Clock/Timing - Real Time Clocks - Integrated Circuits (ICs) - PCF85063TP/1Z PCF8563T/5,518 PCF85263ATL/AX PCF85263ATT/AJ - CHIPSIC

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
PCF85063TP/1Z	NXP USA Inc.	IC RTC CLOCK/CALENDAR I2C 8-SON	Active	Clock/Calendar	Alarm, Leap Year, Square Wave Output	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	0.9 V ~ 5.5 V	-	0.6µA @ 3.3V	-40°C ~ 85°C	Surface Mount	8-WFDFN Exposed Pad	8-HWSON (2x3)
PCF8563T/5,518	NXP USA Inc.	IC RTC CLOCK/CALENDAR I2C 8-SOIC	Active	Clock/Calendar	Alarm, Leap Year, Watchdog Timer	-	HH:MM:SS (24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	1.8 V ~ 5.5 V	-	0.6µA ~ 0.75µA @ 2V ~ 5V	-40°C ~ 85°C	Surface Mount	8-SOIC (0.154", 3.90mm Width)	8-SO
PCF85263ATL/AX	NXP USA Inc.	IC RTC CLOCK/CALENDAR I2C 10DFN	Active	Clock/Calendar	Alarm, Leap Year, Watchdog Timer	-	HH:MM:SS:hh (12/24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	0.9 V ~ 5.5 V	0.9 V ~ 5.5 V	0.885µA @ 3.3V	-40°C ~ 85°C	Surface Mount	10-XFDFN Exposed Pad	10-DFN (2.6x2.6)
PCF85263ATT/AJ	NXP USA Inc.	IC RTC CLOCK/CALENDAR I2C 8TSSOP	Active	Clock/Calendar	Alarm, Leap Year, Watchdog Timer	-	HH:MM:SS:hh (12/24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	0.9 V ~ 5.5 V	0.9 V ~ 5.5 V	0.885µA @ 3.3V	-40°C ~ 85°C	Surface Mount	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)	8-TSSOP
PCF85363ATL/AX	NXP USA Inc.	IC RTC CLOCK/CALENDAR I2C 10DFN	Active	Clock/Calendar	Alarm, Leap Year, Watchdog Timer	64B	HH:MM:SS:hh (12/24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	0.9 V ~ 5.5 V	0.9 V ~ 5.5 V	0.885µA @ 3.3V	-40°C ~ 85°C	Surface Mount	10-XFDFN Exposed Pad	10-DFN (2.6x2.6)
PCF2123TS/1,118	NXP USA Inc.	IC RTC CLOCK/CALENDAR SPI 14-TSSOP	Active	Clock/Calendar	Alarm, Leap Year, Square Wave Output, Watchdog Timer	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	SPI	1.6 V ~ 5.5 V	-	0.33µA ~ 0.38µA @ 2V ~ 5V	-40°C ~ 85°C	Surface Mount	14-TSSOP (0.173", 4.40mm Width)	14-TSSOP
PCF2123TS/1,112	NXP USA Inc.	IC RTC CLOCK/CALENDAR SPI 14-TSSOP	Active	Clock/Calendar	Alarm, Leap Year, Square Wave Output, Watchdog Timer	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	SPI	1.6 V ~ 5.5 V	-	0.33µA ~ 0.38µA @ 2V ~ 5V	-40°C ~ 85°C	Surface Mount	14-TSSOP (0.173", 4.40mm Width)	14-TSSOP
PCF8523TK/1,118	NXP USA Inc.	IC RTC CLOCK/CALENDAR I2C 8-HVSON	Active	Clock/Calendar	Alarm, Leap Year, Watchdog Timer	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	1.6 V ~ 5.5 V	1.8 V ~ 5.5 V	0.5µA @ 2V ~ 5V	-40°C ~ 85°C	Surface Mount	8-VDFN Exposed Pad	8-HVSON (4x4)
PCF8523T/1,118	NXP USA Inc.	IC RTC CLOCK/CALENDAR I2C 8-SOIC	Active	Clock/Calendar	Alarm, Leap Year, Watchdog Timer	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	1.6 V ~ 5.5 V	1.8 V ~ 5.5 V	0.5µA @ 2V ~ 5V	-40°C ~ 85°C	Surface Mount	8-SOIC (0.154", 3.90mm Width)	8-SO
