Real Time Clocks

Manufacturer Series Package/Case Packaging Part Status Programmable Type Memory Size Time Format Date Format Features Interface Voltage - Supply Voltage - Supply, Battery Current - Timekeeping (Max) Operating Temperature Supplier Device Package Mounting Style Qualification Grade























































































































































































































































































































































































































































































































































































































































































































































































































































































































































































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Photo Mfr. Part # Availability Price Quantity Datasheet Series Package/Case Packaging Part Status Programmable Type Memory Size Time Format Date Format Features Interface Voltage - Supply Voltage - Supply, Battery Current - Timekeeping (Max) Operating Temperature Supplier Device Package Mounting Style Qualification Grade
DS1254YB-100

DS1254YB-100

IC RTC PHANTOM CHIP PAR 168BGA

Analog Devices Inc./Maxim Integrated

2,130
DS1254YB-100

Datasheet

- 168-BBGA Module Bag Obsolete Not Verified Phantom Time Chip 2MB HH:MM:SS:hh (12/24 hr) YY-MM-DD-dd Leap Year, NVSRAM Parallel 4.5V ~ 5.5V 3V 7mA @ 3.3V 0°C ~ 70°C 168-BGA (40x40) Surface Mount - -
PCF2123BS/1,518

PCF2123BS/1,518

IC RTC CLK/CALENDAR SPI 16HVQFN

NXP USA Inc.

4,733
PCF2123BS/1,518

Datasheet

- 16-VFQFN Exposed Pad Tape & Reel (TR) Active Not Verified Clock/Calendar - HH:MM:SS (12/24 hr) YY-MM-DD-dd Alarm, Leap Year, Square Wave Output, Watchdog Timer SPI 1.6V ~ 5.5V - 0.33µA ~ 0.38µA @ 2V ~ 5V -40°C ~ 85°C 16-HVQFN (3x3) Surface Mount - -
RS5C372A-E2-F

RS5C372A-E2-F

IC RTC CLK/CALENDAR I2C 8SSOP

Nisshinbo Micro Devices Inc.

4,383
RS5C372A-E2-F

Datasheet

- 8-LSSOP (0.173", 4.40mm Width) Tape & Reel (TR) Active Not Verified Clock/Calendar - HH:MM:SS (12/24 hr) YY-MM-DD-dd Alarm, Leap Year I2C, 2-Wire Serial 1.7V ~ 6V - 0.9µA ~ 2µA @ 3V ~ 6V -40°C ~ 85°C 8-SSOP Surface Mount - -
MAX31341CETB+T

MAX31341CETB+T

IC RTC CLK/CALENDAR I2C 10TDFN

Analog Devices Inc./Maxim Integrated

4,277
MAX31341CETB+T

Datasheet

- 10-WFDFN Exposed Pad Tape & Reel (TR) Active Not Verified Clock/Calendar 64B HH:MM:SS (24 hr) YY-MM-DD-dd Alarm, Leap Year, RAM, Square Wave Output, Trickle Charger I2C 1.6V ~ 3.6V 1.6V ~ 3.6V 0.33µA ~ 0.39µA @ 1.6V ~ 3.6V -40°C ~ 85°C 10-TDFN (3x3) Surface Mount - -
DS1371U+

DS1371U+

IC RTC BINARY COUNTER I2C 8UMAX

Analog Devices Inc./Maxim Integrated

2,187
DS1371U+

Datasheet

- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Tube Active Not Verified Binary Counter - Binary Binary Alarm, Square Wave Output, Watchdog Timer I2C, 2-Wire Serial 1.7V ~ 5.5V - 1.3µA @ 1.7V ~ 5.5V -40°C ~ 85°C 8-uMAX/uSOP Surface Mount - -
RX-8564LC:B0 PURE SN

RX-8564LC:B0 PURE SN

IC RTC CLK/CALENDAR I2C 12VSOJ

EPSON

1,946
RX-8564LC:B0 PURE SN

Datasheet

RX-8564LC 12-TFSOJ (0.094", 2.40mm Width) Tape & Reel (TR) Active Not Verified Clock/Calendar - HH:MM:SS (24 hr) YY-MM-DD-dd Alarm, Leap Year I2C, 2-Wire Serial 1.8V ~ 5.5V - 0.65µA ~ 0.8µA @ 2V ~ 5V -40°C ~ 85°C 12-VSOJ Surface Mount - -
DS1344E-3+T&R

