20 Timers & Real-Time Clocks 177

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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	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
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
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
DS3232SN#T&R	Analog Devices	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	20	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	I2C	5.5 V			3.3	SMALL OUTLINE	SOP20,.4	Y	2.3 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
DS3232SN#	Analog Devices	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	20	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	I2C	5.5 V			3.3	SMALL OUTLINE	SOP20,.4	Y	2.3 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
DS1305EN/T&R	Maxim Integrated	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	20	TSSOP	RECTANGULAR	PLASTIC/EPOXY	YES	SERIAL, 3-WIRE	5.5 V			3/5	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	TSSOP20,.25	Y	2 V	85 Cel	-40 Cel	Tin/Lead (Sn/Pb)	DUAL	1.1 mm		4.4 mm		0	.032 MHz	20	240	6.5 mm	0	CMOS		SECONDS	5 V	Timer or RTC	.65 mm	R-PDSO-G20	1	Not Qualified	YES	e0
DS1305EN+T&R	Analog Devices	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	20	TSSOP	RECTANGULAR	PLASTIC/EPOXY	YES	SERIAL, 3-WIRE	5.5 V			3/5	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	TSSOP20,.25	Y	2 V	85 Cel	-40 Cel	Matte Tin (Sn) - annealed	DUAL	1.1 mm		4.4 mm		0	.032 MHz	30	260	6.5 mm	0	CMOS		SECONDS	5 V	Timer or RTC	.65 mm	R-PDSO-G20	1	Not Qualified	YES	e3
RTC-8564JE	Seiko Epson	TIMER, REAL TIME CLOCK	INDUSTRIAL	J BEND	20	SOJ	RECTANGULAR	PLASTIC/EPOXY	YES	I2C	5.5 V				SMALL OUTLINE			1.8 V	85 Cel	-40 Cel		DUAL	1.5 mm		5.4 mm		0	.032 MHz	NOT SPECIFIED	NOT SPECIFIED	7 mm	0	CMOS			3 V		.65 mm	R-PDSO-J20		Not Qualified
PCF2127AT/2Y	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	NICKEL PALLADIUM GOLD	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	e4
RTC-8564JE:B3:ROHS	Seiko Epson	TIMER, REAL TIME CLOCK	INDUSTRIAL	J BEND	20	SOJ	RECTANGULAR	PLASTIC/EPOXY	YES	I2C	5.5 V			1.8/5	SMALL OUTLINE	SSOJ20,.25	Y	1.8 V	85 Cel	-40 Cel	TIN SILVER	DUAL	1.5 mm		5.4 mm					260	7 mm		CMOS		SECONDS	3 V	Timers or RTCs	.65 mm	R-PDSO-J20		Not Qualified	YES	e2
DS3234S#T&R	Analog Devices	TIMER, REAL TIME CLOCK	COMMERCIAL	GULL WING	20	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	SERIAL, 4-WIRE/SPI	5.5 V		8		SMALL OUTLINE			2 V	70 Cel	0 Cel		DUAL	2.65 mm		7.5 mm		0	.032 MHz			12.8 mm	1	CMOS			3.3 V		1.27 mm	R-PDSO-G20	1	Not Qualified
DS3234S#	Analog Devices	TIMER, REAL TIME CLOCK	COMMERCIAL	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	70 Cel	0 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
