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	Maximum Output Clock Frequency	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	Total Dose (V)	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
DS1629S+	Analog Devices	TIMER, REAL TIME CLOCK	MILITARY	GULL WING	8	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	SERIAL, 2-WIRE/I2C	5.5 V						SMALL OUTLINE			2.2 V	125 Cel	-55 Cel	Matte Tin (Sn) - annealed	DUAL	1.75 mm		3.9 mm			.032 MHz	30	260	4.9 mm			CMOS			2.7 V			1.27 mm	R-PDSO-G8	1	Not Qualified		e3
DS1642-150	Maxim Integrated		COMMERCIAL	THROUGH-HOLE	24	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	PARALLEL						5	IN-LINE	DIP24,.6	N		70 Cel	0 Cel	Tin/Lead (Sn/Pb)	DUAL												CMOS		SECONDS	5 V	Timer or RTC		2.54 mm	R-PDIP-T24		Not Qualified	NO	e0
PCA85063ATT/AJ	NXP Semiconductors	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	8	TSSOP	SQUARE	PLASTIC/EPOXY	YES	I2C	5.5 V		AEC-Q100				SMALL OUTLINE, THIN PROFILE, SHRINK PITCH			.9 V	105 Cel	-40 Cel	NICKEL PALLADIUM GOLD	DUAL	1.1 mm		3 mm				30	260	3 mm		1	CMOS			3.3 V			.65 mm	S-PDSO-G8	1			e4
PT7C4307WEX	Diodes Incorporated	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	8	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	I2C	5.5 V	8				5	SMALL OUTLINE	SOP8,.25	Y	4.5 V	85 Cel	-40 Cel		DUAL	1.75 mm	56	3.9 mm			.032768 MHz			4.9 mm		1	CMOS	1.5 mA	SECONDS	5 V	Timer or RTC		1.27 mm	R-PDSO-G8		Not Qualified	YES
AB-RTCMC-32.768KHZ-B5ZE-S3-T	Abracon	TIMER, REAL TIME CLOCK	INDUSTRIAL	NO LEAD	10	VSON	RECTANGULAR	PLASTIC/EPOXY	YES	I2C	5.5 V					1.5/5	SMALL OUTLINE, VERY THIN PROFILE	SOLCC10,.1,32	Y	1.2 V	85 Cel	-40 Cel	GOLD OVER NICKEL	DUAL	.9 mm		2.5 mm			.032 MHz	10	260	3.7 mm			CMOS		SECONDS	2 V	Timer or RTC		.8 mm	R-PDSO-N10	1	Not Qualified	NO	e4
AB-RTCMC-32.768KHZ-IBO5-S3-T	Abracon	TIMER, REAL TIME CLOCK	INDUSTRIAL	NO LEAD	10	VSON	RECTANGULAR	PLASTIC/EPOXY	YES	I2C	3.6 V						SMALL OUTLINE, VERY THIN PROFILE			1.5 V	85 Cel	-40 Cel	GOLD OVER NICKEL	DUAL	.9 mm		2.5 mm		0		10	260	3.7 mm			CMOS			3 V			.8 mm	R-PDSO-N10	1			e4
DS1339AU+	Analog Devices	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	8	TSSOP	SQUARE	PLASTIC/EPOXY	YES	I2C	5.5 V					3.3	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	TSSOP8,.19	Y	1.71 V	85 Cel	-40 Cel	Matte Tin (Sn) - annealed	DUAL	1.1 mm		3 mm				30	260	3 mm		1	CMOS		SECONDS	3.3 V	Timer or RTC		.65 mm	S-PDSO-G8	1	Not Qualified	NO	e3
