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- Clock/Timing - Real Time Clocks
| Image | Part # | Manufacturer | Description | Availability | Pricing | Quantity | Mounting Type | Package / Case | Surface Mount | Supplier Device Package | Operating Temperature | Packaging | JESD-609 Code | Pbfree Code | Part Status | Moisture Sensitivity Level (MSL) | Number of Terminations | Type | Terminal Finish | Additional Feature | Voltage - Supply | Terminal Position | Peak Reflow Temperature (Cel) | Number of Functions | Supply Voltage | Terminal Pitch | Reach Compliance Code | Time@Peak Reflow Temperature-Max (s) | Pin Count | JESD-30 Code | Qualification Status | Supply Voltage-Max (Vsup) | Supply Voltage-Min (Vsup) | Number of Channels | Interface | Memory Size | Adjustable Threshold | Clock Frequency | External Data Bus Width | Number of Timers | Time Format | Date Format | Current - Timekeeping (Max) | Voltage - Supply, Battery | Information Access Method | Features | Height Seated (Max) | Length | Width | RoHS Status |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
![]() | Mfr. Part #DS1557WP-120Twicea Part #699-476-DS1557WP-120 | Rochester Electronics, LLC |
NV, Y2K TIMEKEEPING RAM
Datasheet
Compare
| Min.:1 Mult.:1 | Surface Mount | 34-PowerCap™ Module | YES | - | 0°C~70°C | Tube | e0 | no | Obsolete | 3 (168 Hours) | 34 | Clock/Calendar | TIN LEAD | - | 2.97V~3.63V | DUAL | 240 | - | 3.3V | - | - | NOT SPECIFIED | 34 | R-XDMA-U34 | COMMERCIAL | - | - | - | Parallel | 512KB | - | 0.032MHz | 8 | - | HH:MM:SS (24 hr) | YY-MM-DD-dd | 4mA @ 3.3V | 3V | - | Alarm, Leap Year, NVSRAM, Watchdog Timer, Y2K | - | - | - | Non-RoHS Compliant | ||
| DS1557WP-120 | ||||||||||||||||||||||||||||||||||||||||||||||||||
![]() | Mfr. Part #DS1744P-70Twicea Part #699-476-DS1744P-70 | Rochester Electronics, LLC |
Y2K, NV TIMEKEEPING RAM
Datasheet
Compare
| Min.:1 Mult.:1 | Surface Mount | 34-PowerCap™ Module | YES | - | 0°C~70°C | Tube | e0 | no | Obsolete | 3 (168 Hours) | 28 | Clock/Calendar | TIN LEAD | A POWERCAP MODULE CONTAINING CRYSTAL AND BATTERY REQUIRED | 4.5V~5.5V | DUAL | 240 | - | 5V | - | - | NOT SPECIFIED | 28 | R-XDMA-U28 | COMMERCIAL | - | - | - | Parallel | 32KB | - | 0.032MHz | 8 | - | HH:MM:SS (24 hr) | YY-MM-DD-dd | 4mA @ 5V | 3V | - | Leap Year, NVSRAM, Y2K | - | - | - | Non-RoHS Compliant | ||
| DS1744P-70 | ||||||||||||||||||||||||||||||||||||||||||||||||||
![]() | Mfr. Part #DS1248WP-120Twicea Part #699-476-DS1248WP-120 | Rochester Electronics, LLC |
1024K NV SRAM & PHANTOM CLOCK
Datasheet
Compare
| Min.:1 Mult.:1 | Surface Mount | 34-PowerCap™ Module | YES | - | 0°C~70°C | Tube | e0 | no | Obsolete | 3 (168 Hours) | 34 | Phantom Time Chip | TIN LEAD | - | 2.97V~3.63V | DUAL | 240 | - | 3.3V | - | unknown | NOT SPECIFIED | 34 | R-XDMA-U34 | COMMERCIAL | - | - | - | Parallel | 128KB | - | 8.3MHz | 8 | - | HH:MM:SS:hh (12/24 hr) | YY-MM-DD-dd | 7mA @ 3.3V | 3V | - | NVSRAM | - | - | - | Non-RoHS Compliant | ||
