matte Tin (Sn) - annealed	DUAL	10.67 mm	15.24 mm		8	.032 MHz			38.225 mm	0	CMOS		SECONDS	3.3 V	Timers or RTCs	2.54 mm	R-XDMA-P28		Not Qualified	NO	e3
DS1501YZ+T&R	Analog Devices	TIMER, REAL TIME CLOCK	COMMERCIAL	GULL WING	28	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	PARALLEL, DIRECT ADDRESS	5.5 V	5	SMALL OUTLINE	SOP28,.4	Y	4.5 V	70 Cel	0 Cel	Matte Tin (Sn) - annealed	DUAL	2.65 mm	7.5 mm		8	.032 MHz	30	260	17.9 mm	1	CMOS		SECONDS	5 V	Timers or RTCs	1.27 mm	R-PDSO-G28	1	Not Qualified	YES	e3
DS1744+100	Analog Devices	TIMER, REAL TIME CLOCK	COMMERCIAL	PIN/PEG	28	QIP	RECTANGULAR	UNSPECIFIED	NO	PARALLEL, DIRECT ADDRESS	5.5 V	5	IN-LINE	DIP32,.6	N	4.5 V	70 Cel	0 Cel	Matte Tin (Sn) - annealed	DUAL	9.02 mm	15.24 mm		8	.032 MHz			37.595 mm	0	CMOS		SECONDS	5 V	Timer or RTC	2.54 mm	R-XDIP-P28		Not Qualified	NO	e3
DS1668S	Analog Devices	TIMER, REAL TIME CLOCK		GULL WING	28	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	PARALLEL, MUXED BUS			SMALL OUTLINE						TIN LEAD	DUAL			ALSO OPERATES AT 5V SUPPLY	8					1	CMOS			3 V			R-PDSO-G28	1	Not Qualified		e0
DS1685QN-5+	Analog Devices	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	Matte Tin (Sn) - annealed	QUAD	4.57 mm	11.505 mm		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	e3

Timers & Real-Time Clocks

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.