DS1342U+	Analog Devices	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	8	TSSOP	SQUARE	PLASTIC/EPOXY	YES	I2C	5.5 V					2/5	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	TSSOP8,.19	Y	1.8 V	85 Cel	-40 Cel	Matte Tin (Sn) - annealed	DUAL	1.1 mm		3 mm		0	.032 MHz	30	260	3 mm		1	CMOS		SECONDS	3 V	Timer or RTC		.65 mm	S-PDSO-G8	1	Not Qualified	YES	e3
DS1693	Maxim Integrated	TIMER, REAL TIME CLOCK	COMMERCIAL	THROUGH-HOLE	28	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	PARALLEL, DIRECT ADDRESS/MUXED BUS	4 V			16		3/5	IN-LINE	DIP28,.6	Y	2.7 V	70 Cel	0 Cel	TIN LEAD	DUAL	9.398 mm		15.24 mm	CAN ALSO OPERATE WITH 5V SUPPLY	8	.032 MHz			38.862 mm		1	CMOS		SECONDS	3 V	Timer or RTC		2.54 mm	R-PDIP-T28	1	Not Qualified	NO	e0
DS1693+	Maxim Integrated	TIMER, REAL TIME CLOCK	COMMERCIAL	THROUGH-HOLE	28	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	PARALLEL, DIRECT ADDRESS/MUXED BUS	4 V			16			IN-LINE			2.7 V	70 Cel	0 Cel	MATTE TIN	DUAL	9.398 mm		15.24 mm	CAN ALSO OPERATE WITH 5V SUPPLY	8	.032 MHz			38.862 mm		1	CMOS			3 V			2.54 mm	R-PDIP-T28		Not Qualified		e3
DS1672U-33	Maxim Integrated	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	8	TSSOP	SQUARE	PLASTIC/EPOXY	YES	I2C	3.63 V					3.3	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	TSSOP8,.19	N	2.97 V	85 Cel	-40 Cel	TIN LEAD	DUAL	1.1 mm		3 mm			.032 MHz			3 mm		0	CMOS		SECONDS	3.3 V	Timer or RTC		.65 mm	S-PDSO-G8	1	Not Qualified	NO	e0
DS1672U-33+	Analog Devices	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	8	TSSOP	SQUARE	PLASTIC/EPOXY	YES	I2C	3.63 V					3.3	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	TSSOP8,.19	N	2.97 V	85 Cel	-40 Cel	Matte Tin (Sn) - annealed	DUAL	1.1 mm		3 mm			.032 MHz	30	260	3 mm		0	CMOS		SECONDS	3.3 V	Timers or RTCs		.65 mm	S-PDSO-G8	1	Not Qualified	NO	e3
DS1746-70	Maxim Integrated	TIMER, REAL TIME CLOCK	COMMERCIAL	PIN/PEG	32	DIP	RECTANGULAR	UNSPECIFIED	NO	PARALLEL, DIRECT ADDRESS	5.5 V					5	IN-LINE	DIP32,.6	N	4.5 V	70 Cel	0 Cel	TIN LEAD	DUAL	9.27 mm		15.24 mm		8	.032 MHz			38.675 mm		0	CMOS		SECONDS	5 V	Timer or RTC		2.54 mm	R-XDIP-P32	1	Not Qualified	NO	e0
DS1746-70+	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	N	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	Timers or RTCs		2.54 mm	R-PDIP-T32	1	Not Qualified	NO	e3
AB-RTCMC-32.768KHZ-EOA9-S3-DBT	Abracon	TIMER, REAL TIME CLOCK	INDUSTRIAL	NO LEAD	10	VSON	RECTANGULAR	PLASTIC/EPOXY	YES	I2C	5.5 V						SMALL OUTLINE, VERY THIN PROFILE			1.4 V	85 Cel	-40 Cel	GOLD OVER NICKEL	DUAL	.9 mm		2.5 mm			.032 MHz	10	260	3.7 mm			CMOS			3 V			.8 mm	R-PDSO-N10	1			e4
