Page 48 - Clock/Timing - Real Time Clocks | Integrated Circuits (ICs)

DS1374U-33
Maxim Integrated

IC RTC BINARY CNT I2C 10-USOP

Package: 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)

Stock4,880
MCP795B20-I/SL
Microchip Technology

IC RTC CLK/CALENDAR SPI 14-SOIC

Package: 14-SOIC (0.154", 3.90mm Width)

Stock6,016
AB0813-T3
Abracon LLC

IC RTC CLK/CALENDAR SPI 16-QFN

Package: 16-VFQFN Exposed Pad

Stock5,888
DS1347T+
Maxim Integrated

IC RTC CLK/CALENDAR SPI 8-TDFN

Package: 8-WDFN Exposed Pad

Stock7,008
ISL12028AIB27Z
Intersil

IC RTC CLK/CALENDAR I2C 14-SOIC

Package: 14-SOIC (0.154", 3.90mm Width)

Stock5,088
ISL1208IB8Z-TKR5291
Intersil

IC RTC CLK/CALENDAR I2C 8-SOIC

Package: 8-SOIC (0.154", 3.90mm Width)

Stock4,400
DS32B35-33IND#
Maxim Integrated

IC RTC CLK/CALENDAR I2C 20-SOIC

Package: 20-SOIC (0.295", 7.50mm Width)

Stock3,312
X1228S14-2.7T1
Intersil

IC RTC CLK/CALENDAR I2C 14-SOIC

Package: 14-SOIC (0.154", 3.90mm Width)

Stock2,928
DS1602S+
Maxim Integrated

IC RTC ELAPSED CNT SER 8-SOIC

Package: 8-SOIC (0.209", 5.30mm Width)

Stock3,616
DS1284Q+
Maxim Integrated

IC RTC CLK/CALENDAR PAR 28-PLCC

Package: 28-LCC (J-Lead)

Stock7,968
M41T256YMH7F
STMicroelectronics

IC RTC CLK/CALENDAR I2C 44-SOH

Package: 44-BSOP (0.337", 8.56mm Width) requires SNAPHAT

Stock7,632
DS1340U-3
Maxim Integrated

IC RTC CLK/CALENDAR I2C 8-USOP

Package: 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)

Stock6,624
M48T35AV-10MH6E
STMicroelectronics

IC RTC CLK/CALENDAR PAR 28SOH

Package: 28-SOP (0.350", 8.89mm Width) with SNAPHAT Sockets

Stock2,256
DS1744P-70IND
Maxim Integrated

IC RTC CLK/CALENDAR PAR 34-PCM

Package: 34-PowerCap? Module

Stock7,424
X1227S8-4.5A
Intersil

IC RTC CLK/CALENDAR I2C 8-SOIC

Package: 8-SOIC (0.154", 3.90mm Width)

Stock6,832
DS3231MZ+TRL
Maxim Integrated

IC RTC CLK/CALENDAR I2C 8-SOIC

Package: 8-SOIC (0.154", 3.90mm Width)

Stock1,021,116
BQ3285ESTR
Texas Instruments

IC RTC CLK/CALENDAR PAR 24-SOIC

Package: 24-SOIC (0.295", 7.50mm Width)

Stock18,000
1339AC-31SRGI
IDT, Integrated Device Technology Inc

IC RTC CLK/CALENDAR I2C 16-SOIC

Package: 16-SOIC (0.295", 7.50mm Width)

Stock4,784
MCP79512T-I/MS
Microchip Technology

IC RTC CLK/CALENDAR SPI 10-MSOP

Package: 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)

Stock5,296
MCP7940NT-E/SN
Microchip Technology

IC RTC CLK/CALENDAR I2C 8-SOIC

Package: 8-SOIC (0.154", 3.90mm Width)

