THROUGH-HOLE Timers & Real-Time Clocks 573

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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	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	Qualification	Volatile	JESD-609 Code
MD82C54	Renesas Electronics	TIMER, PROGRAMMABLE	MILITARY	THROUGH-HOLE	24	DIP	RECTANGULAR	CERAMIC, METAL-SEALED COFIRED	NO	PARALLEL, DIRECT ADDRESS	5.5 V		16		IN-LINE		N	4.5 V	125 Cel	-55 Cel		DUAL					8	8 MHz				3	CMOS	10 mA		5 V				R-CDIP-T24		NO
MD82C54/B	Renesas Electronics	TIMER, PROGRAMMABLE	MILITARY	THROUGH-HOLE	24	DIP	RECTANGULAR	CERAMIC, METAL-SEALED COFIRED	NO	PARALLEL, DIRECT ADDRESS	5.5 V		16		IN-LINE			4.5 V	125 Cel	-55 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
MM58274CJ	Texas Instruments	TIMER, REAL TIME CLOCK	INDUSTRIAL	THROUGH-HOLE	16	DIP	RECTANGULAR	CERAMIC, GLASS-SEALED	NO	PARALLEL, DIRECT ADDRESS	5.5 V				IN-LINE			4.5 V	85 Cel	-40 Cel		DUAL	5.08 mm		7.62 mm	LG-MAX	4				19.94 mm	0	CMOS			5 V			2.54 mm	R-GDIP-T16
TMP82C54P-2	Toshiba	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	4.8 mm		15.24 mm	6 PROGRAMMABLE MODES	8				32 mm	3	CMOS	30 mA		5 V			2.54 mm	R-PDIP-T24	Not Qualified		e0
AM9513APC	Rochester Electronics	TIMER, PROGRAMMABLE	COMMERCIAL	THROUGH-HOLE	40	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	PARALLEL, DIRECT ADDRESS	5.25 V		16		IN-LINE			4.75 V	70 Cel	0 Cel		DUAL	5.715 mm		15.24 mm		16		NOT SPECIFIED	NOT SPECIFIED	52.324 mm	5	MOS			5 V			2.54 mm	R-PDIP-T40
CP82C54	Renesas Electronics	TIMER, PROGRAMMABLE	COMMERCIAL	THROUGH-HOLE	24	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	PARALLEL, DIRECT ADDRESS	5.5 V		16		IN-LINE			4.5 V	70 Cel	0 Cel	TIN LEAD	DUAL	6.35 mm		15.24 mm		8	8 MHz			31 mm	3	CMOS			5 V			2.54 mm	R-PDIP-T24	Not Qualified		e0
DS1511Y	Maxim Integrated	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	TIN LEAD	DUAL	9.398 mm		15.24 mm		8	.032 MHz			38.862 mm	1	CMOS		SECONDS	5 V	Timer or RTC		2.54 mm	R-PDIP-T28	Not Qualified	NO	e0
DS1511Y+	Analog Devices	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	Matte Tin (Sn) - annealed	DUAL	9.398 mm		15.24 mm		8	.032 MHz			38.862 mm	1	CMOS		SECONDS	5 V	Timers or RTCs		2.54 mm	R-PDIP-T28	Not Qualified	YES	e3
DS1554-70+	Analog Devices	TIMER, REAL TIME CLOCK	COMMERCIAL	THROUGH-HOLE	32	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	PARALLEL, DIRECT ADDRESS	5.5 V			5	IN-LINE	DIP32,.6	Y	4.5 V	70 Cel	0 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-PDIP-T32	Not Qualified	NO	e3
