IDT1339
REAL-TIME CLOCK WITH SERIAL I
2
C INTERFACE RTC
IDT®
REAL-TIME CLOCK WITH SERIAL I
2
C INTERFACE 25
IDT1339 REV S 031014
Revision History
Rev. Date Originator Description of Change
A 06/26/07 S. Sharma New device. Preliminary release.
B 11/01/07 J. Sarma Updated ordering info for 16-pin SOIC package.
C 01/17/08 J. Sarma Added 8-pin SOIC package; updated “Power-up/down Characteristics” table; updates to “Absolute
Maximum Ratings” table.
D 02/11/08 J. Sarma Combined part numbers for 1339-3 and 1339-33 into one part number: 1339-31.
E 03/28/08 J.Sarma Added new note to Part Ordering information pertaining to RoHS compliance and Pb-free devices.
F 05/18/08 J.Sarma Changed the part number for the 16PIN SOIC package from IDT1339C-31SOGI to
IDT1339C-31SRI and the IDT1339C-2SOGI changed to IDT1339C-2SRI
G 08/04/08 J.Sarma Removed “Preliminary”; removed UL statement from pin 3 description.
H 11/20/08 J.Sarma Updated Block Diagram, Detailed description section(s), Operating Circuit diagram, and Typical
Operating Characteristics diagrams.
I 12/03/08 J.Sarma Updated Block Diagram, Features bullets, Pin descriptions, Typical Operating Characteristics
diagrams; added marking diagrams.
J 11/10/09 Added “Handling, PCB Layout, and Assembly” section.
K 03/29/10 S.S. Added “Timeout” paragraph on page 11.
L 7/30/10 L.P. Added Underwriters Laboratory recognition.
M 04/13/11 L. P. Updated Supply Current specifications.
N 06/03/11 D.C. Updated package drawing and dimensions for 8MSOP.
P 06/05/12 D.C. 1. Updated top-side marking for DVG package from 'YWW$' to 'YYWW$'
Q 09/20/12 J. Chao 1. Moved all from Fab4 to TSMC. QA requested change in the marking of only the 16-pin SOIC
device with internal crystal to add "A" due to the fact that TSMC uses a different crystal than Fab4.
Notification of a change in orderables was initiated with PCN A1208-06.
2. Updated 16-pin SOIC marking diagram and ordering information to include "A".
R 12/10/12 J. Chao Updated orderable parts - added “G” to 16-pin SOIC parts with SRI/SRI8. New part numbers for
16-pin SOIC will read as SRGI and SRGI8.
S 07/01/13 J. Chao Updated Typ. and Max. values for Vbackup parameters in DC char table per latest TSMC data.
S 03/10/14 J. Chao Updated tVCCF from 300 µs to 3 ms. Added associated note.
