參數(shù)資料
型號(hào): DS1249W-150-IND
英文描述: CAPACITOR, CLASS Y2 330NFCAPACITOR, CLASS Y2 330NF; Capacitance:330nF; Voltage rating, AC:250V; Voltage rating, DC:2500V; Capacitor dielectric type:Polypropylene; Series:B81122; Tolerance, +:20%; Tolerance, -:20%; Temp, op.
中文描述: 3.3 2048kb非易失SRAM
文件頁(yè)數(shù): 7/8頁(yè)
文件大?。?/td> 157K
代理商: DS1249W-150-IND
DS1249W
7 of 8
7.
If the
CE
high transition occurs prior to, or simultaneously with, the
WE
high transition, the output
buffers remain in a high-impedance state during this period.
8.
If
WE
is low or the
WE
low transition occurs prior to, or simultaneously with, the
CE
low transition,
the output buffers remain in a high-impedance state during this period.
9.
Each DS1249W has a built-in switch that disconnects the lithium source until V
CC
is first applied by
the user. The expected t
DR
is defined as accumulative time in the absence of V
CC
starting from the
time power is first applied by the user.
10.
All AC and DC electrical characteristics are valid over the full operating temperature range. For
commercial products, this range is 0 C to +70 C. For industrial products (IND), this range is -40 C to
+85 C.
11.
In a power-down condition, the voltage on any pin may not exceed the voltage on V
CC
.
12.
t
WR1
and t
DH1
are measured from
WE
going high.
13.
t
WR2
and t
DH2
are measured from
CE
going high.
14.
DS1249 modules are recognized by Underwriters Laboratory (U.L. ) under file E99151.
DC TEST CONDITIONS
Outputs open
Cycle = 200ns for operating current
All voltages are referenced to ground
AC TEST CONDITIONS
Output Load: 100pF + 1TTL Gate
Input Pulse Levels: 0 to 2.7V
Timing Measurement Reference Levels
Input: 1.5V
Output: 1.5V
Input Pulse Rise and Fall Times: 5ns
ORDERING INFORMATION
DS1249W - SSS - III
Operating Temperature Range
blank: 0 C to +70 C
IND: -40 C to +85 C
Access Speed
100:
150:
100ns
150ns
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