SQUARE Timers & Real-Time Clocks 465

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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	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	Terminal Pitch	JESD-30 Code	Moisture Sensitivity Level (MSL)	Qualification	Volatile	JESD-609 Code
PCF85363ATT/AJ	NXP Semiconductors	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	8	TSSOP	SQUARE	PLASTIC/EPOXY	YES	SERIAL(I2C)	5.5 V	8				SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	TSSOP8,.2	Y	.9 V	85 Cel	-40 Cel		DUAL	1.1 mm	64	3 mm			.032768 MHz		260	3 mm		CMOS		SECONDS	3 V		.65 mm	S-PDSO-G8	1		YES
PCF8523TK	NXP Semiconductors	TIMER, REAL TIME CLOCK	INDUSTRIAL	NO LEAD	8	HVSON	SQUARE	PLASTIC/EPOXY	YES	I2C	5.5 V					SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE			1.2 V	85 Cel	-40 Cel		DUAL	1 mm		4 mm						4 mm	1	CMOS			3 V		.8 mm	S-PDSO-N8
MCP79400-I/MS	Microchip Technology	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	8	SOP	SQUARE	PLASTIC/EPOXY	YES	I2C	5.5 V	8	TS 16949		2/5	SMALL OUTLINE	SOP8,.19	Y	1.8 V	85 Cel	-40 Cel	MATTE TIN	DUAL	1.1 mm	64	3 mm		0	.032 MHz	40	260	3 mm	1	CMOS	3 mA	SECONDS	2.5 V	Timer or RTC	.65 mm	S-PDSO-G8	1	Not Qualified	NO	e3
MCP79411-I/MS	Microchip Technology	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	8	SOP	SQUARE	PLASTIC/EPOXY	YES	I2C	5.5 V	8	TS 16949		2/5	SMALL OUTLINE	SOP8,.19	Y	1.8 V	85 Cel	-40 Cel	MATTE TIN	DUAL	1.1 mm	64	3 mm	ALSO OPERATES AT 100KHZ WITH 1.8 V NOMINAL	0	.032 MHz			3 mm	1	CMOS	3 mA	SECONDS	2.5 V	Timers or RTCs	.65 mm	S-PDSO-G8		Not Qualified	NO	e3
MCP7940M-I/MS	Microchip Technology	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	8	SOP	SQUARE	PLASTIC/EPOXY	YES	I2C	5.5 V	8	TS 16949		2/5	SMALL OUTLINE	SOP8,.19	Y	1.8 V	85 Cel	-40 Cel	MATTE TIN	DUAL	1.1 mm	64	3 mm		0	.032 MHz			3 mm	1	CMOS	.4 mA	SECONDS	2.5 V	Timer or RTC	.65 mm	S-PDSO-G8		Not Qualified	YES	e3
MCP79511T-I/MS	Microchip Technology	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	10	TSSOP	SQUARE	PLASTIC/EPOXY	YES	SERIAL(SPI)	3.6 V	8	TS 16949			SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	TSSOP10,.19,20	Y	1.8 V	85 Cel	-40 Cel	MATTE TIN	DUAL	1.1 mm	64	3 mm	ALSO OPEARTES AT 1.8V MIN SUPPLY AT 3MHZ CLOCK FREQ	0	.032 MHz	40	260	3 mm	1	CMOS	5 mA	1/100 SECOND	3 V		.5 mm	S-PDSO-G10	1		NO	e3
DS1391U-3	Maxim Integrated	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	10	TSSOP	SQUARE	PLASTIC/EPOXY	YES	SERIAL, 3-WIRE	3.3 V				3	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	TSSOP10,.19,20	Y	2.7 V	85 Cel	-40 Cel	TIN LEAD	DUAL	1.1 mm		3 mm			.032 MHz			3 mm	1	CMOS		1/100 SECOND	3 V	Timer or RTC	.5 mm	S-PDSO-G10	1	Not Qualified	YES	e0
