X9221AWS 查看數據表（PDF） - Intersil
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X9221AWS Datasheet PDF : 15 Pages
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X9221A
A.C. CONDITIONS OF TEST
Input pulse levels
Input rise and fall times
Input and output timing levels
VCC x 0.1 to VCC x 0.9
10ns
VCC x 0.5
SYMBOL TABLE
WAVEFORM INPUTS
OUTPUTS
Must be
steady
May change
from LOW
to HIGH
May change
from HIGH
to LOW
Don’t Care:
Changes
Allowed
N/A
Will be
steady
Will change
from LOW
to HIGH
Will change
from HIGH
to LOW
Changing:
State Not
Known
Center Line
is High
Impedance
Equivalent A.C. Test Circuit
5V
1533Ω
SDA Output
100pF
Circuit #3 SPICE Macro Model
Macro Model
RTOTAL
RH
RL
CH
CL
10pF
CW 10pF
25pF
RW
Guidelines for Calculating Typical Values of Bus
Pull-Up Resistors
120
100
RMIN
=
VCC MAX
IOL MIN
=1.8kΩ
80
RMAX
= tR
CBUS
60
Max.
Resistance
40
20 Min.
Resistance
0
0 20 40 60
80 100 120
Bus Capacitance (pF)
11
FN8163.1
September 14, 2005
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