Stock7,856

Part Number	Manufacturer	Description	Package	Stock	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
DS1374U-33	Maxim Integrated	IC RTC BINARY CNT I2C 10-USOP Type: Binary Counter Features: Alarm, Square Wave Output, Trickle-Charger, Watchdog Timer Memory Size: - Time Format: Binary Date Format: Binary Interface: I2C, 2-Wire Serial Voltage - Supply: 2.97 V ~ 5.5 V Voltage - Supply, Battery: 1.3 V ~ 5.5 V Current - Timekeeping (Max): 175µA @ 2.97V ~ 5.5V Operating Temperature: -40°C ~ 85°C Mounting Type: Surface Mount Package / Case: 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) Supplier Device Package: 10-uMAX	Package: 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)	Stock4,880	Alarm, Square Wave Output, Trickle-Charger, Watchdog Timer	-	Binary	Binary	I2C, 2-Wire Serial	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
MCP795B20-I/SL	Microchip Technology	IC RTC CLK/CALENDAR SPI 14-SOIC Type: Clock/Calendar Features: Alarm, EEPROM, Leap Year, Square Wave Output, SRAM, Unique ID, Watchdog Timer Memory Size: 64B Time Format: HH:MM:SS:hh (12/24 hr) Date Format: YY-MM-DD-dd Interface: SPI Voltage - Supply: 1.8 V ~ 5.5 V Voltage - Supply, Battery: 1.3 V ~ 5.5 V Current - Timekeeping (Max): 1µA @ 1.8V ~ 5.5V Operating Temperature: -40°C ~ 85°C Mounting Type: Surface Mount Package / Case: 14-SOIC (0.154", 3.90mm Width) Supplier Device Package: 14-SOIC	Package: 14-SOIC (0.154", 3.90mm Width)	Stock6,016	Alarm, EEPROM, Leap Year, Square Wave Output, SRAM, Unique ID, Watchdog Timer	64B	HH:MM:SS:hh (12/24 hr)	YY-MM-DD-dd	SPI	1.8 V ~ 5.5 V	1.3 V ~ 5.5 V	1µA @ 1.8V ~ 5.5V	-40°C ~ 85°C	Surface Mount	14-SOIC (0.154", 3.90mm Width)	14-SOIC
AB0813-T3	Abracon LLC	IC RTC CLK/CALENDAR SPI 16-QFN Type: Clock/Calendar Features: Alarm, Leap Year, SRAM, Trickle-Charger Memory Size: 64B Time Format: HH:MM:SS:hh Date Format: YY-MM-DD-dd Interface: SPI Voltage - Supply: 1.7 V ~ 3.6 V Voltage - Supply, Battery: 1.5 V ~ 3.6 V Current - Timekeeping (Max): 0.17µA ~ 0.22µA @ 1.8V ~ 3V Operating Temperature: -40°C ~ 85°C Mounting Type: Surface Mount Package / Case: 16-VFQFN Exposed Pad Supplier Device Package: 16-QFN (3x3)	Package: 16-VFQFN Exposed Pad	Stock5,888	Alarm, Leap Year, SRAM, Trickle-Charger	64B	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)
DS1347T+	Maxim Integrated	IC RTC CLK/CALENDAR SPI 8-TDFN Type: Clock/Calendar Features: Alarm, Leap Year, SRAM Memory Size: - Time Format: HH:MM:SS (12/24 hr) Date Format: YY-MM-DD-dd Interface: SPI Voltage - Supply: 2 V ~ 5.5 V Voltage - Supply, Battery: - Current - Timekeeping (Max): 0.7µA ~ 0.8µA @ 2V ~ 5V Operating Temperature: -40°C ~ 85°C Mounting Type: Surface Mount Package / Case: 8-WDFN Exposed Pad Supplier Device Package: 8-TDFN (3x3)	Package: 8-WDFN Exposed Pad	Stock7,008	Alarm, Leap Year, SRAM	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	SPI	2 V ~ 5.5 V	-	0.7µA ~ 0.8µA @ 2V ~ 5V	-40°C ~ 85°C	Surface Mount	8-WDFN Exposed Pad	8-TDFN (3x3)