DS3232SN-C01#T&R	Maxim Integrated	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	20	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	I2C	5.5 V				SMALL OUTLINE			2.3 V	85 Cel	-40 Cel		DUAL	2.67 mm		7.495 mm		0	.032 MHz	NOT SPECIFIED	NOT SPECIFIED	12.82 mm	1	CMOS			3.3 V		1.27 mm	R-PDSO-G20		Not Qualified
DS1305EN	Maxim Integrated	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	20	TSSOP	RECTANGULAR	PLASTIC/EPOXY	YES	SERIAL, 3-WIRE	5.5 V			3/5	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	TSSOP20,.25	Y	2 V	85 Cel	-40 Cel	TIN LEAD	DUAL	1.1 mm		4.4 mm		0	.032 MHz	20	240	6.5 mm	0	CMOS		SECONDS	5 V	Timer or RTC	.65 mm	R-PDSO-G20	1	Not Qualified	YES	e0
DS1305EN+	Analog Devices	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	20	TSSOP	RECTANGULAR	PLASTIC/EPOXY	YES	SERIAL, 3-WIRE	5.5 V			3/5	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	TSSOP20,.25	Y	2 V	85 Cel	-40 Cel	Matte Tin (Sn) - annealed	DUAL	1.1 mm		4.4 mm		0	.032 MHz	30	260	6.5 mm	0	CMOS		SECONDS	5 V	Timer or RTC	.65 mm	R-PDSO-G20	1	Not Qualified	YES	e3
RTC-8564JE:B0:ROHS	Seiko Epson	TIMER, REAL TIME CLOCK	INDUSTRIAL	J BEND	20	LSOJ	RECTANGULAR	PLASTIC/EPOXY	YES	I2C	5.5 V			1.8/5	SMALL OUTLINE, LOW PROFILE	SOJ20,.24,25	Y	1.8 V	85 Cel	-40 Cel	TIN SILVER	DUAL	1.5 mm		5.4 mm			.4 MHz		260	7 mm		CMOS	.0008 mA	SECONDS	3 V	Timers or RTCs	.65 mm	R-PDSO-J22		Not Qualified	YES	e2
RTC-8564JE:BB:ROHS	Seiko Epson	TIMER, REAL TIME CLOCK	INDUSTRIAL	J BEND	20	SOJ	RECTANGULAR	PLASTIC/EPOXY	YES	I2C	5.5 V				SMALL OUTLINE			1.8 V	85 Cel	-40 Cel	TIN SILVER	DUAL	1.5 mm		5.4 mm					260	7 mm		CMOS			3 V		.65 mm	R-PDSO-J20				e2
DS1305EN+T&R/C01	Analog Devices	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	20	TSSOP	RECTANGULAR	PLASTIC/EPOXY	YES	SERIAL, 3-WIRE	5.5 V				SMALL OUTLINE, THIN PROFILE, SHRINK PITCH			2 V	85 Cel	-40 Cel		DUAL	1.1 mm		4.4 mm						6.5 mm		CMOS			5 V		.65 mm	R-PDSO-G20	1
DS3232S#	Analog Devices	TIMER, REAL TIME CLOCK	COMMERCIAL	GULL WING	20	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	I2C	5.5 V			3.3	SMALL OUTLINE	SOP20,.4	Y	2.3 V	70 Cel	0 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
RTC-8564JEB	Seiko Epson	TIMER, REAL TIME CLOCK	INDUSTRIAL	J BEND	20	SOJ	RECTANGULAR	PLASTIC/EPOXY	YES	I2C	5.5 V				SMALL OUTLINE			1.8 V	85 Cel	-40 Cel	TIN LEAD	DUAL	1.5 mm		5.4 mm						7 mm	1	CMOS			2 V		.65 mm	R-PDSO-J20		Not Qualified		e0
PCF2129AT/2	NXP Semiconductors	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	20	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	I2C	4.2 V				SMALL OUTLINE			1.8 V	85 Cel	-40 Cel	NICKEL PALLADIUM GOLD	DUAL	2.65 mm		7.5 mm			.032 MHz	30	260	12.8 mm	1	CMOS			2 V		1.27 mm	R-PDSO-G20	3			e4
DS3232S#T&R	Analog Devices	TIMER, REAL TIME CLOCK	COMMERCIAL	GULL WING	20	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	I2C	5.5 V			3.3	SMALL OUTLINE	SOP20,.4	Y	2.3 V	70 Cel	0 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
