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RTCs

Compare Image Name Manufacturer Pricing(USD) Quantity Weight(Kg) Size(LxWxH) Datasheet Factory Lead Time Mount Packaging Published Series Pbfree Code Part Status Moisture Sensitivity Level (MSL) Number of Terminations Termination ECCN Code Max Operating Temperature Min Operating Temperature Operating Supply Voltage Length RoHS Status Lead Free Contact Plating Radiation Hardening Number of Pins Additional Feature Package / Case Interface Max Supply Voltage REACH SVHC Reach Compliance Code Min Supply Voltage Frequency Height Width Mounting Type Weight Operating Temperature Technology Operating Supply Current Height Seated (Max) HTS Code Type JESD-609 Code Terminal Finish Terminal Position Terminal Form Peak Reflow Temperature (Cel) Supply Voltage Time@Peak Reflow Temperature-Max (s) Base Part Number Pin Count Temperature Grade Surface Mount Terminal Pitch JESD-30 Code Supply Voltage-Min (Vsup) Operating Temperature (Max) Operating Temperature (Min) Subcategory Qualification Status Power Supplies Supply Voltage-Max (Vsup) Number of Outputs Feature Supplier Device Package Number of Terminals Logic Function Access Time Memory Size Function Number of Bits Voltage - Supply Time Format External Data Bus Width uPs/uCs/Peripheral ICs Type Clock Frequency Time-Min Interrupt Capability Volatile Information Access Method Number of Timers Date Format Current - Timekeeping (Max) Voltage - Supply, Battery
DS1742-70+ DS1742-70+ Maxim Integrated 0.0000
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Min: 1

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0.00000000 download Tube 2005 yes Obsolete 1 (Unlimited) 24 EAR99 37.595mm ROHS3 Compliant Lead Free 24-DIP Module (0.600, 15.24mm) Parallel 15.24mm Through Hole 0°C~70°C CMOS 8.51mm 8542.39.00.01 Clock/Calendar e3 Matte Tin (Sn) DUAL 260 5V NOT SPECIFIED DS1742 24 NO 2.54mm R-PDIP-P24 Timer or RTC Not Qualified 5V Leap Year, NVSRAM, Y2K 2KB 4.5V~5.5V HH:MM:SS (24 hr) 8 0.032MHz SECONDS N NO YY-MM-DD-dd 3mA @ 5V
DS1743-100IND DS1743-100IND Maxim Integrated 0.0000
RFQ

Min: 1

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0.00000000
DS1251YP-70 DS1251YP-70 Maxim Integrated 0.0000
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0.00000000 download Surface Mount Tube 2005 Obsolete 3 (168 Hours) 34 EAR99 5V Non-RoHS Compliant Contains Lead No 34 34-PowerCap™ Module Parallel 70GHz Surface Mount 0°C~70°C CMOS 8542.39.00.01 Phantom Time Chip e0 TIN LEAD DUAL 5V DS1251 34 Timer or RTC 5V Leap Year, NVSRAM Clock 70 ns 512KB 4.5V~5.5V HH:MM:SS:hh (12/24 hr) 8 1/100SECOND N NO YY-MM-DD-dd 10mA @ 5V 3V
DS1251YP-70IND DS1251YP-70IND Rochester Electronics 0.0000
RFQ

Min: 1

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0.00000000 download Tube no Obsolete 3 (168 Hours) 34 Non-RoHS Compliant USE DS9034PCX TO ORDER POWERCAP 34-PowerCap™ Module Parallel unknown Surface Mount -40°C~85°C Phantom Time Chip e0 TIN LEAD DUAL 225 5V 30 34 YES R-XDMA-U34 COMMERCIAL Leap Year, NVSRAM 512kb 4.5V~5.5V HH:MM:SS:hh (12/24 hr) 8 YY-MM-DD-dd 10mA @ 5V 3V
ISL12027AIB27Z ISL12027AIB27Z Rochester Electronics 0.0000
RFQ

Min: 1

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0.00000000 download Tube Obsolete 1 (Unlimited) ROHS3 Compliant 8-SOIC (0.154, 3.90mm Width) I2C, 2-Wire Serial Surface Mount -40°C~85°C Clock/Calendar Alarm, Leap Year, Supervisor, Watchdog Timer 8-SOIC 2.7V~5.5V HH:MM:SS (12/24 hr) YY-MM-DD-dd 10μA~20μA @ 2.7V~5.5V 1.8V~5.5V
PCF2127T/1,512 PCF2127T/1,512 NXP Semiconductors 0.0000
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0.00000000
DS1743-100 IND DS1743-100 IND Maxim Integrated 0.0000
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Min: 1

