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SN74AS181AN датащи(PDF) 1 Page - Texas Instruments

номер детали SN74AS181AN
подробное описание детали  ARITHMETIC LOGIC UNITS/FUNCTION GENERATORS
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производитель  TI [Texas Instruments]
домашняя страница  http://www.ti.com
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SN74AS181AN датащи(HTML) 1 Page - Texas Instruments

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SN54AS181B . . . JT OR JW PACKAGE
SN74AS181A ...N OR NT PACKAGE
(TOP VIEW)
SN54AS181B . . . FK PACKAGE
(TOP VIEW)
1
2
3
4
5
6
7
8
9
10
11
12
24
23
22
21
20
19
18
17
16
15
14
13
B0
A0
S3
S2
S1
S0
Cn
M
F0
F1
F2
GND
VCC
A1
B1
A2
B2
A3
B3
G
Cn + 4
P
A = B
F3
NC – No internal connection
32 1 28 27
12 13
5
6
7
8
9
10
11
25
24
23
22
21
20
19
A2
B2
A3
NC
B3
G
Cn + 4
S2
S1
S0
NC
Cn
M
F0
426
14 15 16 17 18
SN54AS181B, SN74AS181A
ARITHMETIC LOGIC UNITS/FUNCTION GENERATORS
SDAS209B – DECEMBER 1982 – REVISED DECEMBER 1994
Copyright
© 1994, Texas Instruments Incorporated
1
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
Full Look Ahead for High-Speed Operations
on Long Words
Arithmetic Operating Modes:
– Addition
– Subtraction
– Shift Operand A One Position
– Magnitude Comparison
– Twelve Other Arithmetic Operations
Logic Function Modes:
– Exclusive-OR
– Comparator
– AND, NAND, OR, NOR
Package Options Include Plastic
Small-Outline (N) Packages, Ceramic (FK)
Chip Carriers, Standard Plastic (NT) and
Ceramic (JT) 300-mil DIPs, and Ceramic
(JW) 600-mil DIPs
description
The SN54AS181B and SN74AS181A arithmetic
logic units (ALUs) / function generators have a
complexity of 75 equivalent gates on a monolithic
chip. These circuits perform 16 binary arithmetic
operations on two 4-bit words as shown in
Tables 1 and 2. These operations are selected by
the four function-select (S0, S1, S2, and S3) lines
and include addition, subtraction, decrement, and
straight transfer. When performing arithmetic
manipulations, the internal carries are enabled by
applying a low-level voltage to the mode-control
(M) input. A full carry look-ahead scheme is used
to generate fast, simultaneous carry by means of
two cascade (G and P) outputs for the four bits in
the package.
If high speed is not important, a ripple-carry (Cn) input and a ripple-carry (Cn + 4) output are available. The
ripple-carry delay is minimized so that arithmetic manipulations for small word lengths can be performed without
external circuitry.
The SN54AS181B and SN74AS181A accommodate active-high or active-low data if the pin designations are
interpreted as follows:
PIN NUMBER
2
1
23
22
21
20
19
18
9
10
11
13
7
16
15
17
Active-low data (Table 1)
A0
B0
A1
B1
A2
B2
A3
B3
F0
F1
F2
F3
Cn
Cn + 4
P
G
Active-high data (Table 2)
A0
B0
A1
B1
A2
B2
A3
B3
F0
F1
F2
F3
Cn
Cn + 4
X
Y
Subtraction is accomplished by 1’s complement addition where the 1’s complement of the subtrahend is
generated internally. The resultant output is A-B-1, which requires an end-around or forced carry to provide A-B.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.


Аналогичный номер детали - SN74AS181AN

производительномер деталидатащиподробное описание детали
logo
Texas Instruments
SN74AS181AN TI1-SN74AS181AN Datasheet
349Kb / 17P
[Old version datasheet]   ARITHMETIC LOGIC UNITS/FUNCTION GENERATORS
SN74AS181ANT TI-SN74AS181ANT Datasheet
1Mb / 21P
[Old version datasheet]   ARITHMETIC LOGIC UNITS/FUNCTION GENERATORS
SN74AS181ANW TI-SN74AS181ANW Datasheet
1Mb / 21P
[Old version datasheet]   ARITHMETIC LOGIC UNITS/FUNCTION GENERATORS
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Аналогичное описание - SN74AS181AN

производительномер деталидатащиподробное описание детали
logo
Texas Instruments
SN54LS181 TI-SN54LS181 Datasheet
677Kb / 18P
[Old version datasheet]   ARITHMETIC LOGIC UNITS/FUNCTION GENERATORS
SN54LS381A TI-SN54LS381A Datasheet
376Kb / 9P
[Old version datasheet]   ARITHMETIC LOGIC UNITS/FUNCTION GENERATORS
logo
National Semiconductor ...
MM54HC181 NSC-MM54HC181 Datasheet
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   Arithmetic Logic Units/Function Generators
logo
Texas Instruments
SN54LS181 TI1-SN54LS181_15 Datasheet
601Kb / 16P
[Old version datasheet]   ARITHMETIC LOGIC UNITS/FUNCTION GENERATORS
SN54AS181B TI1-SN54AS181B_14 Datasheet
349Kb / 17P
[Old version datasheet]   ARITHMETIC LOGIC UNITS/FUNCTION GENERATORS
SN74AS881A TI-SN74AS881A Datasheet
1Mb / 21P
[Old version datasheet]   ARITHMETIC LOGIC UNITS/FUNCTION GENERATORS
logo
National Semiconductor ...
DM74181N NSC-DM74181N Datasheet
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DM54S181 NSC-DM54S181 Datasheet
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STMicroelectronics
M74HC181 STMICROELECTRONICS-M74HC181 Datasheet
212Kb / 13P
   ARITHMETIC LOGIC UNIT/FUNCTION GENERATOR
logo
Texas Instruments
SN74F382 TI1-SN74F382 Datasheet
146Kb / 8P
[Old version datasheet]   ARITHMETIC LOGIC UNIT/FUNCTION GENERATOR
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