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    Real Time Clocks

    制造商 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























































































































































































































































































































































































































































































































































































































































































































































































































































































































































































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    Photo Mfr. Part # Availability Price 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
    EM3028C7B+

    EM3028C7B+

    IC RTC CLOCK/CALENDAR I2C SMD

    EM Microelectronic

    3,167
    RFQ

    -

    - 8-SMD Tape & Reel (TR) Active Not Verified Clock/Calendar Alarm, EEPROM, Leap Year, Square Wave Output, Trickle-Charger 43B HH:MM:SS (12/24 hr) YY-MM-DD-dd I2C 1.1V, 1.2V, 2V ~ 5.5V 1.1V ~ 5.5V 0.4µA @ 5V -40°C ~ 85°C (TA) Surface Mount - - SMD
    1339-31DCGI8

    1339-31DCGI8

    IC RTC CLK/CALENDAR I2C 8SOIC

    Renesas Electronics Corporation

    4,670
    RFQ
    1339-31DCGI8

    Datasheet

    - 8-SOIC (0.154", 3.90mm Width) Tape & Reel (TR) Active Not Verified Clock/Calendar Alarm, Leap Year, Square Wave Output, Trickle-Charger - HH:MM:SS (12/24 hr) YY-MM-DD-dd I2C, 2-Wire Serial 3.3V ~ 5.5V 1.3V ~ 3.7V 200µA @ 3.63V ~ 5.5V -40°C ~ 85°C Surface Mount - - 8-SOIC
    RX-8035SA:AC0 PURE SN

    RX-8035SA:AC0 PURE SN

    IC RTC TIME EVENT REC I2C 14SOP

    EPSON

    2,847
    RFQ
    RX-8035SA:AC0 PURE SN

    Datasheet

    RX-8035SA 14-SOIC (0.197", 5.00mm Width) Tape & Reel (TR) Active Not Verified Time Event Recorder Alarm - HH:MM:SS (12/24 hr) YY-MM-DD-dd I2C, 2-Wire Serial 2.4V ~ 5.5V 1V ~ 5.5V 2.5µA @ 3V -40°C ~ 85°C Surface Mount - - 14-SOP
    DS1306E/T&R

    DS1306E/T&R

    IC RTC CLK/CALENDAR SPI 20TSSOP

    Analog Devices Inc./Maxim Integrated

    4,230
    RFQ
    DS1306E/T&R

    Datasheet

    - 20-TSSOP (0.173", 4.40mm Width) Tape & Reel (TR) Obsolete Not Verified Clock/Calendar Alarm, Leap Year, NVSRAM, Square Wave Output, Trickle-Charger 96B HH:MM:SS (12/24 hr) YY-MM-DD-dd SPI 2V ~ 5.5V 2V ~ 5.5V 25.3µA ~ 81µA @ 2V ~ 5V -40°C ~ 85°C Surface Mount - - 20-TSSOP
    DS1305E/T&R

    DS1305E/T&R

    IC RTC CLK/CALENDAR SPI 20TSSOP

    Analog Devices Inc./Maxim Integrated

    4,607
    RFQ
    DS1305E/T&R

    Datasheet

    - 20-TSSOP (0.173", 4.40mm Width) Tape & Reel (TR) Obsolete Not Verified Clock/Calendar Alarm, Leap Year, NVSRAM, Trickle-Charger 96B HH:MM:SS (12/24 hr) YY-MM-DD-dd SPI 2V ~ 5.5V 2V ~ 5.5V 25.3µA ~ 81µA @ 2V ~ 5V 0°C ~ 70°C Surface Mount - - 20-TSSOP
    RV-8564-C3-32.768KHZ-10PPM-TA-QC

    RV-8564-C3-32.768KHZ-10PPM-TA-QC

    IC RTC CLK/CALENDAR I2C 10SON

    Micro Crystal AG

    2,342
    RFQ
    RV-8564-C3-32.768KHZ-10PPM-TA-QC

    Datasheet

    C3 10-VCDFN Tape & Reel (TR) Active Not Verified Clock/Calendar Alarm, Leap Year, Programmable Clock Output, Timer - HH:MM:SS (24 hr) YY-MM-DD-dd I2C, 2-Wire Serial 1V ~ 5.5V - 0.35µA @ 3V -40°C ~ 85°C (TA) Surface Mount - - 10-SON (3.7x2.5)
    PT7C4302WEX