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0.00000000 download Tube 2012 Obsolete 1 (Unlimited) 28 EAR99 38.225mm Non-RoHS Compliant 28-DIP Module (0.600, 15.24mm) Parallel not_compliant 15.24mm Through Hole -40°C~85°C CMOS 10.67mm 8473.30.11.80 Clock/Calendar e0 Tin/Lead (Sn/Pb) DUAL NOT SPECIFIED 5V NOT SPECIFIED DS1743 28 NO 2.54mm R-XDMA-P28 Timer or RTC Not Qualified 5V Leap Year, NVSRAM, Y2K 8KB 4.5V~5.5V HH:MM:SS (24 hr) 8 0.032MHz SECONDS N NO YY-MM-DD-dd 3mA @ 5V
X1227S8-4.5A X1227S8-4.5A Renesas Electronics America 0.0000
RFQ

Min: 1

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0.00000000 download Tube Obsolete 1 (Unlimited) Non-RoHS Compliant 8-SOIC (0.154, 3.90mm Width) I2C, 2-Wire Serial Surface Mount 0°C~70°C Clock/Calendar X1227 Alarm, Leap Year, Supervisor, Watchdog Timer 4.5V~5.5V HH:MM:SS (12/24 hr) YY-MM-DD-dd 10μA~20μA @ 2.7V~5V 1.8V~5.5V
DS1501YEN+ DS1501YEN+ Maxim Integrated 0.0000
RFQ

Min: 1

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0.00000000 download Tray 2002 yes Obsolete 3 (168 Hours) 28 EAR99 11.8mm ROHS3 Compliant Lead Free 28 28-TSSOP (0.465, 11.80mm Width) Parallel 8mm Surface Mount -40°C~85°C CMOS 1.2mm 8473.30.11.80 Clock/Calendar e3 Matte Tin (Sn) DUAL 260 5V 30 DS1501 28 YES 0.55mm Timers or RTCs Not Qualified 5V Alarm, Leap Year, NVSRAM, Square Wave Output, Watchdog Timer, Y2K 256B 4.5V~5.5V HH:MM:SS (24 hr) 8 0.032MHz SECONDS Y YES 1 YY-MM-DD-dd 5mA @ 4.5V~5.5V 2.5V~3.7V
PCA8565TS/S440/1,5 PCA8565TS/S440/1,5 NXP Semiconductors / Freescale 0.0000
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Min: 1

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0.00000000 download Non-RoHS Compliant
PCA8565AU/5BA/1,01 PCA8565AU/5BA/1,01 NXP Semiconductors / Freescale 0.0000
RFQ

Min: 1

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0.00000000 download Non-RoHS Compliant
X1228V14IZ X1228V14IZ Renesas Electronics America 0.0000
RFQ

Min: 1

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0.00000000 download Tube Obsolete 1 (Unlimited) ROHS3 Compliant 14-TSSOP (0.173, 4.40mm Width) I2C, 2-Wire Serial Surface Mount -40°C~85°C Clock/Calendar e3 MATTE TIN NOT SPECIFIED NOT SPECIFIED X1228 Alarm, Leap Year, Supervisor, Watchdog Timer 2.7V~5.5V HH:MM:SS (12/24 hr) YY-MM-DD-dd 10μA~20μA @ 2.7V~5V 1.8V~5.5V
IDT1338-18DCGI IDT1338-18DCGI Integrated Device Technology (IDT) 0.0000
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0.00000000 download Surface Mount 2010 85°C -40°C 5mm RoHS Compliant 8 SOIC 2-Wire, I2C, Serial 5.5V 1.4V 1.5mm 4mm 56B HH:MM:SS (12/24 hr) YY-MM-DD-dd
RTC-8564JE:ROHS RTC-8564JE:ROHS EPSON 0.0000
RFQ

Min: 1

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0.00000000 download 15 Weeks Surface Mount Tube RTC-8564JE Active 1 (Unlimited) 85°C -40°C ROHS3 Compliant 20 20-LSSOJ (0.213, 5.40mm Width) I2C, 2-Wire Serial Surface Mount -40°C~85°C Clock/Calendar Alarm, Y2K 20-VSOJ 1.8V~5.5V HH:MM:SS YY-MM-DD-dd 0.7μA~0.8μA @ 3V~5V
PT7C4337WE PT7C4337WE Diodes Incorporated 0.0000
RFQ

