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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
RTC-72423A: PURE SN

RTC-72423A: PURE SN

IC RTC CLK/CALENDAR PAR 24SOP

EPSON

4,788
RTC-72423A: PURE SN

Datasheet

RTC-72423 24-SOIC (0.311", 7.90mm Width) Bulk Obsolete Not Verified Clock/Calendar - HH:MM:SS (12/24 hr) - Leap Year Parallel 4.5V ~ 5.5V - 5µA ~ 10µA @ 2V ~ 5V -40°C ~ 85°C 24-SOP Surface Mount - -
RTC-72423B: PURE SN

RTC-72423B: PURE SN

IC RTC CLK/CALENDAR PAR 24SOP

EPSON

2,074
RTC-72423B: PURE SN

Datasheet

RTC-72423 24-SOIC (0.311", 7.90mm Width) Bulk Obsolete Not Verified Clock/Calendar - HH:MM:SS (12/24 hr) - Leap Year Parallel 4.5V ~ 5.5V - 5µA ~ 10µA @ 2V ~ 5V -40°C ~ 85°C 24-SOP Surface Mount - -
RTC-7301SF:B ROHS

RTC-7301SF:B ROHS

IC RTC CLK/CALENDAR PAR 24SSOP

EPSON

3,005
RTC-7301SF:B ROHS

Datasheet

- 24-SOP (0.213", 5.40mm Width) Bulk Obsolete Not Verified Clock/Calendar - - - Alarm Parallel 2.4V ~ 5.5V - 1µA ~ 2µA @ 3V ~ 5V -40°C ~ 85°C 24-SSOP Surface Mount - -
RTC-7301SF:B0 ROHS

RTC-7301SF:B0 ROHS

IC RTC CLK/CALENDAR PAR 24SSOP

EPSON

3,803
RTC-7301SF:B0 ROHS

Datasheet

- 24-SOP (0.213", 5.40mm Width) Tape & Reel (TR) Obsolete Not Verified Clock/Calendar - - - Alarm Parallel 2.4V ~ 5.5V - 1µA ~ 2µA @ 3V ~ 5V -40°C ~ 85°C 24-SSOP Surface Mount - -
RX-4045SA:AA

RX-4045SA:AA

IC RTC CLK/CALENDAR SPI 14SOP

EPSON

1,003
RX-4045SA:AA

Datasheet

RX-4045SA 14-SOIC (0.197", 5.00mm Width) Tube Obsolete Not Verified Clock/Calendar - HH:MM:SS (12/24 hr) YY-MM-DD-dd Alarm, Leap Year SPI 1.7V ~ 5.5V - 1.2µA ~ 1.8µA @ 3V ~ 5V -40°C ~ 85°C 14-SOP Surface Mount - -
RX-4571LC:B PURE SN

RX-4571LC:B PURE SN

IC RTC CLK/CALENDAR SER 12VSOJ

EPSON

4,605
RX-4571LC:B PURE SN

Datasheet

RX-4571LC 12-TFSOJ (0.094", 2.40mm Width) Strip Active Not Verified Clock/Calendar - - - Alarm, Leap Year 3-Wire Serial 1.6V ~ 5.5V - 0.95µA ~ 1µA @ 3V ~ 5V -40°C ~ 85°C 12-VSOJ Surface Mount - -
RX-4574LC:B PURE SN

RX-4574LC:B PURE SN

IC RTC CLK/CALENDAR SER 12VSOJ

EPSON

3,015
RX-4574LC:B PURE SN

Datasheet

RX-4574LC 12-TFSOJ (0.094", 2.40mm Width) Strip Obsolete Not Verified Clock/Calendar - - - Alarm 3-Wire Serial 1.6V ~ 5.5V - 0.7µA ~ 0.9µA @ 3V ~ 5V -40°C ~ 85°C 12-VSOJ Surface Mount - -
RX-4575LC:B

RX-4575LC:B

IC RTC CLK/CALENDAR SER 12VSOJ

EPSON

4,263
RX-4575LC:B

Datasheet

RX-4575LC 12-TFSOJ (0.094", 2.40mm Width) Strip Obsolete Not Verified Clock/Calendar - - - Alarm 3-Wire Serial 1.6V ~ 5.5V - 0.7µA ~ 0.9µA @ 3V ~ 5V -40°C ~ 85°C 12-VSOJ Surface Mount - -
RX-4801SA:UB PURE SN

RX-4801SA:UB PURE SN

IC RTC CLK/CALENDAR SER 14SOP

EPSON

3,268
RX-4801SA:UB PURE SN

Datasheet

RX-4801SA 14-SOIC (0.197", 5.00mm Width) Bulk Obsolete Not Verified Clock/Calendar - - - Alarm 4-Wire Serial 1.6V ~ 5.5V - 2.1µA ~ 3.4µA @ 3V ~ 5V -40°C ~ 85°C 14-SOP Surface Mount - -
RX-8581JE:B I2C-BUS

RX-8581JE:B I2C-BUS

IC RTC CLK/CALENDAR I2C 20VSOJ

EPSON

2,554
RX-8581JE:B I2C-BUS

Datasheet

RX-8581JE 20-LSSOJ (0.213", 5.40mm Width) Strip Obsolete Not Verified Clock/Calendar - - - Alarm I2C 1.8V ~ 5.5V - 0.8µA ~ 1.2µA @ 3V ~ 5V -40°C ~ 85°C 20-VSOJ Surface Mount - -
RX-8581NB:B  I2C-BUS