ISL1221IUZ	Renesas Electronics	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	10	TSSOP	SQUARE	PLASTIC/EPOXY	YES	I2C	5.5 V						SMALL OUTLINE, THIN PROFILE, SHRINK PITCH			2.7 V	85 Cel	-40 Cel	MATTE TIN	DUAL	1.1 mm		3 mm				30	260	3 mm			CMOS			3 V			.5 mm	S-PDSO-G10	2			e3
AB-RTCMC-32.768KHZ-EOA9-S3-HAT	Abracon	TIMER, REAL TIME CLOCK	AUTOMOTIVE	NO LEAD	10	VSON	RECTANGULAR	PLASTIC/EPOXY	YES	I2C	5.5 V						SMALL OUTLINE, VERY THIN PROFILE			1.4 V	125 Cel	-40 Cel	GOLD OVER NICKEL	DUAL	.9 mm		2.5 mm			.032 MHz	10	260	3.7 mm			CMOS			3 V			.8 mm	R-PDSO-N10	1			e4
AB-RTCMC-32.768KHZ-EOZ9-S3-DBT	Abracon	TIMER, REAL TIME CLOCK	INDUSTRIAL	NO LEAD	10	VSON	RECTANGULAR	PLASTIC/EPOXY	YES	I2C	5.5 V						SMALL OUTLINE, VERY THIN PROFILE			1.4 V	85 Cel	-40 Cel	Gold (Au) - with Nickel (Ni) barrier	DUAL	.9 mm		2.5 mm			.032 MHz	10	260	3.7 mm			CMOS			3 V			.8 mm	R-PDSO-N10	1			e4
BD9555FVM-CGTR	ROHM	TIMER, PROGRAMMABLE	AUTOMOTIVE	GULL WING	8	VSSOP	RECTANGULAR	PLASTIC/EPOXY	YES		42 V						SMALL OUTLINE, VERY THIN PROFILE, SHRINK PITCH			4.5 V	125 Cel	-40 Cel		DUAL	.9 mm		2.8 mm		0		NOT SPECIFIED	NOT SPECIFIED	2.9 mm		1	CMOS			13 V			.65 mm	R-PDSO-G8
CS82C54-1096	Renesas Electronics	TIMER, PROGRAMMABLE	COMMERCIAL	J BEND	28	QCCJ	SQUARE	PLASTIC/EPOXY	YES	PARALLEL, DIRECT ADDRESS	5.5 V			16			CHIP CARRIER			4.5 V	70 Cel	0 Cel	TIN LEAD	QUAD	4.57 mm		11.505 mm		8	10 MHz			11.505 mm		3	CMOS			5 V			1.27 mm	S-PQCC-J28	1	Not Qualified		e0
HS1-82C54RH-8	Renesas Electronics	TIMER, PROGRAMMABLE	MILITARY	THROUGH-HOLE	24	DIP	RECTANGULAR	CERAMIC, METAL-SEALED COFIRED	NO	PARALLEL, DIRECT ADDRESS	5.5 V		MIL-PRF-38535 Class Q	16			IN-LINE			4.5 V	125 Cel	-55 Cel	GOLD	DUAL	5.72 mm		15.24 mm		8					100k Rad(Si)	3	CMOS			5 V			2.54 mm	R-CDIP-T24		Not Qualified		e4
IS82C5496	Renesas Electronics	TIMER, PROGRAMMABLE	INDUSTRIAL	J BEND	28	QCCJ	SQUARE	PLASTIC/EPOXY	YES	PARALLEL, DIRECT ADDRESS	5.5 V			16			CHIP CARRIER			4.5 V	85 Cel	-40 Cel	TIN LEAD	QUAD	4.57 mm		11.505 mm		8	8 MHz			11.505 mm		3	CMOS			5 V			1.27 mm	S-PQCC-J28	1	Not Qualified		e0
ISL12028IB27Z	Renesas Electronics	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	14	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	I2C	5.5 V					3/5	SMALL OUTLINE	SOP14,.25	Y	2.7 V	85 Cel	-40 Cel	MATTE TIN	DUAL	1.75 mm		3.9 mm		0	.032 MHz	30	260	8.65 mm			CMOS		SECONDS	3.3 V	Timer or RTC		1.27 mm	R-PDSO-G14	2	Not Qualified	YES	e3
ISL12058IBZ	Renesas Electronics	TIMER, REAL TIME CLOCK																					MATTE TIN								30	260												2			e3
ISL12058IRUZ-T	Renesas Electronics	TIMER, REAL TIME CLOCK	INDUSTRIAL	NO LEAD	8	HVSON	SQUARE	PLASTIC/EPOXY	YES	I2C	3.6 V					3.3	SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE	SOLCC8,.08,20	Y	1.8 V	85 Cel	-40 Cel	MATTE TIN	DUAL	.55 mm		2 mm		0	.032 MHz			2 mm			CMOS		SECONDS	3 V	Timer or RTC		.5 mm	S-PDSO-N8	1	Not Qualified	YES	e3
