COMMERCIAL Timers & Real-Time Clocks 1,183

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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	Maximum Output Clock Frequency	Power Supplies (V)	Package Style (Meter)	Package Equivalence Code	Interrupt Capability	Minimum Supply Voltage	Maximum 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
DS1685S-5+T&R	Analog Devices	TIMER, REAL TIME CLOCK	COMMERCIAL	GULL WING	24	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	PARALLEL, MUXED BUS	5.5 V				5	SMALL OUTLINE	SOP20,.4	Y	4.5 V	70 Cel	Matte Tin (Sn) - annealed	DUAL	2.65 mm		7.5 mm		8	.032 MHz	30	260	15.4 mm	1	CMOS		SECONDS	5 V	Timer or RTC		1.27 mm	R-PDSO-G24	1	Not Qualified	YES	e3
DS1746W-120+	Analog Devices	TIMER, REAL TIME CLOCK	COMMERCIAL	THROUGH-HOLE	32	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	PARALLEL, DIRECT ADDRESS	3.63 V				3.3	IN-LINE	DIP32,.6	N	2.97 V	70 Cel	Matte Tin (Sn) - annealed	DUAL	10.922 mm		15.24 mm		8	.032 MHz			43.053 mm		CMOS		SECONDS	3.3 V	Timers or RTCs		2.54 mm	R-PDIP-T32	1	Not Qualified	NO	e3
DS1747	Analog Devices	TIMER, REAL TIME CLOCK	COMMERCIAL	THROUGH-HOLE	32	DIP	RECTANGULAR	UNSPECIFIED	NO	PARALLEL, DIRECT ADDRESS	5.5 V				5	MICROELECTRONIC ASSEMBLY	DIP32,.6	N	4.5 V	70 Cel	TIN LEAD	DUAL					8	.032 MHz				0	CMOS		SECONDS	5 V	Timer or RTC		2.54 mm	R-XDMA-T32		Not Qualified	NO	e0
DS1215S	Analog Devices		COMMERCIAL	GULL WING	16	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	SERIAL, FIXED PROTOCOL					5	SMALL OUTLINE	SOP16,.4	N		70 Cel	TIN LEAD	DUAL											CMOS		1/100 SECOND	5 V	Timer or RTC		1.27 mm	R-PDSO-G16		Not Qualified	YES	e0
DS1747P	Analog Devices	TIMER, REAL TIME CLOCK	COMMERCIAL	J INVERTED	34	DIP	RECTANGULAR	UNSPECIFIED	YES	PARALLEL, DIRECT ADDRESS	5.5 V				5	MICROELECTRONIC ASSEMBLY	DIP32,.6	N	4.5 V	70 Cel	TIN LEAD	DUAL				A POWERCAP MODULE CONTAINING CRYSTAL AND BATTERY REQUIRED	8	.032 MHz				0	CMOS		SECONDS	5 V	Timer or RTC		2.54 mm	R-XDMA-U34		Not Qualified	NO	e0
DS1685E-3+	Analog Devices	TIMER, REAL TIME CLOCK	COMMERCIAL	GULL WING	24	TSSOP	RECTANGULAR	PLASTIC/EPOXY	YES	PARALLEL, MUXED BUS	3.7 V				3	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	TSSOP24,.25	Y	2.7 V	70 Cel	Matte Tin (Sn) - annealed	DUAL	1.1 mm		4.4 mm		8	.032 MHz	30	260	7.8 mm	1	CMOS		SECONDS	3 V	Timer or RTC		.65 mm	R-PDSO-G24	1	Not Qualified	YES	e3
DS1643L-15	Analog Devices		COMMERCIAL		26			PLASTIC/EPOXY		PARALLEL					5	MICROELECTRONIC ASSEMBLY	MODULE,26LEAD,.80	N		70 Cel													CMOS		SECONDS	5 V	Timer or RTC					Not Qualified	NO
DS1557P	Analog Devices	TIMER, REAL TIME CLOCK	COMMERCIAL	J INVERTED	34		RECTANGULAR	UNSPECIFIED	YES	PARALLEL, DIRECT ADDRESS	5.5 V					MICROELECTRONIC ASSEMBLY			4.5 V	70 Cel	TIN LEAD	DUAL				A POWERCAP MODULE CONTAINING CRYSTAL AND BATTERY REQUIRED	8	.032 MHz					CMOS			5 V				R-XDMA-U34		Not Qualified		e0