| DS1248WP-120 | ||||||||||||||||||||||||||||||||||||||||||||||||||
![]() | Mfr. Part #DS1553WP-150Twicea Part #699-476-DS1553WP-150 | Rochester Electronics, LLC |
NV, Y2K TIMEKEEPING RAM
Datasheet
Compare
| Min.:1 Mult.:1 | Surface Mount | 34-PowerCap™ Module | YES | - | 0°C~70°C | Tube | e0 | no | Obsolete | 3 (168 Hours) | 34 | Clock/Calendar | TIN LEAD | A POWERCAP MODULE CONTAINING CRYSTAL AND BATTERY REQUIRED | 2.97V~3.63V | DUAL | 240 | - | 3.3V | - | - | NOT SPECIFIED | 34 | R-XDMA-U34 | COMMERCIAL | - | - | - | Parallel | 8KB | - | 0.032MHz | 8 | - | HH:MM:SS (24 hr) | YY-MM-DD-dd | 2mA @ 3.3V | 3V | - | Alarm, Leap Year, NVSRAM, Watchdog Timer, Y2K | - | - | - | Non-RoHS Compliant | ||
| DS1553WP-150 | ||||||||||||||||||||||||||||||||||||||||||||||||||
![]() | Mfr. Part #DS17285S-3NTTwicea Part #699-476-DS17285S-3NT | Rochester Electronics, LLC |
DS17285 REAL-TIME CLOCK
Datasheet
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| Min.:1 Mult.:1 | Surface Mount | 24-SOIC (0.295, 7.50mm Width) | YES | - | -40°C~85°C | Tape & Reel (TR) | e0 | no | Obsolete | 3 (168 Hours) | 24 | Clock/Calendar | TIN LEAD | - | 2.7V~3.7V | DUAL | 245 | - | 3V | 1.27mm | - | NOT SPECIFIED | 24 | R-PDSO-G24 | COMMERCIAL | - | - | - | Parallel | 2KB | - | 0.032MHz | 8 | 1 | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | 2mA @ 2.7V~3.7V | 2.5V~3.7V | - | Alarm, Daylight Savings, Leap Year, NVSRAM, Square Wave Output | 2.67mm | 17.9mm | 7.5mm | Non-RoHS Compliant | ||
| DS17285S-3NT | ||||||||||||||||||||||||||||||||||||||||||||||||||
![]() | Mfr. Part #DS1553W-120Twicea Part #699-476-DS1553W-120 | Rochester Electronics, LLC |
NV, Y2K TIMEKEEPING RAM
Datasheet
Compare
| Min.:1 Mult.:1 | Through Hole | 28-DIP Module (0.600, 15.24mm) | NO | - | 0°C~70°C | Tube | e0 | no | Obsolete | 3 (168 Hours) | 28 | Clock/Calendar | TIN LEAD | - | 2.97V~3.63V | DUAL | 240 | - | 3.3V | 2.54mm | - | NOT SPECIFIED | 28 | R-PDIP-P28 | COMMERCIAL | - | - | - | Parallel | 8KB | - | 0.032MHz | 8 | - | HH:MM:SS (24 hr) | YY-MM-DD-dd | 2mA @ 3.3V | - | - | Alarm, Leap Year, NVSRAM, Watchdog Timer, Y2K | 9.398mm | 38.862mm | 15.24mm | Non-RoHS Compliant | ||
| DS1553W-120 | ||||||||||||||||||||||||||||||||||||||||||||||||||
| Mfr. Part #DS17885E-3Twicea Part #699-476-DS17885E-3 | Rochester Electronics, LLC |
DS17885 REAL-TIME CLOCK
Datasheet
Compare
| Min.:1 Mult.:1 | Surface Mount | 28-TSSOP (0.465, 11.80mm Width) | YES | - | 0°C~70°C | Tray | e0 | no | Obsolete | 3 (168 Hours) | 28 | Real Time Clock (RTC) | TIN LEAD | - | 3V | DUAL | 240 | - | 3V | 0.55mm | - | 20 | 28 | R-PDSO-G28 | COMMERCIAL | - | - | - | Multiplexed | 8K | - | 0.032MHz | 8 | 1 | HH:MM:SS | YYYY-MM-DD | - | - | PARALLEL, MUXED BUS | - | 1.2mm | 11.8mm | 8mm | Non-RoHS Compliant | ||
| DS17885E-3 | ||||||||||||||||||||||||||||||||||||||||||||||||||
![]() | Mfr. Part #DS1685S-3Twicea Part #699-476-DS1685S-3 | Rochester Electronics, LLC |
