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參數(shù)資料
| 型號： | 74F283 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | 4-bit binary full adder with fast carry(帶快速進位的4位二進制全加器) |
| 中文描述： | 4位二進制全加器快速進行（帶快速進位的4位二進制全加器） |
| 文件頁數(shù)： | 4/10頁 |
| 文件大小： | 114K |
| 代理商： | 74F283 |
Philips Semiconductors
Product specification
74F283
4-bit binary full adder with fast carry
1989 Mar 03
4
Figure A shows how to make a 3-bit adder. Tying the operand inputs
of the fourth adder (A3, B3) Low makes
Σ
3 dependent only on, and
equal to, the carry from the third adder. Using somewhat the same
principle, Figure B shows a way of dividing the 74F283 into a 2-bit
and a 1-bit adder. The third stage adder (A2, B2,
Σ
2) is used as
means of getting a carry (C10) signal into the fourth stage adder (via
A2 and B2) and bringing out the carry from the second stage on
Σ
2.
Note that as long as A2 and B2 are the same, whether High or Low,
they do not influence
Σ
2. 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 C shows a method of implementing a 5-input
encoder where the inputs are equally weighted. The outputs
Σ
0,
Σ
1
and
Σ
2 present a binary number of inputs I0–I4 that are true.
Figure D shows one method of implementing a 5-input majority gate.
When three or more of the inputs I0–I4 are true, the output M4 is
true.
APPLICATIONS
Σ
1
Σ
0
A0 B0 A1 B1 A2 B2 A3 B3
SF00856
Σ
3
Σ
2
C
IN
C
OUT
L
C3
A.
3-bit Adder
Σ
1
Σ
0
A0 B0 A1 B1 A2 B2 A3 B3
Σ
3
Σ
2
C
IN
C
OUT
B.
2-bit and 1-bit Adder
C
IN
C
11
A0 B0 A1 B1
C10
A10 B10
Σ
1
Σ
0
Σ
10
C2
Σ
1
Σ
0
A0 B0 A1 B1 A2 B2 A3 B3
Σ
3
Σ
2
C
IN
C
OUT
C.
5-input Encoder
Σ
1
Σ
0
A0 B0 A1 B1 A2 B2 A3 B3
Σ
3
Σ
2
C
IN
C
OUT
D.
5-input Majority Gate
I0
I1
I2
I3
I4
2
0
2
1
2
2
I0
I1
I2
I3
I4
L
M4
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 74F283_04 | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:4-Bit Binary Full Adder with Fast Carry |
| 74F283PC | 功能描述:邏輯加法器與減法器 4-Bit Bin Full Adder RoHS:否 制造商:Texas Instruments 邏輯系列:LS 封裝 / 箱體:PDIP-16 高電平輸出電流:- 0.4 mA 低電平輸出電流:8 mA 傳播延遲時間:24 ns 工作電源電壓:5 V 最大功率耗散:95 mW 最大工作溫度:+ 70 C 最小工作溫度:0 C 封裝:Tube |
| 74F283SC | 功能描述:邏輯加法器與減法器 4-Bit Bin Full Adder RoHS:否 制造商:Texas Instruments 邏輯系列:LS 封裝 / 箱體:PDIP-16 高電平輸出電流:- 0.4 mA 低電平輸出電流:8 mA 傳播延遲時間:24 ns 工作電源電壓:5 V 最大功率耗散:95 mW 最大工作溫度:+ 70 C 最小工作溫度:0 C 封裝:Tube |
| 74F283SCX | 功能描述:邏輯加法器與減法器 4-Bit Bin Full Adder RoHS:否 制造商:Texas Instruments 邏輯系列:LS 封裝 / 箱體:PDIP-16 高電平輸出電流:- 0.4 mA 低電平輸出電流:8 mA 傳播延遲時間:24 ns 工作電源電壓:5 V 最大功率耗散:95 mW 最大工作溫度:+ 70 C 最小工作溫度:0 C 封裝:Tube |
| 74F283SJ | 功能描述:邏輯加法器與減法器 4-Bit Bin Full Adder RoHS:否 制造商:Texas Instruments 邏輯系列:LS 封裝 / 箱體:PDIP-16 高電平輸出電流:- 0.4 mA 低電平輸出電流:8 mA 傳播延遲時間:24 ns 工作電源電壓:5 V 最大功率耗散:95 mW 最大工作溫度:+ 70 C 最小工作溫度:0 C 封裝:Tube |
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