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Descripción |
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74LS28 |
QUAD 2-INPUT NOR BUFFER
SN54, 74LS28 QUAD 2-INPUT NOR BUFFER
QUAD 2-INPUT NOR BUFFER
VCC 14 13 12 11 10 9 8
LOW POWER SCHOTTKY
1
2
3
4
5
6
7 GND
14 1
J SUFFIX CERAMIC CASE 632-08
14 1
N SUFFIX PLASTIC CASE 646-06
14 1
D SUFFIX SOIC CASE 751A-02
ORDERING INFORMATION
SN54LSXXJ SN74LSXXN SN74LSXXD Ceramic Plastic SOIC
GUARANTEED OPERATING RANGES
Symbol VCC TA IOH IOL Supply Voltage Operating Ambient Temperat
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74LS280 |
LOW POWER SCHOTTKY
SN74LS280 9-Bit Odd, Even Parity Generators, Checkers
The SN74LS280 is a Universal 9-Bit Parity Generator , Checker. It features odd , even outputs to facilitate either odd or even parity. By cascading, the word length is easily expanded. The LS280 is designed without the expander input implementation, but the corresponding function is provided by an input at Pin 4 and the absence of any connect
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9-bit Odd/Even Parity Generators/Checkers
Unit: mm
19.20 20.32 Max 14 8 6.30 7.40 Max 1
2.39 Max
1.30
7 7.62
0.51 Min
2.54 Min 5.06 Max
2.54 ± 0.25
0.48 ± 0.10
0.25 0.05 0° 15°
+ 0.10
Hitachi Code JEDEC EIAJ Weight (reference value)
DP-14 Conforms Conforms 0.97 g
Unit: mm
10.06 10.5 Max 14 8 5.5 1 7 *0.22 ± 0.05 0.20 ± 0.04 2.20 Max 7.80 0.30 1.15 0° 8°
+ 0.20
1.42 Max
1.27 *0.42 ± 0.08 0.40 ± 0.06
0.10 ± 0.10
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74LS283 |
4-Bit Binary Adders with Fast Carry
54LS283 DM54LS283 DM74LS283 4-Bit Binary Adders with Fast Carry
June 1989
54LS283 DM54LS283 DM74LS283 4-Bit Binary Adders with Fast Carry
General Description
These full adders perform the addition of two 4-bit binary numbers The sum (R) outputs are provided for each bit and the resultant carry (C4) is obtained from the fourth bit These adders feature full internal look ahead across all four bits
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74LS284 |
4-bit parallel binary multiplier x4
54, 74284
4 位 x4 位 行二 制乘法器(OC, 生高位 ) 要 明: 54, 74284 集 路的 4 位 x4 位 行二 制乘法器,其主要 特性的典 型 如下(具 家有可能不是完全一至): 型 54, 74284 tPLH(A到F) 40ns PD 460mW
器件需 54, 74285 配合使用, 生高位 4 位 。 引出端符 : A0~A3 字 A 入端 B0~B4 字 B 入端 F4~F7 乘 出端 , ST1,, ST2
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