ISL12028AIB27Z	Intersil	IC RTC CLK/CALENDAR I2C 14-SOIC Type: Clock/Calendar Features: Alarm, Leap Year, Supervisor, Watchdog Timer Memory Size: - Time Format: HH:MM:SS (12/24 hr) Date Format: YY-MM-DD-dd Interface: I2C, 2-Wire Serial Voltage - Supply: 2.7 V ~ 5.5 V Voltage - Supply, Battery: 1.8 V ~ 5.5 V Current - Timekeeping (Max): 10µA ~ 20µA @ 2.7V ~ 5.5V Operating Temperature: -40°C ~ 85°C Mounting Type: Surface Mount Package / Case: 14-SOIC (0.154", 3.90mm Width) Supplier Device Package: 14-SOIC	Package: 14-SOIC (0.154", 3.90mm Width)	Stock5,088	Alarm, Leap Year, Supervisor, Watchdog Timer	-	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	10µA ~ 20µA @ 2.7V ~ 5.5V	-40°C ~ 85°C	Surface Mount	14-SOIC (0.154", 3.90mm Width)	14-SOIC
ISL1208IB8Z-TKR5291	Intersil	IC RTC CLK/CALENDAR I2C 8-SOIC Type: Clock/Calendar Features: Alarm, Leap Year, SRAM Memory Size: 2B Time Format: HH:MM:SS (12/24 hr) Date Format: YY-MM-DD-dd Interface: I2C, 2-Wire Serial Voltage - Supply: 2.7 V ~ 5.5 V Voltage - Supply, Battery: 1.8 V ~ 5.5 V Current - Timekeeping (Max): 4µA ~ 6µA @ 3V ~ 5V Operating Temperature: -40°C ~ 85°C Mounting Type: Surface Mount Package / Case: 8-SOIC (0.154", 3.90mm Width) Supplier Device Package: 8-SOIC	Package: 8-SOIC (0.154", 3.90mm Width)	Stock4,400	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
DS32B35-33IND#	Maxim Integrated	IC RTC CLK/CALENDAR I2C 20-SOIC Type: Clock/Calendar Features: Alarm, FRAM, Leap Year, Square Wave Output, TCXO/Crystal Memory Size: 2KB Time Format: HH:MM:SS (12/24 hr) Date Format: YY-MM-DD-dd Interface: I2C, 2-Wire Serial Voltage - Supply: 2.7 V ~ 3.63 V Voltage - Supply, Battery: 2.3 V ~ 3.6 V Current - Timekeeping (Max): 110µA @ 3.63V Operating Temperature: -40°C ~ 85°C Mounting Type: Surface Mount Package / Case: 20-SOIC (0.295", 7.50mm Width) Supplier Device Package: 20-SOIC	Package: 20-SOIC (0.295", 7.50mm Width)	Stock3,312	Alarm, FRAM, Leap Year, Square Wave Output, TCXO/Crystal	2KB	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I2C, 2-Wire Serial	2.7 V ~ 3.63 V	2.3 V ~ 3.6 V	110µA @ 3.63V	-40°C ~ 85°C	Surface Mount	20-SOIC (0.295", 7.50mm Width)	20-SOIC
X1228S14-2.7T1	Intersil	IC RTC CLK/CALENDAR I2C 14-SOIC Type: Clock/Calendar Features: Alarm, Leap Year, Supervisor, Watchdog Timer Memory Size: - Time Format: HH:MM:SS (12/24 hr) Date Format: YY-MM-DD-dd Interface: I2C, 2-Wire Serial Voltage - Supply: 2.7 V ~ 5.5 V Voltage - Supply, Battery: 1.8 V ~ 5.5 V Current - Timekeeping (Max): 10µA ~ 20µA @ 2.7V ~ 5V Operating Temperature: 0°C ~ 70°C Mounting Type: Surface Mount Package / Case: 14-SOIC (0.154", 3.90mm Width) Supplier Device Package: 14-SOIC	Package: 14-SOIC (0.154", 3.90mm Width)	Stock2,928	Alarm, Leap Year, Supervisor, Watchdog Timer	-	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	10µA ~ 20µA @ 2.7V ~ 5V	0°C ~ 70°C	Surface Mount	14-SOIC (0.154", 3.90mm Width)	14-SOIC