DS1391U-3+	Analog Devices	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	10	TSSOP	SQUARE	PLASTIC/EPOXY	YES	SERIAL, 3-WIRE	3.3 V				3	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	TSSOP10,.19,20	Y	2.7 V	85 Cel	-40 Cel	Matte Tin (Sn) - annealed	DUAL	1.1 mm		3 mm			.032 MHz	30	260	3 mm	1	CMOS		1/100 SECOND	3 V	Timers or RTCs	.5 mm	S-PDSO-G10	1	Not Qualified	NO	e3
DS1371U	Maxim Integrated	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	8	TSSOP	SQUARE	PLASTIC/EPOXY	YES	SERIAL, 2-WIRE/I2C	5.5 V				1.8/5	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	TSSOP8,.19	Y	1.7 V	85 Cel	-40 Cel	Tin/Lead (Sn85Pb15)	DUAL	1.1 mm		3 mm			.032 MHz	20	240	3 mm	1	CMOS		SECONDS	3.3 V	Timer or RTC	.65 mm	S-PDSO-G8	1	Not Qualified		e0
DS1371U+	Analog Devices	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	8	TSSOP	SQUARE	PLASTIC/EPOXY	YES	SERIAL, 2-WIRE/I2C	5.5 V				1.8/5	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	TSSOP8,.19	Y	1.7 V	85 Cel	-40 Cel	Matte Tin (Sn) - annealed	DUAL	1.1 mm		3 mm			.032 MHz	30	260	3 mm	1	CMOS		SECONDS	3.3 V	Timer or RTC	.65 mm	S-PDSO-G8	1	Not Qualified		e3
CS82C54Z96	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	MATTE TIN	QUAD	4.57 mm		11.505 mm		8	8 MHz	30	245	11.505 mm	3	CMOS			5 V		1.27 mm	S-PQCC-J28	3	Not Qualified		e3
CS82C54Z	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	MATTE TIN	QUAD	4.57 mm		11.505 mm		8	8 MHz	30	245	11.505 mm	3	CMOS			5 V		1.27 mm	S-PQCC-J28	3	Not Qualified		e3
PCF8563TS/5	NXP Semiconductors	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	8	TSSOP	SQUARE	PLASTIC/EPOXY	YES	I2C	5.5 V					SMALL OUTLINE, THIN PROFILE, SHRINK PITCH			1.8 V	85 Cel	-40 Cel	NICKEL PALLADIUM GOLD	DUAL	1.1 mm		3 mm		0	.032 MHz	30	260	3 mm	1	CMOS			2 V		.65 mm	R-PDSO-G8	1	Not Qualified		e4
DP8573AV/NOPB	Texas Instruments	TIMER, REAL TIME CLOCK	INDUSTRIAL	J BEND	28	QCCJ	SQUARE	PLASTIC/EPOXY	YES	PARALLEL, DIRECT ADDRESS	5.5 V				3/5	CHIP CARRIER	LDCC28,.5SQ	Y	4.5 V	85 Cel	-40 Cel	MATTE TIN	QUAD	4.57 mm		11.51 mm	PRESCALED XTAL OSCILLATOR OUTPUT FOR RTC; POWER FAIL I/P FOR BUS LOCK-OUT	8		30	245	11.51 mm	0	CMOS		1/100 SECOND	5 V	Timer or RTC	1.27 mm	S-PQCC-J28	2A	Not Qualified	YES	e3
PCF85263ATT1/AZ	NXP Semiconductors	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	10	TSSOP	SQUARE	PLASTIC/EPOXY	YES	SERIAL(I2C)	5.5 V	8				SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	TSSOP10,.19,20	Y	.9 V	85 Cel	-40 Cel		DUAL	1.1 mm	1	3 mm		0	.032768 MHz		260	3 mm	1	CMOS	.000885 mA	SECONDS	3.3 V		.5 mm	S-PDSO-G10	1		NO