MC68B40P	Motorola	TIMER, PROGRAMMABLE	COMMERCIAL	THROUGH-HOLE	28	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	PARALLEL, DIRECT ADDRESS	5.25 V			16			IN-LINE	DIP28,.6	Y	4.75 V	70 Cel	0 Cel	TIN LEAD	DUAL	5.08 mm		15.24 mm		8	2 MHz			36.83 mm		3				5 V		6800	2.54 mm	R-PDIP-T28		Not Qualified		e0
AB-RTCMC-32.768KHZ-EOZ9-S3-HAT	Abracon	TIMER, REAL TIME CLOCK	AUTOMOTIVE	NO LEAD	10	VSON	RECTANGULAR	PLASTIC/EPOXY	YES	I2C	5.5 V						SMALL OUTLINE, VERY THIN PROFILE			1.4 V	125 Cel	-40 Cel	Gold (Au) - with Nickel (Ni) barrier	DUAL	.9 mm		2.5 mm			.032 MHz	40	260	3.7 mm			CMOS			3 V			.8 mm	R-PDSO-N10	1			e4
AB-RTCMC-32.768KHZ-ZIZE-S2-T	Abracon	TIMER, REAL TIME CLOCK	INDUSTRIAL	NO LEAD	10	SON	RECTANGULAR	PLASTIC/EPOXY	YES	SERIAL, 4-WIRE/SPI	5.5 V					1.2/5	SMALL OUTLINE	SOLCC10,.12,40	Y	1.1 V	85 Cel	-40 Cel	GOLD OVER NICKEL	DUAL	1.2 mm		3.2 mm			.032 MHz	10	260	5 mm			CMOS		SECONDS	2 V	Timer or RTC		1 mm	R-PDSO-N10	1	Not Qualified	YES	e4
BU9873F-GTE2	ROHM	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	8	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	I2C	5.5 V						SMALL OUTLINE			1.8 V	85 Cel	-40 Cel		DUAL	1.71 mm		4.4 mm	SEATED-HGT CALCULATED			NOT SPECIFIED	NOT SPECIFIED	5 mm			CMOS			3 V			1.27 mm	R-PDSO-G8
CA555CE	Intersil	TIMER, MEMORY REFRESH																					TIN LEAD													CMOS											e0
CDP68HC68T1E	Renesas Electronics	TIMER, REAL TIME CLOCK	INDUSTRIAL	THROUGH-HOLE	16	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	SERIAL, 3-WIRE	6 V	8			.002048 MHz	3.3/5	IN-LINE	DIP16,.3	Y	3 V	85 Cel	-40 Cel	Tin/Lead (Sn/Pb)	DUAL		32				2.1 MHz					1	CMOS	1.2 mA	SECONDS	5 V	Timer or RTC	CDP6805D2	2.54 mm	R-PDIP-T16		Not Qualified	YES	e0
D8254	Intel	TIMER, PROGRAMMABLE	COMMERCIAL	THROUGH-HOLE	24	DIP	RECTANGULAR	CERAMIC, GLASS-SEALED	NO	PARALLEL, DIRECT ADDRESS	5.5 V			16			IN-LINE			4.5 V	70 Cel	0 Cel	TIN LEAD	DUAL				6 PROGRAMMABLE MODES	8						3	NMOS	170 mA		5 V				R-GDIP-T24		Not Qualified		e0
D8254-2	Rochester Electronics	TIMER, PROGRAMMABLE	COMMERCIAL	THROUGH-HOLE	24	DIP	RECTANGULAR	CERAMIC, GLASS-SEALED	NO	PARALLEL, DIRECT ADDRESS	5.5 V			16			IN-LINE			4.5 V	70 Cel	0 Cel		DUAL				6 PROGRAMMABLE MODES	8		NOT SPECIFIED	NOT SPECIFIED			3	NMOS			5 V				R-GDIP-T24		Not Qualified
