M54HC243F1R データシートの表示（PDF） - STMicroelectronics

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M54HC243F1R

QUAD BUS TRANSCEIVER (3-STATE)

STMicroelectronics 

M54/M74HC242/243

TEST CIRCUIT ICC (Opr.)

CCP CALCULATION

CPD is to be calculated with the following formula

by using the measured value of ICC (Opr.) in the

test circuit opposite

CPD

=

ICC

fIN

(Opr.)

x VCC

In determining the typical value of CPD, a

relatively high frequency of 1MHz was applied to

fIN, in order to eliminate any error caused by the

quiescent supply current.

6/11

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