DS1602S+	Maxim Integrated	IC RTC ELAPSED CNT SER 8-SOIC Type: Elapsed Time Counter Features: - Memory Size: - Time Format: Binary Date Format: Binary Interface: 3-Wire Serial Voltage - Supply: 4.5 V ~ 5.5 V Voltage - Supply, Battery: 2.5 V ~ 3.5 V Current - Timekeeping (Max): 50µA @ 5V Operating Temperature: -40°C ~ 85°C Mounting Type: Surface Mount Package / Case: 8-SOIC (0.209", 5.30mm Width) Supplier Device Package: 8-SO	Package: 8-SOIC (0.209", 5.30mm Width)	Stock3,616	-	-	Binary	Binary	3-Wire Serial	4.5 V ~ 5.5 V	2.5 V ~ 3.5 V	50µA @ 5V	-40°C ~ 85°C	Surface Mount	8-SOIC (0.209", 5.30mm Width)	8-SO
DS1284Q+	Maxim Integrated	IC RTC CLK/CALENDAR PAR 28-PLCC Type: Clock/Calendar Features: Alarm, Leap Year, Square Wave Output, SRAM, Watchdog Timer Memory Size: 50B Time Format: HH:MM:SS:hh (12/24 hr) Date Format: YY-MM-DD-dd Interface: Parallel Voltage - Supply: 4.5 V ~ 5.5 V Voltage - Supply, Battery: 2.4 V ~ 3.5 V Current - Timekeeping (Max): 7mA @ 5V Operating Temperature: 0°C ~ 70°C Mounting Type: Surface Mount Package / Case: 28-LCC (J-Lead) Supplier Device Package: 28-PLCC (11.51x11.51)	Package: 28-LCC (J-Lead)	Stock7,968	Alarm, Leap Year, Square Wave Output, SRAM, Watchdog Timer	50B	HH:MM:SS:hh (12/24 hr)	YY-MM-DD-dd	Parallel	4.5 V ~ 5.5 V	2.4 V ~ 3.5 V	7mA @ 5V	0°C ~ 70°C	Surface Mount	28-LCC (J-Lead)	28-PLCC (11.51x11.51)
M41T256YMH7F	STMicroelectronics	IC RTC CLK/CALENDAR I2C 44-SOH Type: Clock/Calendar Features: Leap Year, NVSRAM Memory Size: 32KB Time Format: HH:MM:SS:hh (24 hr) Date Format: YY-MM-DD-dd Interface: I2C, 2-Wire Serial Voltage - Supply: 4.5 V ~ 5.5 V Voltage - Supply, Battery: 2.5 V ~ 3.5 V Current - Timekeeping (Max): 2.5mA @ 4.5V ~ 5.5V Operating Temperature: -25°C ~ 70°C Mounting Type: Surface Mount Package / Case: 44-BSOP (0.337", 8.56mm Width) requires SNAPHAT Supplier Device Package: 44-SOH	Package: 44-BSOP (0.337", 8.56mm Width) requires SNAPHAT	Stock7,632	Leap Year, NVSRAM	32KB	HH:MM:SS:hh (24 hr)	YY-MM-DD-dd	I2C, 2-Wire Serial	4.5 V ~ 5.5 V	2.5 V ~ 3.5 V	2.5mA @ 4.5V ~ 5.5V	-25°C ~ 70°C	Surface Mount	44-BSOP (0.337", 8.56mm Width) requires SNAPHAT	44-SOH
DS1340U-3	Maxim Integrated	IC RTC CLK/CALENDAR I2C 8-USOP Type: Clock/Calendar Features: Leap Year, Trickle-Charger Memory Size: - Time Format: HH:MM:SS (24 hr) Date Format: YY-MM-DD-dd Interface: I2C, 2-Wire Serial Voltage - Supply: 2.7 V ~ 5.5 V Voltage - Supply, Battery: 1.3 V ~ 3.7 V Current - Timekeeping (Max): 125µA @ 3.3V Operating Temperature: -40°C ~ 85°C Mounting Type: Surface Mount Package / Case: 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Supplier Device Package: 8-uMAX	Package: 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)	Stock6,624	Leap Year, Trickle-Charger	-	HH:MM:SS (24 hr)	YY-MM-DD-dd	I2C, 2-Wire Serial	2.7 V ~ 5.5 V	1.3 V ~ 3.7 V	125µA @ 3.3V	-40°C ~ 85°C	Surface Mount	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)	8-uMAX
