Specification	DS1673S-5+

Current - Timekeeping (Max) [Max]	300 µA
Date Format	YY-MM-DD-dd
Features	Watchdog Timer, Alarm, Leap Year
Interface	3-wire Serial
Mounting Type	Surface Mount
Operating Temperature [Max]	70 °C
Operating Temperature [Min]	0 °C
Package / Case	20-SOIC (0.295", 7.50mm Width)
Supplier Device Package	20-SOIC
Time Format	HH:MM:SS (12/24 hr)
Type	Portable System Controller
Voltage - Supply [Max]	5.5 V
Voltage - Supply [Min]	4.5 V
Voltage - Supply, Battery [Max]	3.7 V
Voltage - Supply, Battery [Min]	2.5 V

DS1673 Series

Portable System Controller

Part	Time Format	Supplier Device Package	Features	Operating Temperature [Max]	Interface	Voltage - Supply, Battery [Max]	Voltage - Supply, Battery [Min]	Type	Voltage - Supply [Max]	Voltage - Supply [Min]	Date Format	Current - Timekeeping (Max) [Max]	Mounting Type	Package / Case	Package / Case [y]	Package / Case [x]	Current - Timekeeping (Max)
Analog Devices Inc./Maxim Integrated DS1673S-5+	HH:MM:SS (12/24 hr)	20-SOIC	Alarm Leap Year Watchdog Timer	70 °C	3-wire Serial	3.7 V	2.5 V	Portable System Controller	5.5 V	4.5 V	YY-MM-DD-dd	300 µA	Surface Mount	20-SOIC (0.295" 7.50mm Width)
Analog Devices Inc./Maxim Integrated DS1673E-5+	HH:MM:SS (12/24 hr)	20-TSSOP	Alarm Leap Year Watchdog Timer	70 °C	3-wire Serial	3.7 V	2.5 V	Portable System Controller	5.5 V	4.5 V	YY-MM-DD-dd	300 µA	Surface Mount	20-TSSOP	4.4 mm	0.173 "
Analog Devices Inc./Maxim Integrated DS1673E-3	HH:MM:SS (12/24 hr)	20-TSSOP	Alarm Leap Year Watchdog Timer	70 °C	3-wire Serial	3.7 V	2.5 V	Portable System Controller	3.3 V	2.7 V	YY-MM-DD-dd		Surface Mount	20-TSSOP	4.4 mm	0.173 "	100 µA
Analog Devices Inc./Maxim Integrated DS1673S-3+	HH:MM:SS (12/24 hr)	20-SOIC	Alarm Leap Year Watchdog Timer	70 °C	3-wire Serial	3.7 V	2.5 V	Portable System Controller	3.3 V	2.7 V	YY-MM-DD-dd		Surface Mount	20-SOIC (0.295" 7.50mm Width)			100 µA
Analog Devices Inc./Maxim Integrated DS1673S-3	HH:MM:SS (12/24 hr)	20-SOIC	Alarm Leap Year Watchdog Timer	70 °C	3-wire Serial	3.7 V	2.5 V	Portable System Controller	3.3 V	2.7 V	YY-MM-DD-dd		Surface Mount	20-SOIC (0.295" 7.50mm Width)			100 µA
Analog Devices Inc./Maxim Integrated DS1673E-3/T&R	HH:MM:SS (12/24 hr)	20-TSSOP	Alarm Leap Year Watchdog Timer	70 °C	3-wire Serial	3.7 V	2.5 V	Portable System Controller	3.3 V	2.7 V	YY-MM-DD-dd		Surface Mount	20-TSSOP	4.4 mm	0.173 "	100 µA
Analog Devices Inc./Maxim Integrated DS1673S-5+T&R	HH:MM:SS (12/24 hr)	20-SOIC	Alarm Leap Year Watchdog Timer	70 °C	3-wire Serial	3.7 V	2.5 V	Portable System Controller	5.5 V	4.5 V	YY-MM-DD-dd	300 µA	Surface Mount	20-SOIC (0.295" 7.50mm Width)
Analog Devices Inc./Maxim Integrated DS1673E-3+	HH:MM:SS (12/24 hr)	20-TSSOP	Alarm Leap Year Watchdog Timer	70 °C	3-wire Serial	3.7 V	2.5 V	Portable System Controller	3.3 V	2.7 V	YY-MM-DD-dd		Surface Mount	20-TSSOP	4.4 mm	0.173 "	100 µA
Analog Devices Inc./Maxim Integrated DS1673E-5/T&R	HH:MM:SS (12/24 hr)	20-TSSOP	Alarm Leap Year Watchdog Timer	70 °C	3-wire Serial	3.7 V	2.5 V	Portable System Controller	5.5 V	4.5 V	YY-MM-DD-dd	300 µA	Surface Mount	20-TSSOP	4.4 mm	0.173 "
Analog Devices Inc./Maxim Integrated DS1673E-5+T&R	HH:MM:SS (12/24 hr)	20-TSSOP	Alarm Leap Year Watchdog Timer	70 °C	3-wire Serial	3.7 V	2.5 V	Portable System Controller	5.5 V	4.5 V	YY-MM-DD-dd	300 µA	Surface Mount	20-TSSOP	4.4 mm	0.173 "

Pricing

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

Distributor	Package	Quantity	$	Updated

Description

General part information

DS1673 Series

The DS1673 portable system controller is a circuit that incorporates many of the functions necessary for low-power portable products integrated into one chip. The device provides a real-time clock (RTC), NV RAM controller, microprocessor monitor, and a 3-channel, 8-bit analog-to-digital converter (ADC). Communication with the DS1673 is established through a simple 3-wire interface.The RTC provides seconds, minutes, hours, day, date, month, and year information with leap year compensation. The RTC also provides an alarm interrupt. This interrupt works when the DS1673 is powered by the system power supply or when in battery-backup operation, so the alarm can be used to wake up a system that is powered down.Automatic backup and write protection of an external SRAM is provided through the VCCO, active-low CEOL, and active-low CEOH pins. The backup energy source used to power the RTC is also used to retain RAM data in the absence of VCCthrough the VCCOpin. The chip-enable outputs to RAM (active-low CEOL and active-low CEOH) are controlled during power transients to prevent data corruption.