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	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
DS3234SN#	Analog Devices	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	20	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	SERIAL, 4-WIRE/SPI	5.5 V			8	3.3	SMALL OUTLINE	SOP20,.4	Y	2 V	85 Cel	-40 Cel	Matte Tin (Sn) - annealed	DUAL	2.65 mm		7.5 mm		0	.032 MHz	30	260	12.8 mm	1	CMOS		SECONDS	3.3 V	Timer or RTC	1.27 mm	R-PDSO-G20	1	Not Qualified	NO	e3
DS3231SN/T&R	Maxim Integrated	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	16	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	I2C	5.5 V					SMALL OUTLINE			2.3 V	85 Cel	-40 Cel	TIN LEAD	DUAL	2.67 mm		7.495 mm			.032 MHz			10.285 mm	1	CMOS			3.3 V		1.27 mm	R-PDSO-G16	1	Not Qualified		e0
DS3231SN+TR	Maxim Integrated		INDUSTRIAL	GULL WING	16	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	I2C	5.5 V				3.3	SMALL OUTLINE	SOP16,.4	Y	2.3 V	85 Cel	-40 Cel	MATTE TIN	DUAL	2.65 mm		7.5 mm						10.3 mm	1	CMOS		SECONDS	3.3 V	Timer or RTC	1.27 mm	R-PDSO-G16		Not Qualified	NO	e3
DS3231SN#T&R	Analog Devices	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	16	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	I2C	5.5 V				3.3	SMALL OUTLINE	SOP16,.4	Y	2.3 V	85 Cel	-40 Cel	MATTE TIN	DUAL	2.67 mm		7.495 mm			.032 MHz	20	260	10.285 mm	1	CMOS		SECONDS	3.3 V	Timer or RTC	1.27 mm	R-PDSO-G16	1	Not Qualified	NO	e3
DS3234SN#T&R	Analog Devices	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	20	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	SERIAL, 4-WIRE/SPI	5.5 V			8	3.3	SMALL OUTLINE	SOP20,.4	Y	2 V	85 Cel	-40 Cel	Matte Tin (Sn) - annealed	DUAL	2.65 mm		7.5 mm		0	.032 MHz			12.8 mm	1	CMOS		SECONDS	3.3 V	Timer or RTC	1.27 mm	R-PDSO-G20	1	Not Qualified	NO	e3
DS1682S/T&R	Maxim Integrated	TIMER, TIME RECORDER	INDUSTRIAL	GULL WING	8	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	SERIAL, 2-WIRE/I2C	5.5 V				3/5	SMALL OUTLINE	SOP8,.25	Y	2.5 V	85 Cel	-40 Cel	TIN LEAD	DUAL	1.75 mm		3.9 mm			.4 MHz		245	4.9 mm	0	CMOS		SECONDS	3 V	Timers or RTCs	1.27 mm	R-PDSO-G8	1	Not Qualified	NO	e0
DS1682S+T&R	Analog Devices	TIMER, TIME RECORDER	INDUSTRIAL	GULL WING	8	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	SERIAL, 2-WIRE/I2C	5.5 V				3/5	SMALL OUTLINE	SOP8,.25	Y	2.5 V	85 Cel	-40 Cel	Matte Tin (Sn) - annealed	DUAL	1.75 mm		3.9 mm			.4 MHz	30	260	4.9 mm	0	CMOS		SECONDS	3 V	Timers or RTCs	1.27 mm	R-PDSO-G8	1	Not Qualified	NO	e3
DS3231SN+	Maxim Integrated	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	16	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	I2C	5.5 V				3.3	SMALL OUTLINE	SOP16,.4	Y	2.3 V	85 Cel	-40 Cel	MATTE TIN	DUAL	2.65 mm		7.5 mm						10.3 mm	1	CMOS		SECONDS	3.3 V	Timer or RTC	1.27 mm	R-PDSO-G16	1	Not Qualified	NO	e3
DS3231SN	Maxim Integrated	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	16	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	I2C	5.5 V					SMALL OUTLINE			2.3 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