M48T35AV-10MH6E	STMicroelectronics	IC RTC CLK/CALENDAR PAR 28SOH Type: Clock/Calendar Features: Leap Year Memory Size: - Time Format: HH:MM:SS (24 hr) Date Format: YY-MM-DD-dd Interface: Parallel Voltage - Supply: 3 V ~ 3.6 V Voltage - Supply, Battery: - Current - Timekeeping (Max): 2mA @ 3V ~ 3.6V Operating Temperature: -40°C ~ 85°C Mounting Type: Surface Mount Package / Case: 28-SOP (0.350", 8.89mm Width) with SNAPHAT Sockets Supplier Device Package: 28-SOH	Package: 28-SOP (0.350", 8.89mm Width) with SNAPHAT Sockets	Stock2,256	Leap Year	-	HH:MM:SS (24 hr)	YY-MM-DD-dd	Parallel	3 V ~ 3.6 V	-	2mA @ 3V ~ 3.6V	-40°C ~ 85°C	Surface Mount	28-SOP (0.350", 8.89mm Width) with SNAPHAT Sockets	28-SOH
DS1744P-70IND	Maxim Integrated	IC RTC CLK/CALENDAR PAR 34-PCM Type: Clock/Calendar Features: Leap Year, NVSRAM, Y2K Memory Size: 32KB Time Format: HH:MM:SS (24 hr) Date Format: YY-MM-DD-dd Interface: Parallel Voltage - Supply: 4.5 V ~ 5.5 V Voltage - Supply, Battery: 3V Current - Timekeeping (Max): 4mA @ 5V Operating Temperature: -40°C ~ 85°C Mounting Type: Surface Mount Package / Case: 34-PowerCap? Module Supplier Device Package: 34-PowerCap Module	Package: 34-PowerCap? Module	Stock7,424	Leap Year, NVSRAM, Y2K	32KB	HH:MM:SS (24 hr)	YY-MM-DD-dd	Parallel	4.5 V ~ 5.5 V	3V	4mA @ 5V	-40°C ~ 85°C	Surface Mount	34-PowerCap? Module	34-PowerCap Module
X1227S8-4.5A	Intersil	IC RTC CLK/CALENDAR I2C 8-SOIC Type: Clock/Calendar Features: Alarm, Leap Year, Supervisor, Watchdog Timer Memory Size: - Time Format: HH:MM:SS (12/24 hr) Date Format: YY-MM-DD-dd Interface: I2C, 2-Wire Serial Voltage - Supply: 4.5 V ~ 5.5 V Voltage - Supply, Battery: 1.8 V ~ 5.5 V Current - Timekeeping (Max): 10µA ~ 20µA @ 2.7V ~ 5V Operating Temperature: 0°C ~ 70°C Mounting Type: Surface Mount Package / Case: 8-SOIC (0.154", 3.90mm Width) Supplier Device Package: 8-SOIC	Package: 8-SOIC (0.154", 3.90mm Width)	Stock6,832	Alarm, Leap Year, Supervisor, Watchdog Timer	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I2C, 2-Wire Serial	4.5 V ~ 5.5 V	1.8 V ~ 5.5 V	10µA ~ 20µA @ 2.7V ~ 5V	0°C ~ 70°C	Surface Mount	8-SOIC (0.154", 3.90mm Width)	8-SOIC
DS3231MZ+TRL	Maxim Integrated	IC RTC CLK/CALENDAR I2C 8-SOIC Type: Clock/Calendar Features: Alarm, Leap Year, Square Wave Output Memory Size: - Time Format: HH:MM:SS (12/24 hr) Date Format: YY-MM-DD-dd Interface: I2C, 2-Wire Serial Voltage - Supply: 2.3 V ~ 5.5 V Voltage - Supply, Battery: 2.3 V ~ 5.5 V Current - Timekeeping (Max): 130µA ~ 200µA @ 3.63V ~ 5.5V Operating Temperature: -40°C ~ 85°C Mounting Type: Surface Mount Package / Case: 8-SOIC (0.154", 3.90mm Width) Supplier Device Package: 8-SOIC	Package: 8-SOIC (0.154", 3.90mm Width)	Stock1,021,116	Alarm, Leap Year, Square Wave Output	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I2C, 2-Wire Serial	2.3 V ~ 5.5 V	2.3 V ~ 5.5 V	130µA ~ 200µA @ 3.63V ~ 5.5V	-40°C ~ 85°C	Surface Mount	8-SOIC (0.154", 3.90mm Width)	8-SOIC