DS1344E-3+T&R

IC RTC CLK/CALENDAR SPI 20TSSOP

Analog Devices Inc./Maxim Integrated

1,102
DS1344E-3+T&R

Datasheet

- 20-TSSOP (0.173", 4.40mm Width) Tape & Reel (TR) Active Not Verified Clock/Calendar 96B HH:MM:SS (12/24 hr) YY-MM-DD-dd Alarm, Leap Year, NVRAM, Square Wave Output, Trickle Charger SPI 2.7V ~ 5.5V 1.3V ~ 5.5V - -40°C ~ 85°C 20-TSSOP Surface Mount - -
AB-RTCMC-32.768KHZ-B5ZE-S3-T

AB-RTCMC-32.768KHZ-B5ZE-S3-T

IC RTC CLK/CALENDAR I2C MODULE

Abracon LLC

1,949
AB-RTCMC-32.768KHZ-B5ZE-S3-T

Datasheet

- 10-SMD Module Tape & Reel (TR) Active Not Verified Clock/Calendar - HH:MM:SS (12/24 hr) YY-MM-DD-dd Alarm, Leap Year, Square Wave Output I2C, 2-Wire Serial 1.2V ~ 5.5V 1.8V ~ 5.5V 0.5µA @ 2V ~ 5V -40°C ~ 85°C Module Surface Mount - -
DS1305EN+

DS1305EN+

IC RTC CLK/CALENDAR SPI 20TSSOP

Analog Devices Inc./Maxim Integrated

1,442
DS1305EN+

Datasheet

- 20-TSSOP (0.173", 4.40mm Width) Tube Active Not Verified Clock/Calendar 96B HH:MM:SS (12/24 hr) YY-MM-DD-dd Alarm, Leap Year, NVSRAM, Trickle-Charger SPI 2V ~ 5.5V 2V ~ 5.5V 25.3µA ~ 81µA @ 2V ~ 5V -40°C ~ 85°C 20-TSSOP Surface Mount - -
DS3231SN#T&R

DS3231SN#T&R

IC RTC CLK/CALENDAR I2C 16SOIC

Analog Devices Inc./Maxim Integrated

4,364
DS3231SN#T&R

Datasheet

- 16-SOIC (0.295", 7.50mm Width) Tape & Reel (TR) Active Not Verified Clock/Calendar - HH:MM:SS (12/24 hr) YY-MM-DD-dd Alarm, Leap Year, Square Wave Output, TCXO/Crystal I2C, 2-Wire Serial 2.3V ~ 5.5V 2.3V ~ 5.5V 110µA ~ 170µA @ 3.63V ~ 5.5V -40°C ~ 85°C 16-SOIC Surface Mount - -
M48T35-70PC1

M48T35-70PC1

IC RTC CLK/CALENDAR PAR 28DIP

STMicroelectronics

4,493
M48T35-70PC1

Datasheet

Timekeeper® 28-DIP Module (0.600", 15.24mm) Tube Active Not Verified Clock/Calendar - HH:MM:SS (24 hr) YY-MM-DD-dd Leap Year Parallel 4.75V ~ 5.5V - 2mA @ 4.75V ~ 5.5V 0°C ~ 70°C 28-PCDIP, CAPHAT® Through Hole - -
MCP795W20-I/SL

MCP795W20-I/SL

IC RTC CLK/CALENDAR SPI 14SOIC

Microchip Technology

4,373
MCP795W20-I/SL

Datasheet

- 14-SOIC (0.154", 3.90mm Width) Tube Active Not Verified Clock/Calendar 64B HH:MM:SS:hh (12/24 hr) YY-MM-DD-dd Alarm, EEPROM, Leap Year, Square Wave Output, SRAM, Watchdog Timer SPI 1.8V ~ 3.6V 1.3V ~ 3.6V 1µA @ 1.8V ~ 5.5V -40°C ~ 85°C 14-SOIC Surface Mount - -
MAX31341BEWC+T

MAX31341BEWC+T

IC RTC CLK/CALENDAR I2C 12WLP

Analog Devices Inc./Maxim Integrated

3,861
MAX31341BEWC+T

Datasheet

- 12-WFBGA, WLBGA Tape & Reel (TR) Active Not Verified Clock/Calendar 64B HH:MM:SS (24 hr) YY-MM-DD-dd Alarm, Leap Year, Square Wave Output I2C 1.6V ~ 3.6V 1.6V ~ 3.6V 0.33µA ~ 0.39µA @ 1.6V ~ 3.6V -40°C ~ 85°C 12-WLP (2.14x1.56) Surface Mount - -
DS3231MZ/V+T

