Memory Size is 512B - Clock/Timing - Real Time Clocks Distributor - DS1388Z-33+ DS1388Z-33+T&R DS2404B

Part Number	Manufacturer / Brand	Brife Description	Part Status	Type	Features	Memory Size	Time Format	Date Format	Interface	Voltage - Supply	Voltage - Supply, Battery	Current - Timekeeping (Max)	Operating Temperature	Mounting Type	Package / Case	Supplier Device Package
DS1388Z-33+	Maxim Integrated	IC RTC CLOCK/CALENDAR I2C 8-SOIC	Active	Clock/Calendar	EEPROM, Leap Year, Supervisor, Trickle-Charger, Watchdog Timer	512B	HH:MM:SS:hh (12/24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	2.97 V ~ 3.63 V	1.3 V ~ 5.5 V	150µA @ 2.97V ~ 3.63V	-40°C ~ 85°C	Surface Mount	8-SOIC (0.154", 3.90mm Width)	8-SOIC
DS1388Z-33+T&R	Maxim Integrated	IC RTC CLOCK/CALENDAR I2C 8-SOIC	Active	Clock/Calendar	EEPROM, Leap Year, Supervisor, Trickle-Charger, Watchdog Timer	512B	HH:MM:SS:hh (12/24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	2.97 V ~ 3.63 V	1.3 V ~ 5.5 V	150µA @ 2.97V ~ 3.63V	-40°C ~ 85°C	Surface Mount	8-SOIC (0.154", 3.90mm Width)	8-SOIC
DS2404B	Maxim Integrated	IC RTC BINARY CNT SER 16-SSOP	Obsolete	Binary Counter	Alarm, Square Wave Output, SRAM	512B	Binary	Binary	1-Wire® and 3-Wire	2.8 V ~ 5.5 V	2.8 V ~ 5.5 V	500µA @ 5V	-40°C ~ 85°C	Surface Mount	16-SSOP (0.209", 5.30mm Width)	16-SSOP