    PT7C4302WEX

    IC RTC CLK/CALENDAR SER 8SOIC

    Diodes Incorporated

    6
    RFQ
    PT7C4302WEX

    Datasheet

    - 8-SOIC (0.154", 3.90mm Width) Tape & Reel (TR) Obsolete Not Verified Clock/Calendar Leap Year, NVSRAM, Square Wave Output, Trickle-Charger 31B HH:MM:SS (12/24 hr) YY-MM-DD-dd 3-Wire Serial 1.2V ~ 5.5V 1.5V ~ 5.5V 25.3µA ~ 81µA @ 2V ~ 5V -40°C ~ 85°C Surface Mount - - 8-SOIC
    RX-8035SA:AA0:PURE SN

    RX-8035SA:AA0:PURE SN

    IC RTC TIME EVENT REC I2C 14SOP

    EPSON

    4,893
    RFQ
    RX-8035SA:AA0:PURE SN

    Datasheet

    RX-8035SA 14-SOIC (0.197", 5.00mm Width) Tape & Reel (TR) Obsolete Not Verified Time Event Recorder Alarm - HH:MM:SS (12/24 hr) YY-MM-DD-dd I2C, 2-Wire Serial 2.4V ~ 5.5V 1V ~ 5.5V 2.5µA @ 3V -40°C ~ 85°C Surface Mount - - 14-SOP
    ISL1219IUZ-T

    ISL1219IUZ-T

    IC RTC EVENT REC I2C 10MSOP

    Renesas Electronics Corporation

    3,437
    RFQ
    ISL1219IUZ-T

    Datasheet

    - 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) Tape & Reel (TR) Active Not Verified Time Event Recorder Alarm, Leap Year, SRAM 2B HH:MM:SS (12/24 hr) YY-MM-DD-dd I2C, 2-Wire Serial 2.7V ~ 5.5V 1.8V ~ 5.5V 4µA ~ 6µA @ 3V ~ 5V -40°C ~ 85°C Surface Mount - - 10-MSOP
    PT7C4307WEX

    PT7C4307WEX

    IC RTC CLK/CALENDAR I2C 8SOIC

    Diodes Incorporated

    3,508
    RFQ
    PT7C4307WEX

    Datasheet

    - 8-SOIC (0.154", 3.90mm Width) Tape & Reel (TR) Obsolete Not Verified Clock/Calendar Alarm, Leap Year, NVSRAM, Square Wave Output 56B HH:MM:SS (12/24 hr) YY-MM-DD-dd I2C, 2-Wire Serial 4.5V ~ 5.5V 2V ~ 3.5V 1.5mA @ 4.5V ~ 5.5V -40°C ~ 85°C Surface Mount - - 8-SOIC
    ISL12026AIBZ-T

    ISL12026AIBZ-T

    IC RTC CLK/CALENDAR I2C 8SOIC

    Renesas Electronics Corporation

    2,226
    RFQ
    ISL12026AIBZ-T

    Datasheet

    - 8-SOIC (0.154", 3.90mm 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 2.7V ~ 5.5V 1.8V ~ 5.5V 10µA ~ 20µA @ 2.7V ~ 5.5V -40°C ~ 85°C Surface Mount - - 8-SOIC
    RX-8803SAUC0 PURE SN

    RX-8803SAUC0 PURE SN

    IC RTC CLK/CALENDAR I2C 14SOP

    EPSON

    4,609
    RFQ
    RX-8803SAUC0 PURE SN

    Datasheet

    - - Tape & Reel (TR) Active - - - - - - - - - - - - - - -
    RX-8803SA UB0 PURE SN

