công cụ tìm kiếm bảng dữ liệu linh kiện điện tử
  Vietnamese  ▼
ALLDATASHEET.VN

X  

74F283 bảng dữ liệu(PDF) 2 Page - Fairchild Semiconductor

tên linh kiện 74F283
Giải thích chi tiết về linh kiện  4-Bit Binary Full Adder with Fast Carry
Download  6 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
nhà sản xuất  FAIRCHILD [Fairchild Semiconductor]
Trang chủ  http://www.fairchildsemi.com
Logo FAIRCHILD - Fairchild Semiconductor

74F283 bảng dữ liệu(HTML) 2 Page - Fairchild Semiconductor

  74F283_04 Datasheet HTML 1Page - Fairchild Semiconductor 74F283_04 Datasheet HTML 2Page - Fairchild Semiconductor 74F283_04 Datasheet HTML 3Page - Fairchild Semiconductor 74F283_04 Datasheet HTML 4Page - Fairchild Semiconductor 74F283_04 Datasheet HTML 5Page - Fairchild Semiconductor 74F283_04 Datasheet HTML 6Page - Fairchild Semiconductor  
Zoom Inzoom in Zoom Outzoom out
 2 / 6 page
background image
www.fairchildsemi.com
2
Functional Description
The 74F283 adds two 4-bit binary words (A plus B) plus the
incoming Carry (C0). The binary sum appears on the Sum
(S0–S3) and outgoing carry (C4) outputs. The binary weight
of the various inputs and outputs is indicated by the sub-
script numbers, representing powers of two.
20 (A0 + B0 + C0) + 2
1 (A
1 + B1)
+ 22 (A
2 + B2) + 2
3 (A
3 + B3)
= S
0 + 2S1 + 4S2 + 8S3 + 16C4
Where (
+) = plus
Interchanging inputs of equal weight does not affect the
operation. Thus C0, A0, B0 can be arbitrarily assigned to
pins 5, 6 and 7 for DIPS, and 7, 8 and 9 for chip carrier
packages. Due to the symmetry of the binary add function,
the 74F283 can be used either with all inputs and outputs
active HIGH (positive logic) or with all inputs and outputs
active LOW (negative logic). See Figure 1. Note that if C0 is
not used it must be tied LOW for active HIGH logic or tied
HIGH for active LOW logic.
Due to pin limitations, the intermediate carries of the
74F283 are not brought out for use as inputs or outputs.
However, other means can be used to effectively insert a
carry into, or bring a carry out from, an intermediate stage.
Figure 2 shows how to make a 3-bit adder. Tying the oper-
and inputs of the fourth adder (A3, B3) LOW makes S3
dependent only on, and equal to, the carry from the third
adder. Using somewhat the same principle, Figure 3 shows
a way of dividing the 74F283 into a 2-bit and a 1-bit adder.
The third stage adder (A2, B2, S2) is used merely as a
means of getting a carry (C10) signal into the fourth stage
(via A2 and B2) and bringing out the carry from the second
stage on S2. Note that as long as A2 and B2 are the same,
whether HIGH or LOW, they do not influence S2. Similarly,
when A2 and B2 are the same the carry into the third stage
does not influence the carry out of the third stage. Figure 4
shows a method of implementing a 5-input encoder, where
the inputs are equally weighted. The outputs S0, S1 and S2
present a binary number equal to the number of inputs I1
I5 that are true. Figure 5 shows one method of implement-
ing a 5-input majority gate. When three or more of the
inputs I1–I5 are true, the output M5 is true.
Active HIGH: 0
+ 10 + 9 = 3 + 16
Active LOW: 1
+ 5 + 6 = 12 + 0
FIGURE 1. Active HIGH versus Active LOW Interpretation
FIGURE 2. 3-Bit Adder
FIGURE 3. 2-Bit and 1-Bit Adders
FIGURE 4. 5-Input Encoder
FIGURE 5. 5-Input Majority Gate
C0
A0
A1
A2
A3
B0
B1
B2
B3
S0
S1
S2
S3
C4
Logic Levels
L
L
H
L
H
H
L
L
H
H
H
L
L
H
Active HIGH
00
101
100
111
001
Active LOW
1
1
010
011
000
110


Số phần tương tự - 74F283_04

nhà sản xuấttên linh kiệnbảng dữ liệuGiải thích chi tiết về linh kiện
logo
National Semiconductor ...
74F283PC NSC-74F283PC Datasheet
184Kb / 10P
   4-Bit Binary Full Adder with Fast Carry
logo
Fairchild Semiconductor
74F283PC FAIRCHILD-74F283PC Datasheet
66Kb / 6P
   4-Bit Binary Full Adder with Fast Carry
logo
National Semiconductor ...
74F283SC NSC-74F283SC Datasheet
184Kb / 10P
   4-Bit Binary Full Adder with Fast Carry
logo
Fairchild Semiconductor
74F283SC FAIRCHILD-74F283SC Datasheet
66Kb / 6P
   4-Bit Binary Full Adder with Fast Carry
logo
National Semiconductor ...
74F283SJ NSC-74F283SJ Datasheet
184Kb / 10P
   4-Bit Binary Full Adder with Fast Carry
More results

Mô tả tương tự - 74F283_04

nhà sản xuấttên linh kiệnbảng dữ liệuGiải thích chi tiết về linh kiện
logo
Hitachi Semiconductor
HD74AC283 HITACHI-HD74AC283 Datasheet
63Kb / 12P
   4-bit Binary Full Adder with Fast Carry
logo
National Semiconductor ...
54F283DM NSC-54F283DM Datasheet
184Kb / 10P
   4-Bit Binary Full Adder with Fast Carry
logo
NXP Semiconductors
74HC283N PHILIPS-74HC283N Datasheet
111Kb / 20P
   4-bit binary full adder with fast carry
Rev. 03-11 November 2004
logo
Renesas Technology Corp
HD74HC83 RENESAS-HD74HC83 Datasheet
102Kb / 7P
   4-bit Binary Full Adder (with Fast Carry)
logo
Motorola, Inc
SN54LS283 MOTOROLA-SN54LS283 Datasheet
97Kb / 4P
   4-BIT BINARY FULL ADDER WITH FAST CARRY
SN54LS83A MOTOROLA-SN54LS83A Datasheet
94Kb / 3P
   4-BIT BINARY FULL ADDER WITH FAST CARRY
logo
NXP Semiconductors
74HC283 PHILIPS-74HC283 Datasheet
61Kb / 8P
   4-bit binary full adder with fast carry
December 1990
logo
Intersil Corporation
CD54AC283 INTERSIL-CD54AC283 Datasheet
9Kb / 1P
   4-Bit Binary Full Adder with Fast Carry
June 1997
logo
Fairchild Semiconductor
74F283 FAIRCHILD-74F283 Datasheet
66Kb / 6P
   4-Bit Binary Full Adder with Fast Carry
logo
Renesas Technology Corp
HD74AC283 RENESAS-HD74AC283 Datasheet
233Kb / 10P
   4-bit Binary Full Adder with Fast Carry
More results


Html Pages

1 2 3 4 5 6


bảng dữ liệu tải về

Go To PDF Page


Link URL




Chính sách bảo mật
ALLDATASHEET.VN
Cho đến nay ALLDATASHEET có giúp ích cho doanh nghiệp của bạn hay không?  [ DONATE ] 

Alldatasheet là   |   Quảng cáo   |   Liên lạc với chúng tôi   |   Chính sách bảo mật   |   Trao đổi link   |   Tìm kiếm theo nhà sản xuất
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com