DS3231SN#	Analog Devices	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	16	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	I2C	5.5 V				3.3	SMALL OUTLINE	SOP16,.4	Y	2.3 V	85 Cel	-40 Cel	MATTE TIN	DUAL	2.65 mm		7.5 mm		0	.032 MHz	20	260	10.3 mm	1	CMOS		SECONDS	3.3 V	Timer or RTC	1.27 mm	R-PDSO-G16	1	Not Qualified	NO	e3
DS1682S	Maxim Integrated	TIMER, TIME RECORDER	INDUSTRIAL	GULL WING	8	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	SERIAL, 2-WIRE/I2C	5.5 V				3/5	SMALL OUTLINE	SOP8,.25	Y	2.5 V	85 Cel	-40 Cel	TIN LEAD	DUAL	1.75 mm		3.9 mm			.4 MHz	20	245	4.9 mm	0	CMOS		SECONDS	3 V	Timers or RTCs	1.27 mm	R-PDSO-G8	1	Not Qualified	NO	e0
DS1682S+	Analog Devices	TIMER, TIME RECORDER	INDUSTRIAL	GULL WING	8	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	SERIAL, 2-WIRE/I2C	5.5 V				3/5	SMALL OUTLINE	SOP8,.25	Y	2.5 V	85 Cel	-40 Cel	Matte Tin (Sn) - annealed	DUAL	1.75 mm		3.9 mm			.4 MHz	30	260	4.9 mm	0	CMOS		SECONDS	3 V	Timers or RTCs	1.27 mm	R-PDSO-G8	1	Not Qualified	NO	e3
PCF8523TK/1,118	NXP Semiconductors	TIMER, REAL TIME CLOCK	INDUSTRIAL	NO LEAD	8	HVSON	SQUARE	PLASTIC/EPOXY	YES	I2C	5.5 V				1.2/5.5	SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE	SOLCC8,.16,32	Y	1.2 V	85 Cel	-40 Cel		DUAL	1 mm		4 mm			.032 MHz		260	4 mm	1	CMOS		SECONDS	3 V	Timer or RTC	.8 mm	S-PDSO-N8	1	Not Qualified	YES
DS1682S/GG8	Analog Devices	TIMER, TIME RECORDER
DS3231MZ+TRL	Analog Devices	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	8	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	I2C	5.5 V				3.3	SMALL OUTLINE	SOP8,.25	Y	2.3 V	85 Cel	-45 Cel	Matte Tin (Sn) - annealed	DUAL	1.75 mm		3.9 mm				30	260	4.9 mm	1	CMOS		SECONDS	3.3 V	Timer or RTC	1.27 mm	R-PDSO-G8	1	Not Qualified	NO	e3
PCF8563T/5,518	NXP Semiconductors	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	8	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	I2C	5.5 V				2/5	SMALL OUTLINE	SOP8,.25	Y	1.8 V	85 Cel	-40 Cel	NICKEL PALLADIUM GOLD	DUAL	1.75 mm		3.9 mm		0	.032 MHz	30	260	4.9 mm		CMOS		SECONDS	2 V	Timer or RTC	1.27 mm	R-PDSO-G8	2	Not Qualified	YES	e4
DS1307ZN/T&R	Maxim Integrated	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	8	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	I2C	5.5 V				5	SMALL OUTLINE	SOP8,.25	N	4.5 V	85 Cel	-40 Cel	TIN LEAD	DUAL	1.75 mm		3.9 mm			.032 MHz		245	4.9 mm	1	CMOS		SECONDS	5 V	Timers or RTCs	1.27 mm	R-PDSO-G8	1	Not Qualified	YES	e0
DS1307ZN+T&R	Analog Devices	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	8	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	I2C	5.5 V				5	SMALL OUTLINE	SOP8,.25	N	4.5 V	85 Cel	-40 Cel	Matte Tin (Sn) - annealed	DUAL	1.75 mm		3.9 mm			.032 MHz	30	260	4.9 mm	1	CMOS		SECONDS	5 V	Timer or RTC	1.27 mm	R-PDSO-G8	1	Not Qualified	YES	e3
