DS1344E-3+T&R

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Analog Devices Inc./Maxim Integrated

IC RTC CLK/CALENDAR SPI 20TSSOP

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DS1344E-3+T&R

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Analog Devices Inc./Maxim Integrated

IC RTC CLK/CALENDAR SPI 20TSSOP

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DocumentsDatasheet Tips for Writing Bulletproof Real-Time Clock Control Code

Specifications Pricing Series Description Documents

Technical Specifications

Parameters and characteristics for this part

Specification	DS1344E-3+T&R

Features	Leap Year, NVRAM, Alarm, Square Wave Output, Trickle Charger
Interface	SPI
Memory Size	96 B
Mounting Type	Surface Mount
Operating Temperature [Max]	85 °C
Operating Temperature [Min]	-40 °C
Package / Case	20-TSSOP
Package / Case [x]	0.173 in
Package / Case [y]	4.4 mm
Supplier Device Package	20-TSSOP
Time Format	HH:MM:SS (12/24 hr)
Type	Clock/Calendar
Voltage - Supply [Max]	5.5 V
Voltage - Supply [Min]	2.7 V
Voltage - Supply, Battery [Max]	5.5 V
Voltage - Supply, Battery [Min]	1.3 V

DS1344 Series

Part	Memory Size	Package / Case [y]	Package / Case	Package / Case [x]	Voltage - Supply [Min]	Voltage - Supply [Max]	Mounting Type	Type	Time Format	Operating Temperature [Max]	Operating Temperature [Min]	Interface	Voltage - Supply, Battery [Min]	Voltage - Supply, Battery [Max]	Supplier Device Package	Features	Current - Timekeeping (Max) [Max]	Current - Timekeeping (Max) [Min]
Analog Devices Inc./Maxim Integrated DS1344E-3+	96 B	4.4 mm	20-TSSOP	0.173 in	2.7 V	5.5 V	Surface Mount	Clock/Calendar	HH:MM:SS (12/24 hr)	85 °C	-40 °C	SPI	1.3 V	5.5 V	20-TSSOP	Alarm Leap Year NVRAM Square Wave Output Trickle Charger
Analog Devices Inc./Maxim Integrated DS1344E-18+	96 B	4.4 mm	20-TSSOP	0.173 in	1.71 V	5.5 V	Surface Mount	Clock/Calendar	HH:MM:SS (12/24 hr)	85 °C	-40 °C	SPI	1.3 V	5.5 V	20-TSSOP	Alarm Leap Year NVRAM Square Wave Output Trickle Charger
Analog Devices Inc./Maxim Integrated DS1344D-3+	96 B		14-WFDFN Exposed Pad		2.7 V	5.5 V	Surface Mount	Clock/Calendar	HH:MM:SS (12/24 hr)	85 °C	-40 °C	SPI	1.3 V	5.5 V	14-TDFN (3x3)	Alarm Leap Year NVRAM Square Wave Output Trickle Charger
Analog Devices Inc./Maxim Integrated DS1344E-3+T&R	96 B	4.4 mm	20-TSSOP	0.173 in	2.7 V	5.5 V	Surface Mount	Clock/Calendar	HH:MM:SS (12/24 hr)	85 °C	-40 °C	SPI	1.3 V	5.5 V	20-TSSOP	Alarm Leap Year NVRAM Square Wave Output Trickle Charger
Analog Devices Inc./Maxim Integrated DS1344D-18+	96 B		14-WFDFN Exposed Pad		1.71 V	5.5 V	Surface Mount	Clock/Calendar	HH:MM:SS (12/24 hr)	85 °C	-40 °C	SPI	1.3 V	5.5 V	14-TDFN (3x3)	Alarm Leap Year NVRAM Square Wave Output Trickle Charger
Analog Devices Inc./Maxim Integrated DS1344D-18+T&R	96 B		14-WFDFN Exposed Pad		1.71 V	5.5 V	Surface Mount	Clock/Calendar	HH:MM:SS (12/24 hr)	85 °C	-40 °C	SPI	1.3 V	5.5 V	14-TDFN (3x3)	Alarm Leap Year NVRAM Square Wave Output Trickle Charger
Analog Devices Inc./Maxim Integrated DS1344E-18+T&R	96 B	4.4 mm	20-TSSOP	0.173 in	1.71 V	5.5 V	Surface Mount	Clock/Calendar	HH:MM:SS (12/24 hr)	85 °C	-40 °C	SPI	1.3 V	5.5 V	20-TSSOP	Alarm Leap Year NVRAM Square Wave Output Trickle Charger
Analog Devices Inc./Maxim Integrated DS1344D-3+T&R	96 B		14-WFDFN Exposed Pad		2.7 V	5.5 V	Surface Mount	Clock/Calendar	HH:MM:SS (12/24 hr)	85 °C	-40 °C	SPI	1.3 V	5.5 V	14-TDFN (3x3)	Alarm Leap Year NVRAM Square Wave Output Trickle Charger
Analog Devices Inc./Maxim Integrated DS1344E-33+	96 B	4.4 mm	20-TSSOP	0.173 in	3 V	5.5 V	Surface Mount	Clock/Calendar	HH:MM:SS (12/24 hr)	85 °C	-40 °C	SPI	1.3 V	5.5 V	20-TSSOP	Alarm Leap Year NVRAM Square Wave Output Trickle Charger	160 µA	120 µA
Analog Devices Inc./Maxim Integrated DS1344D-33+T&R	96 B		14-WFDFN Exposed Pad		3 V	5.5 V	Surface Mount	Clock/Calendar	HH:MM:SS (12/24 hr)	85 °C	-40 °C	SPI	1.3 V	5.5 V	14-TDFN (3x3)	Alarm Leap Year NVRAM Square Wave Output Trickle Charger	160 µA	120 µA

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$

Digikey	Cut Tape (CT)	1	$ 7.23
		10	$ 4.93
		25	$ 4.33
		100	$ 3.66
		250	$ 3.34
		500	$ 3.14
		1000	$ 2.98
	Digi-Reel®	1	$ 7.23
		10	$ 4.93
		25	$ 4.33
		100	$ 3.66
		250	$ 3.34
		500	$ 3.14
		1000	$ 2.98
	Tape & Reel (TR)	2500	$ 2.81