    RX-8803SA UB0 PURE SN

    IC RTC CLK/CALENDAR I2C 14SOP

    EPSON

    2,365
    RFQ
    RX-8803SA UB0 PURE SN

    Datasheet

    - - Tape & Reel (TR) Active - - - - - - - - - - - - - - -
    RX-4803SAUB0 PURE SN

    RX-4803SAUB0 PURE SN

    IC RTC CLK/CALENDAR SPI 12VSOJ

    EPSON

    5,000
    RFQ
    RX-4803SAUB0 PURE SN

    Datasheet

    - - Tape & Reel (TR) Active - - - - - - - - - - - - - - -
    RX-8025SAAA0 PURE SN

    RX-8025SAAA0 PURE SN

    IC RTC CLK/CALENDAR I2C 14SOP

    EPSON

    3,900
    RFQ
    RX-8025SAAA0 PURE SN

    Datasheet

    RX-8025SA 14-SOIC (0.197", 5.00mm Width) Tape & Reel (TR) Active - Clock/Calendar Alarm - HH:MM:SS YY-MM-DD-dd I2C 1.7V ~ 5.5V - 1.2µA ~ 1.8µA @ 3V ~ 5V -40°C ~ 85°C Surface Mount - - 14-SOP
    RX-8025SAAC0 PURE SN

    RX-8025SAAC0 PURE SN

    IC RTC CLK/CALENDAR I2C 14SOP

    EPSON

    2,503
    RFQ
    RX-8025SAAC0 PURE SN

    Datasheet

    - - Tape & Reel (TR) Active - - - - - - - - - - - - - - -
    DS1307ZN

    DS1307ZN

    IC RTC CLK/CALENDAR I2C 8SOIC

    Analog Devices Inc./Maxim Integrated

    4,816
    RFQ
    DS1307ZN

    Datasheet

    - 8-SOIC (0.154", 3.90mm Width) Tube Obsolete Not Verified Clock/Calendar Leap Year, NVSRAM, Square Wave Output 56B HH:MM:SS (12/24 hr) YY-MM-DD-dd I2C, 2-Wire Serial 4.5V ~ 5.5V 2V ~ 3.5V 200µA @ 5V -40°C ~ 85°C Surface Mount - - 8-SOIC
    DS1302N

    DS1302N

    IC RTC CLK/CALENDAR SER 8DIP

    Analog Devices Inc./Maxim Integrated

    2,569
    RFQ
    DS1302N

    Datasheet

    - 8-DIP (0.300", 7.62mm) Tube Obsolete Not Verified Clock/Calendar Leap Year, NVSRAM, Trickle-Charger 31B HH:MM:SS (12/24 hr) YY-MM-DD-dd 3-Wire Serial 2V ~ 5.5V 2V ~ 5.5V 0.3µA ~ 1µA @ 2V ~ 5V -40°C ~ 85°C Through Hole - - 8-PDIP
    DS1302SN

    DS1302SN

    IC RTC CLK/CALENDAR SER 8SOIC

    Analog Devices Inc./Maxim Integrated

    2,397
    RFQ
    DS1302SN

    Datasheet

    - 8-SOIC (0.209", 5.30mm Width) Tube Obsolete Not Verified Clock/Calendar Leap Year, NVSRAM, Trickle-Charger 31B HH:MM:SS (12/24 hr) YY-MM-DD-dd 3-Wire Serial 2V ~ 5.5V 2V ~ 5.5V 0.3µA ~ 1µA @ 2V ~ 5V -40°C ~ 85°C Surface Mount - - 8-SOIC
    DS1307N

    DS1307N

    IC RTC CLOCK/CALENDAR I2C 8DIP

    Analog Devices Inc./Maxim Integrated

    2,278
    RFQ
    DS1307N

    Datasheet

    - 8-DIP (0.300", 7.62mm) Tube Obsolete Not Verified Clock/Calendar Leap Year, NVSRAM, Square Wave Output 56B HH:MM:SS (12/24 hr) YY-MM-DD-dd I2C, 2-Wire Serial 4.5V ~ 5.5V 2V ~ 3.5V 200µA @ 5V -40°C ~ 85°C Through Hole - - 8-PDIP
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