ISL12020MIRZ-T7A	Renesas Electronics	TIMER, REAL TIME CLOCK	INDUSTRIAL	NO LEAD	20	HLSON	RECTANGULAR	PLASTIC/EPOXY	YES	I2C	5.5 V	8			SMALL OUTLINE, HEAT SINK/SLUG, LOW PROFILE	SOLCC20,.16,20	Y	2.7 V	85 Cel	-40 Cel	MATTE TIN	DUAL	1.3 mm	128K	4 mm		0	.032768 MHz	30	260	5.5 mm		CMOS	.5 mA	SECONDS	3 V		.5 mm	R-PDSO-N20	1		YES	e3
ISL12020MIRZ-T	Renesas Electronics	TIMER, REAL TIME CLOCK	INDUSTRIAL	NO LEAD	20	HLSON	RECTANGULAR	PLASTIC/EPOXY	YES	I2C	5.5 V	8			SMALL OUTLINE, HEAT SINK/SLUG, LOW PROFILE	SOLCC20,.16,20	Y	2.7 V	85 Cel	-40 Cel	MATTE TIN	DUAL	1.3 mm	128K	4 mm		0	.032768 MHz	30	260	5.5 mm		CMOS	.5 mA	SECONDS	3 V		.5 mm	R-PDSO-N20	1		YES	e3
DS3232SN#-W	Analog Devices	TIMER, REAL TIME CLOCK		GULL WING	20	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	I2C	5.5 V	8			SMALL OUTLINE	SOP20,.4	Y	2.3 V	85 Cel	-40 Cel		DUAL	2.65 mm	236	7.5 mm		0	.032 MHz			12.8 mm	1	CMOS	.325 mA	SECONDS	3.3 V		1.27 mm	R-PDSO-G20			NO
Q41856471000100	Seiko Epson	TIMER, REAL TIME CLOCK	INDUSTRIAL	J BEND	20	SOJ	RECTANGULAR	PLASTIC/EPOXY	YES	I2C	5.5 V				SMALL OUTLINE			1.7 V	85 Cel	-40 Cel		DUAL	1.5 mm		5.4 mm		0	.032 MHz			7 mm		CMOS			3 V		.65 mm	R-PDSO-J20
PCF2129AT/1,512	NXP Semiconductors	TIMER, MEMORY REFRESH	INDUSTRIAL	GULL WING	20	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	SERIAL, 4 WIRE/SPI				2/4	SMALL OUTLINE	SOP20,.4	Y		85 Cel	-40 Cel	MATTE TIN	DUAL											CMOS		SECONDS		Timers or RTCs	1.27 mm	R-PDSO-G20	1	Not Qualified	YES	e3
PCF2129AT/1,518	NXP Semiconductors	TIMER, MEMORY REFRESH	INDUSTRIAL	GULL WING	20	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	SERIAL, 4 WIRE/SPI				2/4	SMALL OUTLINE	SOP20,.4	Y		85 Cel	-40 Cel	MATTE TIN	DUAL											CMOS		SECONDS		Timers or RTCs	1.27 mm	R-PDSO-G20	1	Not Qualified	YES	e3
PCF2129AT/1	NXP Semiconductors	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	20	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	I2C	4.2 V				SMALL OUTLINE			1.2 V	85 Cel	-40 Cel		DUAL	2.65 mm		7.5 mm		0	.032 MHz			12.8 mm		CMOS			3 V		1.27 mm	R-PDSO-G20		Not Qualified
PCF2129AT	NXP Semiconductors	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	20	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	I2C	4.2 V				SMALL OUTLINE			1.8 V	85 Cel	-40 Cel		DUAL	2.65 mm		7.5 mm						12.8 mm	1	CMOS			2 V		1.27 mm	R-PDSO-G20
ISL12020MIRZ	Renesas Electronics	TIMER, REAL TIME CLOCK	INDUSTRIAL	NO LEAD	20	HLSON	RECTANGULAR	PLASTIC/EPOXY	YES	I2C	5.5 V	8			SMALL OUTLINE, HEAT SINK/SLUG, LOW PROFILE	SOLCC20,.16,20	Y	2.7 V	85 Cel	-40 Cel	MATTE TIN	DUAL	1.3 mm	128K	4 mm		0	.032768 MHz	30	260	5.5 mm		CMOS	.5 mA	SECONDS	3 V		.5 mm	R-PDSO-N20	1		YES	e3
DS1306EN	Maxim Integrated	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	20	TSSOP	RECTANGULAR	PLASTIC/EPOXY	YES	SERIAL, 3-WIRE	5.5 V			3/5	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	TSSOP20,.25	Y	2 V	85 Cel	-40 Cel	Tin/Lead (Sn85Pb15)	DUAL	1.1 mm		4.4 mm		0	.032 MHz	40	260	6.5 mm	0	CMOS		SECONDS	5 V	Timer or RTC	.65 mm	R-PDSO-G20	1	Not Qualified	YES	e0