PCF85363ATL/AX	NXP Semiconductors	TIMER, REAL TIME CLOCK	INDUSTRIAL	NO LEAD	10	HVSON	SQUARE	PLASTIC/EPOXY	YES	SERIAL(I2C)	5.5 V	8				SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE	SOLCC10,.11,20	Y	.9 V	85 Cel	-40 Cel	NICKEL PALLADIUM GOLD	DUAL	.5 mm	64	2.6 mm			.032768 MHz	30	260	2.6 mm		CMOS		SECONDS	3 V		.5 mm	S-PDSO-N10	1		YES	e4
PCF85363ATT1/AJ	NXP Semiconductors	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	10	TSSOP	SQUARE	PLASTIC/EPOXY	YES	I2C	5.5 V					SMALL OUTLINE, THIN PROFILE, SHRINK PITCH			.9 V	85 Cel	-40 Cel		DUAL	1.1 mm		3 mm					260	3 mm	1	CMOS			3.3 V		.5 mm	S-PDSO-G10	1
PCF8563TS/4	NXP Semiconductors	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	NICKEL PALLADIUM GOLD	DUAL	1.1 mm		3 mm		0	.032 MHz	30	260	3 mm	1	CMOS		SECONDS	2 V	Timer or RTC	.65 mm	R-PDSO-G8	1	Not Qualified	YES	e4
MCP7940N-E/MS	Microchip Technology	TIMER, REAL TIME CLOCK	AUTOMOTIVE	GULL WING	8	SOP	SQUARE	PLASTIC/EPOXY	YES	I2C	5.5 V	8	AEC-Q100		2/5	SMALL OUTLINE	SOP8,.19	Y	1.8 V	125 Cel	-40 Cel	MATTE TIN	DUAL	1.1 mm	64	3 mm		0	.032 MHz	40	260	3 mm	1	CMOS	.4 mA	SECONDS	2.5 V	Timer or RTC	.65 mm	S-PDSO-G8	1	Not Qualified	YES	e3
MAX16998AAUA+	Analog Devices	TIMER, PROGRAMMABLE	AUTOMOTIVE	GULL WING	8	TSSOP	SQUARE	PLASTIC/EPOXY	YES		40 V					SMALL OUTLINE, THIN PROFILE, SHRINK PITCH			5 V	125 Cel	-40 Cel	Matte Tin (Sn) - annealed	DUAL	1.1 mm		3 mm				30	260	3 mm	1	BICMOS			14 V		.65 mm	S-PDSO-G8	1	Not Qualified		e3
DS1338U-33+T&R/C01	Maxim Integrated	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	8	TSSOP	SQUARE	PLASTIC/EPOXY	YES	I2C	5.5 V					SMALL OUTLINE, THIN PROFILE, SHRINK PITCH			3 V	85 Cel	-40 Cel	MATTE TIN	DUAL	1.1 mm		3 mm				30	260	3 mm	1	CMOS			3.3 V		.65 mm	S-PDSO-G8	1			e3
DS1340U-33/T&R	Maxim Integrated	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	N	2.97 V	85 Cel	-40 Cel	TIN LEAD	DUAL	1.1 mm		3 mm			.032 MHz			3 mm		CMOS		SECONDS	3.3 V	Timer or RTC	.65 mm	S-PDSO-G8	1	Not Qualified	NO	e0
DS1340U-33+T&R	Analog Devices	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	8	SOP	SQUARE	PLASTIC/EPOXY	YES	I2C	5.5 V				3.3	SMALL OUTLINE	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		CMOS		SECONDS	3.3 V	Timer or RTC	.65 mm	S-PDSO-G8	1	Not Qualified	NO	e3
ISL1208IU8Z-TK	Renesas Electronics	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	8	TSSOP	SQUARE	PLASTIC/EPOXY	YES	I2C	5.5 V	8				SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	TSSOP8,.2	Y	2.7 V	85 Cel	-40 Cel	MATTE TIN	DUAL	1.1 mm	2	3 mm		0	.032768 MHz	30	260	3 mm		CMOS	.004 mA	SECONDS	3 V		.65 mm	S-PDSO-G8	2		NO	e3
