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

下单器件 ID Part Status Core Voltage (V) Pkg. Code Pkg. Type Lead Count (#) Temp. Grade Pb (Lead) Free Carrier Type Buy Sample
1338-18DCGI Active 1.8, 2.5, 3.3, 5, 5.5 DCG8 SOIC 8 I Yes Tube
Availability
1338-18DCGI8 Active 1.8, 2.5, 3.3, 5, 5.5 DCG8 SOIC 8 I Yes Reel
Availability
1338-18DVGI Last Time Buy 1.8, 2.5, 3.3, 5, 5.5 DVG8 TSSOP 8 I Yes Tube
Availability
1338-18DVGI8 Last Time Buy 1.8, 2.5, 3.3, 5, 5.5 DVG8 TSSOP 8 I Yes Reel
Availability
1338-31DCGI Active 2.5, 3.3, 5, 5.5 DCG8 SOIC 8 I Yes Tube
Availability
1338-31DCGI8 Active 2.5, 3.3, 5, 5.5 DCG8 SOIC 8 I Yes Reel
Availability
1338-31DVGI Active 2.5, 3.3, 5, 5.5 DVG8 TSSOP 8 I Yes Tube
Availability
1338-31DVGI8 Active 2.5, 3.3, 5, 5.5 DVG8 TSSOP 8 I Yes Reel
Availability
1338AC-18SRGI Last Time Buy 1.8, 2.5, 3.3, 5, 5.5 PIG16 SOIC 16 I Yes Tube
Availability
1338AC-18SRGI8 Last Time Buy 1.8, 2.5, 3.3, 5, 5.5 PIG16 SOIC 16 I Yes Reel
Availability
1338AC-31SRGI Last Time Buy 2.5, 3.3, 5, 5.5 PIG16 SOIC 16 I Yes Tube
Availability
1338AC-31SRGI8 Last Time Buy 2.5, 3.3, 5, 5.5 PIG16 SOIC 16 I Yes Reel
Availability

技术资料

文档标题 他の言語 文档类型 文档格式 文件大小
数据手册与勘误表
1338 Datasheet Datasheet PDF 261 KB
Errata# : UEN-13-01 Datasheet Errata PDF 421 KB
1338B-31 Datasheet Datasheet PDF 427 KB
应用指南 &白皮书
AN-828 Termination - LVPECL Application Note PDF 229 KB
AN-845 Termination - LVCMOS Application Note PDF 62 KB
AN-844 Termination - AC Coupling Clock Receivers Application Note PDF 82 KB
AN-842 Thermal Considerations in Package Design and Selection Application Note PDF 403 KB
AN-840 Jitter Specifications for Timing Signals Application Note PDF 349 KB
AN-839 RMS Phase Jitter Application Note PDF 149 KB
AN-838 Peak-to-Peak Jitter Calculations Application Note PDF 32 KB
AN-827 Application Relevance of Clock Jitter Application Note PDF 1.06 MB
AN-815 Understanding Jitter Units Application Note PDF 476 KB
AN-805 Recommended Ferrite Beads Application Note PDF 38 KB
PCN / PDN
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
其它
Timing Solutions Products Overview Overview PDF 4.11 MB
IDT Clock Generation Overview 日本語 Overview PDF 1.83 MB
IDT Clock Distribution Overview 日本語 Overview PDF 3.79 MB
Real Time Clocks Product Brief PDF 441 KB