參數(shù)資料
型號: HCC40102BF
廠商: 意法半導體
元件分類: 通用總線功能
英文描述: Synchronous Down Counter
中文描述: 同步減計數(shù)器
文件頁數(shù): 4/13頁
文件大?。?/td> 270K
代理商: HCC40102BF
LOGIC DIAGRAMS
(continued)
40102B
TRUTH TABLE
Control Inputs
APE
1
1
1
0
X
CLR
1
1
1
1
0
SPE
1
1
0
X
X
CI/CE
1
0
X
X
X
Preset Mode
Action
Inhibit Counter
Count Down
Preset on Next Positive Clock Transition
Preset Asynchrounously
Clear to Maximum Count
Synchronous
Asynchronous
Timing Diagram for 40102B and 40103B
Notes
:
1. 0 = Low level
1 = Highlevel
X = Don’t care
2. Clock connected to clock input.
3. Synchronous operation : changes occuron negative-to-positive clock transitions..
JAM inputs : HCC/HCF010B ; MSD = J7, J6, J5, J4(J7 isMSB)
LSD = J3,J2, J1,J0 (J3is MSB)
HCC/HCF40103B Binary; MSB =J7, LSB =J0
HCC/HCF40102B/40103B
4/13
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