HD6340P	Hitachi	TIMER, PROGRAMMABLE	COMMERCIAL EXTENDED	THROUGH-HOLE	28	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	PARALLEL, DIRECT ADDRESS	5.5 V		16		IN-LINE			4.5 V	75 Cel	-20 Cel	TIN LEAD	DUAL	5.7 mm		15.24 mm	PRESCALED /8 TIMER 3 I/P	8	1 MHz			35.6 mm	3	CMOS	5 mA		5 V		HMCS6800	2.54 mm	R-PDIP-T28	Not Qualified		e0
M48T18-100PC1	STMicroelectronics	TIMER, REAL TIME CLOCK	COMMERCIAL	THROUGH-HOLE	28	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	PARALLEL, DIRECT ADDRESS	5.5 V	8			IN-LINE	DIP28,.6	N	4.5 V	70 Cel	0 Cel	MATTE TIN	DUAL	9.65 mm	8184	15.24 mm	10 YEARS DATA RETENTION; ACCURACY 1 MIN/MONTH @ 25 DEGREE C; WRITE PROTECT VOLTAGE = 4.5V	8	.032 MHz			39.625 mm	0	CMOS	80 mA	SECONDS	5 V	Timer or RTC		2.54 mm	R-PDIP-T28	Not Qualified	NO	e3
MK48T02B15	STMicroelectronics	TIMER, REAL TIME CLOCK	COMMERCIAL	THROUGH-HOLE	24	DIP	RECTANGULAR	UNSPECIFIED	NO	PARALLEL, DIRECT ADDRESS	5.5 V	8		5	MICROELECTRONIC ASSEMBLY	DIP24,.6	N	4.75 V	70 Cel	0 Cel	TIN LEAD	DUAL		2040		WRITE PROTECT VOLTAGE = 4.5V; ACCURACY 1 MIN/MONTH @ 25 DEGREE C; 11 YEARS DATA RETENTION @ 70 DEG C	8					0	CMOS	80 mA	SECONDS	5 V	Timer or RTC		2.54 mm	R-XDMA-T24	Not Qualified	NO	e0
P8253-5	Rochester Electronics	TIMER, PROGRAMMABLE	COMMERCIAL	THROUGH-HOLE	24	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	PARALLEL, DIRECT ADDRESS	5.5 V		16		IN-LINE			4.5 V	70 Cel	0 Cel		DUAL				PROGRAMMABLE MODES	8		NOT SPECIFIED	NOT SPECIFIED		3	NMOS			5 V				R-PDIP-T24
P82C54	Rochester Electronics	TIMER, PROGRAMMABLE	COMMERCIAL	THROUGH-HOLE	24	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	PARALLEL, DIRECT ADDRESS	5.5 V		16		IN-LINE			4.5 V	70 Cel	0 Cel		DUAL				6 PROGRAMMABLE MODES	8	8 MHz	NOT SPECIFIED	NOT SPECIFIED		3	CMOS	20 mA		5 V		10MHZ 8086/88; 10MHZ 80186/188		R-PDIP-T24
RTC-72421B	Seiko Epson	TIMER, REAL TIME CLOCK	COMMERCIAL	THROUGH-HOLE	18	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	PARALLEL, DIRECT ADDRESS/MUXED BUS	5.5 V			5	IN-LINE	DIP18,.3	N	4.5 V	70 Cel	-10 Cel		DUAL	4.2 mm		7.62 mm		4	.032 MHz	NOT SPECIFIED	NOT SPECIFIED	22.606 mm	0	CMOS	.01 mA	SECONDS	5 V	Timer or RTC	8048; 8051; 8085	2.54 mm	R-PDIP-T18	Not Qualified	YES
RTC72421B	Fox Electronics	TIMER, REAL TIME CLOCK	COMMERCIAL	THROUGH-HOLE	18	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	PARALLEL	5.5 V			5	IN-LINE	DIP18,.3	N	4.5 V	70 Cel	-10 Cel	TIN LEAD	DUAL			7.62 mm						23.1 mm		CMOS		SECONDS	5 V	Timer or RTC		2.54 mm	R-PDIP-T18	Not Qualified	YES	e0
DP8570AN	Texas Instruments	TIMER, REAL TIME CLOCK	INDUSTRIAL	THROUGH-HOLE	28	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	PARALLEL				3,5	IN-LINE	DIP28,.6	Y		85 Cel	-40 Cel		DUAL							NOT SPECIFIED	NOT SPECIFIED		2	CMOS		1/100 SECOND		Timers or RTCs		2.54 mm	R-PDIP-T28	Not Qualified	YES
