m5474hct640 STMicroelectronics, m5474hct640 Datasheet - Page 6

• Manufacturer Part Number: m5474hct640
• Description: Octal Transceiver 3-state Hct245 Inverting Hct640 Inverting, Hct643 Inverting/non Inverting
• Manufacturer: STMicroelectronics

M54/M74HCT245/640/643
TEST CIRCUIT I
6/11
CC
(Opr.)
C
PD
C
formula by using the measured value of I
(Opr.) in the test circuit opposite.
In determining the value of C
high frequency of 1 MHz was applied to f
orther to eliminate any error caused by the
quiescent supply current.
PD
CALCULATION
is to be calculated with the following
C
PD
=
I
f
CC
IN
x V
Opr .
CC
PD
, a relatively
IN
, in
CC