Real Time Clocks

Photo Mfr. Part # Availability Quantity Datasheet Series Package/Case Packaging Product Status Programmable Type Features Memory Size Time Format Date Format Interface Voltage - Supply Voltage - Supply, Battery Current - Timekeeping (Max) Operating Temperature Mounting Type Grade Qualification Supplier Device Package
PCA2129T/Q900/2,51

PCA2129T/Q900/2,51

IC RTC CLOCK/CALENDAR I2C 16SO

NXP USA Inc.

1,656
RFQ
Datasheet - 16-SOIC (0.295", 7.50mm Width) Tape & Reel (TR) Active Not Verified 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 1.8V ~ 4.2V 1.8V ~ 4.2V 1.5µA @ 3.3V -40°C ~ 85°C Surface Mount - - 16-SO
ISL12022IBZ-T7A

ISL12022IBZ-T7A

IC RTC CLK/CALENDAR I2C 8SOIC

Renesas Electronics Corporation

300
RFQ
Datasheet - 8-SOIC (0.154", 3.90mm Width) Tape & Reel (TR) Active Not Verified Clock/Calendar Alarm, Daylight Savings, Leap Year, SRAM 128B HH:MM:SS (12/24 hr) YY-MM-DD-dd I2C, 2-Wire Serial 2.7V ~ 5.5V 1.8V ~ 5.5V 14µA ~ 15µA @ 3V ~ 5V -40°C ~ 85°C Surface Mount - - 8-SOIC
M41ST85WMH6F

M41ST85WMH6F

IC RTC CLK/CALENDAR I2C 28SOH

STMicroelectronics

1,434
RFQ
Datasheet - 28-SOP (0.350", 8.89mm Width) with SNAPHAT Sockets Tape & Reel (TR) Active Not Verified Clock/Calendar Alarm, Leap Year, NVSRAM, Square Wave Output, Supervisor, Watchdog Timer 44B HH:MM:SS:hh (24 hr) YY-MM-DD-dd I2C, 2-Wire Serial 2.7V ~ 3.6V 2.5V ~ 3.5V 0.5mA @ 2.7V ~ 3.6V -40°C ~ 85°C Surface Mount - - 28-SOH
BQ3285S-SB2

BQ3285S-SB2

IC RTC CLK/CALENDAR PAR 24SOIC

Texas Instruments

391
RFQ
Datasheet - 24-SOIC (0.295", 7.50mm Width) Bulk Active Not Verified Clock/Calendar Alarm, Daylight Savings, Leap Year, NVSRAM, Square Wave Output 114B HH:MM:SS (12/24 hr) YY-MM-DD-dd Parallel 4.5V ~ 5.5V 2.5V ~ 4V - 0°C ~ 70°C Surface Mount - - 24-SOIC
M48T201Y-70MH1F

M48T201Y-70MH1F

IC RTC CLK/CALENDAR PAR 44SOH

STMicroelectronics

3,558
RFQ
Datasheet Timekeeper® 44-BSOP (0.337", 8.56mm Width) requires SNAPHAT Tape & Reel (TR) Active Not Verified Clock/Calendar Alarm, Leap Year, Square Wave Output, Supervisor, Watchdog Timer, Y2K - HH:MM:SS (24 hr) YY-MM-DD-dd Parallel 4.5V ~ 5.5V 3V 3mA @ 4.5V ~ 5.5V 0°C ~ 70°C Surface Mount - - 44-SOH
M48T12-70PC1

M48T12-70PC1

IC RTC CLK/CALENDAR PAR 24DIP

STMicroelectronics

488
RFQ
Datasheet Timekeeper® 24-DIP Module (0.600", 15.24mm) Tube Active Not Verified Clock/Calendar Leap Year - HH:MM:SS (24 hr) YY-MM-DD-dd Parallel 4.5V ~ 5.5V - 3mA @ 4.5V ~ 5.5V 0°C ~ 70°C Through Hole - - 24-PCDIP, CAPHAT®
CDP68HC68T1M2Z

CDP68HC68T1M2Z

IC RTC CLK/CALENDAR SPI 16SOIC

Renesas Electronics Corporation

540
RFQ
Datasheet - 16-SOIC (0.295", 7.50mm Width) Tube Active Not Verified Clock/Calendar Alarm, Leap Year, Square Wave Output, Watchdog Timer 32B HH:MM:SS (12/24 hr) YY-MM-DD-dd SPI 3V ~ 6V 2.2V ~ 6V 20µA ~ 500µA @ 5V -40°C ~ 85°C Surface Mount - - 16-SOIC
MCP7940MT-I/ST

MCP7940MT-I/ST

IC RTC CLK/CALENDAR I2C 8TSSOP

Microchip Technology

1,374
RFQ
Datasheet - 8-TSSOP (0.173", 4.40mm Width) Tape & Reel (TR) Active Not Verified Clock/Calendar Alarm, Leap Year, Square Wave Output, SRAM 64B HH:MM:SS (12/24 hr) YY-MM-DD-dd I2C, 2-Wire Serial 1.8V ~ 5.5V - 1µA @ 5.5V -40°C ~ 85°C Surface Mount - - 8-TSSOP
PCF85063BTL/1,118

PCF85063BTL/1,118

IC RTC CLK/CALENDAR SPI 10DFN

NXP USA Inc.