RX-8581NB:B I2C-BUS

IC RTC CLK/CALENDAR I2C 22SON

EPSON

1,965
RX-8581NB:B  I2C-BUS

Datasheet

RX-8581NB 22-LFDFN Strip Obsolete Not Verified Clock/Calendar - - - Alarm I2C 1.8V ~ 5.5V - 0.8µA ~ 1.2µA @ 3V ~ 5V -40°C ~ 85°C 22-SON (6.3x4.8) Surface Mount - -
RX-8581NB:B PURE SN

RX-8581NB:B PURE SN

IC RTC CLK/CALENDAR I2C 22SON

EPSON

1,164
RX-8581NB:B PURE SN

Datasheet

RX-8581NB 22-LFDFN Strip Obsolete Not Verified Clock/Calendar - - - Alarm I2C 1.8V ~ 5.5V - 0.8µA ~ 1.2µA @ 3V ~ 5V -40°C ~ 85°C 22-SON (6.3x4.8) Surface Mount - -
RX-8731LC:B

RX-8731LC:B

IC RTC CLK/CALENDAR I2C 12VSOJ

EPSON

2,926
RX-8731LC:B

Datasheet

RX-8731LC 12-TFSOJ (0.094", 2.40mm Width) Bulk Obsolete Not Verified Clock/Calendar 80b HH:MM:SS (24 hr) YY-MM-DD-dd Alarm, EEPROM, Leap Year, Unique ID I2C 1.7V ~ 5.5V - 1.4µA ~ 1.5µA @ 3V ~ 5V -40°C ~ 85°C 12-VSOJ Surface Mount - -
RX-8731LC:B PURE SN

RX-8731LC:B PURE SN

IC RTC CLK/CALENDAR I2C 12VSOJ

EPSON

2,138
RX-8731LC:B PURE SN

Datasheet

RX-8731LC 12-TFSOJ (0.094", 2.40mm Width) Bulk Active Not Verified Clock/Calendar 80b HH:MM:SS (24 hr) YY-MM-DD-dd Alarm, EEPROM, Leap Year, Unique ID I2C 1.7V ~ 5.5V - 1.4µA ~ 1.5µA @ 3V ~ 5V -40°C ~ 85°C 12-VSOJ Surface Mount - -
RX-8731LC:B0 PURE SN

RX-8731LC:B0 PURE SN

IC RTC CLK/CALENDAR I2C 12VSOJ

EPSON

4,911
RX-8731LC:B0 PURE SN

Datasheet

RX-8731LC 12-TFSOJ (0.094", 2.40mm Width) Tape & Reel (TR) Active Not Verified Clock/Calendar 80b HH:MM:SS (24 hr) YY-MM-DD-dd Alarm, EEPROM, Leap Year, Unique ID I2C 1.7V ~ 5.5V - 1.4µA ~ 1.5µA @ 3V ~ 5V -40°C ~ 85°C 12-VSOJ Surface Mount - -
RX-8801SA: UA PURE SN

RX-8801SA: UA PURE SN

IC RTC CLK/CALENDAR I2C 14SOP

EPSON

1,143
RX-8801SA: UA PURE SN

Datasheet

RX-8801SA 14-SOIC (0.197", 5.00mm Width) Tube Obsolete Not Verified Clock/Calendar - - - Alarm I2C 1.6V ~ 5.5V - 2.1µA ~ 3.4µA @ 3V ~ 5V -40°C ~ 85°C 14-SOP Surface Mount - -
RX-8801SA: UB PURE SN

RX-8801SA: UB PURE SN

IC RTC CLK/CALENDAR I2C 14SOP

EPSON

1,984
RX-8801SA: UB PURE SN

Datasheet

RX-8801SA 14-SOIC (0.197", 5.00mm Width) Tube Obsolete Not Verified Clock/Calendar - - - Alarm I2C 1.6V ~ 5.5V - 2.1µA ~ 3.4µA @ 3V ~ 5V -40°C ~ 85°C 14-SOP Surface Mount - -
MCP7940NT-E/SNVAO

MCP7940NT-E/SNVAO

IC RTC CLK/CALENDAR I2C 8SOIC

Microchip Technology

1,490
MCP7940NT-E/SNVAO

Datasheet

- 8-SOIC (0.154", 3.90mm Width) Tape & Reel (TR) 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 1.3V ~ 5.5V 1.2µA @ 3.3V -40°C ~ 125°C 8-SOIC Surface Mount AEC-Q100 Automotive
MAX31342EWA+

MAX31342EWA+

IC RTC CLK/CALENDAR I2C 8WLP

Analog Devices Inc./Maxim Integrated

4,498
MAX31342EWA+

Datasheet

- 8-WFBGA, WLBGA Strip Active Not Verified Clock/Calendar - HH:MM:SS (12/24 hr) YY-MM-DD-dd Alarm, Leap Year, Square Wave Output I2C 1.6V ~ 3.6V - 0.33µA @ 3V -40°C ~ 85°C 8-WLP (.97x1.97) Surface Mount - -
DS1747WP-C2+

DS1747WP-C2+

IC REAL TIME CLOCK

Analog Devices Inc./Maxim Integrated

1,022
DS1747WP-C2+

Datasheet

* - Bulk Obsolete Not Verified - - - - - - - - - - - - - -
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