DS1685 5V REAL-TIME CLOCK
Datasheet
Compare
| Min.:1 Mult.:1 | Surface Mount | 24-SOIC (0.295, 7.50mm Width) | YES | - | 0°C~70°C | Tube | e0 | no | Obsolete | 3 (168 Hours) | 24 | Clock/Calendar | TIN LEAD | - | 2.7V~3.7V | DUAL | 245 | - | 3V | 1.27mm | - | NOT SPECIFIED | 24 | R-PDSO-G24 | COMMERCIAL | - | - | - | Parallel | 242B | - | 0.032MHz | 8 | 1 | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | 2mA @ 3V | 2.5V~3.7V | - | Alarm, NVSRAM, Square Wave Output, Y2K | 2.65mm | 15.4mm | 7.5mm | Non-RoHS Compliant | ||
| DS1685S-3 | ||||||||||||||||||||||||||||||||||||||||||||||||||
![]() | Mfr. Part #X1228V14I-4.5ATwicea Part #699-476-X1228V14I-4.5A | Rochester Electronics, LLC |
RTC, VOLATILE
Datasheet
Compare
| Min.:1 Mult.:1 | Surface Mount | 14-TSSOP (0.173, 4.40mm Width) | YES | - | -40°C~85°C | Tube | e0 | no | Obsolete | 1 (Unlimited) | 14 | Clock/Calendar | TIN LEAD | - | 2.7V~5.5V | DUAL | 240 | - | 5V | 0.65mm | - | 30 | 14 | R-PDSO-G14 | COMMERCIAL | - | - | - | I2C, 2-Wire Serial | - | - | 0.032MHz | - | 1 | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | 10μA~20μA @ 2.7V~5V | 1.8V~5.5V | I2C | Alarm, Leap Year, Supervisor, Watchdog Timer | 1.2mm | 5mm | 4.4mm | Non-RoHS Compliant | ||
| X1228V14I-4.5A | ||||||||||||||||||||||||||||||||||||||||||||||||||
| Mfr. Part #DS1558WTwicea Part #699-476-DS1558W | Rochester Electronics, LLC |
WATCHDOG CLOCK WITH NV RAM
Datasheet
Compare
| Min.:1 Mult.:1 | Surface Mount | 48-LQFP | YES | - | -40°C~85°C | Tray | e0 | no | Obsolete | 3 (168 Hours) | 48 | Clock/Calendar | TIN LEAD | - | 2.97V~3.63V | QUAD | 245 | - | 3.3V | 0.5mm | unknown | NOT SPECIFIED | 48 | S-PQFP-G48 | COMMERCIAL | - | - | - | Parallel | - | - | 0.032MHz | 8 | - | HH:MM:SS (24 hr) | YY-MM-DD-dd | 2mA @ 3.3V | 2.5V~3.7V | - | Alarm, Leap Year, Watchdog Timer, Y2K | 1.2mm | 7mm | 7mm | Non-RoHS Compliant | ||
| DS1558W | ||||||||||||||||||||||||||||||||||||||||||||||||||
![]() | Mfr. Part #DS1554-70Twicea Part #699-476-DS1554-70 | Rochester Electronics, LLC |
NV, Y2K TIMEKEEPING RAM
Datasheet
Compare
| Min.:1 Mult.:1 | Through Hole | 32-DIP Module (0.600, 15.24mm) | NO | - | 0°C~70°C | Tube | e0 | no | Obsolete | 1 (Unlimited) | 32 | Clock/Calendar | TIN LEAD | IT CAN ALSO OPERATE WITH 5V | 4.5V~5.5V | DUAL | 240 | - | 5V | 2.54mm | - | NOT SPECIFIED | 32 | R-PDIP-P32 | COMMERCIAL | - | - | - | Parallel | 32KB | - | 0.032MHz | 8 | - | HH:MM:SS (24 hr) | YY-MM-DD-dd | 6mA @ 5V | - | - | Alarm, Leap Year, NVSRAM, Watchdog Timer, Y2K | 9.27mm | 38.675mm | 15.24mm | Non-RoHS Compliant | ||
| DS1554-70 | ||||||||||||||||||||||||||||||||||||||||||||||||||
![]() | Mfr. Part #X1288S16-4.5ATwicea Part #699-476-X1288S16-4.5A | Rochester Electronics, LLC |
RTC, VOLATILE
Datasheet
Compare
