M74HC163 데이터 시트보기 (PDF) - STMicroelectronics
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M74HC163 Datasheet PDF : 16 Pages
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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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