DS1306EN+	Analog Devices	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	20	TSSOP	RECTANGULAR	PLASTIC/EPOXY	YES	SERIAL, 3-WIRE	5.5 V			3/5	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	TSSOP20,.25	Y	2 V	85 Cel	-40 Cel	Matte Tin (Sn) - annealed	DUAL	1.1 mm		4.4 mm		0	.032 MHz	30	260	6.5 mm	0	CMOS		SECONDS	5 V	Timer or RTC	.65 mm	R-PDSO-G20	1	Not Qualified	YES	e3
DS1306EN/T&R	Maxim Integrated	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	20	TSSOP	RECTANGULAR	PLASTIC/EPOXY	YES	SERIAL, 3-WIRE	5.5 V			3/5	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	TSSOP20,.25	Y	2 V	85 Cel	-40 Cel	TIN LEAD	DUAL	1.1 mm		4.4 mm		0	.032 MHz			6.5 mm	0	CMOS		SECONDS	5 V	Timer or RTC	.65 mm	R-PDSO-G20	1	Not Qualified	YES	e0
DS1306EN+T&R	Analog Devices	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	20	TSSOP	RECTANGULAR	PLASTIC/EPOXY	YES	SERIAL, 3-WIRE	5.5 V			3/5	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	TSSOP20,.25	Y	2 V	85 Cel	-40 Cel	Matte Tin (Sn) - annealed	DUAL	1.1 mm		4.4 mm		0	.032 MHz	30	260	6.5 mm	0	CMOS		SECONDS	5 V	Timer or RTC	.65 mm	R-PDSO-G20	1	Not Qualified	YES	e3
PCF2127AT/2	NXP Semiconductors	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	20	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	I2C	4.2 V				SMALL OUTLINE			1.8 V	85 Cel	-40 Cel	NICKEL PALLADIUM GOLD	DUAL	2.65 mm		7.5 mm			.032 MHz	30	260	12.8 mm	1	CMOS			2 V		1.27 mm	R-PDSO-G20	3			e4
DS1306E	Maxim Integrated	TIMER, REAL TIME CLOCK	COMMERCIAL	GULL WING	20	TSSOP	RECTANGULAR	PLASTIC/EPOXY	YES	SERIAL, 3-WIRE	5.5 V			3/5	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	TSSOP20,.25	Y	2 V	70 Cel	0 Cel	TIN LEAD	DUAL	1.1 mm		4.4 mm		0	.032 MHz		245	6.5 mm	0	CMOS		SECONDS	5 V	Timer or RTC	.65 mm	R-PDSO-G20	1	Not Qualified	YES	e0
DS1306E+	Analog Devices	TIMER, REAL TIME CLOCK	COMMERCIAL	GULL WING	20	TSSOP	RECTANGULAR	PLASTIC/EPOXY	YES	SERIAL, 3-WIRE	5.5 V			3/5	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	TSSOP20,.25	Y	2 V	70 Cel	0 Cel	Matte Tin (Sn) - annealed	DUAL	1.1 mm		4.4 mm		0	.032 MHz	30	260	6.5 mm	0	CMOS		SECONDS	5 V	Timer or RTC	.65 mm	R-PDSO-G20	1	Not Qualified	YES	e3
DS1305E	Maxim Integrated	TIMER, REAL TIME CLOCK	COMMERCIAL	GULL WING	20	TSSOP	RECTANGULAR	PLASTIC/EPOXY	YES	SERIAL, 3-WIRE	5.5 V			3/5	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	TSSOP20,.25	Y	2 V	70 Cel	0 Cel	TIN LEAD	DUAL	1.1 mm		4.4 mm		0	.032 MHz	20	240	6.5 mm	0	CMOS		SECONDS	5 V	Timer or RTC	.65 mm	R-PDSO-G20	1	Not Qualified	YES	e0
DS1305E+	Analog Devices	TIMER, REAL TIME CLOCK	COMMERCIAL	GULL WING	20	TSSOP	RECTANGULAR	PLASTIC/EPOXY	YES	SERIAL, 3-WIRE	5.5 V			3/5	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	TSSOP20,.25	Y	2 V	70 Cel	0 Cel	Matte Tin (Sn) - annealed	DUAL	1.1 mm		4.4 mm		0	.032 MHz	30	260	6.5 mm	0	CMOS		SECONDS	5 V	Timer or RTC	.65 mm	R-PDSO-G20	1	Not Qualified	YES	e3