| Min.:1 Mult.:1 | Surface Mount | 16-SOIC (0.295, 7.50mm Width) | YES | - | 0°C~70°C | Tube | e0 | no | Obsolete | 1 (Unlimited) | 16 | Clock/Calendar | TIN LEAD | - | 4.5V~5.5V | DUAL | 240 | - | 5V | 1.27mm | - | NOT SPECIFIED | 16 | R-PDSO-G16 | COMMERCIAL | - | - | - | I2C, 2-Wire Serial | - | - | 0.032MHz | - | 1 | HH:MM:SS:hh (12/24 hr) | YY-MM-DD-dd | 10μA~20μA @ 2.7V~5V | 1.8V~5.5V | I2C | Alarm, Leap Year, Supervisor, Watchdog Timer | 2.65mm | 10.3mm | 7.5mm | Non-RoHS Compliant | ||
| X1288S16-4.5A | ||||||||||||||||||||||||||||||||||||||||||||||||||
![]() | Mfr. Part #DS1685-3Twicea Part #699-476-DS1685-3 | Rochester Electronics, LLC |
DS1685 5V REAL-TIME CLOCK
Datasheet
Compare
| Min.:1 Mult.:1 | Through Hole | 24-DIP (0.600, 15.24mm) | NO | - | 0°C~70°C | Tube | e0 | no | Obsolete | 1 (Unlimited) | 24 | Clock/Calendar | TIN LEAD | - | 2.7V~3.7V | DUAL | 240 | - | 3V | 2.54mm | - | 20 | 24 | R-PDIP-T24 | COMMERCIAL | - | - | - | Parallel | 242B | - | 0.032MHz | 8 | 1 | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | 2mA @ 3V | 2.5V~3.7V | - | Alarm, NVSRAM, Square Wave Output, Y2K | 5.08mm | 31.75mm | 15.24mm | Non-RoHS Compliant | ||
| DS1685-3 | ||||||||||||||||||||||||||||||||||||||||||||||||||
![]() | Mfr. Part #DS1337Twicea Part #699-476-DS1337 | Rochester Electronics, LLC |
DS1337 I2C SERIAL RTC
Datasheet
Compare
| Min.:1 Mult.:1 | Through Hole | 8-DIP (0.300, 7.62mm) | NO | - | -40°C~85°C | Tube | e0 | no | Obsolete | 1 (Unlimited) | 8 | Clock/Calendar | TIN LEAD | - | 1.8V~5.5V | DUAL | 240 | - | 3.3V | 2.54mm | unknown | 20 | 8 | R-PDIP-T8 | COMMERCIAL | - | - | - | I2C, 2-Wire Serial | - | - | 0.032MHz | - | 1 | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | 0.6μA @ 1.3V~1.8V | - | I2C | Alarm, Leap Year, Square Wave Output | 4.572mm | 9.375mm | 7.62mm | Non-RoHS Compliant | ||
| DS1337 | ||||||||||||||||||||||||||||||||||||||||||||||||||
![]() | Mfr. Part #ISL1208IU8Twicea Part #699-476-ISL1208IU8 | Rochester Electronics, LLC |
RTC, NON-VOLATILE
Datasheet
Compare
| Min.:1 Mult.:1 | Surface Mount | 8-TSSOP, 8-MSOP (0.118, 3.00mm Width) | YES | - | -40°C~85°C | Tube | e0 | no | Obsolete | 1 (Unlimited) | 8 | Clock/Calendar | TIN LEAD | - | 2.7V~5.5V | DUAL | 240 | - | 3V | 0.65mm | - | 30 | 8 | S-PDSO-G8 | COMMERCIAL | - | - | - | I2C, 2-Wire Serial | 2B | - | 0.032MHz | - | 1 | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | 4μA~6μA @ 3V~5V | 1.8V~5.5V | I2C | Alarm, Leap Year, SRAM | 1.1mm | 3mm | 3mm | Non-RoHS Compliant | ||
| ISL1208IU8 | ||||||||||||||||||||||||||||||||||||||||||||||||||
![]() | Mfr. Part #DS1338U-33Twicea Part #699-476-DS1338U-33 | Rochester Electronics, LLC |
I2C RTC WITH TRICKLE CHARGER
Datasheet
Compare
| Min.:1 Mult.:1 | Surface Mount | 8-TSSOP, 8-MSOP (0.118, 3.00mm Width) | YES | - | -40°C~85°C | Tube | e0 | no | Obsolete | 1 (Unlimited) | 8 | Clock/Calendar | TIN LEAD | - | 3V~5.5V | DUAL | 240 | - | 3.3V | 0.65mm | - | 20 | 8 | S-PDSO-G8 | COMMERCIAL | - | - | - | I2C, 2-Wire Serial | 56B | - | 0.032MHz | - | 1 | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | 125μA~200μA @ 3.63V~5.5V | 1.3V~3.7V | I2C | Leap Year, NVSRAM, Square Wave Output | 1.1mm | 3mm | 3mm | Non-RoHS Compliant | ||