DS17485S-5+T&R	Analog Devices	TIMER, REAL TIME CLOCK	COMMERCIAL	GULL WING	24	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	PARALLEL, MUXED BUS	5.5 V				5	SMALL OUTLINE	SOP24,.4	Y	4.5 V	70 Cel	Matte Tin (Sn) - annealed	DUAL	2.68 mm		7.5 mm		8	.032 MHz	30	260	17.9 mm	1	CMOS		SECONDS	5 V	Timer or RTC		1.27 mm	R-PDSO-G24	1	Not Qualified	NO	e3
DS17285E-5+	Analog Devices	TIMER, REAL TIME CLOCK	COMMERCIAL	GULL WING	28	TSSOP	RECTANGULAR	PLASTIC/EPOXY	YES	PARALLEL, MUXED BUS	5.5 V				5	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	TSSOP28,.53,22	Y	4.5 V	70 Cel	Matte Tin (Sn) - annealed	DUAL	1.2 mm		8 mm		8	.032 MHz	30	260	11.8 mm	1	CMOS		SECONDS	5 V	Timer or RTC		.55 mm	R-PDSO-G28	3	Not Qualified	YES	e3
DS1647L-15	Analog Devices	TIMER, REAL TIME CLOCK	COMMERCIAL	J INVERTED	34	SOJ-I	RECTANGULAR	UNSPECIFIED	YES	PARALLEL, DIRECT ADDRESS	5.5 V					SMALL OUTLINE			4.5 V	70 Cel	TIN LEAD	DUAL	6.35 mm		21.5265 mm		8				24.4475 mm	0	CMOS			5 V			1.27 mm	R-XDSO-U34		Not Qualified		e0
DS1248P-100	Analog Devices	TIMER, REAL TIME CLOCK	COMMERCIAL	J INVERTED	34		RECTANGULAR	UNSPECIFIED	YES	PARALLEL, DIRECT ADDRESS	5.5 V					MICROELECTRONIC ASSEMBLY			4.5 V	70 Cel	TIN LEAD	DUAL					8	10 MHz					CMOS			5 V				R-XDMA-U34		Not Qualified		e0
DS1557WP-120+	Analog Devices	TIMER, REAL TIME CLOCK	COMMERCIAL	J INVERTED	34		RECTANGULAR	UNSPECIFIED	YES	PARALLEL, DIRECT ADDRESS	3.63 V				3.3	MICROELECTRONIC ASSEMBLY	MODULE,34LEAD,1.0	Y	2.97 V	70 Cel	Matte Tin (Sn) - annealed	DUAL					8	.032 MHz					CMOS		SECONDS	3.3 V	Timer or RTC			R-XDMA-U34		Not Qualified	NO	e3
DS1742-200	Analog Devices	TIMER, REAL TIME CLOCK	COMMERCIAL	THROUGH-HOLE	24	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	PARALLEL, DIRECT ADDRESS	3.63 V					IN-LINE			2.97 V	70 Cel	TIN LEAD	DUAL	5.72 mm		7.62 mm		8					0	CMOS			3.3 V			2.54 mm	R-PDIP-T24		Not Qualified		e0
DS1673S-3+	Analog Devices	TIMER, REAL TIME CLOCK	COMMERCIAL	GULL WING	20	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	SERIAL, 3-WIRE	3.3 V				3	SMALL OUTLINE	SOP20,.4	Y	2.7 V	70 Cel	Matte Tin (Sn) - annealed	DUAL	2.65 mm		7.5 mm	3-CHANNEL, 8-BIT ADC	1	.032 MHz	30	260	12.8 mm	0	MOS		SECONDS	3 V	Timer or RTC		1.27 mm	R-PDSO-G20	1	Not Qualified	YES	e3
DS1643AL-15	Analog Devices		COMMERCIAL		34			PLASTIC/EPOXY		PARALLEL					5	MICROELECTRONIC ASSEMBLY	MODULE,34LEAD,1.0	N		70 Cel													CMOS		SECONDS	5 V	Timer or RTC					Not Qualified	NO
DS1315S-3V	Analog Devices	TIMER, REAL TIME CLOCK	COMMERCIAL	GULL WING	16	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	SERIAL, FIXED PROTOCOL	3.3 V				3	SMALL OUTLINE	SOP16,.4	N	2.7 V	70 Cel	TIN LEAD	DUAL										0	CMOS		1/100 SECOND	3 V	Timer or RTC		1.27 mm	R-PDSO-G16	1	Not Qualified	YES	e0