DS1305E/T&R	Maxim Integrated	TIMER, REAL TIME CLOCK	COMMERCIAL	GULL WING	20	TSSOP	RECTANGULAR	PLASTIC/EPOXY	YES	SERIAL, 3-WIRE	5.5 V			3/5	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	TSSOP20,.25	Y	2 V	70 Cel	0 Cel	TIN LEAD	DUAL	1.1 mm		4.4 mm		0	.032 MHz			6.5 mm	0	CMOS		SECONDS	5 V	Timer or RTC	.65 mm	R-PDSO-G20	1	Not Qualified	YES	e0
DS1305E+T&R	Analog Devices	TIMER, REAL TIME CLOCK	COMMERCIAL	GULL WING	20	TSSOP	RECTANGULAR	PLASTIC/EPOXY	YES	SERIAL, 3-WIRE	5.5 V			3/5	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	TSSOP20,.25	Y	2 V	70 Cel	0 Cel	Matte Tin (Sn) - annealed	DUAL	1.1 mm		4.4 mm		0	.032 MHz	30	260	6.5 mm	0	CMOS		SECONDS	5 V	Timer or RTC	.65 mm	R-PDSO-G20	1	Not Qualified	YES	e3
PCF2127AT/1,512	NXP Semiconductors		INDUSTRIAL	GULL WING	20	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	SERIAL, 4 WIRE/SPI				2/4	SMALL OUTLINE	SOP20,.4	Y		85 Cel	-40 Cel		DUAL											CMOS		SECONDS		Timers or RTCs	1.27 mm	R-PDSO-G20		Not Qualified	YES
ISL12022MAIBZ-T	Renesas Electronics	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	20	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	I2C; SERIAL	5.5 V				SMALL OUTLINE			2.7 V	85 Cel	-40 Cel	MATTE TIN	DUAL	2.65 mm		7.5 mm	CASE NO : 64026634	0		30	260	12.8 mm	0	CMOS			3 V		1.27 mm	R-PDSO-G20	1			e3
CDP68HC68T1MZ	Renesas Electronics	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	20	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	SERIAL, 3-WIRE	5.25 V			3.3/5	SMALL OUTLINE	SOP20,.4	Y	4.75 V	85 Cel	-40 Cel	Matte Tin (Sn) - annealed	DUAL	2.65 mm		7.5 mm			4.1943 MHz	30	260	12.8 mm	1	CMOS		SECONDS	5 V	Timers or RTCs	1.27 mm	R-PDSO-G20	3	Not Qualified	YES	e3
ISL12022MAIBZ	Renesas Electronics	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	20	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	I2C; SERIAL	5.5 V				SMALL OUTLINE			2.7 V	85 Cel	-40 Cel	MATTE TIN	DUAL	2.65 mm		7.5 mm	CASE NO : 64026634	0		30	260	12.8 mm	0	CMOS			3 V		1.27 mm	R-PDSO-G20	1			e3
ISL12022MIBZ-TR5421	Renesas Electronics	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	20	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	I2C	5.5 V			3/5	SMALL OUTLINE	SOP20,.4	Y	2.7 V	85 Cel	-40 Cel	Matte Tin (Sn) - annealed	DUAL	2.65 mm		7.5 mm			.032 MHz	30	260	12.8 mm		CMOS		SECONDS	3 V	Timer or RTC	1.27 mm	R-PDSO-G20	1	Not Qualified	NO	e3
ISL12022MIBZ-T	Renesas Electronics	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	20	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	I2C; SERIAL	5.5 V				SMALL OUTLINE			2.7 V	85 Cel	-40 Cel	MATTE TIN	DUAL	2.65 mm		7.5 mm	ALSO OPERATES WITH 5 V NOMINAL	0		30	260	12.8 mm		CMOS			3 V		1.27 mm	R-PDSO-G20	1			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.