BQ3285ESTR	Texas Instruments	IC RTC CLK/CALENDAR PAR 24-SOIC Type: Clock/Calendar Features: Alarm, Daylight Savings, Leap Year, NVSRAM, Square Wave Output Memory Size: 242B Time Format: HH:MM:SS (12/24 hr) Date Format: YY-MM-DD-dd Interface: Parallel Voltage - Supply: 4.5 V ~ 5.5 V Voltage - Supply, Battery: 2.5 V ~ 4 V Current - Timekeeping (Max): 300µA @ 5V Operating Temperature: 0°C ~ 70°C Mounting Type: Surface Mount Package / Case: 24-SOIC (0.295", 7.50mm Width) Supplier Device Package: 24-SOIC	Package: 24-SOIC (0.295", 7.50mm Width)	Stock18,000	Alarm, Daylight Savings, Leap Year, NVSRAM, Square Wave Output	242B	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	Parallel	4.5 V ~ 5.5 V	2.5 V ~ 4 V	300µA @ 5V	0°C ~ 70°C	Surface Mount	24-SOIC (0.295", 7.50mm Width)	24-SOIC
1339AC-31SRGI	IDT, Integrated Device Technology Inc	IC RTC CLK/CALENDAR I2C 16-SOIC Type: Clock/Calendar Features: Alarm, Leap Year, Square Wave Output, Trickle-Charger Memory Size: - Time Format: HH:MM:SS (12/24 hr) Date Format: YY-MM-DD-dd Interface: I2C, 2-Wire Serial Voltage - Supply: 2.7 V ~ 5.5 V Voltage - Supply, Battery: 1.3 V ~ 3.7 V Current - Timekeeping (Max): 200µA @ 3.63V ~ 5.5V Operating Temperature: -40°C ~ 85°C Mounting Type: Surface Mount Package / Case: 16-SOIC (0.295", 7.50mm Width) Supplier Device Package: 16-SOIC	Package: 16-SOIC (0.295", 7.50mm Width)	Stock4,784	Alarm, Leap Year, Square Wave Output, Trickle-Charger	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I2C, 2-Wire Serial	2.7 V ~ 5.5 V	1.3 V ~ 3.7 V	200µA @ 3.63V ~ 5.5V	-40°C ~ 85°C	Surface Mount	16-SOIC (0.295", 7.50mm Width)	16-SOIC
MCP79512T-I/MS	Microchip Technology	IC RTC CLK/CALENDAR SPI 10-MSOP Type: Clock/Calendar Features: Alarm, EEPROM, Leap Year, Square Wave Output, SRAM, Unique ID Memory Size: 64B Time Format: HH:MM:SS:hh (12/24 hr) Date Format: YY-MM-DD-dd Interface: SPI Voltage - Supply: 1.8 V ~ 3.6 V Voltage - Supply, Battery: 1.3 V ~ 3.6 V Current - Timekeeping (Max): 1µA @ 1.8V ~ 3.6V Operating Temperature: -40°C ~ 85°C Mounting Type: Surface Mount Package / Case: 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) Supplier Device Package: 10-MSOP	Package: 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)	Stock5,296	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
MCP7940NT-E/SN	Microchip Technology	IC RTC CLK/CALENDAR I2C 8-SOIC Type: Clock/Calendar Features: Alarm, Leap Year, Square Wave Output, SRAM Memory Size: 64B Time Format: HH:MM:SS (12/24 hr) Date Format: YY-MM-DD-dd Interface: I2C, 2-Wire Serial Voltage - Supply: 1.8 V ~ 5.5 V Voltage - Supply, Battery: 1.3 V ~ 5.5 V Current - Timekeeping (Max): 1.2µA @ 3.3V Operating Temperature: -40°C ~ 125°C Mounting Type: Surface Mount Package / Case: 8-SOIC (0.154", 3.90mm Width) Supplier Device Package: 8-SOIC	Package: 8-SOIC (0.154", 3.90mm Width)	Stock7,856	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
