參數(shù)資料
型號： M54HC691F1R
廠商： 意法半導(dǎo)體
元件分類： 通用總線功能
英文描述： HC691/693 4 BIT BINARY COUNTER/REGISTER 3-STATE HC690/692 DECADE COUNTER/REGISTER 3-STATE
中文描述： HC691/693 4位二進(jìn)制計數(shù)器/注冊3態(tài)HC690/692十進(jìn)制計數(shù)器/寄存器三態(tài)
文件頁數(shù)： 3/23頁
文件大小： 433K
代理商： M54HC691F1R
TRUTH TABLE
INPUTS
CCK
OUTPUS
QB
Z
L
b
NO CHANGE
NO CHANGE
COUNT UP
NO CHANGE
L
b’
NO CHANGE
FUNCTION
CCLR LOAD
X
L
H
H
H
H
H
X
X
X
(*): X forHC690/691
X : DON’T CARE
Z :HIGH IMPEDANCE
a-d : THE LEVEL OFSTEADY STATEINPUTS AT INPUTS ATHROUGHTD RESPECTIVELY.
a’-d’ : THELEVELOF STEADYSTATE OUTPUTSAT INTERNALCOUNTEROUTPUTS a’ through qd’ respectively
HC690/692 RCO = QA
QD
ENT
HC691/693 RCO = QA
QB
QC
QD
ENT
ENP
X
X
X
L
X
H
X
X
X
X
ENT
X
X
X
X
L
H
X
X
X
X
forHC692/693
RCLR
X
X
X
X
X
X
X
L
H
H
RCK
X
X
X
X
X
X
X
(*)
R/C
X
L
L
L
L
L
L
H
H
H
G
X
L
L
L
L
L
L
L
L
L
QA
Z
L
a
QC
Z
L
c
QD
Z
L
d
X
X
L
H
H
H
X
X
X
X
X
(*)
HIGH IMPEDANCE
CLEAR COUNTER
LOAD COUNTER
NO COUNT
NO COUNT
COUNT UP
NO COUNT
CLEAR REGISTER
LOAD REGISTER
NO LOAD
X
X
X
L
a’
L
c’
L
d’
BLOCK DIAGRAM
M54/M74HC690/691/692/693
3/23
相關(guān)PDF資料
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