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| 型號(hào)： | SNJ54AS194FK |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 計(jì)數(shù)移位寄存器 |
| 英文描述： | AS SERIES, 4-BIT BIDIRECTIONAL PARALLEL IN PARALLEL OUT SHIFT REGISTER, TRUE OUTPUT, CQCC20 |
| 封裝： | CERAMIC, LCC-20 |
| 文件頁(yè)數(shù)： | 11/18頁(yè) |
| 文件大?。?/td> | 662K |
| 代理商： | SNJ54AS194FK |
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SN54AS194, SN74AS194
4BIT BIDIRECTIONAL UNIVERSAL SHIFT REGISTERS
SDAS212A DECEMBER 1983 REVISED DECEMBER 1994
2
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
POST OFFICE BOX 1443
HOUSTON, TEXAS 772511443
FUNCTION TABLE
INPUTS
OUTPUTS
CLR
MODE
CLK
SERIAL
PARALLEL
QA
QB
QC
QD
CLR
S1
S0
CLK
LEFT
RIGHT
A
B
C
D
QA
QB
QC
QD
L
X
L
H
X
XL
X
XX
X
QA0
QB0
QC0
QD0
H
↑
X
Xa
bc
d
a
bc
d
H
L
H
↑
X
HX
XX
X
H
QAn
QBn
QCn
H
L
H
↑
X
LX
XX
X
L
QAn
QBn
QCn
H
L
↑
H
XX
X
QBn
QCn
QDn
H
L
↑
L
XX
X
QBn
QCn
QDn
L
H
L
X
QA0
QB0
QC0
QD0
H = high level (steady state); L = low level (steady state); X = irrelevant (any input, including transitions);
↑ = transition from
low to high level; a, b, c, d = the level of steady-state input at inputs A, B, C, or D, respectively; QA0, QB0, QC0, QD0 = the
level of QA, QB, QC, or QD, respectively, before the indicated steady-state input conditions were established; QAn, QBn, QCn,
QDn = the level of QA, QB, QC, respectively, before the most recent ↑ transition of the clock.
logic symbol
SRG4
3, 4D
4
B
3, 4D
5
C
3, 4D
6
D
2, 4D
7
SL SER
1, 4D
2
SR SER
3, 4D
3
A
R
1
11
CLK
C4
M
0
3
14
13
15
1
10
S1
0
9
S0
1
/2
12
CLR
QA
QB
QC
QD
This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12.
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