| DS1338U-33 | ||||||||||||||||||||||||||||||||||||||||||||||||||
![]() | Mfr. Part #DS1338Z-33Twicea Part #699-476-DS1338Z-33 | Rochester Electronics, LLC |
I2C RTC WITH TRICKLE CHARGER
Datasheet
Compare
| Min.:1 Mult.:1 | Surface Mount | 8-SOIC (0.154, 3.90mm Width) | YES | - | -40°C~85°C | Tube | e0 | no | Obsolete | 1 (Unlimited) | 8 | Clock/Calendar | TIN LEAD | - | 3V~5.5V | DUAL | 245 | - | 3.3V | 1.27mm | - | NOT SPECIFIED | 8 | R-PDSO-G8 | COMMERCIAL | - | - | - | I2C, 2-Wire Serial | 56B | - | 0.032MHz | - | 1 | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | 125μA~200μA @ 3.63V~5.5V | 1.3V~3.7V | I2C | Leap Year, NVSRAM, Square Wave Output | 1.75mm | 4.9mm | 3.9mm | Non-RoHS Compliant | ||
| DS1338Z-33 | ||||||||||||||||||||||||||||||||||||||||||||||||||
![]() | Mfr. Part #DS1374U-33Twicea Part #699-476-DS1374U-33 | Rochester Electronics, LLC |
32-BIT BINARY COUNTER WDOG RTC
Datasheet
Compare
| Min.:1 Mult.:1 | Surface Mount | 10-TFSOP, 10-MSOP (0.118, 3.00mm Width) | YES | - | -40°C~85°C | Tube | e0 | no | Obsolete | 1 (Unlimited) | 10 | Binary Counter | TIN LEAD | - | 2.97V~5.5V | DUAL | 240 | 1 | 3.3V | 0.5mm | unknown | 20 | 10 | S-PDSO-G10 | - | 5.5V | 2.97V | 1 | I2C, 2-Wire Serial | - | NO | - | - | - | Binary | - | 175μA @ 2.97V~5.5V | 1.3V~5.5V | - | Alarm, Square Wave Output, Trickle-Charger, Watchdog Timer | 1.1mm | 3mm | 3mm | Non-RoHS Compliant | ||
| DS1374U-33 | ||||||||||||||||||||||||||||||||||||||||||||||||||
![]() | Mfr. Part #DS1318Twicea Part #699-476-DS1318 | Rochester Electronics, LLC |
PARALLEL ELAPSED TIME COUNTER
Datasheet
Compare
| Min.:1 Mult.:1 | Surface Mount | 24-TSSOP (0.173, 4.40mm Width) | YES | - | -40°C~85°C | Tube | e0 | no | Obsolete | 1 (Unlimited) | 24 | Elapsed Time Counter | TIN LEAD | - | 3V~3.6V | DUAL | 240 | - | 3.3V | 0.65mm | - | 20 | 24 | R-PDSO-G24 | COMMERCIAL | - | - | - | Parallel | - | - | 0.032MHz | 8 | 1 | Binary | - | 150μA @ 3V~3.6V | 1.6V~3.7V | - | Alarm, Square Wave Output | 1.1mm | 7.8mm | 4.4mm | Non-RoHS Compliant | ||
| DS1318 | ||||||||||||||||||||||||||||||||||||||||||||||||||
![]() | Mfr. Part #BQ3285LFSS-A1TRTwicea Part #699-476-BQ3285LFSS-A1TR | Rochester Electronics, LLC |
RTC, NON-VOLATILE
Datasheet
Compare
| Min.:1 Mult.:1 | Surface Mount | 24-SSOP (0.154, 3.90mm Width) | - | 24-SSOP/QSOP | 0°C~70°C | Tape & Reel (TR) | - | - | Obsolete | 2 (1 Year) | - | Clock/Calendar | - | - | 2.7V~5.5V | - | - | - | - | - | - | - | - | - | - | - | - | - | Parallel | 242B | - | - | - | - | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | 100μA @ 3V | 2.4V~4V | - | Alarm, Daylight Savings, Leap Year, NVSRAM, Square Wave Output | - | - | - | ROHS3 Compliant | ||
| BQ3285LFSS-A1TR |
Index :
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