Min: 1

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0.00000000 download 8 Weeks Surface Mount Tube 2013 Last Time Buy 1 (Unlimited) 8 EAR99 4.9mm RoHS Compliant No 8 8-SOIC (0.154, 3.90mm Width) I2C, 2-Wire Serial 3.9mm Surface Mount -40°C~85°C CMOS 1.75mm Clock/Calendar DUAL 3.3V 1.27mm Timer or RTC 2/5V Alarm, Leap Year, Square Wave Output Clock 1.8V~5.5V HH:MM:SS (12/24 hr) 0.032MHz SECONDS Y YES I2C 1 YY-MM-DD-dd 0.8μA @ 1.3V~1.8V
PT7C4302AZEEX PT7C4302AZEEX Diodes Incorporated 0.0000
RFQ

Min: 1

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0.00000000 20 Weeks Tape & Reel (TR) Active 1 (Unlimited) ROHS3 Compliant 8-WFDFN Exposed Pad 3-Wire Serial Surface Mount -40°C~85°C TA Clock/Calendar Leap Year, NVSRAM, Square Wave Output, Trickle-Charger 31B 1.2V~5.5V HH:MM:SS (12/24 hr) YY-MM-DD-dd 25.3μA~81μA @ 2V~5V 1.2V~5.5V
R2045S-E2-FE R2045S-E2-FE Ricoh Electronic Devices Company 0.0000
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Min: 1

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0.00000000 download 9 Weeks Tape & Reel (TR) Active 1 (Unlimited) RoHS Compliant TIMER, REAL TIME CLOCK
PCF8563TS PCF8563TS NXP Semiconductors 0.0000
RFQ

Min: 1

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0.00000000 download Tape and Reel Active Supplier Unconfirmed 8 Clock/Calendar/Alarm/Timer/Interrupt HH:MM:SS DW:DM:M:Y
X1227S8I-2.7AT1 X1227S8I-2.7AT1 Intersil Corporation 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 1 EAR99 4.9022mm Non-RoHS Compliant not_compliant 3.9116mm CMOS 1.7272mm 8542.39.00.01 e0 Tin/Lead (Sn/Pb) DUAL GULL WING 240 5V 40 8 INDUSTRIAL YES 1.27mm R-PDSO-G8 2.7V 85°C -40°C Timer or RTC Not Qualified 3/5V 5.5V 8 TIMER, REAL TIME CLOCK 0.032MHz SECONDS Y NO I2C 1
X1288V14Z-2.7A X1288V14Z-2.7A Renesas Electronics America 0.0000
RFQ

Min: 1

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0.00000000 download Tube Obsolete 5 (48 Hours) ROHS3 Compliant 14-TSSOP (0.173, 4.40mm Width) I2C, 2-Wire Serial Surface Mount -40°C~85°C Clock/Calendar e3 Matte Tin (Sn) NOT SPECIFIED NOT SPECIFIED X1288 Alarm, Leap Year, Supervisor, Watchdog Timer 2.7V~5.5V HH:MM:SS:hh (12/24 hr) YY-MM-DD-dd 10μA~20μA @ 2.7V~5V 1.8V~5.5V
ISL12027AIV27Z-T ISL12027AIV27Z-T Intersil (Renesas Electronics America) 0.0000
RFQ

Min: 1

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0.00000000 download Surface Mount 2010 Active 1 8 EAR99 85°C -40°C 3.3V 4.4mm RoHS Compliant No 8 TSSOP 2-Wire, I2C, Serial 3mm CMOS 1.2mm e3 Matte Tin (Sn) - annealed DUAL 260 3.3V INDUSTRIAL 0.65mm Timer or RTC 3/5V 5.5V Clock HH:MM:SS (12/24 hr) 0.032MHz SECONDS Y NO I2C YY-MM-DD-dd
BQ4285EP BQ4285EP Texas Instruments 0.0000
RFQ

Min: 1

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0.00000000 download Through Hole Tube yes Obsolete 2 (1 Year) 24 EAR99 5V 31.75mm ROHS3 Compliant Lead Free Tin No 24 24-DIP (0.600, 15.24mm) Parallel Through Hole 0°C~70°C CMOS 5.08mm 8542.39.00.01 Clock/Calendar e3 DUAL 5V BQ4285 24 2.54mm Timer or RTC 5V Alarm, Daylight Savings, Leap Year, NVSRAM, Square Wave Output Clock 114B 4.5V~5.5V HH:MM:SS (12/24 hr) 8 0.032MHz SECONDS Y YES 1 YY-MM-DD-dd 300μA @ 5V 2.5V~4V
ISL12059IBZ-T ISL12059IBZ-T Intersil Corporation 0.0000
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Min: 1