DS3231MZ/V+T

IC RTC CLK/CALENDAR I2C 8SOIC

Analog Devices Inc./Maxim Integrated

3,386
DS3231MZ/V+T

Datasheet

- 8-SOIC (0.154", 3.90mm Width) Tape & Reel (TR) Not For New Designs Not Verified Clock/Calendar - HH:MM:SS (12/24 hr) YY-MM-DD-dd Alarm, Leap Year, Square Wave Output I2C, 2-Wire Serial 2.3V ~ 5.5V 2.3V ~ 5.5V 130µA ~ 200µA @ 3.63V ~ 5.5V -40°C ~ 85°C 8-SOIC Surface Mount AEC-Q100 Automotive
M48T58Y-70PC1

M48T58Y-70PC1

IC RTC CLK/CALENDAR PAR 28-DIP

STMicroelectronics

2,811
M48T58Y-70PC1

Datasheet

Timekeeper® 28-DIP Module (0.600", 15.24mm) Tube Active Not Verified Clock/Calendar - HH:MM:SS (24 hr) YY-MM-DD-dd Leap Year Parallel 4.5V ~ 5.5V - 3mA @ 4.5V ~ 5.5V 0°C ~ 70°C 28-PCDIP, CAPHAT® Through Hole - -
M48T12-150PC1

M48T12-150PC1

IC RTC CLK/CALENDAR PAR 24DIP

STMicroelectronics

2,900
M48T12-150PC1

Datasheet

Timekeeper® 24-DIP Module (0.600", 15.24mm) Tube Active Not Verified Clock/Calendar - HH:MM:SS (24 hr) YY-MM-DD-dd Leap Year Parallel 4.5V ~ 5.5V - 3mA @ 4.5V ~ 5.5V 0°C ~ 70°C 24-PCDIP, CAPHAT® Through Hole - -
M48T58-70PC1

M48T58-70PC1

IC RTC CLK/CALENDAR PAR 28DIP

STMicroelectronics

1,068
M48T58-70PC1

Datasheet

Timekeeper® 28-DIP Module (0.600", 15.24mm) Tube Active Not Verified Clock/Calendar - HH:MM:SS (24 hr) YY-MM-DD-dd Leap Year Parallel 4.75V ~ 5.5V - 3mA @ 4.75V ~ 5.5V 0°C ~ 70°C 28-PCDIP, CAPHAT® Through Hole - -
MCP7940M-I/ST

MCP7940M-I/ST

IC RTC CLK/CALENDAR I2C 8TSSOP

Microchip Technology

1,392
MCP7940M-I/ST

Datasheet

- 8-TSSOP (0.173", 4.40mm Width) Tube Active Not Verified Clock/Calendar 64B HH:MM:SS (12/24 hr) YY-MM-DD-dd Alarm, Leap Year, Square Wave Output, SRAM I2C, 2-Wire Serial 1.8V ~ 5.5V - 1µA @ 5.5V -40°C ~ 85°C 8-TSSOP Surface Mount - -
EM3028V3TP14B

EM3028V3TP14B

IC RTC CLK/CALENDAR I2C 14TSSOP

EM Microelectronic

4,937
EM3028V3TP14B

Datasheet

- 14-TSSOP (0.173", 4.40mm Width) Tape & Reel (TR) Active Not Verified Clock/Calendar 43B HH:MM:SS:hh (12/24 hr) YY-MM-DD-dd Alarm, EEPROM, Leap Year, Square Wave Output, SRAM, Trickle-Charger I2C, 2-Wire Serial 1.1V ~ 5.5V 1.1V ~ 5.5V 0.4µA @ 5V -40°C ~ 85°C 14-TSSOP Surface Mount - -
M48T18-100PC1

M48T18-100PC1

IC RTC CLK/CALENDAR PAR 28DIP

STMicroelectronics

3,641
M48T18-100PC1

Datasheet

Timekeeper® 28-DIP Module (0.600", 15.24mm) Tube Active Not Verified Clock/Calendar - HH:MM:SS (24 hr) YY-MM-DD-dd Leap Year, Watchdog Timer Parallel 4.5V ~ 5.5V - 3mA @ 4.5V ~ 5.5V 0°C ~ 70°C 28-PCDIP, CAPHAT® Through Hole - -
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