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參數(shù)資料
| 型號(hào)： | PC74HC594P |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 通用總線功能 |
| 英文描述： | 8-bit shift register with output register |
| 中文描述： | HC/UH SERIES, 8-BIT RIGHT SERIAL IN PARALLEL OUT SHIFT REGISTER, TRUE OUTPUT, PDIP16 |
| 文件頁(yè)數(shù)： | 4/10頁(yè) |
| 文件大小： | 71K |
| 代理商： | PC74HC594P |
December 1991
4
Philips Semiconductors
Product specification
8-bit shift register with output register
74HC/HCT594
FUNCTION TABLE
Note
1.
H = HIGH voltage level
L = LOW voltage level
↑
= LOW-to-HIGH transition
NC = no change
X = don’t care.
INPUTS
OUTPUTS
FUNCTION
SH
CP
X
X
X
↑
ST
CP
X
X
↑
X
SH
R
L
X
L
H
ST
R
X
L
H
X
D
S
Q
7
’
L
NC
Q
6
’
Q
n
NC
L
L
NC
X
X
X
H
a LOW level on SH
R
only affects the shift registers.
a LOW level on ST
R
only affects the storage registers.
empty shift register loaded into storage register.
logic HIGH level shifted into shift register stage 0. Contents of all
shift register stages shifted through, e.g. previous state of stage
6 (internal Q
6
’) appears on the serial output (Q
7
’).
contents of shift register stages (internal Q
n
’) are transferred to
the storage register and parallel output stages.
contents of shift register shifted through. Previous contents of
shift register transferred to the storage register and the parallel
output stages.
X
↑
H
H
X
NC
Q
n
’
↑
↑
H
H
X
Q
6
n
Q
n
’
Fig.4 Functional diagram.
handbook, halfpage
MBC320
SHCP
STCP
Q0Q1Q2Q3Q4Q5Q6Q7
SHR
STR
DS
14
10
13
11
12
15
9
1
2
3
4
5
6
7
8-STAGE SHIFT REGISTER
8-BIT STORAGE REGISTER
Q7'
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