DS1647L-12	Analog Devices	TIMER, REAL TIME CLOCK	COMMERCIAL	J INVERTED	34	SOJ-I	RECTANGULAR	UNSPECIFIED	YES	PARALLEL, DIRECT ADDRESS	5.5 V					SMALL OUTLINE			4.5 V	70 Cel	TIN LEAD	DUAL	6.35 mm		21.5265 mm		8				24.4475 mm	0	CMOS			5 V			1.27 mm	R-XDSO-U34		Not Qualified		e0
DS1747-120	Analog Devices	TIMER, REAL TIME CLOCK	COMMERCIAL	THROUGH-HOLE	32		RECTANGULAR	UNSPECIFIED	NO	PARALLEL, DIRECT ADDRESS	3.63 V					MICROELECTRONIC ASSEMBLY			2.97 V	70 Cel	TIN LEAD	DUAL					8					0	CMOS			3.3 V				R-XDMA-T32		Not Qualified		e0
DS17487-3+	Analog Devices	TIMER, REAL TIME CLOCK	COMMERCIAL	THROUGH-HOLE	24	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	PARALLEL, MUXED BUS	3.7 V				3	IN-LINE	DIP24,.6	Y	2.7 V	70 Cel	Matte Tin (Sn) - annealed	DUAL	9.398 mm		15.24 mm		8	.032 MHz			33.782 mm	1	CMOS		SECONDS	3 V	Timer or RTC		2.54 mm	R-PDIP-T24		Not Qualified	NO	e3
DS1386-8-12	Analog Devices		COMMERCIAL	THROUGH-HOLE	32	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	PARALLEL					5	IN-LINE	DIP32,.6	Y		70 Cel	TIN LEAD	DUAL											CMOS		1/100 SECOND	5 V	Timer or RTC		2.54 mm	R-PDIP-T32		Not Qualified	NO	e0
DS1685Q-5+T&R	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	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
DS1554WP-120+	Analog Devices	TIMER, REAL TIME CLOCK	COMMERCIAL	J INVERTED	34		RECTANGULAR	UNSPECIFIED	YES	PARALLEL, DIRECT ADDRESS	3.63 V				3.3	MICROELECTRONIC ASSEMBLY	MODULE,34LEAD,1.0	Y	2.97 V	70 Cel	Matte Tin (Sn) - annealed	DUAL	2.3368 mm		23.495 mm		8	.032 MHz			25.019 mm		CMOS		SECONDS	3.3 V	Timer or RTC		1.27 mm	R-XDMA-U34		Not Qualified	NO	e3
DS1556	Analog Devices	TIMER, REAL TIME CLOCK	COMMERCIAL	PIN/PEG	32	DIP	RECTANGULAR	UNSPECIFIED	NO	PARALLEL, DIRECT ADDRESS	5.5 V				5	MICROELECTRONIC ASSEMBLY	DIP32,.6	Y	4.5 V	70 Cel	TIN LEAD	DUAL					8	.032 MHz					CMOS		SECONDS	5 V	Timer or RTC		2.54 mm	R-XDMA-P32		Not Qualified	NO	e0
DS1501WZ+	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	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
DS1685E-5+T&R	Analog Devices	TIMER, REAL TIME CLOCK	COMMERCIAL	GULL WING	24	TSSOP	RECTANGULAR	PLASTIC/EPOXY	YES	PARALLEL, MUXED BUS	5.5 V				5	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	TSSOP24,.25	Y	4.5 V	70 Cel	Matte Tin (Sn) - annealed	DUAL	1.1 mm		4.4 mm		8	.032 MHz	30	260	7.8 mm	1	CMOS		SECONDS	5 V	Timer or RTC		.65 mm	R-PDSO-G24	1	Not Qualified	YES	e3
DS1670S+	Analog Devices	TIMER, REAL TIME CLOCK	COMMERCIAL	GULL WING	20	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	SERIAL, 3-WIRE	3.63 V				3.3	SMALL OUTLINE	SOP20,.4	Y	2.97 V	70 Cel	Matte Tin (Sn) - annealed	DUAL	2.65 mm		7.5 mm	3-CHANNEL, 8-BIT ADC	1	.032 MHz	30	260	12.8 mm	0	CMOS		SECONDS	3.3 V	Timers or RTCs		1.27 mm	R-PDSO-G20	1	Not Qualified	YES	e3
DS1254W	Analog Devices	TIMER, REAL TIME CLOCK	COMMERCIAL	BALL	168	BGA	SQUARE	PLASTIC/EPOXY	YES	SERIAL, FIXED PROTOCOL	3.7 V					GRID ARRAY			3 V	70 Cel	TIN LEAD	BOTTOM			40 mm		0				40 mm	0	CMOS			3.3 V			1.27 mm	S-PBGA-B168		Not Qualified		e0
