34 Timers & Real-Time Clocks 198

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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	Additional Features	External Data Bus Width	Maximum Clock Frequency	No. of Timers	Technology	Minimum Time	Nominal Supply Voltage	Sub-Category	Terminal Pitch	JESD-30 Code	Qualification	Volatile	JESD-609 Code
DS1643-85+	Maxim Integrated	TIMER, REAL TIME CLOCK	COMMERCIAL	J INVERTED	34		RECTANGULAR	UNSPECIFIED	YES	PARALLEL, DIRECT ADDRESS	5.5 V		MICROELECTRONIC ASSEMBLY			4.5 V	70 Cel	0 Cel	MATTE TIN	DUAL		8	.032 MHz		CMOS		5 V			R-XDMA-U34	Not Qualified		e3
DS1248YP-100-IND	Maxim Integrated	TIMER, REAL TIME CLOCK	INDUSTRIAL	J INVERTED	34	DIP	RECTANGULAR	UNSPECIFIED	YES	PARALLEL, DIRECT ADDRESS	5.5 V	5	MICROELECTRONIC ASSEMBLY	DIP32,.6	N	4.5 V	85 Cel	-40 Cel	Tin/Lead (Sn/Pb)	DUAL	A POWERCAP MODULE CONTAINING CRYSTAL AND BATTERY REQUIRED	8		0	CMOS	1/100 SECOND	5 V	Timer or RTC	2.54 mm	R-XDMA-U34	Not Qualified	NO	e0
DS1746P-100	Maxim Integrated		COMMERCIAL		34			PLASTIC/EPOXY		PARALLEL		5	MICROELECTRONIC ASSEMBLY	MODULE,34LEAD,1.0	N		70 Cel	0 Cel								SECONDS	5 V	Timer or RTC			Not Qualified	NO
DS1251WP-150-IND	Maxim Integrated	TIMER, REAL TIME CLOCK	INDUSTRIAL	J INVERTED	34		RECTANGULAR	UNSPECIFIED	YES	PARALLEL, DIRECT ADDRESS	3.3 V		MICROELECTRONIC ASSEMBLY			2.7 V	85 Cel	-40 Cel	TIN LEAD	DUAL	A POWERCAP MODULE CONTAINING CRYSTAL AND BATTERY REQUIRED	8		0	CMOS		3 V			R-XDMA-U34	Not Qualified		e0
DS1747P-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
DS1644L-120	Maxim Integrated	TIMER, REAL TIME CLOCK	COMMERCIAL	J INVERTED	34		RECTANGULAR	PLASTIC/EPOXY	YES	PARALLEL, DIRECT ADDRESS	5.5 V	5	SMALL OUTLINE	MODULE,34LEAD,1.0	N	4.5 V	70 Cel	0 Cel	TIN LEAD	DUAL		8		0	CMOS	SECONDS	5 V	Timer or RTC		R-PDSO-U34	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.