NOTICE - The following device(s) are recommended alternatives:

The 1337G device is a low power serial real-time clock (RTC) device with two programmable time-of-day alarms and a programmable square-wave output. Address and data are transferred serially through an I2C bus. The device provides seconds, minutes, hours, day, date, month, and year information. The date at the end of the month is automatically adjusted for months with fewer than 31 days, including corrections for leap year. The clock operates in either the 24-hour or 12-hour format with AM/PM indicator.

Features

  • Real-Time Clock (RTC) counts seconds, minutes, hours, day, date, month, and year with leap-year compensation valid up to 2100
  • Packaged in 8-pin MSOP, 8-pin SOIC, 16-pin QFN (without integrated crystal), or 16-pin SOIC (surface-mount package with an integrated crystal)
  • I2C Serial interface (Normal and Fast modes)
  • Two time-of-day alarms
  • Oscillator Stop Flag
  • Programmable square-wave output defaults to 32 kHz on power-up
  • Operating voltage of 1.8 to 5.5 V
  • Industrial temperature range (-40 to +85°C)

Product Options

Orderable Part ID Part Status Pkg. Type Lead Count (#) Temp. Grade Pb (Lead) Free Carrier Type Package Buy Sample
1337GDVGI Not Recommended for New Designs TSSOP 8 I Yes Tube Package Info
Availability
1337GDVGI8 Not Recommended for New Designs TSSOP 8 I Yes Reel Package Info
Availability
1337GCSRI Obsolete SOIC 16 I No Tube Package Info
Availability
1337GCSRI8 Obsolete SOIC 16 I No Reel Package Info
Availability
1337GDCGI Obsolete SOIC 8 I Yes Tube Package Info
Availability
1337GDCGI8 Obsolete SOIC 8 I Yes Reel Package Info
Availability
1337GNLGI Obsolete VFQFPN 16 I Yes Tube Package Info
Availability
1337GNLGI8 Obsolete VFQFPN 16 I Yes Reel Package Info
Availability

Documentation & Downloads

Title Other Languages Type Format File Size Date
Datasheets & Errata
1337AG Datasheet Datasheet PDF 321 KB
1337G Datasheet Datasheet PDF 359 KB
Application Notes & White Papers
AN-828 Termination - LVPECL Application Note PDF 322 KB
AN-845 Termination - LVCMOS Application Note PDF 146 KB
AN-844 Termination - AC Coupling Clock Receivers Application Note PDF 170 KB
AN-842 Thermal Considerations in Package Design and Selection Application Note PDF 495 KB
AN-840 Jitter Specifications for Timing Signals Application Note PDF 442 KB
AN-838 Peak-to-Peak Jitter Calculations Application Note PDF 115 KB
AN-839 RMS Phase Jitter Application Note PDF 233 KB
AN-827 Application Relevance of Clock Jitter Application Note PDF 1.15 MB
AN-815 Understanding Jitter Units Application Note PDF 565 KB
AN-805 Recommended Ferrite Beads Application Note PDF 121 KB
PCNs & PDNs
PDN# : CQ-14-02R2 Product Discontinuation Notice PDF 549 KB
PCN# : W1101-02R4 Fab 4 to TSMC Product Change Notice PDF 70 KB
PCN# : W1101-02R3 Fab 4 to TSMC Product Change Notice PDF 71 KB
PDN# : CQ-14-02R1 PRODUCT DISCONTINUANCE NOTICE Product Discontinuation Notice PDF 545 KB
PCN# : W1101-02R2 Fab 4 to TSMC Product Change Notice PDF 67 KB
PDN# : CQ-14-02 PRODUCT DISCONTINUANCE NOTICE Product Discontinuation Notice PDF 544 KB
PCN# : A1305-01 Gold Wire to Copper Wire Product Change Notice PDF 148 KB
PCN# : A1208-01R1 Gold to Copper Wire Product Change Notice PDF 254 KB
PCN# : A1208-06 Changed of Assembly Location and Crystal Product Change Notice PDF 1.06 MB
PCN# : W1101-02 WAFER FAB TRANSFER FROM FAB 4 TO TSMC ON SELECTIVE DEVICES Product Change Notice PDF 70 KB
Other
Real Time Clocks Product Brief PDF 441 KB