DS1243Y-170	Analog Devices		COMMERCIAL	THROUGH-HOLE	28	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	PARALLEL						IN-LINE	DIP28,.6	N		70 Cel	TIN LEAD	DUAL											CMOS		1/100 SECOND		Timer or RTC		2.54 mm	R-PDIP-T28		Not Qualified	NO	e0
DS1306+	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	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
DS1554P	Analog Devices	TIMER, REAL TIME CLOCK	COMMERCIAL	J INVERTED	34		RECTANGULAR	UNSPECIFIED	YES	PARALLEL, DIRECT ADDRESS	5.5 V				5	MICROELECTRONIC ASSEMBLY	MODULE,34LEAD,1.0	Y	4.5 V	70 Cel	TIN LEAD	DUAL				A POWERCAP MODULE CONTAINING CRYSTAL AND BATTERY REQUIRED	8	.032 MHz					CMOS		SECONDS	5 V	Timer or RTC			R-XDMA-U34		Not Qualified	NO	e0
DS16460+120	Analog Devices	TIMER, REAL TIME CLOCK	COMMERCIAL	PIN/PEG	32		RECTANGULAR	UNSPECIFIED	NO	PARALLEL, DIRECT ADDRESS	5.5 V					MICROELECTRONIC ASSEMBLY			4.5 V	70 Cel	Matte Tin (Sn) - annealed	DUAL					8	.032 MHz				0	CMOS			5 V				R-XDMA-P32		Not Qualified		e3
DS17285S-5+T&R	Analog Devices	TIMER, REAL TIME CLOCK	COMMERCIAL	GULL WING	24	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	PARALLEL, MUXED BUS	5.5 V				5	SMALL OUTLINE	SOP24,.4	Y	4.5 V	70 Cel	Matte Tin (Sn) - annealed	DUAL	2.68 mm		7.5 mm		8	.032 MHz	30	260	17.9 mm	1	CMOS		SECONDS	5 V	Timer or RTC		1.27 mm	R-PDSO-G24	1	Not Qualified	YES	e3
DS1386P32-150	Analog Devices		COMMERCIAL		34			PLASTIC/EPOXY		PARALLEL					5	MICROELECTRONIC ASSEMBLY	MODULE,34LEAD,1.0	Y		70 Cel															1/100 SECOND	5 V	Timer or RTC					Not Qualified	NO
DS1244PP-70	Analog Devices	TIMER, REAL TIME CLOCK	COMMERCIAL	J INVERTED	34		RECTANGULAR	UNSPECIFIED	YES	PARALLEL, DIRECT ADDRESS	5.5 V					MICROELECTRONIC ASSEMBLY			4.5 V	70 Cel	TIN LEAD	DUAL					8					0	CMOS			5 V				R-XDMA-U34		Not Qualified		e0
DS1315S-33+T&R	Analog Devices	TIMER, REAL TIME CLOCK	COMMERCIAL	GULL WING	16	SOP	RECTANGULAR	PLASTIC/EPOXY	YES		3.6 V					SMALL OUTLINE			3 V	70 Cel	Matte Tin (Sn) - annealed	DUAL	2.65 mm		7.5 mm				30	260	10.3 mm		CMOS			3.3 V			1.27 mm	R-PDSO-G16	1			e3
DS1685S-3+T&R	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	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
MCCS146818BP	Onsemi	TIMER, REAL TIME CLOCK	COMMERCIAL	THROUGH-HOLE	24	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	PARALLEL, DIRECT ADDRESS/MUXED BUS	5.25 V					IN-LINE			4.75 V	70 Cel		DUAL	5.08 mm		15.24 mm		8	.032 MHz			31.75 mm	1	CMOS			5 V			2.54 mm	R-PDIP-T24
Z8430AB1	STMicroelectronics	TIMER, PROGRAMMABLE	COMMERCIAL	THROUGH-HOLE	28	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	PARALLEL, DIRECT ADDRESS	5.25 V		8			IN-LINE			4.75 V	70 Cel	TIN LEAD	DUAL	5.08 mm		15.24 mm	DAISY CHAIN INTERRUPT STRUCTURE; PRESCALED /16, /256 TIMER I/P'S	8	4 MHz			37.085 mm	4	NMOS	100 mA		5 V		Z80	2.54 mm	R-PDIP-T28		Not Qualified		e0