DS12885T+	Maxim Integrated	IC RTC CLK/CALENDAR PAR 32-TQFP Type: Clock/Calendar Features: Alarm, Daylight Savings, Leap Year, NVSRAM, Square Wave Output Memory Size: 114B Time Format: HH:MM:SS (12/24 hr) Date Format: YY-MM-DD-dd Interface: Parallel Voltage - Supply: 4.5 V ~ 5.5 V Voltage - Supply, Battery: 2.5 V ~ 4 V Current - Timekeeping (Max): 15mA @ 4.5V ~ 5.5V Operating Temperature: 0°C ~ 70°C Mounting Type: Surface Mount Package / Case: 32-TQFP Supplier Device Package: 32-TQFP (7x7)	Package: 32-TQFP	Stock6,816	Alarm, Daylight Savings, Leap Year, NVSRAM, Square Wave Output	114B	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	Parallel	4.5 V ~ 5.5 V	2.5 V ~ 4 V	15mA @ 4.5V ~ 5.5V	0°C ~ 70°C	Surface Mount	32-TQFP	32-TQFP (7x7)
ISL12058IRTZ	Intersil	IC RTC CLK/CALENDAR I2C 8-TDFN Type: Clock/Calendar Features: Alarm, Leap Year Memory Size: - Time Format: HH:MM:SS (12/24 hr) Date Format: YY-MM-DD-dd Interface: I2C, 2-Wire Serial Voltage - Supply: 1.8 V ~ 3.6 V Voltage - Supply, Battery: - Current - Timekeeping (Max): 0.65µA @ 1.8V Operating Temperature: -40°C ~ 85°C Mounting Type: Surface Mount Package / Case: 8-WDFN Exposed Pad Supplier Device Package: 8-TDFN (3x3)	Package: 8-WDFN Exposed Pad	Stock5,840	Alarm, Leap Year	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I2C, 2-Wire Serial	1.8 V ~ 3.6 V	-	0.65µA @ 1.8V	-40°C ~ 85°C	Surface Mount	8-WDFN Exposed Pad	8-TDFN (3x3)
DS1558Y+	Maxim Integrated	IC RTC CLK/CALENDAR PAR 48-LQFP Type: Clock/Calendar Features: Alarm, Leap Year, Watchdog Timer, Y2K Memory Size: - Time Format: HH:MM:SS (24 hr) Date Format: YY-MM-DD-dd Interface: Parallel Voltage - Supply: 4.5 V ~ 5.5 V Voltage - Supply, Battery: 2.5 V ~ 3.7 V Current - Timekeeping (Max): 6mA @ 5V Operating Temperature: -40°C ~ 85°C Mounting Type: Surface Mount Package / Case: 48-LQFP Supplier Device Package: 48-LQFP/48-TQFP (7x7)	Package: 48-LQFP	Stock8,820	Alarm, Leap Year, Watchdog Timer, Y2K	-	HH:MM:SS (24 hr)	YY-MM-DD-dd	Parallel	4.5 V ~ 5.5 V	2.5 V ~ 3.7 V	6mA @ 5V	-40°C ~ 85°C	Surface Mount	48-LQFP	48-LQFP/48-TQFP (7x7)
DS3234S#	Maxim Integrated	IC RTC CLK/CALENDAR SPI 20-SOIC Type: Clock/Calendar Features: Alarm, Leap Year, Square Wave Output, SRAM, TCXO/Crystal Memory Size: 256B Time Format: HH:MM:SS (12/24 hr) Date Format: YY-MM-DD-dd Interface: SPI Voltage - Supply: 2 V ~ 5.5 V Voltage - Supply, Battery: 2 V ~ 3.8 V Current - Timekeeping (Max): 120µA ~ 160µA @ 3.63V ~ 5.5V Operating Temperature: 0°C ~ 70°C Mounting Type: Surface Mount Package / Case: 20-SOIC (0.295", 7.50mm Width) Supplier Device Package: 20-SOIC	Package: 20-SOIC (0.295", 7.50mm Width)	Stock3,712	Alarm, Leap Year, Square Wave Output, SRAM, TCXO/Crystal	256B	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	SPI	2 V ~ 5.5 V	2 V ~ 3.8 V	120µA ~ 160µA @ 3.63V ~ 5.5V	0°C ~ 70°C	Surface Mount	20-SOIC (0.295", 7.50mm Width)	20-SOIC