DS3231MZ+	Analog Devices	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	8	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	I2C	5.5 V				3.3	SMALL OUTLINE	SOP8,.25	Y	2.3 V	85 Cel	-40 Cel	Matte Tin (Sn) - annealed	DUAL	1.75 mm		3.9 mm			.4 MHz	30	260	4.9 mm	1	CMOS		SECONDS	3.3 V	Timer or RTC	1.27 mm	R-PDSO-G8	1	Not Qualified	NO	e3
PCF2129AT/2,518	NXP Semiconductors	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	20	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	I2C	4.2 V				2/4	SMALL OUTLINE	SOP20,.4	Y	1.8 V	85 Cel	-40 Cel		DUAL	2.65 mm		7.5 mm				30	260	12.8 mm	1	CMOS		SECONDS	3.3 V	Timers or RTCs	1.27 mm	R-PDSO-G20	3	Not Qualified	YES
MAX31328NELB+T	Analog Devices	TIMER, REAL TIME CLOCK
DS3231S/T&R	Maxim Integrated	TIMER, REAL TIME CLOCK	COMMERCIAL	GULL WING	16	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	I2C	5.5 V				3.3	SMALL OUTLINE	SOP16,.4	Y	2.3 V	70 Cel	0 Cel	MATTE TIN	DUAL	2.67 mm		7.495 mm			.032 MHz	30	260	10.285 mm	1	CMOS		SECONDS	3.3 V	Timer or RTC	1.27 mm	R-PDSO-G16	1	Not Qualified	NO	e3
DS3231S#T&R	Analog Devices	TIMER, REAL TIME CLOCK	COMMERCIAL	GULL WING	16	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	I2C	5.5 V					SMALL OUTLINE			2.3 V	70 Cel	0 Cel	Matte Tin (Sn) - annealed	DUAL	2.65 mm		7.5 mm			.032 MHz	30	260	10.3 mm	1	CMOS			3.3 V		1.27 mm	R-PDSO-G16	1	Not Qualified		e3
DS3231S+TR	Analog Devices		COMMERCIAL	GULL WING	16	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	I2C	5.5 V				3.3	SMALL OUTLINE	SOP16,.4	Y	2.3 V	70 Cel	0 Cel	Matte Tin (Sn) - annealed	DUAL	2.65 mm		7.5 mm						10.3 mm	1	CMOS		SECONDS	3.3 V	Timer or RTC	1.27 mm	R-PDSO-G16		Not Qualified	NO	e3
DS1307ZN	Maxim Integrated	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	8	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	I2C	5.5 V				5	SMALL OUTLINE	SOP8,.25	N	4.5 V	85 Cel	-40 Cel	TIN LEAD	DUAL	1.75 mm		3.9 mm			.032 MHz		245	4.9 mm	1	CMOS		SECONDS	5 V	Timers or RTCs	1.27 mm	R-PDSO-G8	1	Not Qualified	YES	e0
DS1307ZN+	Analog Devices	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	8	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	I2C	5.5 V				5	SMALL OUTLINE	SOP8,.25	N	4.5 V	85 Cel	-40 Cel	Matte Tin (Sn) - annealed	DUAL	1.75 mm		3.9 mm			.032 MHz	30	260	4.9 mm	1	CMOS		SECONDS	5 V	Timer or RTC	1.27 mm	R-PDSO-G8	1	Not Qualified	YES	e3
MCP79410-I/SN	Microchip Technology	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	8	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	I2C	5.5 V	8	TS 16949		2/5	SMALL OUTLINE	SOP8,.23	Y	1.8 V	85 Cel	-40 Cel	MATTE TIN	DUAL	1.75 mm	64	3.9 mm	ALSO OPERATES AT 100KHZ WITH 1.8 V NOMINAL	0	.032 MHz	30	260	4.9 mm	1	CMOS	3 mA	SECONDS	2.5 V	Timers or RTCs	1.27 mm	R-PDSO-G8	1	Not Qualified	NO	e3
MAX31328NELB+	Analog Devices	TIMER, REAL TIME CLOCK
DS1307Z/T&R	Maxim Integrated	TIMER, REAL TIME CLOCK	COMMERCIAL	GULL WING	8	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	I2C	5.5 V				5	SMALL OUTLINE	SOP8,.25	N	4.5 V	70 Cel	0 Cel	TIN LEAD	DUAL	1.75 mm		3.9 mm			.032 MHz			4.9 mm	1	CMOS		SECONDS	5 V	Timers or RTCs	1.27 mm	R-PDSO-G8	1	Not Qualified	YES	e0
