is42s16402j Integrated Silicon Solution, Inc., is42s16402j Datasheet - Page 15
is42s16402j
Manufacturer Part Number
is42s16402j
Description
1 Meg Bits X 16 Bits X 4 Banks 64-mbit Synchronous Dynamic Ram
Manufacturer
Integrated Silicon Solution, Inc.
Datasheet
1.IS42S16402J.pdf
(61 pages)
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IS42S16402J
IS45S16402J
Output Drive Options:
SDRAMs use LVTTL I/O standard, typically 3.3V. The output switching range for a 3.3V LVTTL is 0.4 to 2.4V. Because
of the large voltage swing, LVTTL can experience ground bounce and other signal integrity issues with wide buses
when driving high capacitive loads.
Traditional SDRAMs are designed to drive large capacitive loads and are specified with drive capabilities of over
120mA. For certain applications this high drive capability can be a disadvantage and may cause signal integrity issues
including overshoot, undershoot, and signal ringing which causes EMI issues.
To provide system designers with an alternative solution, ISSI has designed SDRAMs with both Standard and
Reduced Strength Output Drive as outlined.
64Mb SDRAMs Drive Strength Options
Integrated Silicon Solution, Inc. — www.issi.com
Rev. A
12/06/2011
Part #
IS42/45S16400J (for reference only)
IS42/45S16402J
Description
3.3V, standard drive output
3.3V, reduced drive output
Output Drive
±120mA
±12-15mA
15
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