The 1338 is a serial real-time clock (RTC) device that consumes ultra-low power and provides a full binary-coded decimal (BCD) clock/calendar with 56 bytes of battery backed Non-Volatile Static RAM. The clock/calendar provides seconds, minutes, hours, day, date, month, and year information. The clock operates in either the 24-hour or 12-hour format with AM/PM indicator. The end of the month date is automatically adjusted for months with fewer than 31 days, including corrections for leap year. Access to the clock/calendar registers is provided by an I2C interface capable of operating in fast I2C mode. Built-in Power-sense circuitry detects power failures and automatically switches to the backup supply, maintaining time and date operation.

Features

  • Real-Time Clock (RTC) counts seconds, minutes, hours, day, date, month, and year with leap-year compensation valid up to 2100
  • 56-Byte battery-backed Non Volatile RAM for data storage
  • Fast mode I2C Serial interface
  • Automatic power-fail detect and switch circuitry
  • Programmable square-wave output
  • Packaged in 8-pin MSOP, 8-pin SOIC, or 16-pin SOIC (surface-mount package with an integrated crystal)
  • Industrial temperature range (-40°C to +85°C)

Product Options

注文可能な製品ID Part Status Core Voltage (V) Pkg. Type Lead Count (#) Temp. Grade Pb (Lead) Free Carrier Type パッケージ 購入/サンプル
1338-18DCGI Active 1.8, 2.5, 3.3, 5, 5.5 SOIC 8 I はい Tube Package Info
Availability
1338-18DCGI8 Active 1.8, 2.5, 3.3, 5, 5.5 SOIC 8 I はい Reel Package Info
Availability
1338-18DVGI Last Time Buy 1.8, 2.5, 3.3, 5, 5.5 TSSOP 8 I はい Tube Package Info
Availability
1338-18DVGI8 Last Time Buy 1.8, 2.5, 3.3, 5, 5.5 TSSOP 8 I はい Reel Package Info
Availability
1338-31DCGI Active 2.5, 3.3, 5, 5.5 SOIC 8 I はい Tube Package Info
Availability
1338-31DCGI8 Active 2.5, 3.3, 5, 5.5 SOIC 8 I はい Reel Package Info
Availability
1338-31DVGI Active 2.5, 3.3, 5, 5.5 TSSOP 8 I はい Tube Package Info
Availability
1338-31DVGI8 Active 2.5, 3.3, 5, 5.5 TSSOP 8 I はい Reel Package Info
Availability
1338AC-18SRGI Last Time Buy 1.8, 2.5, 3.3, 5, 5.5 SOIC 16 I はい Tube Package Info
Availability
1338AC-18SRGI8 Last Time Buy 1.8, 2.5, 3.3, 5, 5.5 SOIC 16 I はい Reel Package Info
Availability
1338AC-31SRGI Last Time Buy 2.5, 3.3, 5, 5.5 SOIC 16 I はい Tube Package Info
Availability
1338AC-31SRGI8 Last Time Buy 2.5, 3.3, 5, 5.5 SOIC 16 I はい Reel Package Info
Availability

Documentation & Downloads

タイトル 他の言語 Type 形式 サイズ 日付
データシート
1338 Datasheet Datasheet PDF 348 KB
Errata# : UEN-13-01 Datasheet Errata PDF 421 KB
1338B-31 Datasheet Datasheet PDF 541 KB
アプリケーションノート、ホワイトペーパー
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
PCN / PDN
PCN# : A2003-01 Add Greatek Taiwan as an Alternate Assembly Location on Select Packages Product Change Notice PDF 113 KB
PDN#: CQ-19-04 Product Discontinuance Notice Product Discontinuation Notice PDF 1010 KB
PCN# : A1602-01(R1) Add Greatek Taiwan as Alternate Assembly Product Change Notice PDF 611 KB
PCN# : A1602-01 Add Greatek Taiwan as Alternate Assembly Product Change Notice PDF 611 KB
PDN# : CQ-14-08 Manufacturing Discontinunce PDN Product Discontinuation Notice PDF 486 KB
PCN# : A1403-03 Gold wire to Copper wire Product Change Notice PDF 42 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
PCN# : W1101-02R2 Fab 4 to TSMC Product Change Notice PDF 67 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# : A1204-01R1 Revised Notification to Remove Selective Devices from TSSOP-16 Product Change Notice PDF 332 KB
その他資料
Timing Solutions Products Overview Overview PDF 4.11 MB
IDT Clock Generation Overview (日本語) English Overview PDF 1.83 MB
IDT Clock Distribution Overview (日本語) English Overview PDF 3.79 MB
Real Time Clocks Product Brief PDF 441 KB