PCF8563T/F4,118	NXP USA Inc.	IC RTC CLOCK/CALENDAR I2C 8-SOIC	Active	Clock/Calendar	Alarm, Leap Year, Watchdog Timer	-	HH:MM:SS (24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	1.8 V ~ 5.5 V	-	0.6µA ~ 0.75µA @ 2V ~ 5V	-40°C ~ 85°C	Surface Mount	8-SOIC (0.154", 3.90mm Width)	8-SO
MCP7940MT-I/MNY	Microchip Technology	IC RTC CLOCK/CALENDAR I2C 8-TDFN	Active	Clock/Calendar	Alarm, Leap Year, Square Wave Output, SRAM	64B	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	1.8 V ~ 5.5 V	-	1µA @ 5.5V	-40°C ~ 85°C	Surface Mount	8-WFDFN Exposed Pad	8-TDFN (2x3)
MCP7940M-I/SN	Microchip Technology	IC RTC CLOCK/CALENDAR I2C 8-SOIC	Active	Clock/Calendar	Alarm, Leap Year, Square Wave Output, SRAM	64B	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	1.8 V ~ 5.5 V	-	1µA @ 5.5V	-40°C ~ 85°C	Surface Mount	8-SOIC (0.154", 3.90mm Width)	8-SOIC
PCF8563TS/4,118	NXP USA Inc.	IC RTC CLOCK/CALENDAR I2C 8-TSSOP	Active	Clock/Calendar	Alarm, Leap Year, Watchdog Timer	-	HH:MM:SS (24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	1.8 V ~ 5.5 V	-	0.6µA ~ 0.75µA @ 2V ~ 5V	-40°C ~ 85°C	Surface Mount	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)	8-TSSOP
MCP7940NT-I/MS	Microchip Technology	IC RTC CLOCK/CALENDAR I2C 8-MSOP	Active	Clock/Calendar	Alarm, Leap Year, Square Wave Output, SRAM	64B	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	1.8 V ~ 5.5 V	1.3 V ~ 5.5 V	1.2µA @ 3.3V	-40°C ~ 85°C	Surface Mount	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)	8-MSOP
PCA8565TS/1,118	NXP USA Inc.	IC RTC CLOCK/CALENDAR I2C 8-TSSOP	Active	Clock/Calendar	Alarm, Leap Year, Square Wave Output, Watchdog Timer	-	HH:MM:SS (24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	1.8 V ~ 5.5 V	-	1.2µA ~ 5µA @ 2V ~ 5V	-40°C ~ 125°C	Surface Mount	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)	8-TSSOP
PCA21125T/Q900/1,1	NXP USA Inc.	IC RTC CLOCK/CALENDAR SPI 14-TSSOP	Active	Clock/Calendar	Alarm, Leap Year, Square Wave Output, Watchdog Timer	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	SPI	1.6 V ~ 5.5 V	-	30.3µA @ 2V ~ 5V	-40°C ~ 125°C	Surface Mount	14-TSSOP (0.173", 4.40mm Width)	14-TSSOP
MCP7940N-E/SN	Microchip Technology	IC RTC CLOCK/CALENDAR I2C 8-SOIC	Active	Clock/Calendar	Alarm, Leap Year, Square Wave Output, SRAM	64B	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	1.8 V ~ 5.5 V	1.3 V ~ 5.5 V	1.2µA @ 3.3V	-40°C ~ 125°C	Surface Mount	8-SOIC (0.154", 3.90mm Width)	8-SOIC
AB1815-T3	Abracon LLC	IC RTC CLOCK/CALENDAR SPI 16-QFN	Active	Clock/Calendar	Alarm, Leap Year, SRAM, Trickle-Charger, Watchdog Timer	256B	HH:MM:SS:hh	YY-MM-DD-dd	SPI	1.7 V ~ 3.6 V	1.5 V ~ 3.6 V	0.17µA ~ 0.22µA @ 1.8V ~ 3V	-40°C ~ 85°C	Surface Mount	16-VFQFN Exposed Pad	16-QFN (3x3)
MCP79400-I/SN	Microchip Technology	IC RTC CLOCK/CALENDAR I2C 8-SOIC	Active	Clock/Calendar	Alarm, Leap Year, Square Wave Output, SRAM, Unique ID	64B	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	1.8 V ~ 5.5 V	1.3 V ~ 5.5 V	1.2µA (Typ) @ 3.3V	-40°C ~ 85°C	Surface Mount	8-SOIC (0.154", 3.90mm Width)	8-SOIC