DS1307Z+T&R	Analog Devices	TIMER, REAL TIME CLOCK	COMMERCIAL	GULL WING	8	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	I2C	5.5 V				5	SMALL OUTLINE	SOP8,.25	N	4.5 V	70 Cel	0 Cel	Matte Tin (Sn) - annealed	DUAL	1.75 mm		3.9 mm			.032 MHz	30	260	4.9 mm	1	CMOS		SECONDS	5 V	Timer or RTC	1.27 mm	R-PDSO-G8	1	Not Qualified	YES	e3
DS1338Z-33/T&R	Maxim Integrated	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	8	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	I2C	5.5 V				3.3	SMALL OUTLINE	SOP8,.25	N	3 V	85 Cel	-40 Cel	TIN LEAD	DUAL	1.75 mm		3.9 mm			.032 MHz			4.9 mm	1	CMOS		SECONDS	3.3 V	Timer or RTC	1.27 mm	R-PDSO-G8	1	Not Qualified	NO	e0
DS1338Z-33+T&R	Analog Devices	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	8	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	I2C	3.63 V				3.3	SMALL OUTLINE	SOP8,.25	N	3 V	85 Cel	-40 Cel	Matte Tin (Sn) - annealed	DUAL	1.75 mm		3.9 mm			.032 MHz	30	260	4.9 mm	1	CMOS		SECONDS	3.3 V	Timer or RTC	1.27 mm	R-PDSO-G8	1	Not Qualified	NO	e3
STWD100NYWY3F	STMicroelectronics	TIMER, PROGRAMMABLE	AUTOMOTIVE	GULL WING	5	LSSOP	RECTANGULAR	PLASTIC/EPOXY	YES		5.5 V					SMALL OUTLINE, LOW PROFILE, SHRINK PITCH			2.7 V	125 Cel	-40 Cel	NICKEL PALLADIUM GOLD	DUAL	1.45 mm		1.6 mm				30	260	2.9 mm		CMOS			5 V		.95 mm	R-PDSO-G5	1	Not Qualified		e4
DS3231S+	Maxim Integrated	TIMER, REAL TIME CLOCK	COMMERCIAL	GULL WING	16	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	I2C	5.5 V				3.3	SMALL OUTLINE	SOP16,.4	Y	2.3 V	70 Cel	0 Cel	MATTE TIN	DUAL	2.65 mm		7.5 mm						10.3 mm	1	CMOS		SECONDS	3.3 V	Timer or RTC	1.27 mm	R-PDSO-G16	1	Not Qualified	NO	e3
DS3231S	Maxim Integrated	TIMER, REAL TIME CLOCK	COMMERCIAL	GULL WING	16	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	I2C	5.5 V					SMALL OUTLINE			2.3 V	70 Cel	0 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
DS3231S#	Analog Devices	TIMER, REAL TIME CLOCK	COMMERCIAL	GULL WING	16	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	I2C	5.5 V				3.3	SMALL OUTLINE	SOP16,.4	Y	2.3 V	70 Cel	0 Cel	Matte Tin (Sn) - annealed	DUAL	2.65 mm		7.5 mm		0	.032 MHz			10.3 mm	1	CMOS		SECONDS	3.3 V	Timer or RTC	1.27 mm	R-PDSO-G16		Not Qualified	NO	e3
DS3231MZ/V+T	Analog Devices	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	8	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	I2C	5.5 V		AEC-Q100		3.3	SMALL OUTLINE	SOP8,.25	Y	2.3 V	85 Cel	-45 Cel	MATTE TIN	DUAL	1.75 mm		3.9 mm				30	260	4.9 mm	1	CMOS		SECONDS	3.3 V	Timer or RTC	1.27 mm	R-PDSO-G8	1	Not Qualified	NO	e3
MCP7940N-I/SN	Microchip Technology	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	8	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	I2C	5.5 V	8	AEC-Q100		2/5	SMALL OUTLINE	SOP8,.23	Y	1.8 V	85 Cel	-40 Cel	MATTE TIN	DUAL	1.75 mm	64	3.9 mm		0	.032 MHz	30	260	4.9 mm	1	CMOS	.4 mA	SECONDS	2.5 V	Timer or RTC	1.27 mm	R-PDSO-G8	1	Not Qualified	YES	e3
CS82C54-10Z96	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	10 MHz	30	245	11.505 mm	3	CMOS			5 V		1.27 mm	S-PQCC-J28	3	Not Qualified		e3