Z8430C1	STMicroelectronics	TIMER, PROGRAMMABLE	COMMERCIAL	J BEND	44	QCCJ	SQUARE	PLASTIC/EPOXY	YES	PARALLEL, DIRECT ADDRESS	5.25 V		8			CHIP CARRIER			4.75 V	70 Cel	TIN LEAD	QUAD	4.57 mm		16.5862 mm	DAISY CHAIN INTERRUPT STRUCTURE; PRESCALED /16, /256 TIMER I/P'S	8	2.5 MHz			16.5862 mm	4	NMOS	100 mA		5 V		Z80	1.27 mm	S-PQCC-J44		Not Qualified		e0
MK48T02B25	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	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
MK48T08B10	STMicroelectronics	TIMER, REAL TIME CLOCK	COMMERCIAL	THROUGH-HOLE	28	DIP	RECTANGULAR	UNSPECIFIED	NO	PARALLEL, DIRECT ADDRESS	5.5 V	8				MICROELECTRONIC ASSEMBLY	DIP28,.6	N	4.75 V	70 Cel	TIN LEAD	DUAL		8184		10 YEARS DATA RETENTION; ACCURACY 1 MIN/MONTH @ 25 DEGREE C; SOFTWARE CLOCK CALIBRATION	8					0	CMOS	80 mA	SECONDS	5 V	Timer or RTC		2.54 mm	R-XDMA-T28		Not Qualified	NO	e0
Z8430BD1	STMicroelectronics	TIMER, PROGRAMMABLE	COMMERCIAL	THROUGH-HOLE	28	DIP	RECTANGULAR	CERAMIC, METAL-SEALED COFIRED	NO	PARALLEL, DIRECT ADDRESS	5.25 V		8			IN-LINE			4.75 V	70 Cel	TIN LEAD	DUAL				DAISY CHAIN INTERRUPT STRUCTURE; PRESCALED /16, /256 TIMER I/P'S	8	6 MHz				4	NMOS	100 mA		5 V		Z80		R-CDIP-T28		Not Qualified		e0
MK48T12B20	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	4.5 V	70 Cel	TIN LEAD	DUAL		2040		WRITE PROTECT VOLTAGE = 4.2V; 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
Z8430B1	STMicroelectronics	TIMER, PROGRAMMABLE	COMMERCIAL	THROUGH-HOLE	28	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	PARALLEL, DIRECT ADDRESS	5.25 V		8			IN-LINE			4.75 V	70 Cel	TIN LEAD	DUAL	5.08 mm		15.24 mm	DAISY CHAIN INTERRUPT STRUCTURE; PRESCALED /16, /256 TIMER I/P'S	8	2.5 MHz			37.085 mm	4	NMOS	100 mA		5 V		Z80	2.54 mm	R-PDIP-T28		Not Qualified		e0
M48ST59W-70MH1TR	STMicroelectronics	TIMER, REAL TIME CLOCK	COMMERCIAL	GULL WING	44	SSOP	RECTANGULAR	PLASTIC/EPOXY	YES	PARALLEL, DIRECT ADDRESS	3.6 V				3/3.3	SMALL OUTLINE, SHRINK PITCH	SOP44,.5,32	Y	2.7 V	70 Cel		DUAL	3.05 mm		8.56 mm		8	.032 MHz	NOT SPECIFIED	NOT SPECIFIED	18.1 mm	0	CMOS		SECONDS	3 V	Timer or RTC		.8 mm	R-PDSO-G44		Not Qualified	NO
MK48T87B	STMicroelectronics		COMMERCIAL	THROUGH-HOLE	24	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	PARALLEL					5	IN-LINE	DIP24,.6	Y		70 Cel	Tin/Lead (Sn/Pb)	DUAL											CMOS		SECONDS	5 V	Timer or RTC		2.54 mm	R-PDIP-T24		Not Qualified	NO	e0
MK48T87B24	STMicroelectronics	TIMER, REAL TIME CLOCK	COMMERCIAL	THROUGH-HOLE	24	DIP	RECTANGULAR	UNSPECIFIED	NO	PARALLEL, MUXED BUS	5.5 V	8		.008192 MHz	5	MICROELECTRONIC ASSEMBLY	DIP24,.6	Y	4.5 V	70 Cel	TIN LEAD	DUAL		50		SELECTABLE INTEL/MOTOROLA TIMING; ACCURACY 1 MIN/MONTH @ 25 DEGREE C; 10 YEARS DATA RETENTION	8					1	CMOS	15 mA	SECONDS	5 V	Timer or RTC		2.54 mm	R-XDMA-T24		Not Qualified	NO	e0

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.