MCP79410-I/MS	Microchip Technology	IC RTC CLOCK/CALENDAR I2C 8-MSOP	Active	Clock/Calendar	Alarm, Leap Year, Square Wave Output, SRAM, Unique ID	64B, 1Kb	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	1.8 V ~ 5.5 V	1.3 V ~ 5.5 V	1.2µA @ 3.3V	-40°C ~ 85°C	Surface Mount	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)	8-MSOP
MCP79520-I/MS	Microchip Technology	IC RTC CLOCK/CALENDAR SPI 10-MSOP	Active	Clock/Calendar	Alarm, EEPROM, Leap Year, Square Wave Output, SRAM, Unique ID	64B	HH:MM:SS:hh (12/24 hr)	YY-MM-DD-dd	SPI	1.8 V ~ 3.6 V	1.3 V ~ 3.6 V	1µA @ 1.8V ~ 3.6V	-40°C ~ 85°C	Surface Mount	10-TFSOP, 10-MSOP (0.118", 3.00mm Width)	10-MSOP
PCF8593T/1,118	NXP USA Inc.	IC RTC CLOCK/CALENDAR I2C 8-SOIC	Active	Clock/Calendar	Alarm, NVSRAM	8B	HH:MM:SS:hh (12/24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	2.5 V ~ 6 V	-	8µA ~ 15µA @ 2V ~ 5V	-40°C ~ 85°C	Surface Mount	8-SOIC (0.154", 3.90mm Width)	8-SO
DS1371U+T&R	Maxim Integrated	IC RTC BINARY CNT I2C 8-USOP	Active	Binary Counter	Alarm, Square Wave Output, Watchdog Timer	-	Binary	Binary	I²C, 2-Wire Serial	1.7 V ~ 5.5 V	-	1.3µA @ 1.7V ~ 5.5V	-40°C ~ 85°C	Surface Mount	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)	8-uMAX
PCF8583T/5,518	NXP USA Inc.	IC RTC CLOCK/CALENDAR I2C 8-SOIC	Active	Clock/Calendar	Alarm, NVSRAM, Square Wave Output	240B	HH:MM:SS:hh (12/24 hr)	YY-MM-DD	I²C, 2-Wire Serial	2.5 V ~ 6 V	-	10µA ~ 50µA @ 1V ~ 5V	-40°C ~ 85°C	Surface Mount	8-SOIC (0.295", 7.50mm Width)	8-SO
PCF8583T/5,512	NXP USA Inc.	IC RTC CLOCK/CALENDAR I2C 8-SOIC	Obsolete	Clock/Calendar	Alarm, NVSRAM, Square Wave Output	240B	HH:MM:SS:hh (12/24 hr)	YY-MM-DD	I²C, 2-Wire Serial	2.5 V ~ 6 V	-	10µA ~ 50µA @ 1V ~ 5V	-40°C ~ 85°C	Surface Mount	8-SOIC (0.295", 7.50mm Width)	8-SO
PCF2129AT/2,518	NXP USA Inc.	IC RTC CLOCK/CAL I2C/SPI 20-SOIC	Active	Clock/Calendar	Alarm, Leap Year, Square Wave Output, TCXO/Crystal, Watchdog Timer	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	1.8 V ~ 4.2 V	1.8 V ~ 4.2 V	1.5µA @ 3.3V	-40°C ~ 85°C	Surface Mount	20-SOIC (0.295", 7.50mm Width)	20-SO
M41T93SQA6F	STMicroelectronics	IC RTC CLOCK/CALENDAR SPI 16-QFN	Active	Clock/Calendar	Alarm, Leap Year, Square Wave Output, SRAM, Watchdog Timer	7B	HH:MM:SS:hh (24 hr)	YY-MM-DD-dd	SPI	3 V ~ 5.5 V	1.8 V ~ 5.5 V	10µA @ 5.5V	-40°C ~ 85°C	Surface Mount	16-VQFN Exposed Pad	16-QFN (4x4)
M41T83RQA6F	STMicroelectronics	IC RTC CLOCK/CAL I2C 16-VFQFPN	Active	Clock/Calendar	Alarm, Leap Year, Square Wave Output, SRAM, Watchdog Timer	7B	HH:MM:SS:hh (24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	2.7 V ~ 5.5 V	2 V ~ 5.5 V	10µA @ 5.5V	-40°C ~ 85°C	Surface Mount	16-VQFN Exposed Pad	16-QFN (4x4)
DS1302SN+T&R	Maxim Integrated	IC RTC CLOCK/CALENDAR SER 8-SOIC	Active	Clock/Calendar	Leap Year, NVSRAM, Trickle-Charger	31B	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	3-Wire Serial	2 V ~ 5.5 V	2 V ~ 5.5 V	0.3µA ~ 1µA @ 2V ~ 5V	-40°C ~ 85°C	Surface Mount	8-SOIC (0.209", 5.30mm Width)	8-SO