MCP79400T-I/MS	Microchip Technology	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	8	SOP	SQUARE	PLASTIC/EPOXY	YES	I2C	5.5 V	8	TS 16949		2/5	SMALL OUTLINE	SOP8,.19	Y	1.8 V	85 Cel	-40 Cel	MATTE TIN	DUAL	1.1 mm	64	3 mm		0	.032 MHz			3 mm	1	CMOS	3 mA	SECONDS	2.5 V	Timer or RTC	.65 mm	S-PDSO-G8	1	Not Qualified	NO	e3
DS1340U-33	Maxim Integrated	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	N	2.97 V	85 Cel	-40 Cel	TIN LEAD	DUAL	1.1 mm		3 mm			.032 MHz			3 mm		CMOS		SECONDS	3.3 V	Timer or RTC	.65 mm	S-PDSO-G8	1	Not Qualified	NO	e0
DS1340U-33+	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	N	2.97 V	85 Cel	-40 Cel	Matte Tin (Sn) - annealed	DUAL	1.1 mm		3 mm			.032 MHz	30	260	3 mm		CMOS		SECONDS	3.3 V	Timer or RTC	.65 mm	S-PDSO-G8	1	Not Qualified	NO	e3
DS1343D-33+T&R	Analog Devices	TIMER, REAL TIME CLOCK	INDUSTRIAL	NO LEAD	14	HVSON	SQUARE	PLASTIC/EPOXY	YES	SERIAL, 3-WIRE	5.5 V					SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE			3 V	85 Cel	-40 Cel	Matte Tin (Sn) - annealed	DUAL	.8 mm		3 mm				30	260	3 mm	1	CMOS			3.3 V		.4 mm	S-PDSO-N14	1			e3
DS1394U-33+	Analog Devices	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	10	TSSOP	SQUARE	PLASTIC/EPOXY	YES	SERIAL, 2-WIRE/I2C	5.5 V				3.3	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	TSSOP10,.19,20	Y	2.97 V	85 Cel	-40 Cel	Matte Tin (Sn) - annealed	DUAL	1.1 mm		3 mm			.032 MHz	30	260	3 mm	1	CMOS		1/100 SECOND	3.3 V	Timers or RTCs	.5 mm	S-PDSO-G10	1	Not Qualified	NO	e3
DS1308U-33+T	Analog Devices	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	8	TSSOP	SQUARE	PLASTIC/EPOXY	YES	I2C	5.5 V				3.3/5	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	TSSOP8,.19	N	3 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
DS1390U-18	Maxim Integrated	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	10	TSSOP	SQUARE	PLASTIC/EPOXY	YES	SERIAL, 3-WIRE	1.89 V				1.8	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	TSSOP10,.19,20	Y	1.71 V	85 Cel	-40 Cel	TIN LEAD	DUAL	1.1 mm		3 mm			.032 MHz			3 mm	1	CMOS		1/100 SECOND	1.8 V	Timer or RTC	.5 mm	S-PDSO-G10	1	Not Qualified	YES	e0
DS1390U-18+	Analog Devices	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	10	TSSOP	SQUARE	PLASTIC/EPOXY	YES	SERIAL, 3-WIRE	1.89 V				1.8	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	TSSOP10,.19,20	Y	1.71 V	85 Cel	-40 Cel	Matte Tin (Sn) - annealed	DUAL	1.1 mm		3 mm			.032 MHz	30	260	3 mm	1	CMOS		1/100 SECOND	1.8 V	Timers or RTCs	.5 mm	S-PDSO-G10	1	Not Qualified	NO	e3
