M74HC645 データシートの表示（PDF） - STMicroelectronics

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M74HC645

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