PCF2129T/2,518	NXP USA Inc.	IC RTC CLOCK/CAL I2C/SPI 16-SOIC	Active	Clock/Calendar	Alarm, Leap Year, Square Wave Output, TCXO/Crystal, Watchdog Timer	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	1.8 V ~ 4.2 V	1.8 V ~ 4.2 V	1.5µA @ 3.3V	-40°C ~ 85°C	Surface Mount	16-SOIC (0.295", 7.50mm Width)	16-SO
PCF2127AT/2Y	NXP USA Inc.	IC RTC CLOCK/CAL I2C/SPI 20-SOIC	Active	Clock/Calendar	Alarm, Leap Year, Square Wave Output, SRAM, TCXO/Crystal, Watchdog Timer	512B	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	1.8 V ~ 4.2 V	1.8 V ~ 4.2 V	1.5µA @ 3.3V	-40°C ~ 85°C	Surface Mount	20-SOIC (0.295", 7.50mm Width)	20-SO
RX8900SA:UA3 PURE SN	EPSON	IC RTC CLOCK/CALENDAR I2C 14-SOP	Active	Clock/Calendar	Alarm	-	HH:MM:SS (24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	2.5 V ~ 5.5 V	1.6 V ~ 5.5 V	1.35µA ~ 1.45µA @ 3V ~ 5V	-40°C ~ 85°C	Surface Mount	14-SOIC (0.209", 5.30mm Width)	14-SOIC
PCF2127T/2Y	NXP USA Inc.	IC RTC CLOCK/CAL I2C/SPI 16-SOIC	Active	Clock/Calendar	Alarm, Leap Year, Square Wave Output, SRAM, TCXO/Crystal, Watchdog Timer	512B	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	1.8 V ~ 4.2 V	1.8 V ~ 4.2 V	1.5µA @ 3.3V	-40°C ~ 85°C	Surface Mount	16-SOIC (0.295", 7.50mm Width)	16-SO
RX-8035SA:B3 PURE SN	EPSON	IC RTC EVENT REC I2C 14-SOP	Active	Time Event Recorder	Alarm	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	2.4 V ~ 5.5 V	1 V ~ 5.5 V	2.5µA @ 3V	-40°C ~ 85°C	Surface Mount	14-SOIC, Non-Standard	14-SOP
RX-8571LC:B3 PURE SN	EPSON	IC RTC CLOCK/CALENDAR I2C 12-VSOJ	Active	Clock/Calendar	Alarm, Leap Year, RAM	16B	HH:MM:SS (24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	1.6 V ~ 5.5 V	-	0.55µA ~ 0.6µA @ 3V ~ 5V	-40°C ~ 85°C	Surface Mount	12-TFSOJ (0.094", 2.40mm Width)	12-VSOJ
ISL1208IB8Z	Renesas Electronics America Inc.	IC RTC CLOCK/CALENDAR I2C 8-SOIC	Active	Clock/Calendar	Alarm, Leap Year, SRAM	2B	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	2.7 V ~ 5.5 V	1.8 V ~ 5.5 V	4µA ~ 6µA @ 3V ~ 5V	-40°C ~ 85°C	Surface Mount	8-SOIC (0.154", 3.90mm Width)	8-SOIC
RTC-4574SA:B3 ROHS	EPSON	IC RTC CLOCK/CALENDAR SER 14-SOP	Active	Clock/Calendar	Alarm, Leap Year	-	HH:MM:SS (24 hr)	YY-MM-DD-dd	3-Wire Serial	1.6 V ~ 5.5 V	-	1µA ~ 2µA @ 3V ~ 5V	-40°C ~ 85°C	Surface Mount	14-SOIC (0.209", 5.30mm Width)	14-SOP
DS1372U+	Maxim Integrated	IC RTC BINARY CNT I2C 8-USOP	Active	Binary Counter	Alarm, Square Wave Output, Watchdog Timer	-	Binary	Binary	I²C, 2-Wire Serial	2.4 V ~ 5.5 V	-	0.8µA @ 2.4V ~ 5.5V	-40°C ~ 85°C	Surface Mount	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)	8-uMAX
DS1672U-33+	Maxim Integrated	IC RTC BINARY CNT I2C 8-USOP	Active	Binary Counter	Trickle-Charger	-	Binary	Binary	I²C, 2-Wire Serial	2.97 V ~ 3.63 V	1.3 V ~ 3.63 V	500µA @ 3.63V	-40°C ~ 85°C	Surface Mount	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)	8-uMAX
RX-8564LC:B0 PURE SN	EPSON	IC RTC CLOCK/CALENDAR I2C 12-VSOJ	Active	Clock/Calendar	Alarm, Leap Year	-	HH:MM:SS (24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	1.8 V ~ 5.5 V	-	0.65µA ~ 0.8µA @ 2V ~ 5V	-40°C ~ 85°C	Surface Mount	12-TFSOJ (0.094", 2.40mm Width)	12-VSOJ
