DS1556-70IND+

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Analog Devices Inc./Maxim Integrated

IC RTC CLK/CALENDAR PAR 32EDIP

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DS1556-70IND+

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Analog Devices Inc./Maxim Integrated

IC RTC CLK/CALENDAR PAR 32EDIP

Deep-Dive with AI

DocumentsDatasheet Tips for Writing Bulletproof Real-Time Clock Control Code

Specifications Pricing Series Description Documents

Technical Specifications

Parameters and characteristics for this part

Specification	DS1556-70IND+

Current - Timekeeping (Max)	6 mA
Features	NVSRAM, Alarm, Y2K, Watchdog Timer, Leap Year
Interface	Parallel
Memory Size	1 Mbit
Mounting Type	Through Hole
Operating Temperature [Max]	85 °C
Operating Temperature [Min]	-40 °C
Package / Case	0.6 in
Package / Case	15.24 mm
Package / Case	32-DIP Module
Supplier Device Package	32-EDIP
Time Format	HH:MM:SS (24 hr)
Type	Clock/Calendar
Voltage - Supply [Max]	5.5 V
Voltage - Supply [Min]	4.5 V

DS1556 Series

Part	Memory Size	Current - Timekeeping (Max)	Supplier Device Package	Type	Package / Case	Package / Case	Package / Case	Features	Operating Temperature [Max]	Operating Temperature [Min]	Time Format	Interface	Mounting Type	Voltage - Supply [Min]	Voltage - Supply [Max]	Voltage - Supply, Battery
Analog Devices Inc./Maxim Integrated DS1556W-120	1 Mbit	4 mA	32-EDIP	Clock/Calendar	0.6 in	15.24 mm	32-DIP Module	Alarm Leap Year NVSRAM Watchdog Timer Y2K	70 °C	0 °C	HH:MM:SS (24 hr)	Parallel	Through Hole	2.97 V	3.63 V
Analog Devices Inc./Maxim Integrated DS1556WP-120	1 Mbit	4 mA	34-PowerCap Module	Clock/Calendar			34-PowerCap™ Module	Alarm Leap Year NVSRAM Watchdog Timer Y2K	70 °C	0 °C	HH:MM:SS (24 hr)	Parallel	Surface Mount	2.97 V	3.63 V	3 V
Analog Devices Inc./Maxim Integrated DS1556WP-120IND	1 Mbit	4 mA	34-PowerCap Module	Clock/Calendar			34-PowerCap™ Module	Alarm Leap Year NVSRAM Watchdog Timer Y2K	85 °C	-40 °C	HH:MM:SS (24 hr)	Parallel	Surface Mount	2.97 V	3.63 V	3 V
Analog Devices Inc./Maxim Integrated DS1556P-70+	1 Mbit	6 mA	34-PowerCap Module	Clock/Calendar			34-PowerCap™ Module	Alarm Leap Year NVSRAM Watchdog Timer Y2K	70 °C	0 °C	HH:MM:SS (24 hr)	Parallel	Surface Mount	4.5 V	5.5 V	3 V
Analog Devices Inc./Maxim Integrated DS1556-70	1 Mbit	6 mA	32-EDIP	Clock/Calendar	0.6 in	15.24 mm	32-DIP Module	Alarm Leap Year NVSRAM Watchdog Timer Y2K	70 °C	0 °C	HH:MM:SS (24 hr)	Parallel	Through Hole	4.5 V	5.5 V
Analog Devices Inc./Maxim Integrated DS1556W-120IND	1 Mbit	4 mA	32-EDIP	Clock/Calendar	0.6 in	15.24 mm	32-DIP Module	Alarm Leap Year NVSRAM Watchdog Timer Y2K	85 °C	-40 °C	HH:MM:SS (24 hr)	Parallel	Through Hole	2.97 V	3.63 V
Analog Devices Inc./Maxim Integrated DS1556W-120IND+	1 Mbit	4 mA	32-EDIP	Clock/Calendar	0.6 in	15.24 mm	32-DIP Module	Alarm Leap Year NVSRAM Watchdog Timer Y2K	85 °C	-40 °C	HH:MM:SS (24 hr)	Parallel	Through Hole	2.97 V	3.63 V
Analog Devices Inc./Maxim Integrated DS1556P-70	1 Mbit	6 mA	34-PowerCap Module	Clock/Calendar			34-PowerCap™ Module	Alarm Leap Year NVSRAM Watchdog Timer Y2K	70 °C	0 °C	HH:MM:SS (24 hr)	Parallel	Surface Mount	4.5 V	5.5 V	3 V
Analog Devices Inc./Maxim Integrated DS1556-70+	1 Mbit	6 mA	32-EDIP	Clock/Calendar	0.6 in	15.24 mm	32-DIP Module	Alarm Leap Year NVSRAM Watchdog Timer Y2K	70 °C	0 °C	HH:MM:SS (24 hr)	Parallel	Through Hole	4.5 V	5.5 V
Analog Devices Inc./Maxim Integrated DS1556-70IND+	1 Mbit	6 mA	32-EDIP	Clock/Calendar	0.6 in	15.24 mm	32-DIP Module	Alarm Leap Year NVSRAM Watchdog Timer Y2K	85 °C	-40 °C	HH:MM:SS (24 hr)	Parallel	Through Hole	4.5 V	5.5 V

Pricing

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

Distributor	Package	Quantity	$

Digikey	Tube	1	$ 55.91
		10	$ 43.43
		25	$ 40.24
		100	$ 37.24

Description

General part information

DS1556 Series

Real Time Clock (RTC) IC Clock/Calendar 128KB Parallel 32-DIP Module (0.600", 15.24mm)

Documents

Technical documentation and resources