NT5DS32M8AT Datasheet, PDF (19/27 Pages) List of Unclassifed Manufacturers – 256Mb DDR333/300 SDRAM

NT5DS64M4AT NT5DS64M4AW
NT5DS32M8AT NT5DS32M8AW
256Mb DDR333/300 SDRAM
AC Characteristics
(Notes 1-5 apply to the following Tables; Electrical Characteristics and DC Operating Conditions, AC Operating Conditions, I_DD
Specifications and Conditions, and Electrical Characteristics and AC Timing.)
1. All voltages referenced to V_SS.
2. Tests for AC timing, I_DD, and electrical, AC and DC characteristics, may be conducted at nominal reference/supply voltage
levels, but the related specifications and device operation are guaranteed for the full voltage range specified.
3. Outputs measured with equivalent load. Refer to the AC Output Load Circuit below.
4. AC timing and I_DD tests may use a V_IL to V_IH swing of up to 1.5V in the test environment, but input timing is still referenced
to V_REF (or to the crossing point for CK, CK), and parameter specifications are guaranteed for the specified AC input levels
under normal use conditions. The minimum slew rate for the input signals is 1V/ns in the range between V_IL(AC) and
V_IH(AC).
5. The AC and DC input level specifications are as defined in the SSTL_2 Standard (i.e. the receiver effectively switches as a
result of the signal crossing the AC input level, and remains in that state as long as the signal does not ring back above
(below) the DC input low (high) level.
AC Output Load Circuit Diagrams
V_TT
Output
(V_OUT)
50Ω
Timing Reference Point
30pF
Preliminary
10/01
19
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