BQ4285LP	Texas Instruments	TIMER, REAL TIME CLOCK	COMMERCIAL	THROUGH-HOLE	24	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	PARALLEL, MUXED BUS	3.6 V			3.15	IN-LINE	DIP24,.6	Y	2.7 V	70 Cel	0 Cel		DUAL	5.08 mm		15.24 mm		8	.032 MHz	NOT SPECIFIED	NOT SPECIFIED	31.75 mm	1	CMOS		SECONDS	3.15 V	Timer or RTC		2.54 mm	R-PDIP-T24	Not Qualified	YES
BQ4285EPN	Texas Instruments	TIMER, REAL TIME CLOCK	INDUSTRIAL	THROUGH-HOLE	24	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	PARALLEL, MUXED BUS	5.5 V			5	IN-LINE	DIP24,.6	Y	4.5 V	85 Cel	-40 Cel		DUAL					8	.032 MHz				1	CMOS		SECONDS	5 V	Timer or RTC		2.54 mm	R-PDIP-T24	Not Qualified	YES
DP8573AN	Texas Instruments	TIMER, REAL TIME CLOCK	INDUSTRIAL	THROUGH-HOLE	24	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	PARALLEL				3/5	IN-LINE	DIP24,.3	Y		85 Cel	-40 Cel		DUAL							NOT SPECIFIED	NOT SPECIFIED			CMOS		1/100 SECOND		Timer or RTC		2.54 mm	R-PDIP-T24	Not Qualified	YES
BQ4287EMT	Texas Instruments		COMMERCIAL	THROUGH-HOLE	24	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	PARALLEL				5	IN-LINE	DIP24,.6	Y		70 Cel	0 Cel		DUAL											CMOS		SECONDS	5 V	Timer or RTC		2.54 mm	R-PDIP-T24	Not Qualified	NO
BQ4285LPN	Texas Instruments	TIMER, REAL TIME CLOCK	INDUSTRIAL	THROUGH-HOLE	24	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	PARALLEL, MUXED BUS	3.6 V			3.15	IN-LINE	DIP24,.6	Y	2.7 V	85 Cel	-40 Cel		DUAL					8	.032 MHz				1	CMOS		SECONDS	3.15 V	Timer or RTC		2.54 mm	R-PDIP-T24	Not Qualified	YES
BQ4285P-SB2	Texas Instruments	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	MATTE TIN	DUAL	5.08 mm		15.24 mm		8	.032 MHz			31.75 mm	1	CMOS		SECONDS	5 V	Timer or RTC		2.54 mm	R-PDIP-T24	Not Qualified	NO	e3
BQ4285EP	Texas Instruments	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	MATTE TIN	DUAL	5.08 mm		15.24 mm		8	.032 MHz			31.75 mm	1	CMOS		SECONDS	5 V	Timer or RTC		2.54 mm	R-PDIP-T24	Not Qualified	YES	e3
BQ4287EMT-N	Texas Instruments		INDUSTRIAL	THROUGH-HOLE	24	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	PARALLEL				5	IN-LINE	DIP24,.6	Y		85 Cel	-40 Cel		DUAL											CMOS		SECONDS	5 V	Timer or RTC		2.54 mm	R-PDIP-T24	Not Qualified	NO
BQ4287MT	Texas Instruments	TIMER, REAL TIME CLOCK	COMMERCIAL	THROUGH-HOLE	24	DIP	RECTANGULAR	UNSPECIFIED	NO	PARALLEL, MUXED BUS	5.5 V			5	MICROELECTRONIC ASSEMBLY	DIP24,.6	Y	4.5 V	70 Cel	0 Cel		DUAL					8					1	CMOS		SECONDS	5 V	Timer or RTC		2.54 mm	R-XDMA-T24	Not Qualified	NO