RX8900CE:UA3	EPSON	IC RTC CLK/CALENDAR I2C 10-SMD Type: Clock/Calendar Features: Alarm Memory Size: - Time Format: HH:MM:SS (24 hr) Date Format: YY-MM-DD-dd Interface: I2C, 2-Wire Serial Voltage - Supply: 2.5 V ~ 5.5 V Voltage - Supply, Battery: 1.6 V ~ 5.5 V Current - Timekeeping (Max): 1.35µA ~ 1.45µA @ 3V ~ 5V Operating Temperature: -40°C ~ 85°C Mounting Type: Surface Mount Package / Case: 10-SMD, No Lead Supplier Device Package: 10-SMD	Package: 10-SMD, No Lead	Stock26,232	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	10-SMD, No Lead	10-SMD
RTC-4543SA:A0:ROHS	EPSON	IC RTC CLK/CALENDAR SER 14-SOIC Type: Clock/Calendar Features: Leap Year Memory Size: - Time Format: HH:MM:SS (24 hr) Date Format: YY-MM-DD-dd Interface: 3-Wire Serial Voltage - Supply: 2.5 V ~ 5.5 V Voltage - Supply, Battery: - Current - Timekeeping (Max): 1µA ~ 3µA @ 2V ~ 5V Operating Temperature: -40°C ~ 85°C Mounting Type: Surface Mount Package / Case: 14-SOIC (0.209", 5.30mm Width) Supplier Device Package: 14-SOP	Package: 14-SOIC (0.209", 5.30mm Width)	Stock130,488	Leap Year	-	HH:MM:SS (24 hr)	YY-MM-DD-dd	3-Wire Serial	2.5 V ~ 5.5 V	-	1µA ~ 3µA @ 2V ~ 5V	-40°C ~ 85°C	Surface Mount	14-SOIC (0.209", 5.30mm Width)	14-SOP
X1227S8I-2.7AT2	Renesas Electronics America	IC RTC CLK/CALENDAR I2C 8-SOIC Type: Clock/Calendar Features: Alarm, Leap Year, Supervisor, Watchdog Timer Memory Size: - Time Format: HH:MM:SS (12/24 hr) Date Format: YY-MM-DD-dd Interface: I²C, 2-Wire Serial Voltage - Supply: 2.7 V ~ 5.5 V Voltage - Supply, Battery: 1.8 V ~ 5.5 V Current - Timekeeping (Max): 10µA ~ 20µA @ 2.7V ~ 5V Operating Temperature: -40°C ~ 85°C Mounting Type: Surface Mount Package / Case: 8-SOIC (0.154", 3.90mm Width) Supplier Device Package: 8-SOIC	Package: 8-SOIC (0.154", 3.90mm Width)	Stock5,088	Alarm, Leap Year, Supervisor, Watchdog Timer	-	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	10µA ~ 20µA @ 2.7V ~ 5V	-40°C ~ 85°C	Surface Mount	8-SOIC (0.154", 3.90mm Width)	8-SOIC
1339BC-31SRGI	Renesas Electronics Corporation	IC RTC CLK/CALENDAR I2C 16SOIC Type: Clock/Calendar Features: Alarm, Leap Year, Square Wave Output, Trickle-Charger Memory Size: - Time Format: HH:MM:SS (12/24 hr) Date Format: YY-MM-DD-dd Interface: I2C, Serial Voltage - Supply: 3.3V ~ 5.5V Voltage - Supply, Battery: 1.3V ~ 3.7V Current - Timekeeping (Max): 200µA @ 3.63V ~ 5.5V Operating Temperature: -40°C ~ 85°C (TA) Mounting Type: Surface Mount Package / Case: 16-SOIC (0.295", 7.50mm Width) Supplier Device Package: 16-SOIC	Package: -	Request a Quote	Alarm, Leap Year, Square Wave Output, Trickle-Charger	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I2C, Serial	3.3V ~ 5.5V	1.3V ~ 3.7V	200µA @ 3.63V ~ 5.5V	-40°C ~ 85°C (TA)	Surface Mount	16-SOIC (0.295", 7.50mm Width)	16-SOIC