87974I Data Sheet
©2016 Integrated Device Technology, Inc Revision E January 26, 201615
REVISION HISTORY SHEET
Rev Table Page Description of Change Date
A
10 & 11 Added Layout Guideline and PCB Board Layout.
4/2/02
A 3 Added simplifi ed block diagram. 4/4/02
A
T7 12 Revised Package Outline drawing. Corrected Package Dimensions table to corre-
spond with the Package Outline drawing.
Update format throughout datasheet.
11/15/02
B
T1
T4A
4
6
Pin Description table - updated nMR/OE and V
DDOx
pin descriptions.
3V Power Supply table - changed V
DD
parameter to “Core...” from “Positive...”.
Changed I
DD
max. limit from 105mA max. to 118mA max.,
and I
DDOx
from 20mA max. to 22mA max.
3/20/03
B
T2
T3E
5
5
Pin Characteristics Table - changed C
IN
8pF max. to 4pF typical.
FB Select Function Table - switched FB_SELx headings,
FB_SEL1 heading is in column 1, FB_SEL0 heading is in column 2.
5/15/03
B
T2 5
12
Pin Characteristics Table - added R
OUT
, Output Impedance row.
Revised Package Outline.
7/9/03
C
T4A
6
Change from die rev. A to B on part marking throughout data sheet.
Change max. temperature to 70°C down from 85°C throughout data sheet.
Power Supply DC Characteristics table - adjusted:
V
DDA
from 3.135V min. to 2.9375V min.,
I
DD
from 118mA max. to 125mA max., and
I
DDOX
from 22mA max. to 25mA max.
7/23/03
D
T4A 6
Through out the data sheet the maximum temperature was changed from 70°C to
85°C.
Power Supply DC Characteristics Table - I
DD
changed from 125mA max. to 121mA
max. and I
DDOx
changed from 25mA max. to 24mA max.
8/4/03
D
2 & 3 Swaped labels for FB_SEL0 and FB_SEL1 in the Block Diagram and Simplifi ed
Block Diagram.
2/9/04
D
T3E 5 Corrected FB Select Function Table.
6/9/04
D
T8 13 Ordering Information Table - added Lead-Free part number.
10/11/04
D
T8
9
14
Added Recommendations for Unused Input and Output Pins.
Ordering Information Table - part number and order number is now a
revision C. Corrected lead-free part number and marking, and added lead-free
note.
1/19/06
ET8 14
16
Updated datasheet’s header/footer with IDT from ICS.
Removed ICS prefi x from Part/Order Number column.
Added Contact Page.
7/26/10
E
T1 4 Updated description of nMR/OE pin
04/18/13
E
T8
1
14
Removed ICS from part numbers where needed.
Features section - removed reference to leaded packages.
Ordering Information - removed quantity from tape and reel. Deleted LF note below
the table.
Updated header and footer.
1/26/16