BQ4285P	Texas Instruments	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		DUAL	5.842 mm		15.24 mm		8	.032 MHz			32 mm	1	CMOS		SECONDS	5 V	Timer or RTC		2.54 mm	R-PDIP-T24	Not Qualified	NO
MM58167BN-T	Texas Instruments	TIMER, REAL TIME CLOCK	COMMERCIAL	THROUGH-HOLE	24	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	PARALLEL, DIRECT ADDRESS	5.5 V				IN-LINE			4.5 V	70 Cel	0 Cel		DUAL	5.334 mm		15.24 mm		8	.032 MHz			31.915 mm		CMOS			5 V			2.54 mm	R-PDIP-T24
MM58274CN	Texas Instruments	TIMER, REAL TIME CLOCK	INDUSTRIAL	THROUGH-HOLE	16	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	PARALLEL, DIRECT ADDRESS	5.5 V				IN-LINE			4.5 V	85 Cel	-40 Cel		DUAL	5.08 mm		7.62 mm		4				21.755 mm	0	CMOS			5 V			2.54 mm	R-PDIP-T16
MM58167AJ	Texas Instruments	TIMER, REAL TIME CLOCK	COMMERCIAL	THROUGH-HOLE	24	DIP	RECTANGULAR	CERAMIC, GLASS-SEALED	NO	PARALLEL	5.5 V				IN-LINE	DIP24,.3	Y	4.5 V	70 Cel	0 Cel	TIN LEAD	DUAL	5.715 mm	56	7.62 mm	LENGTH_MAX	8	.000032768 MHz			32.77 mm	0	CMOS	5 mA		5 V			2.54 mm	R-GDIP-T24		YES	e0
MM58167BN/NOPB	Texas Instruments	TIMER, REAL TIME CLOCK	COMMERCIAL	THROUGH-HOLE	24	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	PARALLEL, DIRECT ADDRESS	5.5 V				IN-LINE			4.5 V	70 Cel	0 Cel		DUAL	5.334 mm		15.24 mm		8	.032 MHz			31.915 mm		CMOS			5 V			2.54 mm	R-PDIP-T24
BQ4802MT	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
BQ3287EAMT	Texas Instruments	TIMER, REAL TIME CLOCK	COMMERCIAL	THROUGH-HOLE	24	DIP	RECTANGULAR	UNSPECIFIED	NO	PARALLEL, MUXED BUS	5.5 V			5	MICROELECTRONIC ASSEMBLY	DIP24,.6	Y	4.5 V	70 Cel	0 Cel		DUAL					8	.032 MHz	NOT SPECIFIED	NOT SPECIFIED		1	CMOS		SECONDS	5 V	Timer or RTC		2.54 mm	R-XDMA-T24	Not Qualified	NO
BQ3287MT	Texas Instruments	TIMER, REAL TIME CLOCK	COMMERCIAL	THROUGH-HOLE	24	DIP	RECTANGULAR	UNSPECIFIED	NO	PARALLEL, MUXED BUS	5.5 V			5	MICROELECTRONIC ASSEMBLY	DIP24,.6	Y	4.5 V	70 Cel	0 Cel		DUAL					8		NOT SPECIFIED	NOT SPECIFIED		1	CMOS		SECONDS	5 V	Timer or RTC		2.54 mm	R-XDMA-T24	Not Qualified	NO
BQ4845YPN	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	4.5 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
BQ4832YMA-85	Texas Instruments	TIMER, REAL TIME CLOCK	COMMERCIAL	THROUGH-HOLE	32	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	PARALLEL, DIRECT ADDRESS	5.5 V			5	MICROELECTRONIC ASSEMBLY	DIP32,.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-T32	Not Qualified	NO
BQ4845YP	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					8	.032 MHz				0	CMOS		SECONDS	5 V	Timer or RTC		2.54 mm	R-PDIP-T28	Not Qualified	YES