MCP79401-I/MS	Microchip Technology	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	8	SOP	SQUARE	PLASTIC/EPOXY	YES	I2C	5.5 V	8	TS 16949		2/5	SMALL OUTLINE	SOP8,.19	Y	1.8 V	85 Cel	-40 Cel	MATTE TIN	DUAL	1.1 mm	64	3 mm		0	.032 MHz			3 mm	1	CMOS	3 mA	SECONDS	2.5 V	Timer or RTC	.65 mm	S-PDSO-G8		Not Qualified	NO	e3
PCF85063BTL/1	NXP Semiconductors	TIMER, REAL TIME CLOCK	INDUSTRIAL	NO LEAD	10	HVSON	SQUARE	PLASTIC/EPOXY	YES	SERIAL, 3-WIRE	5.5 V					SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE			.9 V	85 Cel	-40 Cel		DUAL	.5 mm		2.6 mm	ALSO OPERATES AT 1.8 V AT 400KHZ		.032 MHz			2.6 mm	1	CMOS			3.3 V		.5 mm	S-PDSO-N10
MAX16998AAUA/V+	Analog Devices	TIMER, PROGRAMMABLE	AUTOMOTIVE	GULL WING	8	TSSOP	SQUARE	PLASTIC/EPOXY	YES		40 V					SMALL OUTLINE, THIN PROFILE, SHRINK PITCH			5 V	125 Cel	-40 Cel	Matte Tin (Sn) - annealed	DUAL	1.1 mm		3 mm				30	260	3 mm	1	BICMOS			14 V		.65 mm	S-PDSO-G8	1	Not Qualified		e3
M41T93ZQA6F	STMicroelectronics	TIMER, REAL TIME CLOCK	INDUSTRIAL	NO LEAD	16	HVQCCN	SQUARE	PLASTIC/EPOXY	YES	SERIAL, 4 WIRE/SPI	5.5 V			8	2.4/5.5	CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE	LCC16,.12SQ,20	Y	2.38 V	85 Cel	-40 Cel	MATTE TIN	QUAD	1 mm		4 mm			10 MHz	40	260	4 mm	1	CMOS		1/100 SECOND	3 V	Timers or RTCs	.65 mm	S-PQCC-N16	3	Not Qualified	NO	e3
PCF85363ATT1/AZ	NXP Semiconductors	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	10	TSSOP	SQUARE	PLASTIC/EPOXY	YES	SERIAL(I2C)	5.5 V	8				SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	TSSOP10,.2,20	Y	.9 V	85 Cel	-40 Cel		DUAL	1.1 mm	64	3 mm			.032768 MHz		260	3 mm		CMOS		SECONDS	3 V		.5 mm	S-PDSO-G10	1		YES
DS1342U+T&R	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
DS1558Y	Maxim Integrated	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	48	TFQFP	SQUARE	PLASTIC/EPOXY	YES	PARALLEL, DIRECT ADDRESS	5.5 V				5	FLATPACK, THIN PROFILE, FINE PITCH	TQFP48,.35SQ	Y	4.5 V	85 Cel	-40 Cel	TIN LEAD	QUAD	1.2 mm		7 mm		8	.032 MHz			7 mm	0	CMOS		SECONDS	5 V	Timer or RTC	.5 mm	S-PQFP-G48		Not Qualified		e0
DS1558Y+	Analog Devices	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	48	TFQFP	SQUARE	PLASTIC/EPOXY	YES	PARALLEL, DIRECT ADDRESS	5.5 V				5	FLATPACK, THIN PROFILE, FINE PITCH	TQFP48,.35SQ	Y	4.5 V	85 Cel	-40 Cel	Matte Tin (Sn) - annealed	QUAD	1.2 mm		7 mm		8	.032 MHz	30	260	7 mm	0	CMOS		SECONDS	5 V	Timer or RTC	.5 mm	S-PQFP-G48	1	Not Qualified	NO	e3