ISL12027IV27Z-T	Renesas Electronics	TIMER, REAL TIME CLOCK		GULL WING	8	TSSOP	RECTANGULAR	PLASTIC/EPOXY	YES	SERIAL(I2C)	5.5 V						SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	TSSOP8,.25	Y	2.7 V	85 Cel	-40 Cel	MATTE TIN	DUAL	1.2 mm		3 mm			.32768 MHz			4.4 mm			CMOS	3.5 mA	SECONDS	3.3 V			.65 mm	R-PDSO-G8	1		NO	e3
MC146818P	NXP Semiconductors	TIMER, REAL TIME CLOCK	COMMERCIAL	THROUGH-HOLE	24	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	PARALLEL, MUXED BUS	5.5 V	8			.032768 MHz		IN-LINE			3 V	70 Cel	0 Cel	TIN LEAD	DUAL	5.08 mm	50	15.24 mm		8	4.2 MHz			31.75 mm		1	CMOS	3 mA		5 V		8085; 8048; 8049; MC3870; MC6805; MC146805; S2000; 8021	2.54 mm	R-PDIP-T24		Not Qualified		e0
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
DP8570AV/NOPB	Texas Instruments	TIMER, REAL TIME CLOCK	INDUSTRIAL	J BEND	28	QCCJ	SQUARE	PLASTIC/EPOXY	YES	PARALLEL, DIRECT ADDRESS	5.5 V			16		3/5	CHIP CARRIER	LDCC28,.5SQ	Y	4.5 V	85 Cel	-40 Cel	MATTE TIN	QUAD	4.57 mm		11.43 mm	4 PROGRAMMABLE MODES FOR TIMER; 4 SELECTABLE OSCILLATOR FREQUENCIES	8	10 MHz	30	245	11.43 mm		2	CMOS		1/100 SECOND	5 V	Timer or RTC		1.27 mm	S-PQCC-J28	2A	Not Qualified	YES	e3
MCP79401-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		0	.032 MHz	40	260	4.4 mm		1	CMOS	3 mA	SECONDS	2.5 V	Timer or RTC		.65 mm	R-PDSO-G8	1	Not Qualified	NO	e3
MCP79402-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		0	.032 MHz			4.4 mm		1	CMOS	3 mA	SECONDS	2.5 V	Timer or RTC		.65 mm	R-PDSO-G8		Not Qualified	NO	e3
PT7C433833UEX	Diodes Incorporated	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	8	TSSOP	SQUARE	PLASTIC/EPOXY	YES	I2C	5.5 V					3/5	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	TSSOP8,.19	Y	2.7 V	85 Cel	-40 Cel		DUAL	1.1 mm		3 mm						3 mm		1	CMOS		SECONDS	3 V	Timer or RTC		.65 mm	S-PDSO-G8		Not Qualified	NO
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
DS1251WP-120	Maxim Integrated	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	N	2.97 V	70 Cel	0 Cel	TIN LEAD	DUAL				USE DS9034PCX TO ORDER POWERCAP	8							CMOS		1/100 SECOND	3.3 V	Timer or RTC			R-XDMA-U34		Not Qualified	NO	e0
DS1251WP-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	N	2.97 V	70 Cel	0 Cel	Matte Tin (Sn) - annealed	DUAL	6.858 mm		23.495 mm	USE DS9034PCX TO ORDER POWERCAP	8				24.384 mm			CMOS		1/100 SECOND	3.3 V	Timer or RTC		1.27 mm	R-XDMA-U34		Not Qualified	NO	e3
DS1338C-33	Maxim Integrated	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	16	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	I2C	5.5 V						SMALL OUTLINE			3 V	85 Cel	-40 Cel	TIN LEAD	DUAL	2.65 mm		7.5 mm			.032 MHz			10.3 mm		1	CMOS			3.3 V			1.27 mm	R-PDSO-G16	1	Not Qualified		e0

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.