19,731
RFQ
Datasheet - 10-XFDFN Exposed Pad Tape & Reel (TR) Active Not Verified Clock/Calendar Alarm, Leap Year, Square Wave Output - HH:MM:SS (12/24 hr) YY-MM-DD-dd SPI 0.9V ~ 5.5V - 0.6µA @ 3.3V -40°C ~ 85°C Surface Mount - - 10-DFN (2.6x2.6)
MCP79402-I/ST

MCP79402-I/ST

IC RTC CLK/CALENDAR I2C 8TSSOP

Microchip Technology

339
RFQ
Datasheet - 8-TSSOP (0.173", 4.40mm Width) Tube Active Not Verified 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 1.8V ~ 5.5V 1.3V ~ 5.5V 1.2µA (Typ) @ 3.3V -40°C ~ 85°C Surface Mount - - 8-TSSOP
MCP79401-I/MS

MCP79401-I/MS

IC RTC CLK/CALENDAR I2C 8MSOP

Microchip Technology

218
RFQ
Datasheet - 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Tube Active Not Verified 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 1.8V ~ 5.5V 1.3V ~ 5.5V 1.2µA (Typ) @ 3.3V -40°C ~ 85°C Surface Mount - - 8-MSOP
MCP79402-I/MS

MCP79402-I/MS

IC RTC CLK/CALENDAR I2C 8MSOP

Microchip Technology

169
RFQ
Datasheet - 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Tube Active Not Verified 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 1.8V ~ 5.5V 1.3V ~ 5.5V 1.2µA (Typ) @ 3.3V -40°C ~ 85°C Surface Mount - - 8-MSOP
MCP79412-I/MS

MCP79412-I/MS

IC RTC CLK/CALENDAR I2C 8MSOP

Microchip Technology

686
RFQ
Datasheet - 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Tube Active Not Verified 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 1.8V ~ 5.5V 1.3V ~ 5.5V 1.2µA @ 3.3V -40°C ~ 85°C Surface Mount - - 8-MSOP
MCP79411T-I/MNY

MCP79411T-I/MNY

IC RTC CLK/CALENDAR I2C 8TDFN

Microchip Technology

2,604
RFQ
Datasheet - 8-WFDFN Exposed Pad Tape & Reel (TR) Active Not Verified 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 1.8V ~ 5.5V 1.3V ~ 5.5V 1.2µA @ 3.3V -40°C ~ 85°C Surface Mount - - 8-TDFN (2x3)
BQ32002D

BQ32002D

IC RTC CLK/CALENDAR I2C 8SOIC

Texas Instruments

220
RFQ
Datasheet - 8-SOIC (0.154", 3.90mm Width) Tube Active Not Verified Clock/Calendar Leap Year, Square Wave Output - HH:MM:SS (24 hr) YY-MM-DD-dd I2C, 2-Wire Serial 3V ~ 3.6V 1.4V ~ 3.6V 200µA @ 3.3V -40°C ~ 85°C (TA) Surface Mount - - 8-SOIC
MCP79520-I/MS

MCP79520-I/MS

IC RTC CLK/CALENDAR SPI 10MSOP

Microchip Technology

869
RFQ

-

- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) Tube Active Not Verified 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 1.8V ~ 3.6V 1.3V ~ 3.6V 1µA @ 1.8V ~ 3.6V -40°C ~ 85°C Surface Mount - - 10-MSOP
BQ32000D

BQ32000D

IC RTC CLK/CALENDAR I2C 8SOIC

Texas Instruments

400
RFQ
Datasheet - 8-SOIC (0.154", 3.90mm Width) Tube Active Not Verified Clock/Calendar Leap Year, Square Wave Output, Trickle-Charger - HH:MM:SS (24 hr) YY-MM-DD-dd I2C, 2-Wire Serial 3V ~ 3.6V 1.4V ~ 3.6V 100µA @ 3.3V -40°C ~ 85°C Surface Mount - - 8-SOIC
PT7C4372ALEX

PT7C4372ALEX

IC RTC CLK/CALENDAR I2C 8TSSOP

Diodes Incorporated

4,310
RFQ
Datasheet - 8-TSSOP (0.173", 4.40mm Width) Tape & Reel (TR) Active Not Verified Clock/Calendar Alarm, Leap Year - HH:MM:SS (12/24 hr) YY-MM-DD-dd I2C, 2-Wire Serial 1.8V ~ 6V - 0.8µA @ 3V -40°C ~ 85°C Surface Mount - - 8-TSSOP
MCP795W12-I/SL

MCP795W12-I/SL

IC RTC CLK/CALENDAR SPI 14SOIC

Microchip Technology

223
RFQ
Datasheet - 14-SOIC (0.154", 3.90mm Width) Tube Active Not Verified Clock/Calendar 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 1.8V ~ 3.6V 1.3V ~ 3.6V 1µA @ 1.8V ~ 5.5V -40°C ~ 85°C Surface Mount - - 14-SOIC
MCP795W11-I/ST

MCP795W11-I/ST

IC RTC CLK/CALENDAR SPI 14TSSOP

Microchip Technology

107
RFQ
Datasheet - 14-TSSOP (0.173", 4.40mm Width) Tube Active Not Verified Clock/Calendar 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 1.8V ~ 3.6V 1.3V ~ 3.6V 1µA @ 1.8V ~ 5.5V -40°C ~ 85°C Surface Mount - - 14-TSSOP
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