IS82C54-10	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	10 MHz			11.505 mm	3	CMOS			5 V		1.27 mm	S-PQCC-J28	1	Not Qualified		e0
DS1558W	Maxim Integrated	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	48	TFQFP	SQUARE	PLASTIC/EPOXY	YES	PARALLEL, DIRECT ADDRESS	3.63 V				3.3	FLATPACK, THIN PROFILE, FINE PITCH	TQFP48,.35SQ	Y	2.97 V	85 Cel	-40 Cel	TIN LEAD	QUAD	1.2 mm		7 mm		8	.032 MHz			7 mm	0	CMOS		SECONDS	3.3 V	Timer or RTC	.5 mm	S-PQFP-G48		Not Qualified		e0
DS1558W+	Analog Devices	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	48	TFQFP	SQUARE	PLASTIC/EPOXY	YES	PARALLEL, DIRECT ADDRESS	3.63 V				3.3	FLATPACK, THIN PROFILE, FINE PITCH	TQFP48,.35SQ	Y	2.97 V	85 Cel	-40 Cel	Matte Tin (Sn) - annealed	QUAD	1.2 mm		7 mm		8	.032 MHz	30	260	7 mm	0	CMOS		SECONDS	3.3 V	Timer or RTC	.5 mm	S-PQFP-G48	1	Not Qualified	NO	e3
PCF8563TS	NXP Semiconductors	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		DUAL	1.1 mm		3 mm			.032 MHz		260	3 mm	1	CMOS		SECONDS	2 V	Timer or RTC	.65 mm	S-PDSO-G8		Not Qualified	YES
MCP79521-I/MS	Microchip Technology	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	10	TSSOP	SQUARE	PLASTIC/EPOXY	YES	SERIAL(SPI)	3.6 V	8	TS 16949			SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	TSSOP10,.19,20	Y	1.8 V	85 Cel	-40 Cel	MATTE TIN	DUAL	1.1 mm	64	3 mm	ALSO OPEARTES AT 1.8V MIN SUPPLY AT 3MHZ CLOCK FREQ	0	.032 MHz	40	260	3 mm	1	CMOS	5 mA	1/100 SECOND	3 V		.5 mm	S-PDSO-G10	2		NO	e3
AB1815-T3	Abracon	TIMER, REAL TIME CLOCK	INDUSTRIAL	NO LEAD	16	HVQCCN	SQUARE	UNSPECIFIED	YES	I2C; SERIAL, 4-WIRE/3-WIRE	3.6 V				1.8/3.3	CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE	LCC16,.12SQ,20	Y	1.5 V	85 Cel	-40 Cel		QUAD	.9 mm		3 mm			.032 MHz			3 mm	1	CMOS		SECONDS	1.8 V	Timer or RTC	.5 mm	S-XQCC-N16	1	Not Qualified	NO
DS1391U-33	Maxim Integrated	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	10	TSSOP	SQUARE	PLASTIC/EPOXY	YES	SERIAL, 3-WIRE	5.5 V				3.3	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	TSSOP10,.19,20	Y	2.97 V	85 Cel	-40 Cel	TIN LEAD	DUAL	1.1 mm		3 mm			.032 MHz			3 mm	1	CMOS		1/100 SECOND	3.3 V	Timers or RTCs	.5 mm	S-PDSO-G10	1	Not Qualified	YES	e0
DS1391U-33+	Analog Devices	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	10	TSSOP	SQUARE	PLASTIC/EPOXY	YES	SERIAL, 3-WIRE	5.5 V				3.3	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	TSSOP10,.19,20	Y	2.97 V	85 Cel	-40 Cel	Matte Tin (Sn) - annealed	DUAL	1.1 mm		3 mm			.032 MHz	30	260	3 mm	1	CMOS		1/100 SECOND	3.3 V	Timers or RTCs	.5 mm	S-PDSO-G10	1	Not Qualified	NO	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.