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0.00000000 2 EAR99 4.9mm RoHS Compliant compliant 3.9mm CMOS 1.75mm 8542.39.00.01 e3 Matte Tin (Sn) - annealed DUAL GULL WING 260 3V NOT SPECIFIED 8 INDUSTRIAL YES 1.27mm R-PDSO-G8 1.8V 85°C -40°C Timer or RTC Not Qualified 2/3.3V 3.6V 8 TIMER, REAL TIME CLOCK 0.032MHz SECONDS N NO I2C
RV-3029-C3-32.768KHZ-OPTION-A-TB-QA RV-3029-C3-32.768KHZ-OPTION-A-TB-QA Micro Crystal 0.0000
RFQ

Min: 1

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0.00000000 download 2 Weeks Tape & Reel (TR) Automotive, AEC-Q200 Active 1 (Unlimited) ROHS3 Compliant 10-VCDFN I2C, 2-Wire Serial Surface Mount -40°C~125°C TA Clock/Calendar Gold Flash (Au) 260 40 Alarm, NVRAM, RAM, Trickle Charger 2B 8B 1.3V~5.5V HH:MM:SS YY-MM-DD-dd 1μA @ 3V
DS3231MZ/V+ DS3231MZ/V+ Maxim Integrated 0.0000
RFQ

Min: 1

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0.00000000 download 6 Weeks Tube 2012 Automotive, AEC-Q100 yes Not For New Designs 1 (Unlimited) 8 EAR99 3.3V 4.9mm ROHS3 Compliant No 8 8-SOIC (0.154, 3.90mm Width) I2C, 2-Wire Serial 3.9mm Surface Mount 540.001716mg -40°C~85°C CMOS 300μA 1.75mm Clock/Calendar e3 Matte Tin (Sn) DUAL 260 3.3V 30 DS3231 8 YES 1.27mm Timer or RTC Alarm, Leap Year, Square Wave Output Clock 2.3V~5.5V HH:MM:SS (12/24 hr) SECONDS Y NO I2C 1 YY-MM-DD-dd 130μA~200μA @ 3.63V~5.5V 2.3V~5.5V
ISL12021CVZ ISL12021CVZ Intersil 0.0000
RFQ

Min: 1

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0.00000000
RTC-72421B RTC-72421B Toyocom 0.0000
RFQ

Min: 1

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0.00000000 download Through Hole Bulk 2010 Through Hole 70°C -10°C 23.1mm RoHS Compliant Contains Lead 18 DIP Parallel 5.5V Unknown 4.5V 1MHz 4.2mm 6.3mm 5 8 HH:MM:SS (12/24 hr) YY-MM-DD-dd
DS17287-5+ DS17287-5+ Maxim Integrated 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download 14 Weeks Tube 2000 yes Active 1 (Unlimited) 24 EAR99 33.782mm ROHS3 Compliant Lead Free 24 24-DIP Module (0.600, 15.24mm) Parallel not_compliant Through Hole 0°C~70°C CMOS 9.398mm 8542.39.00.01 Clock/Calendar e3 Matte Tin (Sn) DUAL NOT SPECIFIED 5V NOT SPECIFIED DS17287 24 NO 2.54mm Timer or RTC Not Qualified 5V 11 Alarm, Daylight Savings, Leap Year, NVSRAM, Square Wave Output 2KB 4.5V~5.5V HH:MM:SS (12/24 hr) 8 0.032MHz SECONDS Y YES 1 YY-MM-DD-dd 3mA @ 4.5V~5.5V 2.5V~3.7V
RTC-72423B RTC-72423B Toyocom 0.0000
RFQ

Min: 1

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0.00000000 download Surface Mount Bulk SMD/SMT 85°C -40°C 16.3mm RoHS Compliant Contains Lead 24 SOIC Parallel 5.5V Unknown 4.5V 1MHz 2.8mm 7.9mm 5 8 HH:MM:SS (12/24 hr) YY-MM-DD-dd
DS1746W-120 DS1746W-120 Maxim Integrated 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download Through Hole Tube 2005 yes Obsolete 1 (Unlimited) 32 EAR99 3.3V 44.2mm Non-RoHS Compliant Contains Lead Tin No 32 32-DIP Module (0.600, 15.24mm) Parallel Unknown 10.92mm 18.8mm Through Hole 0°C~70°C CMOS 8473.30.11.80 Clock/Calendar e3 DUAL 3.3V DS1746 32 2.54mm Timers or RTCs Leap Year, NVSRAM, Y2K Clock 128KB 2.97V~3.63V HH:MM:SS (24 hr) SECONDS N NO YY-MM-DD-dd 2mA @ 3.3V
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