DS1337+	Maxim Integrated	IC RTC CLOCK/CALENDAR I2C 8-DIP	Active	Clock/Calendar	Alarm, Leap Year, Square Wave Output	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	1.8 V ~ 5.5 V	-	0.6µA @ 1.3V ~ 1.8V	-40°C ~ 85°C	Through Hole	8-DIP (0.300", 7.62mm)	8-PDIP
ISL1208IU8Z	Renesas Electronics America Inc.	IC RTC CLOCK/CALENDAR I2C 8-MSOP	Active	Clock/Calendar	Alarm, Leap Year, SRAM	2B	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	2.7 V ~ 5.5 V	1.8 V ~ 5.5 V	4µA ~ 6µA @ 3V ~ 5V	-40°C ~ 85°C	Surface Mount	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)	8-MSOP
DS1672S-33+	Maxim Integrated	IC RTC BINARY CNT I2C 8-SOIC	Active	Binary Counter	Trickle-Charger	-	Binary	Binary	I²C, 2-Wire Serial	2.97 V ~ 3.63 V	1.3 V ~ 3.63 V	500µA @ 3.63V	-40°C ~ 85°C	Surface Mount	8-SOIC (0.154", 3.90mm Width)	8-SOIC
RX-8025NB:AA3 PURE SN	EPSON	IC RTC CLOCK/CALENDAR I2C 22-SON	Active	Clock/Calendar	Alarm, Leap Year	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	1.7 V ~ 5.5 V	-	1.2µA ~ 1.8µA @ 3V ~ 5V	-40°C ~ 85°C	Surface Mount	22-LFDFN	22-SON (5x6)
AB-RTCMC-32.768KHZ-B5ZE-S3-T	Abracon LLC	IC RTC CLOCK/CALENDAR I2C MODULE	Active	Clock/Calendar	Alarm, Leap Year, Square Wave Output	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	1.2 V ~ 5.5 V	1.8 V ~ 5.5 V	0.5µA @ 2V ~ 5V	-40°C ~ 85°C	Surface Mount	10-SMD Module	Module
RX-4581NB:B3 ROHS	EPSON	IC RTC CLOCK/CALENDAR SPI 22-SON	Active	Clock/Calendar	Alarm, Leap Year, SRAM	16B	HH:MM:SS (24 hr)	YY-MM-DD-dd	SPI	1.6 V ~ 5.5 V	-	0.8µA ~ 1.2µA @ 3V ~ 5V	-40°C ~ 85°C	Surface Mount	22-SMD, 20 Leads, Flat Leads	22-SON
RX-4574LC:B3 PURE SN	EPSON	IC RTC CLOCK/CALENDAR SER 12-VSOJ	Active	Clock/Calendar	Alarm, Leap Year	-	HH:MM:SS (24 hr)	YY-MM-DD-dd	3-Wire Serial	1.6 V ~ 5.5 V	-	0.7µA ~ 0.9µA @ 3V ~ 5V	-40°C ~ 85°C	Surface Mount	12-TFSOJ (0.094", 2.40mm Width)	12-VSOJ
DS1338U-18+	Maxim Integrated	IC RTC CLOCK/CALENDAR I2C 8-USOP	Active	Clock/Calendar	Leap Year, NVSRAM, Square Wave Output	56B	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	1.71 V ~ 5.5 V	1.3 V ~ 3.7 V	100µA @ 1.89V	-40°C ~ 85°C	Surface Mount	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)	8-uMAX
DS1340U-33+	Maxim Integrated	IC RTC CLOCK/CALENDAR I2C 8-USOP	Active	Clock/Calendar	Leap Year, Trickle-Charger	-	HH:MM:SS (24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	2.97 V ~ 5.5 V	1.3 V ~ 5.5 V	150µA @ 5.5V	-40°C ~ 85°C	Surface Mount	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)	8-uMAX
DS1394U-33+	Maxim Integrated	IC RTC CLOCK/CALENDAR SPI 10-MSOP	Active	Clock/Calendar	Alarm, Leap Year, Square Wave Output, Trickle-Charger	-	HH:MM:SS:hh (12/24 hr)	YY-MM-DD-dd	SPI	2.97 V ~ 5.5 V	1.3 V ~ 5.5 V	175µA @ 2.97V ~ 5.5V	-40°C ~ 85°C	Surface Mount	10-TFSOP, 10-MSOP (0.118", 3.00mm Width)	10-uMAX

Manufacturers for Clock/Timing - Real Time Clocks