參數(shù)資料
型號(hào): M74HC390M1R
廠商: 意法半導(dǎo)體
英文描述: 8-Bit, 3 us DAC, Serial Input, Pgrmable Settling Time/ Power Consumption, Ultra Low Power 8-SOIC -40 to 85
中文描述: 雙十進(jìn)制計(jì)數(shù)器
文件頁數(shù): 2/13頁
文件大?。?/td> 266K
代理商: M74HC390M1R
TRUTH TABLE
COUNT
OUTPUTS
BCD COUNT *
QC
L
L
L
L
H
H
H
H
L
L
BI-QUINARY **
QD
L
L
L
L
H
L
L
L
L
H
QD
L
L
L
L
L
L
L
L
H
H
QB
L
L
H
H
L
L
H
H
L
L
QA
L
H
L
H
L
H
L
H
L
H
QA
L
L
L
L
L
H
H
H
H
H
QC
L
L
H
H
L
L
L
H
H
L
QB
L
H
L
H
L
L
H
L
H
L
0
1
2
3
4
5
6
7
8
9
INPUTS
CLOCK B
X
X
OUTPUTS
QB
L
BINARY COUNT UP
QUINARY COUNT UP
CLOCK A
X
CLEAR
H
L
L
QA
L
QC
L
QD
L
X
Note: * Output QA is connected toinput CLOCK Bfor BCDcount.
** Output QD isconnected to inputCLOCK A for bi-quinary count.
INPUT AND OUTPUT EQUIVALENT CIRCUIT
M54/M74HC390
2/13
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