PCF8523TS/1,118	NXP Semiconductors	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	14	TSSOP	RECTANGULAR	PLASTIC/EPOXY	YES	I2C	5.5 V				1.2/5.5	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	TSSOP14,.25	Y	1.2 V	85 Cel	-40 Cel		DUAL	1.1 mm		4.4 mm			.032 MHz		260	5 mm	1	CMOS		SECONDS	3 V	Timer or RTC	.65 mm	R-PDSO-G14	1	Not Qualified	YES
PCF85063ATL/1,118	NXP Semiconductors	TIMER, REAL TIME CLOCK	INDUSTRIAL	NO LEAD	10	HVSON	SQUARE	PLASTIC/EPOXY	YES	I2C	5.5 V				1.2/5	SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE	SOLCC10,.11,20	Y	.9 V	85 Cel	-40 Cel	NICKEL PALLADIUM GOLD	DUAL	.5 mm		2.6 mm				30	260	2.6 mm	1	CMOS		SECONDS	3.3 V	Timer or RTC	.5 mm	S-PDSO-N10	1	Not Qualified	YES	e4
DS1307Z	Maxim Integrated	TIMER, REAL TIME CLOCK	COMMERCIAL	GULL WING	8	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	I2C	5.5 V				5	SMALL OUTLINE	SOP8,.25	N	4.5 V	70 Cel	0 Cel	TIN LEAD	DUAL	1.75 mm		3.9 mm			.032 MHz	20	240	4.9 mm	1	CMOS		SECONDS	5 V	Timers or RTCs	1.27 mm	R-PDSO-G8	1	Not Qualified	YES	e0
DS1307Z+	Analog Devices	TIMER, REAL TIME CLOCK	COMMERCIAL	GULL WING	8	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	I2C	5.5 V				5	SMALL OUTLINE	SOP8,.25	N	4.5 V	70 Cel	0 Cel	Matte Tin (Sn) - annealed	DUAL	1.75 mm		3.9 mm			.032 MHz	30	260	4.9 mm	1	CMOS		SECONDS	5 V	Timer or RTC	1.27 mm	R-PDSO-G8	1	Not Qualified	YES	e3
DS3232MZ+TRL	Analog Devices	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	8	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	I2C	4.5 V					SMALL OUTLINE			2.3 V	85 Cel	-40 Cel	Matte Tin (Sn) - annealed	DUAL	1.75 mm		3.9 mm				30	260	4.9 mm	1	CMOS			3.3 V		1.27 mm	R-PDSO-G8	1			e3
M4T28-BR12SH1	STMicroelectronics	TIMER, REAL TIME CLOCK	COMMERCIAL	PIN/PEG	4		RECTANGULAR	UNSPECIFIED	NO		3 V					SPECIAL SHAPE				70 Cel	0 Cel	NICKEL GOLD	DUAL										1	CMOS			2.8 V			R-XDSS-P4		Not Qualified		e4
RV-3028-C732.768KHZ1PPM-TA-QC	Micro Crystal Ag	TIMER, REAL TIME CLOCK		NO LEAD	8	VSON	RECTANGULAR	CERAMIC, METAL-SEALED COFIRED	YES	I2C	5.5 V	8				SMALL OUTLINE, VERY THIN PROFILE	SOLCC8,.06,35	Y	1.1 V	85 Cel	-40 Cel		DUAL	.8 mm	1	1.5 mm						3.2 mm		CMOS	.00000006 mA	SECONDS	3 V		.9 mm	R-CDSO-N8			NO
DS1338Z-33	Maxim Integrated	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	8	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	I2C	5.5 V				3.3	SMALL OUTLINE	SOP8,.25	N	3 V	85 Cel	-40 Cel	TIN LEAD	DUAL	1.75 mm		3.9 mm			.032 MHz		245	4.9 mm	1	CMOS		SECONDS	3.3 V	Timer or RTC	1.27 mm	R-PDSO-G8	1	Not Qualified	NO	e0
DS1338Z-33+	Analog Devices	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	8	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	I2C	5.5 V				3.3	SMALL OUTLINE	SOP8,.25	N	3 V	85 Cel	-40 Cel	Matte Tin (Sn) - annealed	DUAL	1.75 mm		3.9 mm		0	.032 MHz	30	260	4.9 mm	1	CMOS		SECONDS	3.3 V	Timer or RTC	1.27 mm	R-PDSO-G8	1	Not Qualified	NO	e3

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.