M54HC160 Просмотр технического описания (PDF) - STMicroelectronics

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производитель

M54HC160

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STMicroelectronics 

M54/M74HC160/161/162/163

SWITCHING CHARACTERISTICS TEST WAVEFORM (continued)

COUNTENABLE MODE

CASCADE MODE

(fix maximum count)

TEST CIRCUIT ICC (Opr.)

TYPICAL APPLICATION

TOTAL OPERATING CURRENT WHEN

USING A CAPACITIVE LOAD

When the outputs drive a capacitive load, the

total current can be calculated as follows :

For M74HC160/162 :

∆

lCC

= fCK

⋅

VCC⋅

C2a

+

Cb

5

+

Cc

10

+

Cd

10

+

C1c0a

For M74HC161/163 :

∆

lCC

= fCK

⋅

VCC⋅

C2a

+

Cb

4

+

Cc

8

+

Cd

16

+

C1c6a

Ca to Cca are the capacitors loading the out-

puts.

11/16

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