(TA = 25 C; fC = 1MHz; VDD = 0V)
CAPACITANCE
Output and I/O pins capacitive load specified as follows:
PARAMETER
SYMBOL
CIN
MIN
TYP
MAX
5.0
UNIT
pF
COMMENT
Input Capacitance
Output Capacitance 1
(All outputs except
nPULSE1 in BackPlane
Mode)
Output Capacitance 2
(nPULSE1, in
COUT1
45
pF
Maximum
Capacitive Load
which can be
supported by each
output.
COUT2
400
pF
BackPlane
Mode Only - Open
Drain)
AC Measurements are taken at the following points:
Inputs:
Outputs:
t
t
2.0V
2.4V
1.4V
0.4V
50%
0.8V
2.0V
0.8V
t
2.4V
1.4V
0.4V
50%
t
Inputs are driven at 2.4V for logic "1" and 0.4 V for logic "0".
Outputs are measured at 2.0V min. for logic "1" and 0.8V max. for logic "0".
43
SMSC [ SMSC CORPORATION ]
