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74HC595 参数 Datasheet PDF下载

74HC595图片预览
型号: 74HC595
PDF下载: 下载PDF文件 查看货源
内容描述: 具有输出8位的移位寄存器锁存器3状态 [8 BIT SHIFT REGISTER WITH OUTPUT LATCHES 3 STATE]
分类和应用: 移位寄存器锁存器输出元件
文件页数/大小: 13 页 / 284 K
品牌: STMICROELECTRONICS [ STMICROELECTRONICS ]
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M54/M74HC595
INPUT AND OUTPUT EQUIVALENT CIRCUIT
TRUTH TABLE
INPUTS
SI
X
X
X
L
H
X
X
X
X: DON’T CARE
SCK
X
X
X
SCLR
X
X
L
H
H
H
RCK
X
X
X
X
X
X
G
H
L
X
X
X
X
X
X
OUTPUT
QA THRU QH OUTPUTS DISABLE
QA THRU QH OUTPUTS ENABLE
SHIFT REGISTER IS CLEARED
FIRST STAGE OF S.R. BECOMES ”L” OTHER STAGES
STORE THE DATA OF PREVIOUS STAGE, RESPECTIVELY
FIRST STAGE OF S.R. BECOMES ”H” OTHER STAGES
STORE THE DATA OF PREVIOUS STAGE, RESPECTIVELY
STATE OF S.R IS NOT CHANGED
S.R. DATA IS STORED INTO STORAGE REGISTER
STORAGE REGISTER STATE IS NOT CHANGED
X
X
X
X
LOGIC DIAGRAM
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