BQ3285P-SB2	Texas Instruments	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	MATTE TIN	DUAL	5.08 mm		15.24 mm		8	.032 MHz			31.75 mm	1	CMOS		SECONDS	5 V	Timer or RTC		2.54 mm	R-PDIP-T24	Not Qualified	NO	e3
BQ4845YP-A4E3	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
BQ3285LP	Texas Instruments	TIMER, REAL TIME CLOCK	COMMERCIAL	THROUGH-HOLE	24	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	PARALLEL, MUXED BUS	3.6 V			3.15	IN-LINE	DIP24,.6	Y	2.7 V	70 Cel	0 Cel		DUAL					8		NOT SPECIFIED	NOT SPECIFIED		1	CMOS		SECONDS	3.15 V	Timer or RTC		2.54 mm	R-PDIP-T24	Not Qualified	YES
BQ4842YMA-85	Texas Instruments	TIMER, REAL TIME CLOCK	COMMERCIAL	THROUGH-HOLE	32	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	PARALLEL, DIRECT ADDRESS	5.5 V			5	MICROELECTRONIC ASSEMBLY	DIP32,.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-T32	Not Qualified	NO
BQ3287MT-K	Texas Instruments	TIMER, REAL TIME CLOCK	COMMERCIAL	THROUGH-HOLE	24		RECTANGULAR	UNSPECIFIED	NO	PARALLEL, MUXED BUS	5.5 V				MICROELECTRONIC ASSEMBLY			4.5 V	70 Cel	0 Cel		DUAL					8					1	CMOS			5 V				R-XDMA-T24	Not Qualified
BQ3287MT-SB2	Texas Instruments	TIMER, REAL TIME CLOCK	COMMERCIAL	THROUGH-HOLE	24	DIP	RECTANGULAR	UNSPECIFIED	NO	PARALLEL, MUXED BUS	5.5 V			5	MICROELECTRONIC ASSEMBLY	DIP24,.6	Y	4.5 V	70 Cel	0 Cel		DUAL					8		NOT SPECIFIED	NOT SPECIFIED		1	CMOS		SECONDS	5 V	Timer or RTC		2.54 mm	R-XDMA-T24	Not Qualified	NO
BQ4845P	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		DUAL					8	.032 MHz				0	CMOS		SECONDS	5 V	Timer or RTC		2.54 mm	R-PDIP-T28	Not Qualified	YES
BQ3285EP	Texas Instruments	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	MATTE TIN	DUAL	5.08 mm		15.24 mm		8	.032 MHz			31.75 mm	1	CMOS		SECONDS	5 V	Timer or RTC		2.54 mm	R-PDIP-T24	Not Qualified	YES	e3
BQ3287LDMT	Texas Instruments	TIMER, REAL TIME CLOCK	COMMERCIAL	THROUGH-HOLE	24		RECTANGULAR	UNSPECIFIED	NO	PARALLEL, MUXED BUS	5.5 V				MICROELECTRONIC ASSEMBLY			2.7 V	70 Cel	0 Cel		DUAL					8					0	CMOS			3 V				R-XDMA-T24	Not Qualified
BQ3285P	Texas Instruments	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		DUAL	5.842 mm		15.24 mm		8	.032 MHz			32 mm	1	CMOS		SECONDS	5 V	Timer or RTC		2.54 mm	R-PDIP-T24	Not Qualified	YES
BQ3287A	Texas Instruments	TIMER, REAL TIME CLOCK	COMMERCIAL	THROUGH-HOLE	24	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	PARALLEL, MUXED BUS	5.5 V				IN-LINE			4.5 V	70 Cel	0 Cel		DUAL					8					1	CMOS			5 V				R-PDIP-T24	Not Qualified

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.