M54HC643 データシートの表示（PDF） - STMicroelectronics

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M54HC643

HC640 INVERTING, HC643 INVERTING/NON INVERTING OCTAL BUS TRANSCEIVER (3-STATE): HC245 NON INVERTING

STMicroelectronics 

M54/M74HC245/640/643

SWITCHING CHARACTERISTICS TEST WAVEFORM

TEST CIRCUIT ICC (Opr.)

CPD 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

f IN

(Opr.)

x VCC

6/11

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